mirroring issue

[hpuxhelp]

how i determine if the o/s was mirrored ?
will lvdisplay show this?

[Tom Danzig · Accepted solution]

Yes. Look at the line "Mirror copies"

i.e.
Mirror copies 1

[Pete Randall]

Yes lvdisplay will show you the number of mirror copies - if it's not 0, you're mirrored.

Pete

[Mark Greene_1]

If the disks are mirrored, you can verify the integrity of the mirror like this:

lvdisplay -v /dev/vg00/lvol*|grep "stale"

If all is well, this won't return anything; otherwise you'll see the partitions that have gone stale. If you have any, look through the syslog for any disk and/or IO related errors.

HTH
mark

[Jac Kersing]

lvdisplay will show if the logical volumes are mirrored, NOT if the boot area has been mirrored as well which might be handy if you want to be able to boot the system when the primary disk failed.

Run:

if [ -f /etc/lvmtab ] then boot=`lvlnboot -v 2>&1 | awk '/Boot Disk/ {print $1} '` else boot=`mount | awk '/^\/ / { print $3 }'` fi for i in $boot do boot2=`echo $i|sed "s/s[0-9].*/s6/p"|sed "s/dsk/rdsk/p"|grep rdsk` echo "\n" diskinfo $boot2 | fold echo "\n--- LIF contents of $i ---\n" lifls -l $i echo "\n--- LIF AUTO boot string of $i ---\n" lifcp $i:AUTO - echo "\n" done

The output should contain '--- LIF AUTO boot string of ' twice if the system is bootable from the mirror as well.