On Sat, 12 Aug 2006, Philippe Gramoull? wrote:


Hello,

On Fri, 11 Aug 2006 21:34:50 +0200
Adrian Ulrich <[EMAIL PROTECTED]> wrote:

 | > It seems that the kernel does not check the integrity of the data on 
mirrored raid,
 |
 | It does if you tell the kernel to do so:
 |
 | # echo check > /sys/block/md0/md/sync_action

I have just upgraded from an older kernel to be able to use such a 
functionality but :

boogie:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5] [raid4] [raid6] [multipath]
md0 : active raid0 sde1[0] sdk1[6] sdj1[5] sdi1[4] sdh1[3] sdg1[2] sdf1[1]
     501773440 blocks 64k chunks

unused devices: <none>

boogie:~# echo check > /sys/block/md0/md/sync_action
-bash: /sys/block/md0/md/sync_action: Permission denied

boogie:~# mount | grep sys
sysfs on /sys type sysfs (rw)

What am i missing here ?

Thanks,

Philippe


There is no parity with raid0, so there should be nothing to check?

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