Bug #379

Sporadic ZFS I/O hangs

Added by Jan-Peter Koopmann over 3 years ago. Updated almost 3 years ago.

Status:Closed Start date:2010-10-26
Priority:High Due date:
Assignee:- % Done:

0%

Category:OS/Net (Kernel and Userland)
Target version:-
Difficulty:Medium Tags:needs-triage

Description

Hi,

I am desperatly waiting for a patch for

http://bugs.opensolaris.org/bugdatabase/view_bug.do;jsessionid=38ee10a8077df0a8bbe2c7089107?bug_id=6942439

this issue is fixed with osol svn148 it seems. I found it in mq_onnv-stable:
http://hg.openindiana.org/mq_onnv-stable/rev/4ac7d8163b5f
http://hg.openindiana.org/mq_onnv-stable/diff/4ac7d8163b5f/onnv-f3dd638d3435-zfs-io-halts.patch

however I cannot find it in mq_onnv-gate and was instructed on the IRC #openindiana channel to raise the issue here. Looks like bug number 6863750 in OpenIndiana/Illumos is what I need.

History

Updated by Albert Lee over 3 years ago

  • Status changed from New to Resolved

This was fixed prior to the tap to ON being turned off, so oi_147 already includes the change: http://hg.openindiana.org/onnv-gate/rev/f3dd638d3435

Let us know if you're still experiencing the symptoms of the problem.

Updated by Jan-Peter Koopmann over 3 years ago

Hi,

I am indeed still experiencing the symptoms (several times a week). Is there a "create a crash dump for analysis" for dummies section you can point me to? Or what next to debug and how?

Kind regards,
JP

Updated by Albert Lee over 3 years ago

Please force a crash dump as in http://docs.sun.com/app/docs/doc/817-1985/fvzni?a=view
This bug will probably be moved over to illumos once we have the details.

Updated by Jan-Peter Koopmann over 3 years ago

Hi Albert,

I might be missing something obvious in that article but in my case the system is not accessible any more when the bug hits me. I cannot log in via console or ssh. How can I produce a crash dump then with the info in that article?

Regards,
JP

Updated by Albert Lee over 3 years ago

  • Subject changed from patch missing in gate / I/O hangs 6942439 / bug 6863750 to Sporadic ZFS I/O hangs
  • Status changed from Resolved to New

Jan-Peter Koopmann wrote:

Hi Albert,

I might be missing something obvious in that article but in my case the system is not accessible any more when the bug hits me. I cannot log in via console or ssh. How can I produce a crash dump then with the info in that article?

You need to enter the kernel debugger (kmdb) to produce a crash dump. Provided the debugger was loaded at boot with -k, the OS does not need to be making progress to use kmdb.

-Albert

Updated by Julian Wiesener almost 3 years ago

  • Status changed from New to Closed

since we didn't got feedback for 6 monts, i close the bug

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