Re: On MAC 10.4 RAID type mirror after Rebuilding 100% it wont get mounted automatically..
Re: On MAC 10.4 RAID type mirror after Rebuilding 100% it wont get mounted automatically..
- Subject: Re: On MAC 10.4 RAID type mirror after Rebuilding 100% it wont get mounted automatically..
- From: Rick Sulack <email@hidden>
- Date: Mon, 13 Mar 2006 10:52:34 -0800
On Mar 13, 2006, at 1:54 AM, Gaurav Kumar wrote:
hi all,
On MAC OSX 10.4 if i repair a damaged RAID using diskutil command as
diskutil repairMirror diskx disky.
Rebiulding starts properly and when it is 100% Complete. Diskutil
checkRAID shows status of RAID disk as Offline i.e not mounted.
After i have to execute diskutil mountDisk to make it mounted.
While on 10.3.3 after completion of diskutil repairMirror the
status of
disk is mounted. We don't have to expilicitly fire diskutil
mountDisk to
make it mounted again.
so,suggest me what should i do so that after rebuilding is complete,
disk gets automatically mounted on MAC 10.4.
In 10.3.2 (7E46) we added support for live mirror rebuilding. 10.4
also has support for live mirror rebuilding. However, most of the
RAID code was re-written for 10.4, it supports some new features like
RAID 10, 0+1, JBOD, ...
For both 10.3.2+ (7E46) and 10.4.x the need to first unmount the
mirrored volume is no longer necessary. Releases older than 10.3.2
had to rebuild mirrors unmounted so the code was most likely
remounting the volumes prior to 10.3.2 when the rebuild completed.
Since you are talking about 10.3.3, my best guess that this was a bug
outside of the RAID code that was fixed in 10.4, since a unmounted
volume should probably stay that way.
The easiest fix might be to not unmount the volume before rebuilding
it on 10.4. Unmounting a mirrored volume on 10.4 before rebuilding
is not a bad thing though. Live rebuilding was added mostly to allow
rebuilding boot volumes. Depending on much normal i/o activity
occurring on the volume during the rebuild, the rebuild could take
longer if it is mounted. So it is best to try to minimize the extra
i/o while rebuilding if you can.
-rick
__
rick sulack
darwin core os group
apple computer, inc
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