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06-27-2017 04:00 AM
06-27-2017 04:00 AM
Swapped disk came back as Alternate Link
Hi experts,
I have an issue with an old 9000/800. All disks are local SCSI. We hot swapped a failed disk ( c6t10 ), but it has come back into the config as an alternate link, which it isn't:
Before swap:
--- Physical volumes ---
PV Name /dev/dsk/c5t10d0
PV Status available
Total PE 8681
Free PE 274
Autoswitch On
PV Name /dev/dsk/c6t0d0
PV Status available
Total PE 8681
Free PE 0
Autoswitch On
PV Name /dev/dsk/c6t10d0
PV Status unavailable
Total PE 8681
Free PE 274
Autoswitch On
PV Name /dev/dsk/c5t0d0
PV Status available
Total PE 8681
Free PE 0
Autoswitch On
--- Physical volume groups ---
PVG Name pvg1
PV Name /dev/dsk/c5t0d0
PV Name /dev/dsk/c5t10d0
PVG Name pvg2
PV Name /dev/dsk/c6t0d0
PV Name /dev/dsk/c6t10d0
After disk swap:
--- Physical volumes ---
PV Name /dev/dsk/c5t10d0
PV Name /dev/dsk/c6t10d0 Alternate Link
PV Status available
Total PE 8681
Free PE 274
Autoswitch On
PV Name /dev/dsk/c6t0d0
PV Status available
Total PE 8681
Free PE 0
Autoswitch On
PV Name /dev/dsk/c5t0d0
PV Status available
Total PE 8681
Free PE 0
Autoswitch On
--- Physical volume groups ---
PVG Name pvg1
PV Name /dev/dsk/c5t0d0
PV Name /dev/dsk/c5t10d0
PVG Name pvg2
PV Name /dev/dsk/c6t0d0
PV Name /dev/dsk/c6t10d0
I've vgreduced it from the VG, but it still shows up as part of the group in vgscan.
/dev/vg01
/dev/dsk/c5t0d0
/dev/dsk/c5t10d0
/dev/dsk/c6t0d0
/dev/dsk/c6t10d0
It was also removed from /etc/lvmpvg by the vgreduce.
PVG pvg1
/dev/dsk/c5t0d0
/dev/dsk/c5t10d0
PVG pvg2
/dev/dsk/c6t0d0
Adding it back as part of pvg2 gives this error:
# vgextend -g pvg2 /dev/vg01 /dev/dsk/c6t10d0
Volume group "/dev/vg01" has been successfully extended.
Physical volume group "pvg2" has been successfully extended.
vgcfgbackup: /etc/lvmtab is out of date with the running kernel:Kernel indicates 5 disks for "/dev/vg01"; /etc/lvmtab has 4 disks.
Cannot proceed with backup.
And the disk is added as an alternate link
--- Physical volumes ---
PV Name /dev/dsk/c5t10d0
PV Name /dev/dsk/c6t10d0 Alternate Link
PV Status available
Total PE 8681
Free PE 274
Autoswitch On
How do I correct this?
Many thanks.
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06-28-2017 03:28 PM
06-28-2017 03:28 PM
Re: Swapped disk came back as Alternate Link
You don't have 4 disks. One of them is dead:
PV Name /dev/dsk/c6t10d0 PV Status unavailable Total PE 8681 Free PE 274 Autoswitch On
Run ioscan -nfCdisk
and look for NO_HW
Bill Hassell, sysadmin