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  • How to blacklist a problem Wi-Fi access point by MAC address in Mac OS X

    - by Sam Alexander
    So I am a small Mac-user cog in a larger Windows-based network machine. The network here works fine for most everyone else (on PCs), but I have random timeouts and issues with the Wi-Fi. Luckily, I have identified a few problem access points by MAC address (via their log messages in Console.app). Is it possible to tell my AirPort on my Macbook to avoid those access points, and only speak with the access points who are far less touchy about me drinking the Apple kool-aid? All of the points are on the same network SSID.

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  • Linux Server Performance Monitoring

    - by Jon
    I'm looking to monitor performance on my Linux servers (which happen to be Centos). What are the best tools for monitoring things in realtime such as: Disk Performance I/O, swapping etc.. CPU Performance Looking for low level tools, rather than web based tools such as Nagios, Ganglia etc... n.b. I'd like to know exactly what each tool does rather than just having a list of random toolnames if possible please. Why the tool is a better option than others would be good also.

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  • gen-msg.map missing in Snort rules?

    - by TheLQ
    I am trying to install Snort 2.8.4.1 (only package available in the repos) with Barnyard2 with limited success. I've managed to fix everything but this: [lordquackstar@quackwall rules]$ sudo barnyard2 -c /etc/snort/barnyard2.conf -d /var/log/snort -f snort.u2 -w /etc/snort/barny Password: Running in Continuous mode --== Initializing Barnyard2 ==-- Initializing Input Plugins! Initializing Output Plugins! Parsing config file "/etc/snort/barnyard2.conf" ERROR: Unable to open Generator file "/etc/snort/gen-msg.map": No such file or directory ERROR: Stat check on log dir (/var/log/barnyard2) failed: No such file or directory. Fatal Error, Quitting.. The gen-msg.map error is puzzling me. The rulesets that come with the package do not contain this file. The newish rules I just downloaded from Snort.org for version 2.8.6.1 don't have this file. The only file that looks close is called sid-msg.map, but that's the wrong one. Where can I obtain this file? Just in case it matters: The packages come from the ClearOS repositories (OS is based off of CentOS). I'm running CentOS 5.2

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  • Python: how do I install SciPy on 64 bit Windows?

    - by Peter Mortensen
    How do I install SciPy on my system? Update 1: for the NumPy part (that SciPy depends on) there is actually an installer for 64 bit Windows: numpy-1.3.0.win-amd64-py2.6.msi (is direct download URL, 2310144 bytes). Running the SciPy superpack installer results in this message in a dialog box: "Cannot install. Python version 2.6 required, which was not found in the registry." I already have Python 2.6.2 installed (and a working Django installation in it), but I don't know about any Registry story. The registry entries seems to already exist: REGEDIT4 [HKEY_LOCAL_MACHINE\SOFTWARE\Python] [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore] [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6] [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\Help] [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\Help\Main Python Documentation] @="D:\\Python262\\Doc\\python262.chm" [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\InstallPath] @="D:\\Python262\\" [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\InstallPath\InstallGroup] @="Python 2.6" [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\Modules] [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\PythonPath] @="D:\\Python262\\Lib;D:\\Python262\\DLLs;D:\\Python262\\Lib\\lib-tk" What I have done so far: Step 1 Downloaded the NumPy superpack installer numpy-1.3.0rc2-win32-superpack-python2.6.exe (direct download URL, 4782592 bytes). Running this installer resulted in the same message, "Cannot install. Python version 2.6 required, which was not found in the registry.". Update: there is actually an installer for NumPy that works - see beginning of the question. Step 2 Tried to install NumPy in another way. Downloaded the zip package numpy-1.3.0rc2.zip (direct download URL, 2404011 bytes), extracted the zip file in a normal way to a temporary directory, D:\temp7\numpy-1.3.0rc2 (where setup.py and README.txt is). I then opened a command line window and: d: cd D:\temp7\numpy-1.3.0rc2 setup.py install This ran for a long time and also included use of cl.exe (part of Visual Studio). Here is a nearly 5000 lines long transcript (230 KB). This seemed to work. I can now do this in Python: import numpy as np np.random.random(10) with this result: array([ 0.35667511, 0.56099423, 0.38423629, 0.09733172, 0.81560421, 0.18813222, 0.10566666, 0.84968066, 0.79472597, 0.30997724]) Step 3 Downloaded the SciPy superpack installer, scipy-0.7.1rc3- win32-superpack-python2.6.exe (direct download URL, 45597175 bytes). Running this installer resulted in the message listed in the beginning Step 4 Tried to install SciPy in another way. Downloaded the zip package scipy-0.7.1rc3.zip (direct download URL, 5506562 bytes), extracted the zip file in a normal way to a temporary directory, D:\temp7\scipy-0.7.1 (where setup.py and README.txt is). I then opened a command line window and: d: cd D:\temp7\scipy-0.7.1 setup.py install This did not achieve much - here is a transcript (about 95 lines). And it fails: >>> import scipy as sp2 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named scipy Platform: Python 2.6.2 installed in directory D:\Python262, Windows XP 64 bit SP2, 8 GB RAM, Visual Studio 2008 Professional Edition installed. The startup screen of the installed Python is: Python 2.6.2 (r262:71605, Apr 14 2009, 22:46:50) [MSC v.1500 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> Value of PATH, result from SET in a command line window: Path=D:\Perl64\site\bin;D:\Perl64\bin;C:\Program Files (x86)\PC Connectivity Solution\;D:\Perl\site\bin;D:\Perl\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;d:\Program Files (x86)\WinSCP\;D:\MassLynx\;D:\Program Files (x86)\Analyst\bin;d:\Python262;d:\Python262\Scripts;D:\Program Files (x86)\TortoiseSVN\bin;D:\Program Files\TortoiseSVN\bin;C:\WINDOWS\system32\WindowsPowerShell\v1.0;D:\Program Files (x86)\IDM Computer Solutions\UltraEdit\

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  • Lenovo Mini Wireless Keyboard N5901: Remap orange "My Computer" button

    - by Jon Schneider
    I have a Lenovo Mini Wireless Keyboard N5901 (a.k.a. Part No. 57Y6336) that I'm using with an HTPC running Windows 7. The remote comes with an orange button in the top-left corner that by default, when pressed, opens the Windows "My Computer" window. I would like to remap / reprogram this button to act like the green "Windows Media Center" button instead on a Windows Media Center (WMC) remote; that is, open Windows Media Center if it isn't already open, or go to the WMC homepage if WMC is already open. I've tried several keyboard-remapping utilities (as recommended in other, more general "how to remap keyboard key?" SuperUser.com questions) including SharpKeys, Key Mapper, and KeyTweak, with no luck so far. None of these utilities recognize the orange button -- they all do recognize that some key was pressed, but display a value for the key of "unsupported" or something similar. I was able to use a utility called Keyboard Scan Code Generator to determine that a press of the orange button has a KeyData value of 16777217 (0x1000001), and a "Virtual Code" value of 182. (The other "media" buttons on the N5901 have the same KeyData value, but different Virtual Code values). I'm not sure at this point where in Windows this keystroke is being interpreted as a command to open "My Computer." There is no special software / driver for this device; it worked out of the box with Windows 7, no special driver install necessary. Is there any way to accomplish this? Thanks in advance for any suggestions!

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  • Linux Server Performance Monitoring

    - by Jon
    I'm looking to monitor performance on my Linux servers (which happen to be Centos). What are the best tools for monitoring things in realtime such as: Disk Performance I/O, swapping etc.. CPU Performance Looking for low level tools, rather than web based tools such as Nagios, Ganglia etc... n.b. I'd like to know exactly what each tool does rather than just having a list of random toolnames if possible please. Why the tool is a better option than others would be good also.

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  • Bypassing Router's DNS Settings

    - by Ramon Marco Navarro
    Is there a way to bypass my ISP provided CPE/router's DNS settings? I'd like to use OpenDNS but I am unable to access the administrator acount of the CPE. I tried logging in using the default passwords (admin/admin, admin/1234, etc) to no avail. I found out later that the admin password is generated using a generator where you input the CPE's MAC address. I tried emailing the manufacturer of the CPE (Huawei, the CPE is Huawei BM625) and my ISP but they aren't replying. I also saw similar queries (lots of them!) at Huawei's forums, without a single reply. So as a last resort, I'd like to know a way to bypass the CPE's DNS settings. My subscription is for a WiMAX service. I'm using Windows 7 and have already set the DNS settings for the Local Area Connection. But I still am not seeing the "You are already using OpenDNS" text at OpenDNS's site. And when explicitly using the OpenDNS servers I still seem to get 208.69.38.150 rather than the expected 208.69.38.160: nslookup www.opendns.com. 208.67.222.222 Server: resolver1.opendns.com Address: 208.67.222.222 Non-authoritative answer: Name: www.opendns.com Address: 208.69.38.150

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  • bad pool header 0x00000019 in windows 7 home premium when connecting to net followed by BSOD.

    - by shankar
    Hi, I am have random blue screen errors with an error code of bad pool header 0x00000019 whenever I try going online. I use a usb datacard/modem but when I try logging in using a regular dsl/broadband connection, I have the same issue. I had searched the query in windows knowledge base which said it is an issue with windows 7 and have provided a hot fix which they do not gaurentee. My vendor says something is wrong with my ram and has ordered for a new set of ram, but in my opinion if it was a ram related issue, the crashes should have occured even while playing games which are supposed to be ram intensive...If you need the mini dumps I can provide you the same..Kindly revert back..

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  • Unknown and strange RDP successful logins in EventViewer

    - by Yousef
    I have a Windows Server 2008 R2 with a valid IP, and recently I've found hundreds of unknown and strange RDP successful logins logged in EventViewer. Here are some details: They are not similar to normal logins, they happen like every second in a while even when I myself am logged in to the server. Event reads "Remote Desktop Services: User authentication succeeded" in "Microsoft-Windows-TerminalServices-RemoteConnectionManager/Operational", Event ID 1149 They seem to use some random user accounts without a domain name. I'm pretty sure that I don't have those local user accounts, and the server doesn't belong to any domain. Legitimate RDP logins have a valid user account and workgroup name, but those logins use unknown user names without any workgroup. Support staff couldn't help me and I'm very curious what are these strange logins. Are they some sort of brute force attack? so why does it read "Successful"? Am I being hacked? Why do they keep happening continually?

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  • IPSec VPN's being dropped by router and will not re-establish

    - by David Gard
    We have 3 sites, with our two remote sites connection to head office via LAN-to-LAN VPN's. All 3 sites use DrayTek 2900's with firware version v3.3.1.1_RC2 (this is a release candidate that DrayTek suggested I try, but sadly it made no difference). The only way to re-establish the VPN's once they have been dropped is to restart the router. Head office is set to dial out to both sites, with both the 'Always on' and 'Enable PING to keep alive' (pinging a server in the remote offices) options ticked. However, at random intervals the VPN's drop, logging IKE_RELEASE VPN : Dial-out Profile Index = 7, Name = Shepton (for one connection, and '6' & 'Wincanton' for the other connection). I first tried swapping the router with one at another site, and then had all three replaced, but that failed to solve the problem. Is anyone aware of anything that could cause the VPN's to drop randomly like this? Thanks.

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  • RegLoadAppKey working fine on 32-bit OS, failing on 64-bit OS, even if both processes are 32-bit

    - by James Manning
    I'm using .NET 4 and the new RegistryKey.FromHandle call so I can take the hKey I get from opening a registry file with RegLoadAppKey and operate on it with the existing managed API. I thought at first it was just a matter of a busted DllImport and my call had an invalid type in the params or a missing MarshalAs or whatever, but looking at other registry functions and their DllImport declarations (for instance, on pinvoke.net), I don't see what else to try (I've had hKey returned as both int and IntPtr, both worked on 32-bit OS and fail on 64-bit OS) I've got it down to as simple a repro case as I can - it just tries to create a 'random' subkey then write a value to it. It works fine on my Win7 x86 box and fails on Win7 x64 and 2008 R2 x64, even when it's still a 32-bit process, even run from a 32-bit cmd prompt. EDIT: It also fails in the same way if it's a 64-bit process. on Win7 x86: INFO: Running as Admin in 32-bit process on 32-bit OS Was able to create Microsoft\Windows\CurrentVersion\RunOnceEx\a95b1bbf-7a04-4707-bcca-6aee6afbfab7 and write a value under it on Win7 x64, as 32-bit: INFO: Running as Admin in 32-bit process on 64-bit OS Unhandled Exception: System.UnauthorizedAccessException: Access to the registry key '\Microsoft\Windows\CurrentVersion\RunOnceEx\ce6d5ff6-c3af-47f7-b3dc-c5a1b9a3cd22' is denied. at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str) at Microsoft.Win32.RegistryKey.CreateSubKeyInternal(String subkey, RegistryKeyPermissionCheck permissionCheck, Object registrySecurityObj, RegistryOptions registryOptions) at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey) at LoadAppKeyAndModify.Program.Main(String[] args) on Win7 x64, as 64-bit: INFO: Running as Admin in 64-bit process on 64-bit OS Unhandled Exception: System.UnauthorizedAccessException: Access to the registry key '\Microsoft\Windows\CurrentVersion\RunOnceEx\43bc857d-7d07-499c-8070-574d6732c130' is denied. at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str) at Microsoft.Win32.RegistryKey.CreateSubKeyInternal(String subkey, RegistryKeyPermissionCheck permissionCheck, Object registrySecurityObj, RegistryOptions registryOptions) at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey, RegistryKeyPermissionCheck permissionCheck) at LoadAppKeyAndModify.Program.Main(String[] args) source: class Program { static void Main(string[] args) { Console.WriteLine("INFO: Running as {0} in {1}-bit process on {2}-bit OS", new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator) ? "Admin" : "Normal User", Environment.Is64BitProcess ? 64 : 32, Environment.Is64BitOperatingSystem ? 64 : 32); if (args.Length != 1) { throw new ApplicationException("Need 1 argument - path to the software hive file on disk"); } string softwareHiveFile = Path.GetFullPath(args[0]); if (File.Exists(softwareHiveFile) == false) { throw new ApplicationException("Specified file does not exist: " + softwareHiveFile); } // pick a random subkey so it doesn't already exist var keyPathToCreate = "Microsoft\\Windows\\CurrentVersion\\RunOnceEx\\" + Guid.NewGuid(); var hKey = RegistryNativeMethods.RegLoadAppKey(softwareHiveFile); using (var safeRegistryHandle = new SafeRegistryHandle(new IntPtr(hKey), true)) using (var appKey = RegistryKey.FromHandle(safeRegistryHandle)) using (var runOnceExKey = appKey.CreateSubKey(keyPathToCreate)) { runOnceExKey.SetValue("foo", "bar"); Console.WriteLine("Was able to create {0} and write a value under it", keyPathToCreate); } } } internal static class RegistryNativeMethods { [Flags] public enum RegSAM { AllAccess = 0x000f003f } private const int REG_PROCESS_APPKEY = 0x00000001; // approximated from pinvoke.net's RegLoadKey and RegOpenKey // NOTE: changed return from long to int so we could do Win32Exception on it [DllImport("advapi32.dll", SetLastError = true)] private static extern int RegLoadAppKey(String hiveFile, out int hKey, RegSAM samDesired, int options, int reserved); public static int RegLoadAppKey(String hiveFile) { int hKey; int rc = RegLoadAppKey(hiveFile, out hKey, RegSAM.AllAccess, REG_PROCESS_APPKEY, 0); if (rc != 0) { throw new Win32Exception(rc, "Failed during RegLoadAppKey of file " + hiveFile); } return hKey; } }

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  • Are spurious TCP connections on port 53 a problem?

    - by Darren Greaves
    I run a server which amongst other things uses tinydns for DNS and axfrdns for handling transfer requests from our secondary DNS (another system). I understand that tinydns uses port 53 on UDP and axfrdns uses port 53 on TCP. I've configured axfrdns to only allow connections from my agreed secondary host. I run logcheck to monitor my logs and every day I see spurious connections on port 53 (TCP) from seemingly random hosts. They usually turn out to be from ADSL connections. My question is; are these innocent requests or a security risk? I am happy to block repeat offenders using iptables but don't want to block innocent users of one of the websites I host. Thanks, Darren.

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  • Does SCP lock the file it is transfering?

    - by thadon
    Have a situation where we have an application log sitting out on an AIX server. The log is being continually written to from the application, and we have users on Windows who want to view the file. What they've been doing is using WinSCP to transfer the file to their desktop and they open it using a text editor. What I think might be happening is scp is locking the file for the duration of the transfer, and the application ceases to be able to write to the file. The reason I believe this is the log file will stop growing at random points during the day. Is that what perhaps is going on?

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  • How to consistently enable screen sharing with iChat

    - by Joel
    I am unable to consistently get screen sharing in iChat to work. When I select an online buddy, under the Buddies menu the options "Share my screen with Bob" and "Ask to Share Bob's Screen" are disabled. Sometimes starting a chat with that person will enable the screen sharing but often not. Once its enabled it works fine but I have no idea what the key is to getting it enabled. It seems fairly random when it works. This is over the public internet using Google Talk. Both ends are running OSX 10.5.

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  • Running a powershell script at startup

    - by RandellK02
    I am writing a script to remove a computer from the domain, rename it, then add it back. It works fine when I set the trigger to AtLogOn but when I switch to AtStartUp I run into some issues. I get this error when it restarts to run the first scheduled task: 0x8007051F: There are currently no logon servers available to service the logon request. I suspect the script tries to run with no network connection set up so I tested using the RandomDelay parameter, and it worked like its suppose to. I cant rely on a random delay so I am looking for an alternative. Is there a way to test the network status before the script begins or a way to delay the script a specific amount of time? I am using Register-ScheduledJob provided by Powershell 3.0 Thanks in advance

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  • How to consistently enable screen sharing with iChat

    - by Joel
    I am unable to consistently get screen sharing in iChat to work. When I select an online buddy, under the Buddies menu the options "Share my screen with Bob" and "Ask to Share Bob's Screen" are disabled. Sometimes starting a chat with that person will enable the screen sharing but often not. Once its enabled it works fine but I have no idea what the key is to getting it enabled. It seems fairly random when it works. This is over the public internet using Google Talk. Both ends are running OSX 10.5.

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  • Certificate Authority issuing Basic EFS certificates without Autoenroll

    - by James Jones
    We have observed some puzzling behavior from the CAs we have set up in both the past and present. For some reason unknown to us, it seems that our CAs are randomly issuing "Basic EFS" certificates to our users. This is evident through the "Issued Certificates" log on the CA. I personally set up a CA yesterday, and the instant that I installed certificate services it started dishing out Basic EFS certs to our users. They seem to be issued at random times: 1:51am, 2:20am, then 7:54am, then 8:03am... etc I looked at the certificate template for Basic EFS and there isn't even an option for Autoenrollment, so I'm seriously in a state of "WTF?!"... Can anyone clue me in as to why my CA has a mind of its own? Do CAs tend to become self-aware and lash out at their owners? Please help...

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  • 3ds Max with Parallels on a MacBook Pro

    - by Eric Koslow
    I am trying to get 3ds Max to run under Parallels on my 15'' MacBook Pro, but it is ultimatly failing. To get any decent frame rate I have to put all the setting to low, but even then I get weird graphical "gliches" when I play. Controlls are unresponsive and very laggy as well. I have increased the video memory to 256mb, but that doesn't seem to have helped. What else should I do to make the game playable? Mod-edit: I changed TF2 with a "random" 3D modelling software, which solves gaming related issues.

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  • General purpose ticketing/tech support system [closed]

    - by crazybyte
    Possible Duplicate: What’s your favorite ticketing system? I was wondering if somebody could recommend me a very user friendly or simple general purpose ticketing/tech support system. I need something that is web based, preferably open-sourced/free software implemented using PHP, Ruby, Ruby on Rails or Java (as back end) with MySQL or PostgreSQL as database engine. I need something that is not development management oriented or project management oriented like Eventum or similar (random example), something to which the user can connect open a tech support request and be able to follow it until is solved or dropped.I need it to be open-sourced to be able to modify it if there is a need or extend it. I tried a number of such systems available and I found that osTicket or eTicket is something that it's close to what I need, but the code is somewhat flaky and some of the features are working badly or behaving strangely. Any thoughts/advice where to find something similar? Thanks!

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  • Late 2008 Unibody MacBook Pro, Snow Leopard EFI 1.8 downgrade

    - by SiLo
    Question: Does anyone know of an EFI downgrade for user on 1.8? I have found a 1.7 to 1.6 downgrade, but once on 1.8 this downgrade no longer works. Background: After upgrading to Snow Leopard, and installing the EFI 1.8 update (as recommended by Software Update), I have lost the ability to burn discs. This also includes when using external burners and when booting into Vista using Bootcamp. Other seemingly related problems to the EFI I have are, chronic overheating, random temporary beachball lockups, longer boot times. These 'other' problems have been solved for other users who experienced these problems on EFI 1.7, but were able to rollback to 1.6. I am looking for a solution that does not require sending my computer back to Apple.

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  • How to blacklist a problem wifi access point by MAC address in OSX

    - by Sam Alexander
    So I am a small mac-user cog in a larger windows-based network machine. The network here works fine for most everyone else (on PCs), but I have random timeouts and issues with the Wifi. Luckily, I have identified a few problem access points by MAC address (via their log messages in Console.app). Is it possible to tell my Airport on my Macbook to avoid those access points, and only speak with the access points who are far less touchy about me drinking the Apple kool-aid? All of the points are on the same network SSID.

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  • Bulk Email Verification Tool

    - by JoefrshnJoeclean
    I'm looking for a bulk email validation tool to parse a list of 60K email addresses. Our company sends out 8 Million email newsletters a month via our mailing list software - MDAEMON. MDAEMON ships with a bad email address validator but I'm not quite comfortable with its results as it captures returned email addresses with SMTP errors of 500 and above. (We want to keep emails that return a Full Mailbox error or bounce backs that see us as SPAM) To further prune the list, we use Advanced Email Verifier. But I tested a random sample of this list and found a couple emails to be valid. Since our company relies heavily on traffic from our newsletters, I am wondering what other Windows-based bulk email verifier tools are out there?

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  • Website pages very slow to load on first access

    - by Merianos Nikos
    I have a production web server that makes sites to be very slow when load for first time. After the first time all connections are normal and fast. In the following screen you can see the first test I have run for a random site in my server: and here you can see the result of the second time request: As you can see there is a big change in the second load of the same page. Here is the page load time graph: My problem is that I don't really know anything about Red Had Linux server, and also I don't know where can I start. Can somebody to help me ? I like to find out the solution for the long time "wait" in connection. I know that my question is very minimal, but you can always ask me to give you information about the server.

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  • Nexenta/OpenSolaris filer kernel panic/crash

    - by ewwhite
    I've an x4540 Sun storage server running NexentaStor Enterprise. It's serving NFS over 10GbE CX4 for several VMWare vSphere hosts. There are 30 virtual machines running. For the past few weeks, I've had random crashes spaced 10-14 days apart. This system used to open OpenSolaris and was stable in that arrangement. The crashes trigger the automated system recovery feature on the hardware, forcing a hard system reset. Here's the output from mdb debugger: panic[cpu5]/thread=ffffff003fefbc60: Deadlock: cycle in blocking chain ffffff003fefb570 genunix:turnstile_block+795 () ffffff003fefb5d0 unix:mutex_vector_enter+261 () ffffff003fefb630 zfs:dbuf_find+5d () ffffff003fefb6c0 zfs:dbuf_hold_impl+59 () ffffff003fefb700 zfs:dbuf_hold+2e () ffffff003fefb780 zfs:dmu_buf_hold+8e () ffffff003fefb820 zfs:zap_lockdir+6d () ffffff003fefb8b0 zfs:zap_update+5b () ffffff003fefb930 zfs:zap_increment+9b () ffffff003fefb9b0 zfs:zap_increment_int+68 () ffffff003fefba10 zfs:do_userquota_update+8a () ffffff003fefba70 zfs:dmu_objset_do_userquota_updates+de () ffffff003fefbaf0 zfs:dsl_pool_sync+112 () ffffff003fefbba0 zfs:spa_sync+37b () ffffff003fefbc40 zfs:txg_sync_thread+247 () ffffff003fefbc50 unix:thread_start+8 () Any ideas what this means?

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  • Diagnose Issues with USB External Hard Drive

    - by Chris Lieb
    I have a 1TB SATA hard drive in a third-party USB enclosure hooked up to my computer via USB. The drive has become increasingly unreliable, randomly unmounting and remounting in Windows, making strange noises on occasion, and every once in a while making lots of noise and then unmounting, only fixable by powering down the enclosure, waiting a while, then powering it back up again. I am unsure if the hard drive or the enclosure is to blame. The random unmount/remount could be the enclosure, but the strange sounds are likely related to the hard drive. Given this uncertainty, I want to figure out which of the two items needs to be replaced. However, I do not know of a way to test each item separately since I do not have an extra SATA-to-USB enclosure to test the hard drive with or an extra SATA hard drive to test the enclosure with. Does anyone know how to figure out what's to blame so that I don't have to replace both unless it is absolutely necessary.

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