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Failed disk in LVM

Nyck_1
Super Advisor

Failed disk in LVM

It appears that I have a failed disk in one of my ancient J5600's:-

vgdisplay -v
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t5d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 11
Open LV 11
Max PV 16
Cur PV 4
Act PV 3
Max PE per PV 4350
VGDA 6
PE Size (Mbytes) 4
Total PE 13020
Alloc PE 9943
Free PE 3077
Total PVG 3
Total Spare PVs 0
Total Spare PVs in use 0

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t5d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/vg00/lvol1
LV Status available/stale
LV Size (Mbytes) 300
Current LE 75
Allocated PE 150
Used PV 1

The system is still working so I'm asuming its mirrored. So when I get the disk replaced how do I proceed with getting the system all back to normal?

How can I actually tell that this is mirrored?
13 REPLIES
Kapil Jha
Honored Contributor

Re: Failed disk in LVM

lvdisplay lv_name
it would show its its mirroed or not.

to replace check the PDF
when_good_disk_go bad.

BR,
kapil+
I am in this small bowl, I wane see the real world......
HCL Ash
Frequent Advisor

Re: Failed disk in LVM

If the disk is hotswap disk and lvol is mirrored

Do the follwoingg things

Replace th bad disk

#vgcfgrestore -n Vg01 /dev/rdsk/c3t5d0
#lvsync dev/vg00/lvol1

----------------------------
IF lvol is not mirror

1) take backup of system

2) #vgcfgrestore -n Vg01 /dev/rdsk/c3t5d0

3) crete newfile system on lvol mount it back and restore the data.
Johnson Punniyalingam
Honored Contributor

Re: Failed disk in LVM

Once of your disk failling from"vg00"

>>replaced how do I proceed with getting the system all back to normal?<<

You can also refer to HP offical document

"Good disk Gone Bad".

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad_WP.pdf

>>How can I actually tell that this is mirrored?<<

lvdisplay -v /dev/vg00/lvol1 |more -> look for "Mirror Copies =1

Thanks,
Johnson
Problems are common to all, but attitude makes the difference
Nyck_1
Super Advisor

Re: Failed disk in LVM

Its does appear to be mirrored:-

lvdisplay -v /dev/vg00/lvol1
lvdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t5d0":
The specified path does not correspond to physical volume attached to
this volume group
lvdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/vg00/lvol1
VG Name /dev/vg00
LV Permission read/write
LV Status available/stale
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 300
Current LE 75
Allocated PE 150
Stripes 0
Stripe Size (Kbytes) 0
Bad block off
Allocation strict/contiguous
IO Timeout (Seconds) default

So next step is to log a call and get a new disk shipped:-)
Johnson Punniyalingam
Honored Contributor

Re: Failed disk in LVM

>>So next step is to log a call and get a new disk shipped:-)<<<<

Yes . Please
Problems are common to all, but attitude makes the difference
Torsten.
Acclaimed Contributor

Re: Failed disk in LVM

You have 4 disks in vg00.

Take care when replacing the drive - 2 are bootable, 2 are just for data!

Some information that could help:

# pvdisplay -v ... (for remaining disks)

# setboot (to get the configured boot disks)

Hope this helps!
Regards
Torsten.

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Sp4admin
Trusted Contributor

Re: Failed disk in LVM

Looks like you have gotten the answer. I used the same document that Johnson recommended and to this day still use it.

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad_WP.pdf

sp,
Prasanth Thomas
Valued Contributor

Re: Failed disk in LVM

HI,

Please update the below queries.

whats the version of the OS.
#strings /etc/lvmtab
#pvdisplay /dev/dsk/c3t5d0
#diskinfo /dev/rdsk/c3t5d0
#lvlnboot -v
#dmesg |grep -i "c3t5d0"
#ls -ltr /dev/dsk/*
#ls -ltr /etc/lvmconf/
#vgscan

Regards,
Prasanth Thomas.
Nyck_1
Super Advisor

Re: Failed disk in LVM

The version of OS is 11.11 & the details of your questions are below:-

strings /etc/lvmtab
/dev/vg00
/dev/dsk/c3t6d0
/dev/dsk/c3t5d0
/dev/dsk/c3t3d0
/dev/dsk/c3t4d0
/dev/vg_san
/dev/dsk/c7t0d1
/dev/dsk/c8t0d0
/dev/dsk/c7t0d2
[lonse5] usr #
[lonse5] usr # pvdisplay /dev/dsk/c3t5d0
pvdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t5d0":
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/c3t5d0".
[lonse5] usr #
[lonse5] usr # diskinfo /dev/rdsk/c3t5d0
io_search failed: No match found.
[lonse5] usr # lvlnboot -v
lvlnboot: Couldn't query physical volume "/dev/dsk/c3t5d0":
The specified path does not correspond to physical volume attached to
this volume group
[lonse5] usr # dmesg |grep -i 'c3t5d0'
[lonse5] usr #
[lonse5] usr # ls -ltr /dev/dsk/*
brw-r----- 1 bin sys 31 0x000000 Feb 24 2005 /dev/dsk/c0t0d0
brw-r----- 1 bin sys 31 0x033000 Feb 24 2005 /dev/dsk/c3t3d0
brw-r----- 1 bin sys 31 0x034000 Feb 24 2005 /dev/dsk/c3t4d0
brw-r----- 1 bin sys 31 0x035000 Feb 24 2005 /dev/dsk/c3t5d0
brw-r----- 1 bin sys 31 0x036000 Feb 24 2005 /dev/dsk/c3t6d0
brw-r----- 1 bin sys 31 0x063000 Mar 30 2005 /dev/dsk/c6t3d0
brw-r----- 1 bin sys 31 0x053000 Mar 30 2005 /dev/dsk/c5t3d0
brw-r----- 1 bin sys 31 0x070000 Mar 30 2005 /dev/dsk/c7t0d0
brw-r----- 1 bin sys 31 0x070100 Mar 30 2005 /dev/dsk/c7t0d1
brw-r----- 1 bin sys 31 0x080000 Mar 30 2005 /dev/dsk/c8t0d0
brw-r----- 1 bin sys 31 0x080100 Mar 30 2005 /dev/dsk/c8t0d1
brw-r----- 1 bin sys 31 0x070200 Apr 7 2006 /dev/dsk/c7t0d2
brw-r----- 1 bin sys 31 0x080200 Apr 7 2006 /dev/dsk/c8t0d2
[lonse5] usr #
[lonse5] usr # ls -ltr /etc/lvmconf/
total 9248
---------- 1 root sys 0 Feb 24 2005 lvm_lock
-r-------- 1 root sys 297984 May 9 2005 vg01.conf.old
-r-------- 1 root sys 296960 May 9 2005 vg01.conf
-r-------- 1 root sys 332800 Jun 1 2005 vg00.conf.old
-r-------- 1 root sys 332800 Jun 1 2005 vg00.conf
-rw------- 1 root sys 1724416 Apr 7 2006 vg_san.conf.old
-r-------- 1 root sys 1724416 Apr 7 2006 vg_san.conf
[lonse5] usr #
[lonse5] usr # vgscan
vgscan: Warning: couldn't query physical volume "/dev/dsk/c3t5d0":
The specified path does not correspond to physical volume attached to
this volume group
vgscan: Warning: couldn't query all of the physical volumes.
vgscan: The physical volume "/dev/dsk/c3t3d0" is already recorded in the "/etc/lvmtab" file.
vgscan: The physical volume "/dev/dsk/c3t4d0" is already recorded in the "/etc/lvmtab" file.
vgscan: The physical volume "/dev/dsk/c3t6d0" is already recorded in the "/etc/lvmtab" file.
vgscan: The physical volume "/dev/dsk/c7t0d1" is already recorded in the "/etc/lvmtab" file.
vgscan: The physical volume "/dev/dsk/c7t0d2" is already recorded in the "/etc/lvmtab" file.
vgscan: The physical volume "/dev/dsk/c8t0d0" is already recorded in the "/etc/lvmtab" file.
Couldn't stat physical volume "/dev/dsk/c0t0d0":
Invalid argument
Prasanth Thomas
Valued Contributor

Re: Failed disk in LVM

# ioscan -fnC disk
AVV
Super Advisor

Re: Failed disk in LVM

Hi,

Just check what are the LVs are there in vg00 and do an lvdisplay on all the LVs inside. See, the number of mirror copies in that, if it is 1 or more, you are safe to do a replacement.
Nyck_1
Super Advisor

Re: Failed disk in LVM

ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
==========================================================================
disk 0 10/0/14/0.0.0 sdisk CLAIMED DEVICE MITSUMI CD-ROM FX4820T!B
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 10/0/15/1.3.0 sdisk CLAIMED DEVICE QUANTUM ATLAS10KII-18LVD
/dev/dsk/c3t3d0 /dev/rdsk/c3t3d0
disk 2 10/0/15/1.4.0 sdisk CLAIMED DEVICE SEAGATE ST318203LC
/dev/dsk/c3t4d0 /dev/rdsk/c3t4d0
disk 4 10/0/15/1.6.0 sdisk CLAIMED DEVICE QUANTUM ATLAS10KII-18LVD
/dev/dsk/c3t6d0 /dev/rdsk/c3t6d0
disk 7 10/4/4/0.97.4.19.0.0.0 sdisk CLAIMED DEVICE DGC CX300WDR5
/dev/dsk/c7t0d0 /dev/rdsk/c7t0d0
disk 8 10/4/4/0.97.4.19.0.0.1 sdisk CLAIMED DEVICE DGC CX300WDR5
/dev/dsk/c7t0d1 /dev/rdsk/c7t0d1
disk 6 10/4/4/0.97.4.19.0.0.2 sdisk CLAIMED DEVICE DGC CX300WDR5
/dev/dsk/c7t0d2 /dev/rdsk/c7t0d2
disk 5 10/4/4/0.97.5.19.0.0.0 sdisk CLAIMED DEVICE DGC CX300WDR5
/dev/dsk/c8t0d0 /dev/rdsk/c8t0d0
disk 9 10/4/4/0.97.5.19.0.0.1 sdisk CLAIMED DEVICE DGC CX300WDR5
/dev/dsk/c8t0d1 /dev/rdsk/c8t0d1
disk 10 10/4/4/0.97.5.19.0.0.2 sdisk CLAIMED DEVICE DGC CX300WDR5
/dev/dsk/c8t0d2 /dev/rdsk/c8t0d2
Prasanth Thomas
Valued Contributor

Re: Failed disk in LVM

The "/dev/dsk/c3t5d0" disk not showing in th ioscan o/p that means there is some issue on this disk.(i can see three local disks and three storage disks.) Please open a ticket with vendor to replace the Hard Disk "/dev/dsk/c3t5d0 soon. Check whether you can see any led is in red colour.

Please check which and all lvs are using this PV by running
#lvdisplay -v lvname |more

Please share the o/p of below command to check the disk size.
# pvdisplay /dev/dsk/c3t6d0
# pvdisplay /dev/dsk/c3t3d0
# pvdisplay /dev/dsk/c3t4d0

If you need the disk replacement procedure please let me know.

Regards,
Prasanth Thomas