From: Christoph Hellwig <hch@infradead.org>
To: Avi Kivity <avi@scylladb.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: ENSOPC on a 10% used disk
Date: Wed, 17 Oct 2018 01:47:16 -0700 [thread overview]
Message-ID: <20181017084716.GL16896@infradead.org> (raw)
In-Reply-To: <40c52a7b-2520-8ae4-11d5-ae4b33e1dc29@scylladb.com>
On Wed, Oct 17, 2018 at 10:52:48AM +0300, Avi Kivity wrote:
> I have a user running a 1.7TB filesystem with ~10% usage (as shown by df),
> getting sporadic ENOSPC errors. The disk is mounted with inode64 and has a
> relatively small number of large files. The disk is a single-member RAID0
> array, with 1MB chunk size. There are 32 AGs. Running Linux 4.9.17.
4.9.17 is rather old and you'll have a hard time finding someone
familiar with it..
> Is this a known issue? Would upgrading the kernel help?
Two things that come to mind:
- are you sure there is no open fd to the unlinked files? That would
keep the space allocated until the last link is dropped.
- even once we drop the inode the space only becomes available once
the transaction has committed. We do force the log if we found
a busy extent, but there might be some issues. Try seeing if you
hit the xfs_extent_busy_force trace point with your workload.
- if you have online discard (-o discard) enabled there might be
more issues like the above, especially on old kernels.
next prev parent reply other threads:[~2018-10-17 16:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 7:52 ENSOPC on a 10% used disk Avi Kivity
2018-10-17 8:47 ` Christoph Hellwig [this message]
2018-10-17 8:57 ` Avi Kivity
2018-10-17 10:54 ` Avi Kivity
2018-10-18 1:37 ` Dave Chinner
2018-10-18 7:55 ` Avi Kivity
2018-10-18 10:05 ` Dave Chinner
2018-10-18 11:00 ` Avi Kivity
2018-10-18 13:36 ` Avi Kivity
2018-10-19 7:51 ` Dave Chinner
2018-10-21 8:55 ` Avi Kivity
2018-10-21 14:28 ` Dave Chinner
2018-10-22 8:35 ` Avi Kivity
2018-10-22 9:52 ` Dave Chinner
2018-10-18 15:44 ` Avi Kivity
2018-10-18 16:11 ` Avi Kivity
2018-10-19 1:24 ` Dave Chinner
2018-10-21 9:00 ` Avi Kivity
2018-10-21 14:34 ` Dave Chinner
2018-10-19 1:15 ` Dave Chinner
2018-10-21 9:21 ` Avi Kivity
2018-10-21 15:06 ` Dave Chinner
2018-10-18 15:54 ` Eric Sandeen
2018-10-21 11:49 ` Avi Kivity
2019-02-05 21:48 ` Dave Chinner
2019-02-07 10:51 ` Avi Kivity
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