How to determine if a CentOS system is Raid-1?

Posted by Tedd Johnson on Server Fault See other posts from Server Fault or by Tedd Johnson
Published on 2010-02-08T20:14:04Z Indexed on 2011/01/17 9:54 UTC
Read the original article Hit count: 268

Filed under:

centos

|

raid1

I've tried searching for this answer, but haven't found anything elegant.

I have numerous servers in a colo that is in another state. I need to find a way to check that the servers have RAID-1 on them, so that I can determine if they were setup correctly by my colo.

df -h shows: Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 442G 1.5G 418G 1% / /dev/sda1 99M 19M 75M 20% /boot tmpfs 4.0G 0 4.0G 0% /dev/shm

however as CentOS uses LVM by default, this doesn't indicate if a RAID-1 is present.

it is supposed to be a software raid, so I'm pretty sure there should be a way to check.

Thanks

© Server Fault or respective owner

Related posts about centos

Problems with repositories on CentOS 3.9

as seen on Super User - Search for 'Super User'
Hello, I have CentOS 3.9 for i386. When I try to instal some thing with yum, i.e: yum install firefox or yum install firefox* or yum list firefox and so on, I get: +++++++++++++++++++ yum info firefox Gathering header information file(s) from server(s) Server: CentOS-3 - Addons Server: CentOS-3 -… >>> More
Problems with repositories on CentOS 3.9

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I have CentOS 3.9 for i386. When I try to instal some thing with yum, i.e: yum install firefox or yum install firefox* or yum list firefox and so on, I get: +++++++++++++++++++ yum info firefox Gathering header information file(s) from server(s) Server: CentOS-3 - Addons Server: CentOS-3 -… >>> More
centos yum problems

as seen on Server Fault - Search for 'Server Fault'
I am really new to using linux and have just formatted my centos 5.2 vps and am trying to install links by using the command yum install links. But the following error gets displayed: [root@inverses ~]# yum install links Loading "fastestmirror" plugin Loading mirror speeds from cached hostfile *… >>> More
Networking issues with Linux server (CentOS 5.3)

as seen on Server Fault - Search for 'Server Fault'
I have a Linux server hosting our bug tracking software (CentOS 5.2 Kernel 2.6.18-128.4.1.el5) that I have having some strange network problems with. The machine is configured with two NICS, one for the public interface and the other for our server back end network. The problem is that after doing… >>> More
Networking issues with Linux server (CentOS 5.3)

as seen on Server Fault - Search for 'Server Fault'
I have a Linux server hosting our bug tracking software (CentOS 5.2 Kernel 2.6.18-128.4.1.el5) that I have having some strange network problems with. The machine is configured with two NICS, one for the public interface and the other for our server back end network. The problem is that after doing… >>> More

Related posts about raid1

high load average, high wait, dmesg raid error messages (debian nfs server)

as seen on Server Fault - Search for 'Server Fault'
Debian 6 on HP proliant (2 CPU) with raid (2*1.5T RAID1 + 2*2T RAID1 joined RAID0 to make 3.5T) running mainly nfs & imapd (plus samba for windows share & local www for previewing web pages); with local ubuntu desktop client mounting $HOME, laptops accessing imap & odd files (e.g. videos)… >>> More
RAID1 Broken Mirroring

as seen on Server Fault - Search for 'Server Fault'
I'm having a little server with Windows Small Business Server 2003. I'm using RAID1, via a HighPoint Rocket RAID 1640 RAID-card, using two harddrives. This week the server alarmed, and durig reboot I got the error-message Broken Mirroring (User Manual page 30). I had a few alternatives (see the manual)… >>> More
RAID1 Hard drives with Intel Controller

as seen on Server Fault - Search for 'Server Fault'
I have an older server with 2 35GB hard drives arranged as a RAID-1 drive. I have 3 open bays, I'd like to add 2 more hard drives to the open bays and have all 4 drives configured as a RAID-1 drive that Windows sees as 1 larger drive. Is this possible? If not, the new drives are 2x as big as… >>> More
Linux software raid fails to include one device for one RAID1 array

as seen on Server Fault - Search for 'Server Fault'
One of my four Linux software raid arrays drops one of its two devices when I reboot my system. The other three arrays work fine. I am running RAID1 on kernel version 2.6.32-5-amd64. Every time I reboot, /dev/md2 comes up with only one device. I can manually add the device by saying $ sudo mdadm /dev/md2… >>> More
Linux boot on a raid1 software raid ?

as seen on Server Fault - Search for 'Server Fault'
Hello I am trying to convert my single disk boot to a raid1 boot So far here is what i have: I sucessfully create the raid 1 as degraded with the new drive alone, I copied all the data on it I can mount that raid 1, see its files etc I already have a raid5 that is working on the same box (although… >>> More