Re: HP-UX 11.23 failed internal mirrored vg00 disk (2276 Views)
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Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 1 of 24 (2,431 Views)
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HP-UX 11.23 failed internal mirrored vg00 disk

Hi.

 

I've got an old HP-UX 11.23 server. It has 2 internal disks for vg00, mirrored (except one filesystem).

 

One of the disks has failed, and we need to replace it.

 

Before replacing the failed disk with the new one, I'd like to check the steps we'll need to do.

 

I've seen this post (http://h30499.www3.hp.com/t5/LVM-and-VxVM/Replace-Mirror-Disk-Boot-HPUX-11-23/td-p/4951953#.Uv4Z2OKD...) and the "When Good Disks Go Bad.pdf".

 

In the post the steps are:

vgcfgrestore

mkboot

mkboot -a

vgchange

lvlnboot

vgsync

 

In the pdf, there are a lot more steps, first try to reduce the mirrors, with lvreduce, then removing the failed disk from the vg with vgreduce, disable LVM access, etc...

 

Before taking any action, I'd like to check the steps we should do.

 

I've attached some information about the failed disk.

 

Thanks

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 2 of 24 (2,416 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk



Disabling failed disk
#pvchange -a N /dev/dsk/c1t1d0s2   ---> in your case, it's not present

Physically Replace the disk, and Verify the new disk 


#ioscan -fC disk

Cleaning old EFI configuration
#idisk -Rw /dev/rdsk/c1t1d0

Using VI Create disk partitioning description file
#vi /tmp/partitionfile
3
EFI 500MB
HPUX 100%
HPSP 400MB

Partitioning of new disk
#idisk -f /tmp/partitionfile -w /dev/rdsk/c1t1d0

Partitioning verification
#idisk /dev/rdsk/c1t1d0

Creating DSF
#insf -e -H $(lssf /dev/dsk/c1t1d0 | awk ' { print $(NF-1) } ')

Initializing FAT File system for the EFI partition
#efi_fsinit -d /dev/rdsk/c1t1d0s1

Creating LVM bootable disk
#pvcreate -Bf /dev/rdsk/c1t1d0s2

Copy software boot (with EFI)
#mkboot -e -l /dev/rdsk/c1t1d0

Modification of AUTO file for the boot quorum
#mkboot -a boot vmunix -lq /dev/rdsk/c1t1d0

Verifying« AUTO » file
# efi_cp -d /dev/rdsk/c1t1d0s1 -u /EFI/HPUX/AUTO /tmp/AUTO
#cat /tmp/AUTO

Checking the contents of the LIF directory
#efi_ls -d /dev/rdsk/c1t1d0s1

Restoring LVM configuration on the new disk
#vgcfgrestore -n vg00 /dev/rdsk/c1t1d0s2

Enabling disk:
#pvchange -a y /dev/dsk/c1t1d0s2 
#vgchange -a y vg00
#lvlnboot -R /dev/vg00

Resynchronization LV only if vchange does not start automatically the resync
# vgsync /dev/vg00

Check sync,once it is in the state available/syncd it has finished the sync
#vgdisplay -v vg00 | grep -E '(LV Name|LV Status)'
check how many stale PE's are left on the lvol change LVOLNAME with name of lvol
#lvdisplay -v LVOLNAME | grep stale | wc -l

Windows?, no thanks
Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 3 of 24 (2,395 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Thanks a lot.

 

I'll try it and I will post the results.

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 4 of 24 (2,393 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

I will follow these steps this afternoon, but I've got one last question.

 

pvdisplay and ioscan does not show info about c1t1d0s2, but the device files are still present in /dev/dsk

 

#ls -l /dev/dsk/ | grep c1t1d0
brw-r-----   1 bin        sys         31 0x011000 Jun 11  2007 c1t1d0
brw-r-----   1 bin        sys         31 0x011001 Jun 11  2007 c1t1d0s1
brw-r-----   1 bin        sys         31 0x011002 Jun 11  2007 c1t1d0s2
brw-r-----   1 bin        sys         31 0x011003 Jun 11  2007 c1t1d0s3

 

Should I delete these files before replacing the disk?

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 5 of 24 (2,376 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Well, yesterday I tried to follow these steps, but I had some minor problems, and a big problem.

 

First of all, the new disk is not c1t1d0, instead it is c1t2d0.

 

#ioscan -funC disk

...

disk        87  0/4/1/0.0.0.2.0      sdisk          CLAIMED     DEVICE       HP      DG0146FAMWL
                               /dev/dsk/c1t2d0     /dev/dsk/c1t2d0s2   /dev/rdsk/c1t2d0    /dev/rdsk/c1t2d0s2
                               /dev/dsk/c1t2d0s1   /dev/dsk/c1t2d0s3   /dev/rdsk/c1t2d0s1  /dev/rdsk/c1t2d0s3

...

 

In a second place, the second mkboot command failed:

 

#mkboot -a boot vmunix -lq /dev/rdsk/c1t2d0 ==> Failed

 

Taking a look at the other post and at the "When good disks...pdf" I finally executed this other command, that ended OK:

 

#mkboot -a "hpux -lq (;0)/vmunix" /dev/rdsk/c1t2d0

 

Everything went well until the vgcfgrestore command.

 

Since c1t2d0s2 was not in vg00 before, I cannot restore the vg00 conf.

 

So now I suppose I've got two options:

 - try to reduce the vg00, to remove the old c1t1d0s2 disk. Then extend vg00 with the new c1t2d0s2, and recreate the mirrors.

 - try to remove and re-add the new disk, and see if it can get the original c1t1d0 name, instead of c1t2d0. Then continue with the procedure.

 

I don't like the first option, because right now vg00 is not OK, and I don't know how it will behave.

 

I've attached some information about vg00.


As you can see, all the OS lvols are mirrored and stale (except lvFAULT, that was stripped), so I think I need to remove the failed copy of the mirrors.

 

What scares me is that lvlnboot -v only show an error, it doesn't show any more information. It should show some information about the remaining disk.

#lvlnboot -v
lvlnboot: Couldn't query physical volume "/dev/dsk/c1t1d0s2":
The specified path does not correspond to physical volume attached to
this volume group

 

Yesterday I tried to move /etc/lvmtab and recreate it with vgscan, but this deleted vg00 from the system:

 

#vgscan -v

Creating "/etc/lvmtab".

vgscan: Couldn't access the list of physical volumes for volume group "/dev/vg00".

vgscan: Couldn't access the list of physical volumes for volume group "/dev/SAPVG".

[The same error for all my VGs] 

 

Physical Volume "/dev/dsk/c0t0d0" contains no LVM information

Physical Volume "/dev/dsk/c1t2d0s2" is not part of a Volume Group

 

vgscan:  has no correspoding valid raw device file under /dev/rdsk.

Verification of unique LVM disk id on each disk in the volume group /dev/vg00 failed.

 

/dev/SAPVG

/dev/dsk/c10t0d1

/dev/dsk/c10t0d5

[...]

 

#vgdisplay -v /dev/vg00

vgdisplay: Volume group "/dev/vg00" does not exist in the "/etc/lvmtab" file.
vgdisplay: Cannot display volume group "/dev/vg00".

 

I recovered the original /etc/lvmtab, but now I'm not sure what should I do.

 

I now that this system is not OK, and that I should solve all the errors, but right now I need to recover a mirrored vg00, and then I will focus on the other problems.

 

At this point I'd like to remove the new c1t2d0 disk, and try to re-add it with the old c1t1d0 name, to see if I'm able to recover vg00.

What should I do to do this?

 

Thanks.

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 6 of 24 (2,368 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Hi,

 

If the disk was inserted in the same slot it doesn't have to change de scsi id, did you replace the disk in the same slot?.

 

What model is your server?.

 

#model

#uname -a

 

Can you also run:

 

#lvlnboot -v /dev/vg00

 

We can remove all the stale info in vg00 from the failed disk, and add the new c1t2d0 to the mirror, but first you need to have the boot LABLE working for the "good" disk c1t0d0s2.

 

 

Windows?, no thanks
Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 7 of 24 (2,361 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

I've been told (the server is hundreds km away from my office) that the disk was inserted in the same slot. Removed the old failed disk, and inserted the new one in the same slot.

 

I suspect that when I did ioscan, the /dev/(r)dsk/c1t1d0* device files still existed in the server, so this may have forced the new disk to get a different name. Is this possible?

 

#model
ia64 hp server rx6600

#uname -a
HP-UX node01 B.11.23 U ia64 2654504742 unlimited-user license

#lvlnboot -v /dev/vg00
lvlnboot: Couldn't query physical volume "/dev/dsk/c1t1d0s2":
The specified path does not correspond to physical volume attached to
this volume group

 

Thanks a lot.

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 8 of 24 (2,358 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

[ Edited ]

Hi,

 

No the problem is not with not removing the device files, that step is not needed.

 

The problem is that rx6600 has a sas controller and you need some additional steps to get the old device ID in use.

 

Here you have a guide that has the steps to follow, the online disk replace is around page 66:

 

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c02017117/c02017117.pdf

 

 

 

 

Windows?, no thanks
Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 9 of 24 (2,353 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Thanks a lot.

 

So now I suppose I need to do a replace target:

 

# sasmgr replace_tgt -D /dev/sasd0 -q old_tgt=/dev/dsk/c1t1d0 -q new_tgt_hwpath=0/4/1/0.0.0.2.0

 

 

But first of all, I think I should delete all the new conf I've already done on the new c1t2d0(s*).

How can erase and delete the conf that has been done?

 

Thanks.

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 10 of 24 (2,345 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

OK, already donde with idisk -R, but ioscan still showed the c1t2d0sX devices.

Deleted them with rmsf, and now it seems ok.

 

I will go on with sasmgr replace_tgt, and I will update this.

 


 

Thanks.

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 11 of 24 (2,339 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

I don't know what i am missing, but it's not working.

 

#sasmgr replace_tgt -D /dev/sasd0 -q old_dev=/dev/dsk/c1t1d0 -q new_tgt_hwpath=0/4/1/0.0.0.2.0

 

WARNING: This is a DESTRUCTIVE operation.

This might result in failure of current I/O requests.

Do you want to continue ?(y/n) [n]...

ERROR: Could not stat the file /dev/dsk/c1t1d0: No such file or directory

 

So, I should not have deleted the original DSFs /dev/(r)dsk/c1t1d0(sX), but I think I can recreate them.

 

#mknod /dev/dsk/c1t1d0 b 31 0x011000
#mknod /dev/rdsk/c1t1d0 c 188 0x011000

#chown bin:sys /dev/dsk/c1t1d0

#chown bin:sys /dev/rdsk/c1t1d0

#chmod 640 /dev/dsk/c1t1d0

#chmod 640 /dev/rdsk/c1t1d0

 

But sasmgr still fails, with a different error:

 

#sasmgr replace_tgt -D /dev/sasd0 -q old_dev=/dev/dsk/c1t1d0 -q new_tgt_hwpath=0/4/1/0.0.0.2.0

 

WARNING: This is a DESTRUCTIVE operation.

This might result in failure of current I/O requests.

Do you want to continue ?(y/n) [n]...

ERROR: Unable to replace target: No such device

 

By the way, I've seen in other posts that sasmgr is used with raw rdsk, instead of dsk, but it doesn't work neither.

 

Not sure about what I'm missing.

 

I'm using the correct /dev/sasd0:

#ioscan -fnkd sasd
Class        I  H/W Path  Driver S/W State   H/W Type     Description
====================================================================
escsi_ctlr   0  0/4/1/0   sasd CLAIMED     INTERFACE    HP  PCI/PCI-X SAS MPT Adapter
                         /dev/sasd0

 

Old disk (old_dev) was c1t1d0, and I've recreated the DSFs:

sapjr01#ll /dev/dsk/c1t1d0
brw-r-----   1 bin        sys         31 0x011000 Feb 18 15:08 /dev/dsk/c1t1d0
sapjr01#ll /dev/rdsk/c1t1d0
crw-r-----   1 bin        sys        188 0x011000 Feb 18 15:08 /dev/rdsk/c1t1d0

 

And the new path (new_tgt_hwpath) is 0/4/1/0.0.0.2.0:

#ioscan -funC disk

Class        I  H/W Path        Driver         S/W State   H/W Type     Description
====================================================================================
disk         0  0/0/2/1.0.16.0.0     sdisk          CLAIMED     DEVICE       TEAC    DV-28E-N
                               /dev/dsk/c0t0d0   /dev/rdsk/c0t0d0
disk         1  0/4/1/0.0.0.0.0      sdisk          CLAIMED     DEVICE       HP      DG146ABAB4
                               /dev/dsk/c1t0d0     /dev/dsk/c1t0d0s2   /dev/rdsk/c1t0d0    /dev/rdsk/c1t0d0s2
                               /dev/dsk/c1t0d0s1   /dev/dsk/c1t0d0s3   /dev/rdsk/c1t0d0s1  /dev/rdsk/c1t0d0s3
disk        87  0/4/1/0.0.0.2.0      sdisk          CLAIMED     DEVICE       HP      DG0146FAMWL
                               /dev/dsk/c1t2d0   /dev/rdsk/c1t2d0

...

 

What am I missing, what "No such device"?

 

Thanks

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 12 of 24 (2,328 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

that's strange, can you run :

 

# saslist get_info lun sasd

# sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate=all

# sasmgr get_info -D /dev/sasd0 -q raid
# ioscan -fn

Windows?, no thanks
Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 13 of 24 (2,317 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

I've attached the output from these commands.

 

 

Anyway, right now maybe I should focuse on solve the lvlnboot error, and try another option.

I'm thinking about reducing vg00, to remove all c1t1d0s2 references, and then add c1t2d0s2 (I'll have to partition the disk again), and then re-mirror the lvols.

 

What do you think about this?

 


Thanks.

Acclaimed Contributor
Torsten.
Posts: 23,442
Registered: ‎10-02-2001
Message 14 of 24 (2,309 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

You obviously booted the system without the failed disks, so the old device files are gone and you cannot redirect.

 

>> I'm thinking about reducing vg00, to remove all c1t1d0s2 references, and then add c1t2d0s2 (I'll have to partition the disk again), and then re-mirror the lvols.

 

This is the way to go ...


Hope this helps!
Regards
Torsten.

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Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 15 of 24 (2,306 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

As torsten points out, your old device isn't present anymore, that procedure is for online replacement only:

 

#saslist get_info lun sasd
HBA device file: /dev/sasd0
-----------------------------


LUN dsf              Hardware Path                  SAS Address
------------------------------------------------------------------
/dev/rdsk/c1t0d0     0/4/1/0.0.0.0.0                0x5000c5000409d105
/dev/rdsk/c1t2d0     0/4/1/0.0.0.2.0                0x5000c5001695193d


#sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate=all
/dev/rdsk/c1t0d0          0/4/1/0.0.0.0.0           1     7     OFF
/dev/rdsk/c1t2d0          0/4/1/0.0.0.2.0           1     8     OFF
Windows?, no thanks
Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 16 of 24 (2,303 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Hi, thanks both of you.

 

I saw this other post (http://h30499.www3.hp.com/t5/System-Administration/MPT-SAS-Problem-with-disk-ID/td-p/5592209#.UwSMaO...) and I thought I could try to recover the old DSFs with mknod or mksf.

 

If it's not the case, I will do the other option.

 

But before attempting to reduce the vg00, there is one thing I'd like to solve.

Right now lvlnboot shows no information, only an error:

 

#lvlnboot -v

lvlnboot: Couldn't query physical volume "/dev/dsk/c1t1d0s2":

The specified path does not correspond to physical volume attached to

this volume group

 

#lvlnboot -v /dev/vg00

lvlnboot: Couldn't query physical volume "/dev/dsk/c1t1d0s2":

The specified path does not correspond to physical volume attached to

this volume group

 

It shows no info about the remaining disk in vg00.

 

In this situation I don't feel comfortable about reducing vg00. How can I solve this error?

 

I'm thinking about doing:

lvlnboot -r /dev/vg00/lvol3
lvlnboot -s /dev/vg00/lvol2
lvlnboot -b /dev/vg00/lvol1

 

And see if this solves the error.

 

¿What do you think?

 

Thanks

Acclaimed Contributor
Torsten.
Posts: 23,442
Registered: ‎10-02-2001
Message 17 of 24 (2,300 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Whoever wrote the post you found thinks it is worth to try ... ;-)

Hope this helps!
Regards
Torsten.

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Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 18 of 24 (2,298 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

As I posted above, I tried to recreate the DSFs with mknod (and mksf), but no luck.

 

It still shows the "No such device" error.

 

 

Forgetting the sasmgr option, and focusing on the other option, right now I'm scared about the lvlnboot error.

 

#lvlnboot -v
lvlnboot: Couldn't query physical volume "/dev/dsk/c1t1d0s2":
The specified path does not correspond to physical volume attached to
this volume group

 

I now it's normal that it complains about the missing disk, but what I don't think it's normal is that it doesn't show anything else, no information about the root, swap or boot devices.

 

 

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 19 of 24 (2,285 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

This is what I'm planning to do:

 

vgreduce -f /dev/vg00


mv /etc/lvmtab /etc/lvmtab.bck.20140219

vgscan -v

# CHECK VG00 AND THE OTHER VGs
vgdisplay -v
strings /etc/lvmtab

 

# IF VG00 IS MISSING, RECOVER ORIGINAL LVMTAB
mv /etc/lvmtab.bck.20140219 /etc/lvmtab

# IF VG00 IS CORRECT
vgfcgbackup /dev/vg00

 

 

After that, I will continue with the new mirror, and I'll try to solve the lvlnboot error.

 

 

What do you think, do you see any mistake, or is there something I should or should not do?

 

Thanks.

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 20 of 24 (2,276 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

[ Edited ]

Hi,

 

You can try first with vgreduce -f /dev/vg00.

 

If it tells you that you still have PEs in use, you need to lvreduce the bad disk PEs from each lvol using the missing disk key(-k).

 

For example:

 

Get the key of the missing disk:

lvdisplay -k -v /dev/vg00/lvol1

lvreduce -k -m 0 /dev/vg00/lvol1 0      ---> the last number is the missing disk key

 

You also have and lvol without mirror, that you will have to remove.

 

Once you have reduced all your lvols you can do the:

 

#vgreduce -f /dev/vg00

 

Check if /etc/lvmtab only has the good disk in vg00, if it does:

 

#vgchange -a y /dev/vg00

 

If it still has both disks, you will have to use vgscan as you metioned and then vgchange -a y /dev/vg00:

 

#mv /etc/lvmtab /etc/lvmtab.old

#vgscan -v

#strings /etc/lvmtab

#vgchange -a y /dev/vg00

Windows?, no thanks
Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 21 of 24 (2,272 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

Thanks a lot, I will try and I will update the post.

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 22 of 24 (2,257 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

GREAT!!!

 

Thanks a lot, it's worked perfectly well.

 

I've removed the non-mirrored lvol.

I've reduced the mirrored lvols with lvreduce -k.

I've reduced vg00 with -f.

 

/etc/lvmtab still showed the failed disk, so I've moved it and done vgscan.

 

Now /etc/lvmtab only shows one disk, and vgdisplay doesn't throw any errors.

 

And also, lvlnboot now shows the correct information, and doesn't show errors (except some not activated VGs):

#lvlnboot -v

Boot Definitions for Volume Group /dev/vg00:

Physical Volumes belonging in Root Volume Group:

        /dev/dsk/c1t0d0s2 (0/4/1/0.0.0.0.0) -- Boot Disk

Boot: lvol1     on:     /dev/dsk/c1t0d0s2

Root: lvol3     on:     /dev/dsk/c1t0d0s2

Swap: lvol2     on:     /dev/dsk/c1t0d0s2

Dump: lvol2     on:     /dev/dsk/c1t0d0s2, 0

 

lvlnboot: Volume group not activated.

Cannot display volume group "/dev/DATAVG".

lvlnboot: Volume group not activated.

...

 

Now I will go on with the standard vg00 mirror procedure.

 

 

Thanks a lot.

Advisor
ManuelRC
Posts: 20
Registered: ‎02-14-2014
Message 23 of 24 (2,249 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

I've finally mirrored the vg00 lvols, and recreated the non-mirrored lvol (and this time I've mirrored it).  I will restore its contents from backup.

 

Just one last thing.

When mirroring /dev/vg00/lvol2 it failed.

 

#lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c1t2d0s2
The newly allocated mirrors are now being synchronized. This operation will
take some time. Please wait ....
lvextend: Couldn't re-synchronize stale partitions of the logical volume:
I/O error
lvextend: Couldn't resynchronize logical volume "/dev/vg00/lvol2".

 

#lvsync /dev/vg00/lvol2

lvsync: Couldn't re-synchronize stale partitions of the logical volume: Device offline/Powerfailed

lvsync: Couldn't resynchronize logical volume "/dev/vg00/lvol2".

 

This message appears in /var/adm/syslog/syslog.log:

EMS [2459]: ------ EMS Event Notification ------   Value: "CRITICAL (5)" for Resource: "/storage/events/disks/default/0_4_1_0.0.0.0.0"    
(Threshold:  >= " 3")    Execute the following command to obtain event details:   /opt/resmon/bin/resdata -R 161153026 -r /storage/events/disks/default/0_4_1_0.0.0.0.0 -n 16

 

Results from resdata are attached.

 

All the other lvols have syncd well.

 

I've restarted the server, but it still doesn't sync.

 

Does anyone know what may be causing this?

 

 

Thanks a lot.

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 24 of 24 (2,238 Views)

Re: HP-UX 11.23 failed internal mirrored vg00 disk

From the error you posted, the "good" disk is giving and IO error:

 

Disk at hardware path 0/4/1/0.0.0.0.0 : I/O request failed


You can check with lvdisplay -v /dev/vg00/lvol2, for stale PE's on the good disk. 

 

You can also check the "good" disk running a read dd to see if any errors are reported.


Windows?, no thanks
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