Messages in this thread | | | Date | Tue, 28 Dec 2004 12:39:47 +0100 | From | bert hubert <> | Subject | Re: unkillable processes using samba, xfs and lvm2 snapshots (k 2.6.10) |
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On Tue, Dec 28, 2004 at 12:24:01PM +0100, Gildas LE NADAN wrote:
> I experience hangs on samba processes on a filer using xfs over lvm2 as > data partitions, when there is active snapshots of the xfs partitions.
A trick is to enable alt-sysrq and press alt-sysrq-t (I think) which spams your syslog with backtraces of all processes currently running, including the ones stuck in 'D' state (ps aux | grep " D ").
If you isolate these backtraces and send them to this list, they will enable developers to help you. Make sure you add 'includes backtrace' in your Subject.
> Testings showed that the result was the same, whether the snapshots were > mounted or not : smbd processes are locked and unkillable while the > machine is normaly working otherwise, except software reboot is > impossible and hardware reset is needed.
For maximum usefulness, make your setup as simple as possible and reproduce.
Good luck - I personally can't help you in any real way, except to help you get the debugging information that is needed.
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