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From: Chris Murphy <lists@colorremedies.com>
Date: Wed, 11 Jan 2017 16:13:22 -0700
Message-ID: <CAJCQCtSZyfHdmsaVdEM7iQiKfK-s4Qqs4ORZrE1MCpWCgeCWbw@mail.gmail.com>
Subject: Re: read-only fs, kernel 4.9.0, fs/btrfs/delayed-inode.c:1170 __btrfs_run_delayed_items,
To: Chris Murphy <lists@colorremedies.com>
Cc: Btrfs BTRFS <linux-btrfs@vger.kernel.org>, agruenba@redhat.com
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Looks like there's some sort of xattr and Btrfs interaction happening
here; but as it only happens with some subvolumes/snapshots not all
(but 100% consistent) maybe the kernel version at the time the
snapshot was taken is a factor? Anyway git bisect says

# first bad commit: [6c6ef9f26e598fb977f60935e109cd5b266c941a] xattr:
Stop calling {get,set,remove}xattr inode operations

btrfs-image produces a 159M file.

I've updated the bug report
https://bugzilla.kernel.org/show_bug.cgi?id=191761 and also adding
patch author to cc.


Chris Murphy