RAID 1 is working properly?

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Posted by bdwebservices, 06-02-2011, 05:15 AM
Hello All, Is my server is RAID 1 protected or RAID 1 is working properly? Here is report: [root@server1 ~]# cat /proc/mdstat Personalities : [raid0] [raid1] md0 : active raid1 sdb1[1] sda1[0] 20972736 blocks [2/2] [UU] md2 : active raid1 sdb3[1] sda3[0] 51199040 blocks [2/2] [UU] md1 : active raid0 sdb2[1] sda2[0] 1809127424 blocks 256k chunks unused devices: [root@server1 ~]# Thanks in advance.
Posted by HUGOBLUE, 06-02-2011, 07:05 AM
Yeah that looks right Set up mail alerts and watch for disk status e.g like this [U_] (fail) instead of [UU] (correct)
Posted by bdwebservices, 06-02-2011, 07:10 AM
Yeah that looks right Set up mail alerts and watch for disk status e.g like this Thanks! Can you please help me to how to do it?
Posted by skywin, 06-02-2011, 05:34 PM
Add to /etc/mdadm/mdadm.conf this line MAILADDR youremail@domain.com and restart the service with /etc/init.d/mdadm restart
Posted by wartungsfenster, 06-02-2011, 06:14 PM
Sorry to spoil the fun, but please watch out: Your largest disk partition is not a RAID1 but a RAID0. So your server is not properly protected, if either of the disks fails, you lose all data that sits on /dev/md1.
Posted by HUGOBLUE, 06-02-2011, 06:19 PM
Damn I missed that part. You right, its is RAID0 Never use RAID0 for important data.
Posted by bdwebservices, 06-03-2011, 11:46 PM
Is it ok now?
Posted by wartungsfenster, 06-04-2011, 06:28 AM
I think it's OK now. Perfect would be if the primary copy were on "sda". It is on "sdb". Nothing very dangerous but keep in mind. Have fun with your server