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SubjectRe[2]: RAID sync

Hi, Jakob and all,

Tuesday, October 02, 2001, 9:19:49 AM, you wrote:

JØ> On Mon, Oct 01, 2001 at 06:27:53PM +0400, Oleg A. Yurlov wrote:
>>
>> Privet :-)
>>
>> Kernel 2.4.6.SuSE-4GB-SMP, 2 CPU, 2Gb RAM, 4 HDD SCSI, M/B Intel L440GX.
>> Messages from dmesg:
>>
JØ> ...
>> md: sdc2 [events: 0000001e](write) sdc2's sb offset: 15815872
>> md: considering sdb2 ...
>> md: adding sdb2 ...
>> md: adding sda2 ...
>> md: created md0
>> md: bind<sda2,1>
>> md: bind<sdb2,2>
>> md: running: <sdb2><sda2>
>> md: now!
>> md: sdb2's event counter: 0000001c
>> md: sda2's event counter: 0000001d
>> md: superblock update time inconsistency -- using the most recent one
>> md: freshest: sda2
>> md0: max total readahead window set to 508k
>> md0: 1 data-disks, max readahead per data-disk: 508k
>> raid1: device sdb2 operational as mirror 1
>> raid1: device sda2 operational as mirror 0
>> raid1: raid set md0 active with 2 out of 2 mirrors
>> md: updating md0 RAID superblock on device
>> md: sdb2 [events: 0000001e](write) sdb2's sb offset: 15815872
>> md: sda2 [events: 0000001e](write) sda2's sb offset: 15815872
>> md: ... autorun DONE.
>>
>> Why RAID do not start synchronization ? It is normal ?

JØ> Doesn't it ?

Really.

JØ> Try "cat /proc/mdstat"

JØ> Synchronization is a background operation - your array is functional
JØ> immediately.

No, synchronization not started, /proc/mdstat say that RAID is Ok
([UU]). /proc/mdstat checked immediately after booting.

JØ> (this behaviour was changed from the really really old RAID code in unpatched
JØ> 2.2 to standard 2.4)

Neil already has given some explanations...

--
Oleg A. Yurlov aka Kris Werewolf, SysAdmin OAY100-RIPN
mailto:kris@spylog.com +7 095 332-03-88

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