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тАО12-28-2005 10:53 PM
тАО12-28-2005 10:53 PM
One of our disk inside vg00 has failed, the volume group is not mirrored, what is the best strategy for replacing the disk?
Currently any LVM commands on vg00 hangs the system...
Solved! Go to Solution.
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тАО12-28-2005 10:57 PM
тАО12-28-2005 10:57 PM
Solutionhttp://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf
Pete
Pete
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тАО12-28-2005 10:57 PM
тАО12-28-2005 10:57 PM
Re: Vg00 Disk Failed
replace the drive and restore your ignite backup.
HTH!
Hope this helps!
Regards
Torsten.
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тАО12-28-2005 11:06 PM
тАО12-28-2005 11:06 PM
Re: Vg00 Disk Failed
I hope you have an ignite tape.
Replace the disk an restore the OS from the ignite tape.
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тАО12-28-2005 11:06 PM
тАО12-28-2005 11:06 PM
Re: Vg00 Disk Failed
depends on what was on the faulty drive !
If it was critical system files the system would have probably chrashed by now. The best way forward would be:
1. Identify corrupted disk
2. Confirm corruption, might only be lvmtab
Then depending on whether you have a backup:
3. Replace disk and restore
or
3. You may have to rebuild.
Lesson: Always take backups or pay for mirrors.
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тАО12-28-2005 11:53 PM
тАО12-28-2005 11:53 PM
Re: Vg00 Disk Failed
Hi,
1.identifi the failed disk.
2.replace it with a good one.
3.do a #vfcfgrestore on the disk.
4.recreate the filesystem which was present in the failed disk
5.restore the backup
With Regards,
Siva.
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тАО12-29-2005 01:11 PM
тАО12-29-2005 01:11 PM
Re: Vg00 Disk Failed
You have only one way to recover from backup tape.
Replace the bad one.
Boot from backup tape and recover!
I think mirror is very usefull for this case!VG00 should be mirror for safe.
Goodluck!
Hoang Chi Cong
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тАО01-11-2006 06:28 PM
тАО01-11-2006 06:28 PM
Re: Vg00 Disk Failed
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тАО01-11-2006 06:42 PM
тАО01-11-2006 06:42 PM
Re: Vg00 Disk Failed
As you mentioned one of the vg00 disk failed, you should find out what are the LVOLs spread onto this disk. If these invlolves some of essentional file systems then it would be requiring a ignite recovery. But if there is some unused LVOLs across this disk then just replacing and restoring only those file systems shall be enough and complete recovery shall not be required.
Find out the disk usage by
#pvdisplay -v /dev/dsk/cxtydz
(Where /dev/dsk/cxtydz is the disk device file)
Also post output of
#bdf
&
#vgdisplay -v /dev/vg00
HTH,
Devender
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тАО01-11-2006 06:46 PM
тАО01-11-2006 06:46 PM
Re: Vg00 Disk Failed
Apart from this it also depends on what type of failure it is. Sometimes disk do not fail completely and start getting slow or giving random I/O error if this is the case you can still copy data and avoid ignite restoration.
In my opinion the ignite recovery shall be the last option as by doing so you will require to restore all LVOLs in vg00.
HTH,
Devender