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From: David Sterba <dsterba@suse.cz>
To: Nikolay Borisov <nborisov@suse.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 0/4] More split-brain fixes for metadata uuid feature
Date: Tue, 14 Jan 2020 18:14:03 +0100	[thread overview]
Message-ID: <20200114171403.GH3929@twin.jikos.cz> (raw)
In-Reply-To: <20200110121135.7386-1-nborisov@suse.com>

On Fri, Jan 10, 2020 at 02:11:31PM +0200, Nikolay Borisov wrote:
> Here are 4 patches which fix a newly found split-brain scenario in the
> METADATA_UUID_INCOMPAT code. They are mostly the identical with Su's
> original submission but I have reworked the changelogs and some function
> names. Hence, I retained his authorship of the patches.
> 
> First 2 patches factor out some code with the hopes of making find_fisd a bit
> more readable and simplifying the myriad of nested 'if' in device_list_add.
> 
> Patch 3 extends find_fsid_changed to handle the case where a disk with
> METADATA_UUID_INCOMPAT and FSID_CHANGING_IN_PROGRESS is scanned after a disk
> which has successfully been switched to FSID == METADATA_UUID state and has
> created btrfs_fs_devices.
> 
> Patch 4 handles the counterpart situation - a fully switched disk is scanned
> after one which has had METADATA_UUID_INCOMPAT and FSID_CHANGING_IN_PROGRESS
> set.
> 
> This series should be applied to stable branches following 5.0 when the
> metadata_uuid feature got introduced.
> 
> This patchset was tested with btrfs-progs' misc 034-metadata-uuid test and a full
> xfstest run with no regressions. I will also be sending an improvement to the
> test case which exercises the newly added code.
> 
>   btrfs: Call find_fsid from find_fsid_inprogress
>   btrfs: Factor out metadata_uuid code from find_fsid.
>   btrfs: Handle another split brain scenario with metadata uuid feature
>   btrfs: Fix split-brain handling when changing FSID to metadata uuid

I'm adding it to for-next, thanks.

  parent reply	other threads:[~2020-01-14 17:14 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-10 12:11 Nikolay Borisov
2020-01-10 12:11 ` [PATCH 1/4] btrfs: Call find_fsid from find_fsid_inprogress Nikolay Borisov
2020-01-10 15:24   ` Josef Bacik
2020-01-10 12:11 ` [PATCH 2/4] btrfs: Factor out metadata_uuid code from find_fsid Nikolay Borisov
2020-01-10 15:25   ` Josef Bacik
2020-01-10 12:11 ` [PATCH 3/4] btrfs: Handle another split brain scenario with metadata uuid feature Nikolay Borisov
2020-01-10 15:29   ` Josef Bacik
2020-01-21 15:16   ` David Sterba
2020-01-10 12:11 ` [PATCH 4/4] btrfs: Fix split-brain handling when changing FSID to metadata uuid Nikolay Borisov
2020-01-10 15:58   ` Josef Bacik
2020-01-14 17:14 ` David Sterba [this message]
2020-01-21 15:23   ` [PATCH 0/4] More split-brain fixes for metadata uuid feature David Sterba

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