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тАО07-28-2010 03:51 AM
тАО07-28-2010 03:51 AM
Invisible replacement disk
Volume group vg01 became too small so I bought replacement disks: 2 x 300 GB, 10 KRPM. I removed the existing volume group and deleted the corresponding RAID-1 set. After that I physically replaced the disks.
Since the new disks got new hardware paths I have used the "replace target" option of the sasmgr command to "move" the disks to the original device files. After that I removed the device files that were no longer applicable.
When I tried to build a new RAID-1 set on the new disk I got an error message (truth be told, I don't recall the exact message). First I thought I made a mistake in the command, but when I tried the same command on the original (146 GB) disks everything worked fine. Back to the new disks. After some try-and-error I noticed that one of the new disks (the one in bay 3) had disappeared from "sasmgr get_info" and reported "NO_HW" in ioscan. Replacing that disk with another disk (same characteristics: 300 GB 10 KRPM) did not resolve the problem.
When I swap the disks in bay 3 and bay 4 the problem remains the same: the disk in bay 3 does not work while the one in bay 4 does. Multiple rmsf / ioscan / insf commands didn't solve my problem.
Normally I would suspect a problem with bay 3. But in that case, why do the original 146 GB disks both work with no problems?
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тАО07-28-2010 04:27 AM
тАО07-28-2010 04:27 AM
Re: Invisible replacement disk
Are you using same make and model of disks
#insf -eC disk
to recreate device file system on disk
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тАО07-28-2010 04:44 AM
тАО07-28-2010 04:44 AM
Re: Invisible replacement disk
What I forgot to mention before: I did try a powerdown and cold reboot so the controller has been reset. It made no difference, however.
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тАО07-28-2010 05:08 AM
тАО07-28-2010 05:08 AM
Re: Invisible replacement disk
The only command that always show installed disks is the "sasmgr ... -q phy=all".
Does it show the disks?
Hope this helps!
Regards
Torsten.
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тАО07-28-2010 05:09 AM
тАО07-28-2010 05:09 AM
Re: Invisible replacement disk
In bay 2 74Gb disk
In bay 3 146Gb disk
In bay 4 146Gb disk
I think, scenerio like that
which disks are in vg01?
Have you checked inside connection of bay3?
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тАО07-28-2010 05:24 AM
тАО07-28-2010 05:24 AM
Re: Invisible replacement disk
@deeos: your thoughts are correct. vg01 was on the 146 GB disks (those in bay 3/4) which have been replaced by 300 GB disks. At the moment I don't have physical access to the server, but when I put back the 146 GB disks last time, everything worked just fine. So it seems to me the connector should be okay. However, as soon as I can I will doublecheck.
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тАО07-28-2010 05:28 AM
тАО07-28-2010 05:28 AM
Re: Invisible replacement disk
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тАО07-28-2010 05:29 AM
тАО07-28-2010 05:29 AM
Re: Invisible replacement disk
can you check?
#sasmgr get_info -D /dev/
#sasmgr get_info -D /dev/
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тАО07-28-2010 05:31 AM
тАО07-28-2010 05:31 AM
Re: Invisible replacement disk
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
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No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!
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тАО07-28-2010 05:40 AM
тАО07-28-2010 05:40 AM
Re: Invisible replacement disk
#sasmgr get_info -D /dev/
#sasmgr get_info -D /dev/
what does output of
#ioscan -funC disk
Have you done?
#rmsf -H
#insf -eC disk
Regards
Deeos