Re: tasks hangs in D state while writing to xfs

From: "Marcin Mirosław" <marcin@mejor.pl>
To: Amit Sahrawat <amit.sahrawat83@gmail.com>
Cc: linux-xfs@oss.sgi.com, Marcin M <gmane@mejor.pl>
Subject: Re: tasks hangs in D state while writing to xfs
Date: Sat, 15 Oct 2011 19:45:25 +0200	[thread overview]
Message-ID: <4E99C6B5.6070205@mejor.pl> (raw)
In-Reply-To: <CADDb1s3pG3JPg4nceVjbs4QiCsRY+y+juY_w3eHaup=1KVMC3A@mail.gmail.com>

W dniu 2011-10-15 18:04, Amit Sahrawat pisze:
> 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.

Hi Amit.
#  df -kT /dev/sda11
Filesystem    Type   1K-blocks      Used Available Use% Mounted on
/dev/sda11     xfs     3840937   2354891   1486046  62% /mnt/cdrom

No, i only run rsync to partition located at /dev/sda11. Meseems the
main information is size of log. Maybe there is board case when log is
minimal size (such small as mkfs allow).
Regards.

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