From: Christoph Hellwig <hch@lst.de>
To: Josef Bacik <josef@toxicpanda.com>
Cc: Christoph Hellwig <hch@lst.de>, Chris Mason <clm@fb.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: small writeback fixes
Date: Thu, 20 Jul 2023 06:48:27 +0200 [thread overview]
Message-ID: <20230720044827.GA1689@lst.de> (raw)
In-Reply-To: <20230719214255.GA994357@perftesting>
On Wed, Jul 19, 2023 at 05:42:55PM -0400, Josef Bacik wrote:
> More investigation, what's happening is dmsetup suspend is stuck because it's
> waiting for outstanding io to finish, so these other IO's are stuck in the
> deffered list for the linear mapping. I'm still getting to why the outstanding
> IO's aren't going, I'll figure that out in the morning, but seems like this may
> not be a btrfs problem. Thanks,
I tried to bisect it based on my earlier observation that 6.5-rc2 wasn't
affect, but at that point could not reproduce the hang any more.
Overall the conditions seems very non-deterministic and might depend
on the state and thus latency of the SSD or something like that.
Instead of seen a bunch of unmount failures and then busy devices which
clear up with another re-run..
prev parent reply other threads:[~2023-07-20 4:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-13 13:04 small writeback fixes Christoph Hellwig
2023-07-13 13:04 ` [PATCH 1/9] btrfs: don't stop integrity writeback too early Christoph Hellwig
2023-07-13 13:04 ` [PATCH 2/9] btrfs: don't wait for writeback on clean pages in extent_write_cache_pages Christoph Hellwig
2023-07-13 13:04 ` [PATCH 3/9] btrfs: fix an error handling corner case in cow_file_range Christoph Hellwig
2023-07-13 13:04 ` [PATCH 4/9] btrfs: move the cow_fixup earlier in writepages handling Christoph Hellwig
2023-07-13 13:04 ` [PATCH 5/9] btrfs: fix handling of errors from __extent_writepage_io Christoph Hellwig
2023-07-13 13:04 ` [PATCH 6/9] btrfs: stop submitting I/O after an error in extent_write_locked_range Christoph Hellwig
2023-07-13 13:04 ` [PATCH 7/9] btrfs: fix a race in clearing the writeback bit for sub-page I/O Christoph Hellwig
2023-07-13 13:04 ` [PATCH 8/9] btrfs: remove the call to btrfs_mark_ordered_io_finished in btrfs_writepage_fixup_worker Christoph Hellwig
2023-07-13 13:04 ` [PATCH 9/9] btrfs: lift the call to mapping_set_error out of cow_file_range Christoph Hellwig
2023-07-14 13:59 ` small writeback fixes Josef Bacik
2023-07-18 17:17 ` Josef Bacik
2023-07-19 5:39 ` Christoph Hellwig
2023-07-19 11:50 ` Christoph Hellwig
2023-07-19 14:30 ` Josef Bacik
2023-07-19 15:25 ` Christoph Hellwig
2023-07-19 21:42 ` Josef Bacik
2023-07-20 4:48 ` Christoph Hellwig [this message]
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