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SubjectRe: D state processes in 2.4.18-pre7-ac3
Andres Salomon wrote:
>
> Linux incandescent 2.4.18-pre7-ac3 #1 Tue Feb 5 01:00:50 EST 2002 i686 unknown
>
> I came home today to a bunch of processes apparently hung in jbd's
> do_get_write_access(); apparently, something deadlocked, where no
> processes could write to one of my partition's journal. That's my
> theory, anyways. Several processes had stacks similar to:
>
> ...
>
> And, kjournald had the following:
>
> Call Trace: [<c0131f0a>] [<d08ee6e6>] [<c0112380>] [<d08f08eb>]
> [<d08f07c0>]
> [<c010f4e8>]
> Warning (Oops_read): Code line not seen, dumping what data is available
>
> Trace; c0131f0a <__wait_on_buffer+6a/90>
> Trace; d08ee6e6 <[jbd]journal_commit_transaction+776/dd6>
> Trace; c0112380 <schedule+2c0/2f0>
> Trace; d08f08ea <[jbd]kjournald+10a/1a0>
> Trace; d08f07c0 <[jbd]commit_timeout+0/10>

This is the important part - we sent a write request down the
stack and it seems that I/O completion was never signalled.

You should check for any odd messages from the device driver
or LVM layers, if the logs made it to disk.

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