[NCLUG] sw raid, recovery after install

[Kevin Fenzi]

On Wed, 02 Jan 2013 14:35:56 -0700
Matt Rosing <rosing at peakfive.com> wrote:

> Hi,
> 
> I added a raid 5 to my computer with 3 identical drives. I mounted
> it. I moved files to it. It looks like it's working. Then I looked at 
> /proc/mdstat and it says it's recovering:
> 
> -------------
> root at phoenix:/var/log# cat /proc/mdstat
> Personalities : [raid6] [raid5] [raid4]
> md0 : active raid5 sdb[0] sdd[3] sdc[1]
>        2930274304 blocks super 1.2 level 5, 512k chunk, algorithm 2 
> [3/2] [UU_]
>        [========>............]  recovery = 40.6%
> (595347620/1465137152) finish=235.8min speed=61467K/sec
> 
> unused devices: <none>
> -----------
> 
> Is it normal to be recovering a disk right after the raid is created?
> It could very well be that I set it up incorrectly.

Depending on how you set it up, yeah. 

I know Fedora/RHEL installers at least force a rebuild on reboot after
the initial install. This is to make sure all the disks are fully
synced and have no issues. 

You should be able to check 'dmesg' and see if a drive dropped out or
something. 

kevin
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