tasks hangs in D state while writing to xfs

[Amit Sahrawat]

Hi Marcin,
Can you share the Free blocks for the disk at the time of this
issue(df -k)? It seems that the disk do not have enough free space to
reserve a transaction.
Also, the logs also seems to be mixed. The stucked position really seems to be :
Function: xlog_grant_log_space()
	/* Is there space or do we need to sleep? */
	spin_lock(&log->l_grant_lock);
Is there any other activity which was done on the disk before you
observed these hang traces?At first it does seems to hang XFS, next if
you issue a 'sync' you will observe that sync will also turn to
TASK_UNINTERRUPTIBLE 'D' state.

Thanks & Regards,
Amit Sahrawat

On Sat, Oct 15, 2011 at 5:58 PM, Marcin M <gmane at mejor.pl> wrote:
> One more thing, probably doesn't have matter, this is Xen HVM.
>
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