[sclug] RedHat Software Raid

Scott Rixon scott at green-flag.com
Wed Jan 26 19:35:44 UTC 2005


I have a RedHat 9 server kicking around with 2x60GB disk in a software 

I have been looking in more detail about the software raid as I haven't 
checked this box for a long time!

I have just run a 'cat /dev/mdstat' and get this report..

[root at greenflag root]# cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hda3[0]
      57930304 blocks [2/1] [U_]
md0 : active raid1 hda2[0]
      610368 blocks [2/1] [U_]
md1 : active raid1 hda1[0]
      104320 blocks [2/1] [U_]
unused devices: <none>

Looks to me like on of the disks.. /dev/hdb might have failed as it's 
not listed!

Any thoughts? Advice? Is there a way to check the second drive and then 
re-sync the mirror?



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