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тАО05-06-2010 03:56 AM
тАО05-06-2010 03:56 AM
DP 6 with a HPUX 11i SG package FS failures
Status details:
HPUX 11i DP 6 cell server
HPUX 11i SG cluster running six packages
OK, my problem/issue I have a HPUX 11i SG cluster running six packages, all packages backup fine except one package.
Each package has say roughly 6-10 file systems attached via a SAN/EVA, as stated five packages/DP clients backup OK, on the failing client, I have say 15 files systems varying in size from 10GB to 100GB, only four FSs backup OK, its appears to be not volume size dependant.
What I have checked;
1. I have tried to backup a failing FS from failing package on a non-failing package, this FS backup still fails.
2. The failure is repeatable, DP backup session just stops and hangs/times out, no errors in DP log.
I am perplexed by this fail mode; any help/pointers would be appreciated.
Regards...
Richard
HPUX 11i DP 6 cell server
HPUX 11i SG cluster running six packages
OK, my problem/issue I have a HPUX 11i SG cluster running six packages, all packages backup fine except one package.
Each package has say roughly 6-10 file systems attached via a SAN/EVA, as stated five packages/DP clients backup OK, on the failing client, I have say 15 files systems varying in size from 10GB to 100GB, only four FSs backup OK, its appears to be not volume size dependant.
What I have checked;
1. I have tried to backup a failing FS from failing package on a non-failing package, this FS backup still fails.
2. The failure is repeatable, DP backup session just stops and hangs/times out, no errors in DP log.
I am perplexed by this fail mode; any help/pointers would be appreciated.
Regards...
Richard
3 REPLIES 3
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тАО05-06-2010 12:17 PM
тАО05-06-2010 12:17 PM
Re: DP 6 with a HPUX 11i SG package FS failures
since you could narrow it down to one particular filesystem,
why don't you create a job, say HeySucker, and put this in full debug mode via commandline to overcome useless debug logs of other activity.
#omnib -datalist HeySucker -debug 1-400 WatsUp.txt
why don't you create a job, say HeySucker, and put this in full debug mode via commandline to overcome useless debug logs of other activity.
#omnib -datalist HeySucker -debug 1-400 WatsUp.txt
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тАО05-07-2010 08:18 AM
тАО05-07-2010 08:18 AM
Re: DP 6 with a HPUX 11i SG package FS failures
OK, thanks for the DP command example.
I ran a backup in debug mode and the failing backups on the SG package FS seem to be because of 'dead' sym links. Watching the backup run, it hits a directory with a few dozen sym links to /net/dead host/file system/blah* and immediately stops flowing data to the drive while each sym link times out.
Each sym link takes a number seconds to solve/time out, as can be seen in the error log. This I guess continues until the DP session timeouts altogether and then the DP session fails, also holds up the queuing DP sessions and drive usage.
I don't remember seeing DP fail like this before, and lots of other servers will have dead links on them.
So why is this FS DP session failing while others don't?
Does anyone know how to stop DP from trying to stat every sym link?
* The 'dead host' is no longer in the DNS lookup; it is a retried/decommissioned server.
I ran a backup in debug mode and the failing backups on the SG package FS seem to be because of 'dead' sym links. Watching the backup run, it hits a directory with a few dozen sym links to /net/dead host/file system/blah* and immediately stops flowing data to the drive while each sym link times out.
Each sym link takes a number seconds to solve/time out, as can be seen in the error log. This I guess continues until the DP session timeouts altogether and then the DP session fails, also holds up the queuing DP sessions and drive usage.
I don't remember seeing DP fail like this before, and lots of other servers will have dead links on them.
So why is this FS DP session failing while others don't?
Does anyone know how to stop DP from trying to stat every sym link?
* The 'dead host' is no longer in the DNS lookup; it is a retried/decommissioned server.
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тАО05-10-2010 12:23 AM
тАО05-10-2010 12:23 AM
Re: DP 6 with a HPUX 11i SG package FS failures
>Does anyone know how to stop DP from trying to stat every symlink?
Any reason you don't just remove those bogus symlinks?
I had this happen with "ll -F" and after N times, I finally nuked them.
Any reason you don't just remove those bogus symlinks?
I had this happen with "ll -F" and after N times, I finally nuked them.
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