Re: doubt about resync - raid1

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Did you do that to all of the related arrays? what does
/sys/block/md1/md/sync_action show? Perhaps its just paused and you
can start it manually by echoing 'resync' into it.

On Thu, May 17, 2012 at 9:57 AM, Roberto Spadim <roberto@xxxxxxxxxxxxx> wrote:
> i did this and don't worked
> echo 1 > /sys/block/md1/md/sync_force_parallel
>
> at /proc/mdstat
> /dev/md1 appears as sync
> but stay at 0%
> and after /dev/md0 resync /dev/md1 start
>
> there's another way to force sync?
>
> 2012/5/17 Marcus Sorensen <shadowsor@xxxxxxxxx>
>>
>> see /sys/block/md[0,1,2]/md/sync_force_parallel
>>
>> On Thu, May 17, 2012 at 9:50 AM, Roberto Spadim <roberto@xxxxxxxxxxxxx> wrote:
>> > hi guys, i was running a resync in a non-normal hardware instalation
>> >
>> > it's a server with 4 disks, they are in a raid hardware controller (perci
>> > from dell)
>> > disk 1-2 are raid1 and linux know it about /dev/sda
>> > disk 3-4 are raid1 and linux know it about /dev/sdb
>> >
>> > well i add more 4 disks
>> > disk 5-6 raid1 with /dev/sdc
>> > disk 7-8 raid1 with /dev/sdd
>> >
>> > nice...
>> > well /dev/sda and /dev/sdb have same partitions (/dev/sda1, 2 3 4) and have
>> > some md devices in this partitions..
>> > /dev/md0 = /dev/sda1 /dev/sdb1
>> > /dev/md1 = /dev/sda2 /dev/sdb2
>> > /dev/md2 = /dev/sda3 /dev/sdb3
>> > all raid 1 too
>> >
>> > i create same partitions on /dev/sdc, /dev/sdd
>> > and add they to md raid1
>> > /dev/md0 = /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
>> > /dev/md1 = /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
>> > /dev/md2 = /dev/sda3 /dev/sdb3 /dev/sdc3 /dev/sdd3
>> >
>> >
>> > nice..
>> > mdadm start resync...
>> > the point is...
>> > /dev/sda1 start copies to /dev/sdc1 and /dev/sdd1, i checked this with
>> > iostat -d 1 -k, and server is idle, only mdadm and raid is running,
>> > /dev/sda1 have reads and /dev/sdc1 and /dev/sdd1 have writes
>> > nice..
>> >
>> > the problem is...
>> > /dev/sdc2 and /dev/sdd2 didn't start sync while /dev/md0 is running, since
>> > they share the same devices (/dev/md0 => /dev/sda1, /dev/md1 => /dev/sda2)
>> >
>> > could i force a sync in /dev/md1??
>> > since /dev/sda is a raid1 hardware, it can handle two disks without
>> > performace problems...
>> > it have 2 heads, in others words the mdadm disk balance isn't perfect here
>> > to this solution, but works... the problem is sync not running, if i could
>> > force it every things could be allright
>> >
>> > i must check kernel version, it's about 2.6.3x, 1 year old +-
>> >
>> > well that's it, any ideas?
>> >
>> >
>> > ***
>> > sorry if i send two emails, the email was configured to HTML/RICH TEXT text
>> >
>> >
>> > --
>> > Roberto Spadim
>> > Spadim Technology / SPAEmpresarial
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe linux-raid" in
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>
>
>
>
> --
> Roberto Spadim
> Spadim Technology / SPAEmpresarial
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