From: David Sterba <dsterba@suse.cz>
To: Qu Wenruo <wqu@suse.de>
Cc: dsterba@suse.cz, Qu Wenruo <quwenruo.btrfs@gmx.com>,
Qu Wenruo <wqu@suse.com>,
linux-btrfs@vger.kernel.org
Subject: Re: [PATCH v2 0/6] btrfs: qgroup: Delay subtree scan to reduce overhead
Date: Sat, 8 Dec 2018 17:17:37 +0100 [thread overview]
Message-ID: <20181208161736.GI23615@twin.jikos.cz> (raw)
In-Reply-To: <4cea2079-cef5-6833-884d-a3c8edc4c14a@suse.de>
On Sat, Dec 08, 2018 at 08:50:32AM +0800, Qu Wenruo wrote:
> > I've adapted a stress tests that unpacks a large tarball, snaphosts
> > every 20 seconds, deletes a random snapshot every 50 seconds, deletes
> > file from the original subvolume, now enhanced with qgroups just for the
> > new snapshots inherigin the toplevel subvolume. Lockup.
> >
> > It gets stuck in a snapshot call with the follwin stacktrace
> >
> > [<0>] btrfs_tree_read_lock+0xf3/0x150 [btrfs]
> > [<0>] btrfs_qgroup_trace_subtree+0x280/0x7b0 [btrfs]
>
> This looks like the original subtree tracing has something wrong.
Yes, I ran the test on current master and it locked up too, so it's not
due to your patchset.
> Thanks for the report, I'll investigate it.
Thanks.
next prev parent reply other threads:[~2018-12-08 16:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-08 5:49 [PATCH v2 0/6] btrfs: qgroup: Delay subtree scan to reduce overhead Qu Wenruo
2018-11-08 5:49 ` [PATCH v2 1/6] btrfs: qgroup: Allow btrfs_qgroup_extent_record::old_roots unpopulated at insert time Qu Wenruo
2018-11-08 5:49 ` [PATCH v2 2/6] btrfs: relocation: Delay reloc tree deletion after merge_reloc_roots() Qu Wenruo
2018-11-08 5:49 ` [PATCH v2 3/6] btrfs: qgroup: Refactor btrfs_qgroup_trace_subtree_swap() Qu Wenruo
2018-11-08 5:49 ` [PATCH v2 4/6] btrfs: qgroup: Introduce per-root swapped blocks infrastructure Qu Wenruo
2018-11-08 5:49 ` [PATCH v2 5/6] btrfs: qgroup: Use delayed subtree rescan for balance Qu Wenruo
2018-11-08 5:49 ` [PATCH v2 6/6] btrfs: qgroup: Cleanup old subtree swap code Qu Wenruo
2018-11-12 21:33 ` [PATCH v2 0/6] btrfs: qgroup: Delay subtree scan to reduce overhead David Sterba
2018-11-13 17:07 ` David Sterba
2018-11-13 17:58 ` Filipe Manana
2018-11-13 23:56 ` Qu Wenruo
2018-11-14 19:05 ` David Sterba
2018-11-15 5:23 ` Qu Wenruo
2018-11-15 10:28 ` David Sterba
2018-12-06 19:35 ` David Sterba
2018-12-06 22:51 ` Qu Wenruo
2018-12-08 0:47 ` David Sterba
2018-12-08 0:50 ` Qu Wenruo
2018-12-08 16:17 ` David Sterba [this message]
2018-12-10 10:45 ` Filipe Manana
2018-12-10 11:23 ` Qu Wenruo
2018-12-10 5:51 ` Qu Wenruo
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