RAID question

[btaber]

I have software raid on 4 SCSI drives, and I was wondering if it is possible for the mirrors to rebuild automatically in case of power failure instead of me having to go use raidhotadd?

 

[zeland]

What is your RAID config like, 2xRAID-1/1xRAID-5/1xRAID5+Hotspare? RAIDs don't handle power failure, only disk failures. fsck should automatically sortout your dirty filesystems after a power failure.

Why do you need to run raidhotadd after every power failure?


--== Anything can go wrong. It's just a matter of how far wrong it will go till people think its right. ==--

 

[btaber]

Only a RAID 1 setup, but whenever the server shutdowns inproperly for whatever reason, if I look at mdstat it shows one "U" instead of 2, if I do raidhotadd it does a rebuild, but I dread the day I forget to do that...

 

[TrojanWarBlade]

btaber,
Why don't you write a script that runs on boot to check and see if mdstat returns one or two "U"s? Then it could re-add it for you if you have one missing!
This is the beauty of Unix and Linux. If you don't have a tool for a job, you have the tools to make one.


Trojan.

 

[btaber]

Yea, I was gonna do that... just wanted to make sure there wasn't an easier way




Thanks