vg's not being mounted after reboot

[Randy_9]

For some reason a reboot will result in 2 of the systems vg's not being mounted or made accessible. The "ioscan" command shows them
as "CLAIMED" but in SAM both disks show up as
UNUSED in "disks devices". I had to activate
them via "vgchange" after "vgdisplay" showed
them being inactive. What can I do to make sure
these vg's come up on their own after a reboot.
They are both listed correctly in /etc/lvmtab also.
Thanks,
Randy Vincent

[Uday_S_Ankolekar]

Hi,

check /etc/fstab has entry for these VG if not add it.

Goodluck,
-USA..

[harry d brown jr]

Also, along with Uday's recommendation, make sure you have the latest patches installed!

live free or die
harry

[Wodisch]

Hello,

are those station members of an MC/SC cluster (ServiceGuard)?
then this is intended, as these VGs should only be activated by the MC/SG-packages...
Else have a look into your "/etc/lvmrc", and ensure "AUTO_ACTIVATE_VG" is set to "1".

HTH,
Wodisch

[John Poff]

One other thing to consider is your /etc/lvmrc file. If you have the AUTO_VG_ACTIVATE variable set to zero, you'll need to put your volume groups that need to be activated into the custom_vg_activation function. Usually the AUTO_VG_ACTIVATE is turned off when you don't won't all the volume groups activated at boot. We have ours set that way on our machines that are in a ServiceGuard cluster.

JP

[James R. Ferguson]

Hi Randy:

Make sure that AUTO_VG_ACTIVATE=1 in /etc/lvmrc unless you are custom activating volume groups (within /etc/lvmrc).

Also, have a look at /var/adm/syslog/syslog.log for any potential information.

Regards!

...JRF...

[Randy_9]

The AUTO_VG_ACTIVATE is currently set to "1".
And the systems has vg00, vg01, vg02, vg03, vg04 for volume groups. It is vg03 & vg04
that don't come up. Both are 17gig drives on a
11.00 32bit system. Should I customize the /etc/lvmrc file and if so how would the
function look to accomplish this, like this????
/sbin/vgchange -a y -s
parallel_vg_sync "dev/vg00 /dev/vg01"
parallel_vg_sync "/dev/vg02 /dev/vg03"
parallel_vg_sync "/dev/vg04"

Plus there is not MCService Guard s/w installed.
Thanks,
Randy Vincent

[Jason VanDerMark]

Another thing that you may want to check is that your mount options within the /etc/fstab truely correspond to the way that the lvols are setup. For example. If you create a few lvols and do not specify the -o largefiles option when you run newfs, and then you copy a line in your /etc/fstab(which contains a largefiles option) to create your own entry, then when the server boots up it will attempt to mount the lvols with the options that you select. If you don't have the option on the lvol in question then the devices will not mount. Not sure if this helps, but I had this happen to me once. Live and learn.

Regards,
Jason V.

[Roger Baptiste]

Randy,

If the autovgactivate is set to 1, the system should activate the VG's on boot.
Check rc.log and syslog.log file to see whether any messages on this activation were recorded.

HTH
raj

[Jason VanDerMark]

Oops, sorry I misread your problem. I thought that you were having a problem with filesystems not mounting at boot time. Well, its still good advice. :-)

Regards,
Jason V.

[Randy_9]

The /etc/rc.log file indicated that it could find no device or address for the disks that
are assigned to the problem VG's (vg03, vg04).
The command "ioscan" show them as claimed and
the device files are there?. While in SAM
the LV's associated with these VG's showed up
as unused.
Thanks,
Randy

[Duncan Edmonstone]

Are the disks in these volume groups in a different cabinet? Are you sure that the disks were all spun up before the server began to boot?

[Randy_9]

Both of the disks are external and were powered
up prior to the CPU being fired up. These disks
are 17gig. The LV's that make up these VG's
were created with "nolargefile" and are noted
that way in the /etc/fstab file.
Randy

[Duncan Edmonstone]

Perhaps it would help if you posted the output of the following commands to the forum:

ioscan -fnC disk

strings /etc/lvmtab

vgdisplay vg03

vgdisplay vg04

Rgds

Duncan

[Uday_S_Ankolekar]

Hi,
Restore the LVM configuration information for the physical volume /dev/rdsk/0 that was saved in the default file /etc/lvmconf/vgnn.conf:
vgcfgrestore -n /dev/vgnn /dev/rdsk/

-USA..

[Randy_9]

Command ouput as requested...
Thanks,
Randy

[Randy_9]

I had already run the "vgcfgrestore" commands
for both VG's. I guess I have to wait until
the system is rebooted (???) to see if all is
well again.
Thanks everyone for your help, have
a Happy Thanksgiving : )
Randy