Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
MIME-Version: 1.0
References: <20181023212358.60292-1-paullawrence@google.com>
In-Reply-To: <20181023212358.60292-1-paullawrence@google.com>
From:   MegaBrutal <megabrutal@gmail.com>
Date:   Thu, 25 Oct 2018 18:30:00 +0200
Message-ID: <CAE8gLhmtrfprc93-XfomNEK5ZgxA_RFA0DnFrEnHjB0q31wkyg@mail.gmail.com>
Subject: Re: [RFC] dm-bow working prototype
To:     paullawrence@google.com
Cc:     agk@redhat.com, snitzer@redhat.com, dm-devel@redhat.com,
        corbet@lwn.net, shli@kernel.org, linux-doc@vger.kernel.org,
        Linux kernel <linux-kernel@vger.kernel.org>,
        linux-raid@vger.kernel.org
Content-Type: multipart/mixed; boundary="0000000000001b52d00579101e8f"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

--0000000000001b52d00579101e8f
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Paul Lawrence <paullawrence@google.com> ezt =C3=ADrta (id=C5=91pont: 2018. =
okt.
23., K, 23:27):
>
> bow =3D=3D backup on write
>
> Similar to dm-snap, add the ability to take a snapshot of a device.
> Unlike dm-snap, a separate volume is not required.
>

The concept intrigued me, so I actually went on to try your prototype.
I could apply it on v4.12 mainline (newer kernel versions introduce
changes in "struct bio" in "include/linux/blk_types.h" those don't let
the module compile =E2=80=93 I think minor changes would be necessary to ad=
apt
to the new struct, though I didn't go into that).

My test scenario:
On a KVM, I created a 64M partition and formatted it to ext4, then put
some random files on it and unmounted the FS. I then called "dmsetup
create bowdev --table "0 131072 bow /dev/vdb1"". The
"/dev/mapper/bowdev" file appeared as expected. I mounted it in
read-only mode ("mount -vo ro /dev/mapper/bowdev /mnt") and run
"fstrim -v /mnt". At this point, I tried to advance to STATE 1 ("echo
1 > /sys/block/dm-2/bow/state"), but I got a kernel BUG alert. The
STATE did not change. I unmounted bowdev and removed the device
("dmsetup remove bowdev") which resulted in 2 subsequent kernel
alerts. The device disappeared but it brought the kernel to an
unstable state (various actions, like sync or trying to recreate the
bow device, resulted in a hang). I could not get any further than
this. I attached all the 3 kernel alerts in "dm-bow.dmesg.log".

I have some questions about dm-bow:
=E2=80=93 How file system agnostic this feature is planned to be? While it =
is
designed with ext4 in mind, is it going to work when used over other
file systems, like FAT or BTRFS for example?
=E2=80=93 Especially that BTRFS uses a CoW mechanism for even overwriting
files (overwritten segments are written to a free area and only then
gets the old data freed =E2=80=93 except some specific conditions when
NO_COW/nodatacow is involved). Won't BTRFS CoW mechanism confuse BoW,
e.g. BTRFS will try to use space that BoW wants to use for backups?
Note however, using BoW on BTRFS wouldn't have much point, since BTRFS
has built-in features for snapshots. This leads me to my next
question.
=E2=80=93 Why don't you just use BTRFS on Android? It basically provides a
similar feature like BoW, and it is matured enough, switching
snapshots are easy, etc.. However I see why it wouldn't be feasible
for you, e.g. it is slower than ext4, which would matter for an
Android device.
=E2=80=93 What if you run out of free disk space while updating? I guess yo=
u
can just revert to the original state with BoW, but an update might
require more disk space with BoW (and this is a thing, my Android
always complains about not having enough space).
=E2=80=93 Can I really expect dm-bow to work on non-Android systems (like I
tried it on an Ubuntu KVM)?
=E2=80=93 Do you have any prototype for the command line utility to be used
for recovery?


MegaBrutal

--0000000000001b52d00579101e8f
Content-Type: text/x-log; charset="US-ASCII"; name="dm-bow.dmesg.log"
Content-Disposition: attachment; filename="dm-bow.dmesg.log"
Content-Transfer-Encoding: base64
Content-ID: <f_jnooge490>
X-Attachment-Id: f_jnooge490
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--0000000000001b52d00579101e8f--