rootvg and other VG's "go to sleep" after some hours
 
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Author Topic: rootvg and other VG's "go to sleep" after some hours  (Read 644 times)
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Michael
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« Reply #4 on: April 23, 2010, 10:19:42 AM »

Well, it does not twig any grey matter - but, I am wondering if your concurrent VG information is still the "old" style that was developed for SSA way back when, or if it is the new style - now called "extended concurrent".

Maybe there are new volume groups - which would make them new style by default.

And, unfortunately, I do not know of a command to see which format is in use. The old format was onl;y supported with SSA disks, and I think in AIX 5.2 both were supported, and in AIX 5.3, or at some tech level, all support for SSA concurrent format was removed.

Note: HACMP only works with the extended format, and - afaik, if HACMP is not installed, the extended concurrent is only a capability - not an active feature. The bos.clvm.enh fileset is there to make the creation/update possible while the cluster.clvm fileset adds the needed code for the heartbeat network.

The standard questions: oslevel -s; have you submitted a PMR to IBM?

Like you, I am surprised that there are errors reported in lvmt.log. I would not expect any activity with the cluster fileset installed.
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roseash
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« Reply #3 on: April 12, 2010, 07:37:26 AM »

Thanks for the replies, but these are not the issue...

The storage is SSA disk, locally attached. No sharing. Simple setup.
Under AIX 5.3 I do have the bos.clvm.enh fileset installed, which I assumed would not hurt, if I then later want to use HACMP (unlikely in this case).

But....

I am getting consistent errors in /tmp/lvmt.log which seem to indicate that refers to tellclvmd and make_request_to_gsclvmd, which both complain that the gsclvmd subsystem is not running.

Does this endicate if I de-install the fileset, that the "checks" happening somewhere will not try to call the ELVM calls to do what appears to be functions for enhanced concurrency?

I wish I could cut/paste a sample of the errors in /tmp/lvmt.log (which do refer to locks occasionally) but it is on an isolated an secure system.

Does this twig anyones grey matter?
Thanks
Mark Remenyi
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Michael
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« Reply #2 on: March 12, 2010, 04:45:16 PM »

what storage system is behind this? local, SAN, NAS??
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John R Peck
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« Reply #1 on: March 10, 2010, 12:20:43 AM »


I suggest exportvg then importvg.  Never seen anything like that either - hangs with locks yes, but not straight back to the prompt with no further error.  Why is it apparently getting locked, not rootvg I assume, is it being shared in some way, is there a process running in cron say that kicks off to lock it when you leave the machine idle ?
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roseash
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« on: March 08, 2010, 10:44:26 PM »

Dear All,

I am not sure if anyone has seen this before. It certainly has got me stumped....

After the system is left idle for 12 or so hours, I come back to it, login as root and all looks good. EXCEPT, the Volume Group details are not accessible.

lsvg <vgname> returns no output, just goes to next prompt
same for lsvg -l or lsvg -p.
It is as if the VG's are lovked, but insteag of waiting, the prompt returns back with no output and no errors.

I can "wake up" the VG with:  chvg -u <vgname>
That works.
Nothing in error log.

This is a H70 running AIX 5.3 TL-11 (latest)
It was converted from AIX.4.3 by a Migration Installation.

Has anyone seen this before?
After 20+ years of AIX admin work, I have never experienced this.

Regards,
mark Remenyi
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