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08-07-2002 11:54 AM
08-07-2002 11:54 AM
I've executed the pvdisplay command at my disk c1t0d0 and got the message:
pvdisplay: Warning: couldn't query physical volume "/dev/dsk/c1t0d0":
The specified path does not correspond to physical volume attached to
this volume group
pvdisplay: Warning: couldn't query all of the physical volumes.
pvdisplay: Couldn't retrieve the names of the physical volumes
belonging to volume group "/dev/vg00".
pvdisplay: Cannot display physical volume "/dev/dsk/c1t0d0".
Is there a physical failure with this disk??
Is there another test that I can do to test the disk??
Thanks.
Solved! Go to Solution.
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08-07-2002 11:58 AM
08-07-2002 11:58 AM
Re: Disk Failure
Is the disk comes in:
# ioscan -fnC disk ?
Is the disk shows somethin here:
# diskinfo /dev/rdsk/c1t0d0
Did you check the disk with stm or dd:
# stm
# dd if=/dev/rdsk/c1t0d0 of=/dev/null bs=64kb
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08-07-2002 11:58 AM
08-07-2002 11:58 AM
Re: Disk Failure
Try this command
#diskinfo /dev/rdsk/c1t0d0
Note that you must use the raw disk "rdsk"
If this returns nothing OR O size OR O bytes/sector, then there is a definite problem with the disk.
HTH,
Jeff
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08-07-2002 12:00 PM
08-07-2002 12:00 PM
Re: Disk Failure
You could have inadvertently overwritten the LVM data structures on the disk. A good safe test would be to do this:
dd if=/dev/rdsk/c1t0d0 bs=256k of=/dev/null.
If that command completes sucessfully then the disk is ok and a vgcfgrestore, vgchange -a y, and a vgsync should get you back.
I'm betting however on a failed disk drive.
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08-07-2002 12:04 PM
08-07-2002 12:04 PM
Re: Disk Failure
# cstm
cstm> map
cstm> sel dev
cstm> exercise
cstm> exeractlog
cstm> exerfaillog
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08-07-2002 12:06 PM
08-07-2002 12:06 PM
Re: Disk Failure
I tried the command diskinfo /dev/rdsk/c1t0d0 and the response is:
SCSI describe of /dev/rdsk/c1t0d0:
vendor: IBM
product id: DMVS
type: direct access
size: 0 Kbytes
bytes per sector: 0
The STM recognize the disk but doesn't generate any information about that...
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08-07-2002 12:10 PM
08-07-2002 12:10 PM
Re: Disk Failure
It look like a failed disk, if the device name you are giving is right. Replace the disk and reconfigure it (vgcfgrestore).
gl,
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08-07-2002 12:26 PM
08-07-2002 12:26 PM
Re: Disk Failure
Before you replace the disk, I would suggest that if it's in a hot-swappable enclosure, you should reseat it. Just pull it out & plug it back in securely. Wouldn't be the 1st time a move has unseated a drive.
Rgds,
Jeff
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08-07-2002 12:38 PM
08-07-2002 12:38 PM
Re: Disk Failure
Looks like a failed disk to me. The disk is at c1t0d0. Try Diskinfo,
diskinfo -v /dev/rdsk/c1t0d0
If this works, then try to reactivate the root VG to which this seems to belong,
vgchange -a y /dev/vg00
then again do a pvdisplay,
pvidsplay -v /dev/dsk/c1t0d0
or go a vgdisplay,
vgdisplay -v /dev/vg00
See if the disk is shown as available in vgdisplay.
If none of these generate the desired output, replace the disk.
Hope this helps.
regds
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08-07-2002 10:40 PM
08-07-2002 10:40 PM
Re: Disk Failure
You say you started your server again after a building move.
I assume this server was up and running for a very long time before you decided to switch it off for the move to take place.
Harddisks sometimes fail to spin after being on for a very long time. I think that's what happened to you.
Try to remove the disk, shake it for a few seconds, then back on. Try to listen to it spinning. If it does not spin, you have to replace it. You have mirroring so no big deal.
HTH,
Vince
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08-08-2002 03:36 AM
08-08-2002 03:36 AM
Re: Disk Failure
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08-08-2002 04:57 AM
08-08-2002 04:57 AM
SolutionThe hot-swap action of harddisks is supported only on a handful of servers, and, before removing, you have to prepare the system LVM-wise. It's not like a RAID disk array where you can remove disks without anything.
Please tell us what is your server.
Vince
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08-08-2002 05:16 AM
08-08-2002 05:16 AM
Re: Disk Failure
Ok?
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08-08-2002 06:09 AM
08-08-2002 06:09 AM
Re: Disk Failure
If the disk is in a HASS box or Disk array which is hot swappable, then you can remove and install it back (or install new one) when the system is online. This will not create any problem if you are removing the right disk.
But if the disk is not hot-swappable, then you should shutdown the server to test your ideas.
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08-08-2002 10:00 PM
08-08-2002 10:00 PM
Re: Disk Failure
You can shutdown your server and do that yes, but if you have one of the newer servers, like the rp54xx or rp74xx, this is not needed. You can actually remove the disk online and replace it online. Before that, though, you have to prepare your system in such a way as not to recognise the disk. In your case, remove mirroring and remove the disk c1t0d0 from lvmtab.
HTH,
Vince