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  • How to unsquash and mount arch linux live CD

    - by steffen
    I am following this manual to install Arch Linux from within another Linux distro with the help of an Arch Linux live CD. Here is what I did: sudo mount -o loop Downloads/archlinux-2012.11.01-dual.iso arch_iso/ unsquashfs -d squashfs-root/ arch_iso/arch/x86_64/root-image.fs.sfs This results in a directory squashfs-root/ containing one file: root-image.fs I assume that this is not what I want. I want to see something that looks like a Linux root folder. If I follow these steps: "mount the file system" with mount -B /squashfs-root ${livecd_arch} and mount -t proc /proc ${livecd_arch}/proc, I get error messages like: mount: mount point /home/me/arch_root//proc does not exist What am I missing? Thanks!

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  • Linux not buffering block I/O when the device is not "in use" (i.e. mounted)

    - by Radek Hladík
    I am installing new server and I've found an interesting issue. The server is running Fedora 19 (3.11.7-200.fc19.x86_64 kernel) and is supposed to host a few KVM/Qemu virtual servers (mail server, file server, etc..). The HW is Intel(R) Xeon(R) CPU 5160 @ 3.00GHz with 16GB RAM. One of the most important features will be Samba server and we have decided to make it as virtual machine with almost direct access to the disks. So the real HDD is cached on SSD (via bcache) then raided with md and the final device is exported into the virtual machine via virtio. The virtual machine is again Fedora 19 with the same kernel. One important topic to find out is whether the virtualization layer will not introduce high overload into disk I/Os. So far I've been able to get up to 180MB/s in VM and up to 220MB/s on real HW (on the SSD disk). I am still not sure why the overhead is so big but it is more than the network can handle so I do not care so much. The interesting thing is that I've found that the disk reads are not buffered in the VM unless I create and mount FS on the disk or I use the disks somehow. Simply put: Lets do dd to read disk for the first time (the /dev/vdd is an old Raptor disk 70MB/s is its real speed): [root@localhost ~]# dd if=/dev/vdd of=/dev/null bs=256k count=10000 ; cat /proc/meminfo | grep Buffers 2621440000 bytes (2.6 GB) copied, 36.8038 s, 71.2 MB/s Buffers: 14444 kB Rereading the data shows that they are cached somewhere but not in buffers of the VM. Also the speed increased to "only" 500MB/s. The VM has 4GB of RAM (more that the test file) [root@localhost ~]# dd if=/dev/vdd of=/dev/null bs=256k count=10000 ; cat /proc/meminfo | grep Buffers 2621440000 bytes (2.6 GB) copied, 5.16016 s, 508 MB/s Buffers: 14444 kB [root@localhost ~]# dd if=/dev/vdd of=/dev/null bs=256k count=10000 ; cat /proc/meminfo | grep Buffers 2621440000 bytes (2.6 GB) copied, 5.05727 s, 518 MB/s Buffers: 14444 kB Now lets mount the FS on /dev/vdd and try the dd again: [root@localhost ~]# mount /dev/vdd /mnt/tmp [root@localhost ~]# dd if=/dev/vdd of=/dev/null bs=256k count=10000 ; cat /proc/meminfo | grep Buffers 2621440000 bytes (2.6 GB) copied, 4.68578 s, 559 MB/s Buffers: 2574592 kB [root@localhost ~]# dd if=/dev/vdd of=/dev/null bs=256k count=10000 ; cat /proc/meminfo | grep Buffers 2621440000 bytes (2.6 GB) copied, 1.50504 s, 1.7 GB/s Buffers: 2574592 kB While the first read was the same, all 2.6GB got buffered and the next read was at 1.7GB/s. And when I unmount the device: [root@localhost ~]# umount /mnt/tmp [root@localhost ~]# cat /proc/meminfo | grep Buffers Buffers: 14452 kB [root@localhost ~]# dd if=/dev/vdd of=/dev/null bs=256k count=10000 ; cat /proc/meminfo | grep Buffers 2621440000 bytes (2.6 GB) copied, 5.10499 s, 514 MB/s Buffers: 14468 kB The bcache was disabled while testing and the results are same on faster (newer) HDDs and on SSD (except for the initial read speed of course). To sum it up. When I read from the device via dd first time, it gets read from the disk. Next time I reread it gets cached in the host but not in the guest (thats actually the same issue, more on that later). When I mount the filesystem but try to read the device directly it gets cached in VM (via buffers). As soon as I stop "using" it, buffers are discarded and the device is not cached anymore in the VM. When I looked into buffers value on the host I realized that the situation is the same. The block I/O gets buffered only when the disk is in use, in this case it means "exported to a VM". On host, after all the measurement done: 3165552 buffers On the host, after the VM shutdown: 119176 buffers I know it is not important as the disks will be mounted all the time but I am curious and I would like to know why it is working like this.

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  • centos dedicated Server unresponsive for the first time

    - by Ambrose Bwangatto
    server was unresponsive for an hour so i rebooted it and checked /var/log/messages and found this. can anybody point out whats wrong ? Sep 28 07:39:35 www kernel: INFO: task mysqld:22749 blocked for more than 120 seconds. Sep 28 07:39:35 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:39:35 www kernel: mysqld D ffff810001015120 0 22749 3266 22792 22659 (NOTLB) Sep 28 07:39:35 www kernel: ffff810139d21e58 0000000000000086 ffff810036217000 ffffffff8000f758 Sep 28 07:39:35 www kernel: ffff81020dfd1408 0000000000000007 ffff8101cfbaf7e0 ffff81020fca5080 Sep 28 07:39:35 www kernel: 00017a451524782a 00000000000043b2 ffff8101cfbaf9c8 0000000280009a22 Sep 28 07:39:35 www kernel: Call Trace: Sep 28 07:39:35 www kernel: [<ffffffff8000f758>] generic_permission+0x52/0xca Sep 28 07:39:35 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:39:35 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:39:35 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:39:35 www kernel: [<ffffffff8003c618>] do_unlinkat+0x66/0x141 Sep 28 07:39:35 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:39:57 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:39:58 www kernel: Sep 28 07:39:59 www kernel: INFO: task httpd:22679 blocked for more than 120 seconds. Sep 28 07:40:04 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:40:08 www kernel: httpd D ffff81000100caa0 0 22679 22413 22680 22678 (NOTLB) Sep 28 07:40:51 www kernel: ffff81018b0dbc78 0000000000000086 ffff81018b0dbc88 0000004480063002 Sep 28 07:41:52 www kernel: ffff81000001cc00 0000000000000007 ffff81013ac5e860 ffff81020fc96100 Sep 28 07:43:10 www kernel: 00017a44de6376c8 000000000000a89f ffff81013ac5ea48 000000010001cc00 Sep 28 07:43:38 www kernel: Call Trace: Sep 28 07:44:06 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:44:09 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:44:10 www kernel: [<ffffffff8000d0b2>] do_lookup+0x90/0x1e6 Sep 28 07:44:13 www kernel: [<ffffffff8000a2e9>] __link_path_walk+0xa3a/0xfd1 Sep 28 07:44:16 www kernel: [<ffffffff8000eb8e>] link_path_walk+0x45/0xb8 Sep 28 07:44:16 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:44:29 www kernel: [<ffffffff800129ad>] getname+0x15b/0x1c2 Sep 28 07:44:38 www kernel: [<ffffffff80023b60>] __user_walk_fd+0x37/0x4c Sep 28 07:44:42 www kernel: [<ffffffff80028ada>] vfs_stat_fd+0x1b/0x4a Sep 28 07:44:43 www kernel: [<ffffffff8003c69a>] do_unlinkat+0xe8/0x141 Sep 28 07:45:02 www kernel: [<ffffffff80023890>] sys_newstat+0x19/0x31 Sep 28 07:46:18 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:46:43 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:46:55 www kernel: Sep 28 07:46:58 www kernel: INFO: task php:28906 blocked for more than 120 seconds. Sep 28 07:46:59 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:47:00 www kernel: php D ffff810165127000 0 28906 28905 (NOTLB) Sep 28 07:47:37 www kernel: ffff810078431e58 0000000000000082 ffff810165127000 ffffffff8000f758 Sep 28 07:48:29 www kernel: ffff81020dfd1408 0000000000000007 ffff8101247b9860 ffff810207d0e100 Sep 28 07:48:36 www kernel: 00017a4218932fae 0000000000377111 ffff8101247b9a48 0000000280009a22 Sep 28 07:48:37 www kernel: Call Trace: Sep 28 07:48:37 www kernel: [<ffffffff8000f758>] generic_permission+0x52/0xca Sep 28 07:48:37 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:48:37 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:48:41 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:48:41 www kernel: [<ffffffff8003c618>] do_unlinkat+0x66/0x141 Sep 28 07:48:42 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:48:42 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:48:42 www kernel: Sep 28 07:48:43 www kernel: INFO: task php:29032 blocked for more than 120 seconds. Sep 28 07:48:45 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:48:46 www kernel: php D 0000000000000004 0 29032 1 29050 29024 (NOTLB) Sep 28 07:48:46 www kernel: ffff81006b465dc8 0000000000000086 ffff81020dfd1408 ffffffff80009a22 Sep 28 07:48:46 www kernel: 0000000000000000 0000000000000007 ffff81002946e860 ffff81003c943100 Sep 28 07:48:46 www kernel: 00017a4211450766 000000000024be3d ffff81002946ea48 000000020e42b300 Sep 28 07:48:52 www kernel: Call Trace: Sep 28 07:48:54 www kernel: [<ffffffff80009a22>] __link_path_walk+0x173/0xfd1 Sep 28 07:48:54 www kernel: [<ffffffff8002cc58>] mntput_no_expire+0x19/0x89 Sep 28 07:48:55 www kernel: [<ffffffff8000ebf5>] link_path_walk+0xac/0xb8 Sep 28 07:48:55 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:48:55 www kernel: [<ffffffff80023974>] __path_lookup_intent_open+0x56/0x97 Sep 28 07:48:55 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:48:55 www kernel: [<ffffffff8001b260>] open_namei+0xea/0x718 Sep 28 07:48:59 www kernel: [<ffffffff80067235>] do_page_fault+0x4cc/0x842 Sep 28 07:49:01 www kernel: [<ffffffff80027726>] do_filp_open+0x1c/0x38 Sep 28 07:49:01 www kernel: [<ffffffff8001a09c>] do_sys_open+0x44/0xbe Sep 28 07:49:02 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:49:03 www kernel: Sep 28 07:49:07 www kernel: INFO: task mysqld:22749 blocked for more than 120 seconds. Sep 28 07:49:09 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:49:09 www kernel: mysqld D ffff810001015120 0 22749 3266 22792 22659 (NOTLB) Sep 28 07:49:14 www kernel: ffff810139d21e58 0000000000000086 ffff810036217000 ffffffff8000f758 Sep 28 07:49:14 www kernel: ffff81020dfd1408 0000000000000007 ffff8101cfbaf7e0 ffff81020fca5080 Sep 28 07:49:15 www kernel: 00017a451524782a 00000000000043b2 ffff8101cfbaf9c8 0000000280009a22 Sep 28 07:49:15 www kernel: Call Trace: Sep 28 07:49:22 www kernel: [<ffffffff8000f758>] generic_permission+0x52/0xca Sep 28 07:49:23 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:49:23 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:49:23 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:49:23 www kernel: [<ffffffff8003c618>] do_unlinkat+0x66/0x141 Sep 28 07:49:23 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:49:23 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:49:23 www kernel: Sep 28 07:49:23 www kernel: INFO: task php:29024 blocked for more than 120 seconds. Sep 28 07:49:23 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:49:24 www kernel: php D ffff8101920a0000 0 29024 1 29032 29001 (NOTLB) Sep 28 07:49:26 www kernel: ffff8101cca8fe58 0000000000000086 ffff8101920a0000 ffffffff8000f758 Sep 28 07:49:26 www kernel: ffff81020dfd1408 0000000000000007 ffff81000b64b040 ffff8101e05337e0 Sep 28 07:49:26 www kernel: 00017a552aef9f35 0000000000009513 ffff81000b64b228 0000000180009a22 Sep 28 07:49:27 www kernel: Call Trace: Sep 28 07:49:27 www kernel: [<ffffffff8000f758>] generic_permission+0x52/0xca Sep 28 07:49:27 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:49:27 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:49:27 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:49:27 www kernel: [<ffffffff8003c618>] do_unlinkat+0x66/0x141 Sep 28 07:49:27 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:49:27 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:49:27 www kernel: Sep 28 07:49:27 www kernel: INFO: task php:29050 blocked for more than 120 seconds. Sep 28 07:49:28 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:49:28 www kernel: php D ffff810201d95000 0 29050 1 29032 (NOTLB) Sep 28 07:49:28 www kernel: ffff810051e45e58 0000000000000086 ffff810201d95000 ffffffff8000f758 Sep 28 07:49:28 www kernel: ffff81020dfd1408 0000000000000007 ffff81001c23f080 ffff81020f5e2080 Sep 28 07:49:29 www kernel: 00017a5d0bc2aa75 0000000000d0ecfe ffff81001c23f268 0000000280009a22 Sep 28 07:49:29 www kernel: Call Trace: Sep 28 07:49:29 www kernel: [<ffffffff8000f758>] generic_permission+0x52/0xca Sep 28 07:49:29 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:49:29 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:49:34 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:49:35 www kernel: [<ffffffff8003c618>] do_unlinkat+0x66/0x141 Sep 28 07:49:37 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:49:37 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:49:37 www kernel: Sep 28 07:49:37 www kernel: INFO: task php:29064 blocked for more than 120 seconds. Sep 28 07:49:37 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:49:37 www kernel: php D ffff81009c231000 0 29064 29057 (NOTLB) Sep 28 07:49:38 www kernel: ffff8100a5dc7e58 0000000000000086 ffff81009c231000 ffffffff8000f758 Sep 28 07:49:38 www kernel: ffff81020dfd1408 0000000000000007 ffff81000a850820 ffff8102038037a0 Sep 28 07:49:38 www kernel: 00017a5bb5c6846e 000000000000861a ffff81000a850a08 0000000080009a22 Sep 28 07:49:38 www kernel: Call Trace: Sep 28 07:49:38 www kernel: [<ffffffff8000f758>] generic_permission+0x52/0xca Sep 28 07:49:38 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:49:38 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:49:38 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:49:38 www kernel: [<ffffffff8003c618>] do_unlinkat+0x66/0x141 Sep 28 07:49:38 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:49:40 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:49:42 www kernel: Sep 28 07:49:42 www kernel: INFO: task mysqld:24612 blocked for more than 120 seconds. Sep 28 07:49:43 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:49:46 www kernel: mysqld D ffff81020dfd14c0 0 24612 3266 19643 3599 (NOTLB) Sep 28 07:49:46 www kernel: ffff81019e517c78 0000000000000086 ffff81019e517c88 ffffffff80063002 Sep 28 07:49:47 www kernel: ffff810201966558 0000000000000009 ffff81015fa560c0 ffff8101c263b860 Sep 28 07:49:51 www kernel: 00017a9d113e27fe 0000000000008d5a ffff81015fa562a8 000000018006ec9f Sep 28 07:49:52 www kernel: Call Trace: Sep 28 07:49:52 www kernel: [<ffffffff80063002>] thread_return+0x62/0xfe Sep 28 07:49:52 www kernel: [<ffffffff8005a46a>] getnstimeofday+0x10/0x29 Sep 28 07:49:53 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:49:54 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:49:54 www kernel: [<ffffffff8000d0b2>] do_lookup+0x90/0x1e6 Sep 28 07:49:56 www kernel: [<ffffffff8000a2e9>] __link_path_walk+0xa3a/0xfd1 Sep 28 07:50:00 www kernel: [<ffffffff8000eb8e>] link_path_walk+0x45/0xb8 Sep 28 07:50:03 www kernel: [<ffffffff8000cea2>] do_path_lookup+0x294/0x310 Sep 28 07:50:04 www kernel: [<ffffffff800129ad>] getname+0x15b/0x1c2 Sep 28 07:50:06 www kernel: [<ffffffff80023b60>] __user_walk_fd+0x37/0x4c Sep 28 07:50:06 www kernel: [<ffffffff8003f013>] vfs_lstat_fd+0x18/0x47 Sep 28 07:50:08 www kernel: [<ffffffff8002ad91>] sys_newlstat+0x19/0x31 Sep 28 07:50:10 www kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0 Sep 28 07:50:15 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:50:19 www kernel: Sep 28 07:50:19 www kernel: INFO: task php:29178 blocked for more than 120 seconds. Sep 28 07:50:23 www kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 28 07:50:23 www kernel: php D 0000000000000003 0 29178 29123 (NOTLB) Sep 28 07:50:23 www kernel: ffff81004a95bdc8 0000000000000086 ffff81020dfd1408 ffffffff80009a22 Sep 28 07:50:24 www kernel: ffffffff800a2fd0 0000000000000007 ffff8101937a4040 ffff81010bde27a0 Sep 28 07:50:26 www kernel: 00017aa3a1d89c9b 000000000000d66e ffff8101937a4228 000000020e42b300 Sep 28 07:50:26 www kernel: Call Trace: Sep 28 07:50:26 www kernel: [<ffffffff80009a22>] __link_path_walk+0x173/0xfd1 Sep 28 07:50:27 www kernel: [<ffffffff800a2fd0>] wake_bit_function+0x0/0x23 Sep 28 07:50:27 www kernel: [<ffffffff8002cc58>] mntput_no_expire+0x19/0x89 Sep 28 07:50:27 www kernel: [<ffffffff8000ebf5>] link_path_walk+0xac/0xb8 Sep 28 07:50:28 www kernel: [<ffffffff80063c63>] __mutex_lock_slowpath+0x60/0x9b Sep 28 07:50:32 www kernel: [<ffffffff80023974>] __path_lookup_intent_open+0x56/0x97 Sep 28 07:50:32 www kernel: [<ffffffff80063cad>] .text.lock.mutex+0xf/0x14 Sep 28 07:50:34 www kernel: [<ffffffff8001b260>] open_namei+0xea/0x718 Sep 28 07:50:34 www kernel: [<ffffffff80067235>] do_page_fault+0x4cc/0x842 Sep 28 07:50:35 www kernel: [<ffffffff80027726>] do_filp_open+0x1c/0x38 Sep 28 07:50:35 www kernel: [<ffffffff8001a09c>] do_sys_open+0x44/0xbe Sep 28 07:50:35 www kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0 Sep 28 07:50:35 www kernel: Sep 28 07:56:41 www kernel: proftpd invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Sep 28 07:56:41 www kernel: Sep 28 07:56:41 www kernel: Call Trace: Sep 28 07:56:41 www kernel: [<ffffffff800c9f35>] out_of_memory+0x8e/0x2f3 Sep 28 07:56:41 www kernel: [<ffffffff800a2fa2>] autoremove_wake_function+0x0/0x2e Sep 28 07:56:41 www kernel: [<ffffffff8000f67d>] __alloc_pages+0x27f/0x308 Sep 28 07:56:41 www kernel: [<ffffffff80013047>] __do_page_cache_readahead+0x96/0x17b Sep 28 07:56:41 www kernel: [<ffffffff80013984>] filemap_nopage+0x14c/0x360 Sep 28 07:56:41 www kernel: [<ffffffff80008972>] __handle_mm_fault+0x1fd/0x103b Sep 28 07:56:41 www kernel: [<ffffffff800a4fe1>] ktime_get_ts+0x1a/0x4e Sep 28 07:56:41 www kernel: [<ffffffff80067202>] do_page_fault+0x499/0x842 Sep 28 07:56:41 www kernel: [<ffffffff8003ad91>] hrtimer_try_to_cancel+0x4a/0x53 Sep 28 07:58:10 www kernel: [<ffffffff80033541>] do_setitimer+0xd0/0x689 Sep 28 08:26:22 www syslogd 1.4.1: restart. Sep 28 08:26:22 www kernel: klogd 1.4.1, log source = /proc/kmsg started. Sep 28 08:26:22 www kernel: Linux version 2.6.18-274.17.1.el5 ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-51)) #1 SMP Tue Jan 10 17:25:58 EST 2012 Sep 28 08:26:22 www kernel: Command line: ro root=LABEL=/

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  • chown: changing ownership of `.': Invalid argument

    - by Pierre
    I'm trying to install some new files on our new server while our sysadmin is in holidays: Here is my df # df -h Filesystem Size Used Avail Use% Mounted on /dev/sdb3 273G 11G 248G 5% / tmpfs 48G 260K 48G 1% /dev/shm /dev/sdb1 485M 187M 273M 41% /boot xxx.xx.xxx.xxx:/commun 63T 2.2T 61T 4% /commun as root , I can create a new directory and run chown under /home/lindenb # cd /home/lindenb/ # mkdir X # chown lindenb X but I cannot run the same command under /commun # cd /commun/data/users/lindenb/ # mkdir X # chown lindenb X chown: changing ownership of `X': Invalid argument why ? how can I fix this ? updated: mount: /dev/sdb3 on / type ext4 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) /dev/sdb1 on /boot type ext4 (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) xxx.xx.xxx.xxx:/commun on /commun type nfs (rw,noatime,noac,hard,intr,vers=4,addr=xxx.xx.xxx.xxx,clientaddr=xxx.xx.xxx.xxx) version: $ cat /etc/redhat-release CentOS release 6.3 (Final)

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  • overriding new ubuntu installation

    - by tkoomzaaskz
    I've got a ubuntu 11.10 which has lost its support in May 2013, now I'd like to reintall up to the most up-to-date LTS, which is 12.04. My question is regarding my current partitions and doing backups. Is there a safe way to backup my data on some local partitions instead of copying files into DVDs/external drives (this is very uncormortable in my situation). Following are system commands shoing my disk: $ lsblk NAME MAJ:MIN RM SIZE RO MOUNTPOINT sda 8:0 0 232,9G 0 +-sda1 8:1 0 48,8G 0 +-sda2 8:2 0 63G 0 +-sda3 8:3 0 1K 0 +-sda4 8:4 0 53,7G 0 / +-sda5 8:5 0 18,6G 0 +-sda6 8:6 0 25,5G 0 +-sda7 8:7 0 23,3G 0 [SWAP] sr0 11:0 1 1024M 0 and $ sudo fdisk -l [sudo] password for xyz: Disk /dev/sda: 250.1 GB, 250059350016 bytes glowic: 255, sektorów/sciezke: 63, cylindrów: 30401, w sumie sektorów: 488397168 Jednostka = sektorów, czyli 1 * 512 = 512 bajtów Rozmiar sektora (logiczny/fizyczny) w bajtach: 512 / 512 Rozmiar we/wy (minimalny/optymalny) w bajtach: 512 / 512 Identyfikator dysku: 0xc3ffc3ff Device Boot Beginning End Blocks ID System /dev/sda1 * 2048 102402047 51200000 7 HPFS/NTFS/exFAT /dev/sda2 215044096 347080703 66018304 7 HPFS/NTFS/exFAT /dev/sda3 347082750 488392064 70654657+ 5 Extended /dev/sda4 102402048 215042047 56320000 83 Linux /dev/sda5 395905923 434975939 19535008+ 83 Linux /dev/sda6 434976003 488392064 26708031 83 Linux /dev/sda7 347082752 395905023 24411136 82 Linux swap / Solaris In the beginning I had Windows Vista pre-installed with the machine when it was bought (damn!) and I installed linux (the one I have now). The windows-program in master boot record has been overriden by grub and now I can boot with both Windows and Linux. This is list of mounted devices: $ mount /dev/sda4 on / type ext4 (rw,errors=remount-ro,commit=0) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) fusectl on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/tomasz/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=tomasz) It's strange (I don't remember such thing) that my current linux uses only one partition (/dev/sda4). But, anyway, it seems like that. My final question is: am I able to use one of the existing linux partitions for a backup and install ubuntu 12.04 without removing neither windows nor ubuntu 11.04? I mean - will grub automatically accept both old windows vista and 2 linuxes (old 11.10 and "new" 12.04)? Is there any hidden operation done while installation that could harm my custom-backup-partition while installing? my fstab file: proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda4 during installation UUID=d44e89f5-9da2-48eb-83b3-887652ec95d2 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda7 during installation UUID=bbe50535-ba57-434a-9272-211d859f0e00 none swap sw 0 0 sda5 and sda6 are trash partitions created during unsuccessful linux installation (this was linux installation before my current installation), I didn't delete these partitions, but I have access to them (and I can use them as backup partitions). edit: second question is: why does lsblk show /dev/sda having 232,9G while fdisk shows that it has 250.1GB? Where does the difference come from?

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  • Linux commands shows different results

    - by ClydeFrog
    I'm really having a hard time to process these results on my Ubuntu server. I have a major problem with my JBoss server where I get FileNotFoundExceptions along with "No space left on device" errors. And I thought "maybe I'm out of disk space", and used df command to figure out how much I have left: root@ubuntu1:/# df -h Filsystem Storlek Anvnt Tillg Anv% Monterat på /dev/mapper/ubuntu1-root 36G 13G 21G 38% / none 2,0G 192K 2,0G 1% /dev none 2,0G 0 2,0G 0% /dev/shm none 2,0G 64K 2,0G 1% /var/run none 2,0G 0 2,0G 0% /var/lock /dev/sda1 228M 23M 193M 11% /boot /dev/mapper/vgdata-lvdata 79G 9,2G 66G 13% /data And as you can see, I have plenty of space left. And I also checked if I'm out of i-nodes: root@ubuntu1:/# df -i Filsystem Inoder IAnv IFria IAnv% Monterat på /dev/mapper/ubuntu1-root 2346512 61992 2284520 3% / none 505380 773 504607 1% /dev none 507383 1 507382 1% /dev/shm none 507383 30 507353 1% /var/run none 507383 2 507381 1% /var/lock /dev/sda1 124496 230 124266 1% /boot /dev/mapper/vgdata-lvdata 10486784 233945 10252839 3% /data But then i used du: root@ubuntu1:/# du -s -h /* 7,5M /bin 23M /boot 19G /data 192K /dev 11G /eniro 5,3M /etc 112K /home 0 /initrd.img 183M /lib 0 /lib64 16K /lost+found 12K /media 4,0K /mnt 4,0K /opt du: kan inte komma åt "/proc/20452/task/20452/fd/3": Filen eller katalogen finns inte du: kan inte komma åt "/proc/20452/task/20452/fdinfo/3": Filen eller katalogen finns inte du: kan inte komma åt "/proc/20452/fd/3": Filen eller katalogen finns inte du: kan inte komma åt "/proc/20452/fdinfo/3": Filen eller katalogen finns inte 0 /proc 18M /root 8,2M /sbin 4,0K /selinux 8,0K /srv 0 /sys 40K /tmp 691M /usr 1,2G /var 0 /vmlinuz Notice that /data and /eniro are 30G combined! How is it possible? Do I have a memory leak somewhere? Or is it something else? ----- EDIT 1 ----- Ok, I figured out that /data has its own mount so it's not possible to combine /data and /eniro because they aren't on the same mount. But how come it says 9,2G on the first command when it says 19G on the third on directory /data?

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  • Apache Probes -- what are they after?

    - by Chris_K
    The past few weeks I've been seeing more and more of these probes each day. I'd like to figure out what vulnerability they're looking for but haven't been able to turn anything up with a web search. Here's a sample of what I get in my morning Logwatch emails: A total of XX possible successful probes were detected (the following URLs contain strings that match one or more of a listing of strings that indicate a possible exploit): /MyBlog/?option=com_myblog&Itemid=12&task=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP Response 200 /index2.php?option=com_myblog&item=12&task=../../../../../../../../../../../../../../../../proc/self/environ%00 HTTP Response 200 /?option=com_myblog&Itemid=12&task=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP Response 301 /index2.php?option=com_myblog&item=12&task=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP Response 200 //index2.php?option=com_myblog&Itemid=1&task=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP Response 200 This is coming from a current CentOS 5.4 / Apache 2 box with all updates. I've manually tried entering a few in to see what they get, but those all appear to just return the site's home page. This server is just hosting a few Joomla! sites... but this doesn't seem to be targeting Joomla (as far as I can tell). Anyone know what they're probing for? I just want to make sure whatever it is I've got it covered (or not installed). The escalation of these entries has me a bit concerned.

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  • Creating own Amazon Machine Image - Kernel panic

    - by amra
    I have created own AMI and registered it on Amazon EC2. But while AMI startup I receive following error: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1) The image is running locally without any problems. fstab contains: proc /proc proc defaults 0 0 /dev/sda1 / ext3 relatime,errors=remount-ro 0 1 thx for help

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  • disk space keeps filling up on EC2 instance with no apperent files/directories

    - by sasher
    How come os shows 6.5G used but I see only 3.6G in files/directories? Running as root on an Amazon Linux AMI (seems like Centos), lots of free memory available, no swapping going on, no apparent file descriptors issue. The only thing I can think of is a log file that was deleted while applications append to it. Disk space usage is slowly but continuously rising towards full capacity (~1k/min with very small decreases from time to time) Any explanation? Solution? du --max-depth=1 -h / 1.2G /usr 4.0K /cgroup 22M /lib64 11M /sbin 19M /etc 52K /dev 2.1G /var 4.0K /media 0 /sys 4.0K /selinux du: cannot access /proc/14024/task/14024/fd/4': No such file or directory du: cannot access<br/> /proc/14024/task/14024/fdinfo/4': No such file or directory du: cannot access /proc/14024/fd/4': No such file or directory du: cannot<br/> access/proc/14024/fdinfo/4': No such file or directory 0 /proc 18M /home 4.0K /logs 8.1M /bin 16K /lost+found 12M /tmp 4.0K /srv 35M /boot 79M /lib 56K /root 67M /opt 4.0K /local 4.0K /mnt 3.6G / df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 6.5G 1.4G 84% / tmpfs 3.7G 0 3.7G 0% /dev/shm sysctl fs.file-nr fs.file-nr = 864 0 761182

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  • df -h overreports disk space on VPS

    - by Rincewind42
    When I run the command df -h on my new Ubuntu linux vServer I get the following: # df -h Filesystem Size Used Avail Use% Mounted on /dev/hdv1 466G 33G 434G 7% / none 16M 0 16M 0% /tmp Running du -sh gives # du -sh du: cannot access `./proc/13624/task/13624/fd/4': No such file or directory du: cannot access `./proc/13624/task/13624/fdinfo/4': No such file or directory du: cannot access `./proc/13624/fd/4': No such file or directory du: cannot access `./proc/13624/fdinfo/4': No such file or directory 952M . The VPS should only have 5Gb of disk space but df reports 466Gb. How can I view the correct amount of disk space?

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  • system overrides my mount parameters in /etc/fstab

    - by valya
    [.../~]$ mount /dev/sda4 on / type ext4 (rw,commit=60,commit=0) [.../~]$ cat /etc/fstab # UNCONFIGURED FSTAB FOR BASE SYSTEM UUID=70739c04-fcb6-4747-803c-824f9c894f41 / ext4 defaults,commit=60 0 1 What can I do about it? It seems strange. I want to be able to set any commit time I want Edit: added /proc/mounts contents [.../~]$ cat /proc/mounts rootfs / rootfs rw 0 0 none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 none /proc proc rw,nosuid,nodev,noexec,relatime 0 0 none /dev devtmpfs rw,relatime,size=886332k,nr_inodes=221583,mode=755 0 0 none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0 /dev/disk/by-uuid/70739c04-fcb6-4747-803c-824f9c894f41 / ext4 rw,relatime,barrier=1,data=ordered 0 0 none /sys/kernel/debug debugfs rw,relatime 0 0 none /sys/kernel/security securityfs rw,relatime 0 0 none /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 none /var/run tmpfs rw,nosuid,relatime,mode=755 0 0 none /var/lock tmpfs rw,nosuid,nodev,noexec,relatime 0 0 /dev/sda3 /media/megahard fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 0 0 cgroup /dev/cgroup/cpu cgroup rw,relatime,cpu,release_agent=/usr/local/sbin/cgroup_clean 0 0 gvfs-fuse-daemon /home/va1en0k/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0

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  • Bash script throws, "syntax error near unexpected token `}'" when ran

    - by Tab00
    I am trying to write a script to monitor some battery statuses on a laptop running as a server. To accomplish this, I have already started to write this code: #! /bin/bash # A script to monitor battery statuses and send out email notifications #take care of looping the script for (( ; ; )) do #First, we check to see if the battery is present... if(cat /proc/acpi/battery/BAT0/state | grep 'present: *' == present: yes) { #Code to execute if battery IS present #No script needed for our application #you may add scripts to run } else { #if the battery IS NOT present, run this code sendemail -f [email protected] -t 214*******@txt.att.net -u NTA TV Alert -m "The battery from the computer is either missing, or removed. Please check ASAP." -s smtp.gmail.com -o tls=yes -xu [email protected] -xp *********** } #Second, we check into the current state of the battery if(cat /proc/acpi/battery/BAT0/state | grep 'charging state: *' == 'charging state: charging') { #Code to execute if battery is charging sendemail -f [email protected] -t 214*******@txt.att.net -u NTA TV Alert -m "The battery from the computer is charging. This MIGHT mean that something just happened" -s smtp.gmail.com -o tls=yes -xu [email protected] -xp *********** } #If it isn't charging, is it discharging? else if(cat /proc/acpi/battery/BAT0/state | grep 'charging state: *' == 'charging state: discharging') { #Code to run if the battery is discharging sendemail -f [email protected] -t 214*******@txt.att.net -u NTA TV Alert -m "The battery from the computer is discharging. This shouldn't be happening. Please check ASAP." -s smtp.gmail.com -o tls=yes -xu [email protected] -xp *********** } #If it isn't charging or discharging, is it charged? else if(cat /proc/acpi/battery/BAT0/state | grep 'charging state: *' == 'charging state: charged') { #Code to run if battery is charged } done I'm pretty sure that most of the other stuff works correctly, but I haven't been able to try it because it will not run. whenever I try and run the script, this is the error that I get: ./BatMon.sh: line 15: syntax error near unexpected token `}' ./BatMon.sh: ` }' is the error something super simple like a forgotten semicolon? Thanks -Tab00

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  • Performance Overhead of Encrypted /home

    - by SabreWolfy
    I have a netbook with Windows on the second partition and Xubuntu (/ and /home) on the third partition. I selected to encrypt my home folder during installation. The performance of the netbook is adequate for the small machine that it is, but I'm looking to improve performance. I could not find much information about the overhead (CPU or drive) associated with home partition encryption. I ran the following, writing to my home partition as well as the the mounted Windows partition: dd if=/dev/zero of=~/dummy bs=512 count=10240 dd if=/dev/zero of=/media/Windows/dummy bs=512 count=10240 The first returned 2.4MB/s and the second returned 2.5MB/s. Can I therefore deduce that there is very little overhead to home folder encryption? I'm not sure if the different filesystems will make any difference (/ and /home are ext3). Update 1 I don't know why I didn't use /tmp instead of the mounted Windows folder. Only /home is encrypted, so /tmp is unencrypted ext3. The results of the dd as above are astounding: ~: 2.4 MB/s /tmp: 42.6 MB/s Comments please? The reason I am asking this is that disk access on the netbook is noticeably slow. Update 2 I timed each of the dd operations with time: ~: real 0m2.217s user 0m0.028s sys 0m2.176s /tmp: real 0m0.152s user 0m0.012s sys 0m0.136s See also: discussion on UbuntuForums.org and bug report Edit: Output of mount: /dev/sda3 on / type ext3 (rw,noatime,errors=remount-ro,user_xattr,commit=600) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) fusectl on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/USER/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=USER) `

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  • The Mystery of the Vanishing Disk Space

    - by Oddthinking
    My disk space is dwindling by about 2GB a day! I only have a few more days before I run out of space. $ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda4 143G 126G 11G 93% / udev 491M 4.0K 491M 1% /dev tmpfs 200M 696K 199M 1% /run none 5.0M 0 5.0M 0% /run/lock none 499M 144K 499M 1% /run/shm /dev/sda2 1.9G 580M 1.2G 33% /tmp /dev/sda1 92M 29M 58M 33% /boot I have been searching for the biggest directories/log files, deleting and compressing. But I am still losing the war. Finally, I realised I have a big misunderstanding: julian@server1:~$ sudo du -h / | tail -n 1 16G / All of my files in / only add up to 16 GB. That leaves 110 GB unaccounted for! Clearly I have a misunderstanding: I thought the '/dev/sda4' line represented all the files visible from '/'. What should I be reading to understand where the other storage has gone? More details: I have an Ubuntu 11.10 server, that was set-up by data-center staff. It is running my own code (which is fairly prolific with log files, but otherwise doesn't store much stuff on the drive) duplicity for backups (which tends to store a lot of signature files) various other standard services, like Apache, nagios, etc. They are very lightly used. It has been up for about 4 months without a reboot. I lied about the du output (simplified it for effect). It also complained about not being able to access GVFS and the du processes's own resources. I believe they are irrelevant: . du: cannot access `/home/julian/.gvfs': Permission denied du: cannot access `/proc/10841/task/10841/fd/4': No such file or directory du: cannot access `/proc/10841/task/10841/fdinfo/4': No such file or directory du: cannot access `/proc/10841/fd/4': No such file or directory du: cannot access `/proc/10841/fdinfo/4': No such file or directory

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  • How to rebuild fstab automatically

    - by yvoyer
    I accidentally removed all the entries from the fstab files while doing a backup (Yeah, I know ;)). I would like to know if there is a way to rebuild it with the current mount options, since I did not restart the server since the deletion. If there is no such program, could anybody help me rebuild it. Using this, I have found the command to show the current setup, but I don't know what to do with it. $ sudo blkid /dev/sda1: UUID="3fc55e0f-a9b3-4229-9e76-ca95b4825a40" TYPE="ext4" /dev/sda5: UUID="718e611d-b8a3-4f02-a0cc-b3025d8db54d" TYPE="swap" /dev/sdb1: LABEL="Files_Server_Int" UUID="02fc2eda-d9fb-47fb-9e60-5fe3073e5b55" TYPE="ext4" /dev/sdc1: UUID="41e60bc2-2c9c-4104-9649-6b513919df4a" TYPE="ext4" /dev/sdd1: LABEL="Expansion Drive" UUID="782042B920427E5E" TYPE="ntfs" $ cat /etc/mtab /dev/sda1 / ext4 rw,errors=remount-ro 0 0 proc /proc proc rw,noexec,nosuid,nodev 0 0 none /sys sysfs rw,noexec,nosuid,nodev 0 0 none /sys/fs/fuse/connections fusectl rw 0 0 none /sys/kernel/debug debugfs rw 0 0 none /sys/kernel/security securityfs rw 0 0 none /dev devtmpfs rw,mode=0755 0 0 none /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0 none /dev/shm tmpfs rw,nosuid,nodev 0 0 none /var/run tmpfs rw,nosuid,mode=0755 0 0 none /var/lock tmpfs rw,noexec,nosuid,nodev 0 0 none /lib/init/rw tmpfs rw,nosuid,mode=0755 0 0 none /var/lib/ureadahead/debugfs debugfs rw,relatime 0 0 /dev/sdc1 /home ext4 rw 0 0 /dev/sdb1 /media/Files_Server ext4 rw 0 0 binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0 /dev/sdd1 /media/Expansion\040Drive fuseblk rw,nosuid,nodev,allow_other,blksize=4096,default_permissions 0 0 gvfs-fuse-daemon /home/yvoyer/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=yvoyer 0 0 /dev/sdd1 /media/Backup500 fuseblk rw,nosuid,nodev,sync,allow_other,blksize=4096,default_permissions 0 0 /dev/sr0 /media/DIR-615 iso9660 ro,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 0 0 gvfs-fuse-daemon /home/cdrapeau/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=cdrapeau 0 0

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  • Wake laptop when lid is opened?

    - by crackout12
    I have a SAMSUNG laptop, which by the experience in the last months, has been a great one. I am actually implementing some functionality to it, and since I noticed, I am able to wake up my laptop from sleep by just opening the lid on Windows 7, however, I need to press to power button to wake up in Ubuntu. Using a program called i-nex, I noted that the kernel DOES dettect a "lid switch", and I am looking forward to use it to wake up function. Any ideas? UPDATE: Thanks @yossile for bringing up some clues! However, output of command cat /proc/acpi/wakeup does not show the LID device. I still tried the second set of commands you gave me with no effect. Then I tried experimenting, guessing that LID should be named by other value, so I tried enabling the others. No victory so far. But I noticed that devices that did not have any pci listings were disabled at all time no matter what I tried. Here is the output of command cat /proc/acpi/wakeup: root@samsung:~# cat /proc/acpi/wakeup Device S-state Status Sysfs node PCE4 S4 *disabled pci:0000:00:04.0 SBAZ S4 *disabled pci:0000:00:14.2 P0PC S4 *disabled pci:0000:00:14.4 GEC S4 *disabled PE20 S4 *disabled pci:0000:00:15.0 PE21 S4 *disabled PE22 S4 *disabled pci:0000:00:15.2 PE23 S4 *disabled PWRB S5 *enabled So maybe it could be that LID is either GEC,PE21, or PE23? Still, there is /proc/acpi/button/lid/LID/state file which shows that LID is opened. Any more ideas?

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  • Hide icons encrypted file system partitions in Nautilus

    - by Eddy Pronk
    I've installed Ubuntu 10.04 from the alternate CD. It has an encrypted root and swap partition. The root partition is visible in Nautilus as 'File Syste' icon. There is another icon "216 GB Filesystem". If I click it says: Unable to mount 216 GB Filesystem. /dev/mapper/sda5_crypt is mounted. Then there is another icon "6.1 GB Swap Space". If I click it it says: Unable to mount 6.1 GB Swap Space. Not a mountable file system. How can I hide these last two icons? Partition layout: $ sudo fdisk -l /dev/sda [sudo] password for eddyp: Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xa6e92df4 Device Boot Start End Blocks Id System /dev/sda1 1 11749 94373811 7 HPFS/NTFS /dev/sda2 11871 38914 217219073 5 Extended /dev/sda3 * 11750 11871 976896 83 Linux /dev/sda5 11871 38167 211220480 83 Linux /dev/sda6 38167 38914 5997568 83 Linux Partition table entries are not in disk order Mounted as: $ mount /dev/mapper/sda5_crypt on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) /dev/sda3 on /boot type ext4 (rw) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/eddyp/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=eddyp) /dev/sda1 on /media/S3A6595D003 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)

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  • Galaxy Note II MTP on Ubuntu 12.04

    - by Anass Ahmed
    I bought a branding new Galaxy Note II and I tried to mount its storage to my ubuntu laptop. As you know, Android 4.0+ uses MTP by default. Android 4.1 doesn't support USB Mass Storage anymore! So I have to use MTP to open my files via USB. I followed this article to get it work. It worked only for External Memory Card. but the internal cannot be reached! $mount /dev/sda3 on / type ext4 (rw) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) /dev/sda5 on /media/Islamics type fuseblk (rw,noexec,nosuid,nodev,allow_other,blksize=4096) /dev/sda8 on /media/Technology type fuseblk (rw,noexec,nosuid,nodev,allow_other,blksize=4096) /dev/sda7 on /media/Misc type fuseblk (rw,noexec,nosuid,nodev,allow_other,blksize=4096) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/anass/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=anass) gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev) mtpfs on /media/GalaxyNote2 type fuse.mtpfs (rw,nosuid,nodev,allow_other,user=anass)

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  • Cryptswap boot error - can't mount?

    - by woody
    I believe i have my swap set up but am not sure because on start up it says that it is something along the lines of "could not mount /dev/mapper/cryptswap1 M for manual S for skip". But it appears to be mounted? I have already tried this solution with no success. When i run free -m the output is: total used free shared buffers cached Mem: 3887 769 3117 0 54 348 -/+ buffers/cache: 366 3520 Swap: 4026 0 4026 and sudo bklid is: /dev/sda1: UUID="9fb3ccd6-3732-4989-bfa4-e943a09f1153" TYPE="ext4" /dev/mapper/cryptswap1: UUID="bd9fe154-8621-48b3-95d2-ae5c91f373fd" TYPE="swap" and cat /etc/crypttab is: cryptswap1 /dev/sda5 /dev/urandom swap,cipher=aes-cbc-essiv:sha256 my /etc/fstab is: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda1 during installation UUID=9fb3ccd6-3732-4989-bfa4-e943a09f1153 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation #UUID=bb0e378e-8742-435a-beda-ae7788a7c1b0 none swap sw 0 0 /dev/mapper/cryptswap1 none swap sw 0 0 cat /proc/swaps output is: Filename Type Size Used Priority /dev/dm-0 partition 4123644 0 -1 Is my swap not setup correctly or how can i fix my boot message?

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  • Where does the YouTube video files stored on system nowadays?

    - by souravc
    When I open a youtube video with firefox I could not find any video file inside ~/.mozilla/firefox/<some_string>.default/Cache/. I also tried with google-chrome like, ps ax | grep flash ls -l /proc/[*PID*]/fd | grep Flash But again /proc/[*PID*]/fd does not have any video like file. ls -l /proc/[*PID*]/fd have some results like lrwx------ 1 root root 64 Nov 9 12:18 22 -> /run/shm/.com.google.Chrome.eOsHNu (deleted) lrwx------ 1 root root 64 Nov 9 12:18 23 -> /run/shm/.com.google.Chrome.p8h6BL (deleted) Result of ls -l /proc/[*PID*]/fd | grep Flash for some videos from other site is like lrwx------ 1 root root 64 Nov 9 12:35 26 -> /home/username/.config/google-chrome/Default/Pepper Data/Shockwave Flash/.com.google.Chrome.QMzxP8 (deleted) But could not be copied. Then what are the places where firefox or google-chrome stores the streaming videos? And is it possible to recover(copy) a video from there to watch them offline? P.S I have other ways(downloaders) to have streaming videos, but my question is very specific.

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  • Used mountmanager now Ubuntu hangs on boot

    - by fpghost
    I was using MountManager in Ubuntu 12.04 to set user permissions in mounting hard drives. I set each partititon to be mountable by everyone instead of admin only. Then I clicked Apply in the file menu and it gave me the message successfully updated. Upon restarting Ubuntu, just hangs on the splash screen and does not boot any further. Windows still boots fine. How can I fix these? please help thanks From LiveUSB: my fstab looks like: overlayfs / overlayfs rw 0 0 tmpfs /tmp tmpfs nosuid,nodev 0 0 /dev/sda5 swap swap defaults 0 0 /dev/sda7 swap swap defaults 0 0 Is this corrupted? Other things that may be helpful: blkid returns /dev/loop0: TYPE="squashfs" /dev/sda1: LABEL="System Reserved" UUID="0AF26C31F26C22E5" TYPE="ntfs" /dev/sda2: UUID="5E1C88E31C88B813" TYPE="ntfs" /dev/sda3: UUID="94B2BB7DB2BB6282" TYPE="ntfs" /dev/sda5: UUID="41b66b9a-2b48-45cf-b59d-cd50e41ec971" TYPE="swap" /dev/sda6: UUID="c73ca79e-4fa4-4bde-967e-670593736f6a" TYPE="ext4" /dev/sda7: UUID="c05d659f-103c-4444-9dc4-3121b9e081d6" TYPE="swap" /dev/sdb1: LABEL="PENDRIVE" UUID="1DE8-0A49" TYPE="vfat" and cat /proc/mounts rootfs / rootfs rw 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 udev /dev devtmpfs rw,relatime,size=1950000k,nr_inodes=206759,mode=755 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /run tmpfs rw,nosuid,relatime,size=783056k,mode=755 0 0 /dev/sdb1 /cdrom vfat rw,relatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,erro rs=remount-ro 0 0 /dev/loop0 /rofs squashfs ro,noatime 0 0 tmpfs /cow tmpfs rw,noatime,mode=755 0 0 /cow / overlayfs rw,relatime,lowerdir=//filesystem.squashfs,upperdir=/cow 0 0 none /sys/fs/fuse/connections fusectl rw,relatime 0 0 none /sys/kernel/debug debugfs rw,relatime 0 0 none /sys/kernel/security securityfs rw,relatime 0 0 tmpfs /tmp tmpfs rw,nosuid,nodev,relatime 0 0 none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0 none /run/shm tmpfs rw,nosuid,nodev,relatime 0 0 gvfs-fuse-daemon /home/ubuntu/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,relatime,user_id=999,group_id=999 0 0

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  • No sound, can't adjust alsamixer volume

    - by user734613
    I have no sound on my ubuntu and I do not know why. I saw a lot of posts about that, I tried a lots of solutions that I found (especially this one) but it still does not work. I suspect alsamixer. I can't adjust the sound. http://img15.hostingpics.net/pics/447765Screenshotfrom20120621140430.png I tried to reinstall alsa mixer using this tutorial but it seems the package does not exist anymore. E: Unable to locate package linux-alsa-driver-modules-3.2.0-25-generic E: Couldn't find any package by regex 'linux-alsa-driver-modules-3.2.0-25-generic' Here are my configuration: cat /proc/driver/nvidia/version NVRM version: NVIDIA UNIX x86_64 Kernel Module 295.40 Thu Apr 5 21:37:00 PDT 2012 GCC version: gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) aplay -l List of PLAYBACK Hardware Devices ** card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 grep eld_valid /proc/asound/NVidia/eld* /proc/asound/NVidia/eld#0.0:eld_valid 0 /proc/asound/NVidia/eld#0.1:eld_valid 0 Thanks in advance for your help.

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  • Convert Excel File 'xls' to CSV, CAUTION: Bumps Ahead

    - by faizanahmad
    The task was to provide users with an interface where they can upload the 'csv' files, these files were to be processed and loaded to Database by a Console application. The code in Console application could not handle the 'xls' files so we thought, OK, lets convert 'xls' to 'csv' in the code, Seemed like fun. The idea was to convert it right after uploading within 'csv' file. As Microsoft does not recommend using the  Excel objects in ASP.NET, we decided to use the Jet engine to open xls. (Ace driver is used for xlsx) The code was pretty straight, can be found on following links: http://www.c-sharpcorner.com/uploadfile/yuanwang200409/102242008174401pm/1.aspx http://www.devasp.net/net/articles/display/141.html FIRST BUMP 'OleDbException (0x80004005): Unspecified error' ( Impersonation ): The ablove code ran fine in my test web site and test console application, but it gave an 'OleDbException (0x80004005): Unspecified error' in main web site, turns out imperonation was set to True and as soon as I changed it to False, it did work. on My XP box, web site was running under user                   'ASPNET'  with imperosnation set to FALSE                   'IUSR_*' i.e IIS guest user with impersonation set to TRUE The weired part was that both users had same rights on the folders I was saving files to and on Excel app in DCOM Config.  We decided to give it a try on Windows Server 2003 with web site set to windows authentication ( impersonation = true ) and yes it did work. SECOND BUMP 'External table not in correct format': I got this error with some files and it appeared that the file from client has some metadata issues  ( when I opened the file in Excel and try to save it ,excel  would give me this error saying File can not be saved in current format ) and the error was caused by that. Some people were able to reslove the error by using "Extended Properties=HTML Import;" in connection string. But it did not work for me. We decided to detour from here and use Excel object :( as we had no control on client setting the meta deta of Excel files. Before third bump there were a ouple of small thingies like 'Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005' Fix can be found at http://blog.crowe.co.nz/archive/2006/03/02/589.aspx THIRD BUMP ( Could not get rid of the EXCEL process  ):  I has all the code in place to 'Quiet' the excel, but, it just did not work. work around was done to Kill the process as we knew no other application on server was using EXCEL.  The normal steps to quite the excel application worked just fine in console application though.   FOURTH BUMP: Code worked with one file 1 on my machine and with the other file 2 code will break. and the same code will work perfectly fine with file 2 on some other machine . We moved it to QA  ( Windows Server 2003 )and worked with every file just perfect. But , then there was another problem: one user can upload it and second cant, permissions on folder and DCOM Conifg checked. Another Detour: Uplooad the xls as it is and convert in Console application.   Lesson Learnt:  If its 'xlsx' use 'ACE Driver' or read xml within excel as recommneded by MS. If xls and you know its always going to be properly formatted  'jet Engine'  Code: Imports Microsoft.Office.Interop Private Function ConvertFile(ByVal SourceFolder As String, ByVal FileName As String, ByVal FileExtension As String)As Boolean     Dim appExcel As New Excel.Application     Dim workBooks As Excel.Workbooks = appExcel.Workbooks     Dim objWorkbook As Excel.Workbook      Try                   objWorkbook = workBooks.Open(CompleteFilePath )                            objWorkbook.SaveAs(Filename:=CObj(SourceFolder & FileName & ".csv"), FileFormat:=Excel.XlFileFormat.xlCSV)       Catch ex As Exception         GenerateAlert(ex.Message().Replace("'", "") & " Error Converting File to CSV.")         LogError(ex )         Return False      Finally                      If Not(objWorkbook is Nothing) then               objWorkbook.Close(SaveChanges:=CObj(False))           End If           ReleaseObj(objWorkbook)                                      ReleaseObj(workBooks)           appExcel.Quit()           ReleaseObj(appExcel)                                 Dim proc As System.Diagnostics.Process           For Each proc In System.Diagnostics.Process.GetProcessesByName("EXCEL")               proc.Kill()           Next         DeleteSourceFile(SourceFolder & FileName & FileExtension)     End Try  Return True  End Function   Private Sub ReleaseObj(ByVal o As Object)     Try      System.Runtime.InteropServices.Marshal.ReleaseComObject(o)   Catch ex As Exception           LogError(ex )   Finally      o = Nothing    End Try End Sub     Protected Sub DeleteSourceFile(Byval CompleteFilePath As string)         Try             Dim MyFile As FileInfo = New FileInfo(CompleteFilePath)             If  MyFile.Exists Then                 File.Delete(CompleteFilePath)             Else              Throw New FileNotFoundException()             End If         Catch ex As Exception             GenerateAlert( " Source File could not be deleted.")              LogError(ex)         End Try     End Sub  The code to kill the process ( Avoid it if you can ): Dim proc As System.Diagnostics.Process For Each proc In System.Diagnostics.Process.GetProcessesByName("EXCEL")     proc.Kill() Next

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  • combining ruby and C++

    - by Shingetsu
    Hello /* programmers */ (I usually hang in SO) I've been discussing a conceptual project with a friend of mine and the the most effective way we've seen of doing it is writing the engine in C++ while the logic would be done in Ruby. However, we would need data to be passed around often, for example: Engine reports that A happened, that gets triggered in a proc array (event "A" is passed but proc doesnt use it) Ruby decides that we need to wait for B to happen Ruby adds a proc to an array. The array of procs is iterated during each cycle in the C++ engine C++ engine reports that B happened and passes "event B (should be a ruby object) Ruby receives event B and decides what to do next I don't work with multiple languages often, and was wondering if it's possible to implement things in this way. I know that there's the ruby VALUE in C++, but would like to know the standard way of combining the two. (of course I know ruby follows the perl "more than 1 way to do it", but there's often a standardized way)

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