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From: Omar Sandoval <osandov@osandov.com>
To: Chris Murphy <lists@colorremedies.com>
Cc: Btrfs BTRFS <linux-btrfs@vger.kernel.org>, agruenba@redhat.com
Subject: Re: read-only fs, kernel 4.9.0, fs/btrfs/delayed-inode.c:1170 __btrfs_run_delayed_items,
Date: Tue, 24 Jan 2017 20:42:53 -0800	[thread overview]
Message-ID: <20170125044253.GA18885@vader> (raw)
In-Reply-To: <CAJCQCtQ4tmCB4OBw1Jx43yunxMChRwKmcUVb1xSLr0KHwKSe-A@mail.gmail.com>

On Tue, Jan 24, 2017 at 07:53:06PM -0700, Chris Murphy wrote:
> On Tue, Jan 24, 2017 at 3:50 PM, Omar Sandoval <osandov@osandov.com> wrote:
> 
> > Got this to repro after installing systemd-container. It's happening on
> > lsetxattr() to set the SELinux context on /var/lib/machines, which is a
> > subvolume. Looking into it now. Thanks for all of the help, Chris.
> 
> Aha! So the snapshot part was a goose chase, it has nothing to do with
> that, really. Because I'm taking a snapshot of root, the nested
> /var/lib/machines subvolume is not in that snapshot, so now it has to
> be created by systemd at next boot and the proper selinux label set on
> it.
> 
> It means there's something different about subvolumes and directories
> when it comes to xattrs, and the xattr patch I found in bisect is
> exposing the difference, hence things getting tripped up.

The snapshots were actually the key -- the error was because setxattr()
was being allowed on the read-only directory created in the place of the
/var/lib/machines subvolume. Not sure if you saw the patch I sent up,
but this should fix it: https://patchwork.kernel.org/patch/9536307/

  reply	other threads:[~2017-01-25  4:43 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-02 18:50 read-only fs, kernel 4.9.0, fs/btrfs/delayed-inode.c:1170 __btrfs_run_delayed_items, Chris Murphy
2017-01-11  1:07 ` Chris Murphy
2017-01-11 23:13   ` Chris Murphy
2017-01-18 21:27     ` Chris Murphy
2017-01-19 18:05       ` Imran Geriskovan
2017-01-23 21:31       ` Omar Sandoval
2017-01-23 21:50         ` Chris Murphy
2017-01-23 21:55           ` Chris Murphy
2017-01-23 22:04             ` Omar Sandoval
2017-01-23 23:48               ` Chris Murphy
2017-01-24  0:05                 ` Omar Sandoval
2017-01-24  3:51                   ` Chris Murphy
2017-01-24 17:49                     ` Omar Sandoval
2017-01-24 18:37                       ` Chris Murphy
2017-01-24 18:56                         ` Omar Sandoval
2017-01-24 19:06                           ` Chris Murphy
2017-01-24 19:19                             ` Chris Murphy
2017-01-24 20:10                               ` Omar Sandoval
2017-01-24 20:24                                 ` Chris Murphy
2017-01-24 20:27                                   ` Omar Sandoval
2017-01-24 20:33                                     ` Chris Murphy
2017-01-24 20:48                                       ` Chris Murphy
2017-01-24 22:50                                         ` Omar Sandoval
2017-01-25  2:53                                           ` Chris Murphy
2017-01-25  4:42                                             ` Omar Sandoval [this message]
2017-01-25 22:55                                               ` Chris Murphy
2017-01-25 22:58                                                 ` Omar Sandoval
2017-01-25 23:07                                                   ` Chris Murphy
2017-01-24 20:13                               ` Chris Murphy
2017-01-24 20:17                                 ` Omar Sandoval
2017-01-24 18:59                         ` Chris Murphy

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