| From: |
| Yehuda Sadeh <yehuda@hq.newdream.net> |
| To: |
| linux-kernel@vger.kernel.org |
| Subject: |
| [PATCH 0/6] Ceph RADOS block device |
| Date: |
| Tue, 13 Apr 2010 16:29:09 -0700 |
| Message-ID: |
| <1271201355-9346-1-git-send-email-yehuda@hq.newdream.net> |
| Cc: |
| linux-fsdevel@vger.kernel.org, yehudasa@gmail.com,
sage@newdream.net, axboe@kernel.dk,
Yehuda Sadeh <yehuda@hq.newdream.net> |
| Archive‑link: | |
Article |
The following series implements a linux rados block device. It allows
striping of data across rados, the ceph distributed block layer, and is
binary compatible with Christian Brunner's kvm-rbd implementation. Similarly
to the Sheepdog project, it stripes the block device across 4MB (or other
configurable size) objects stored by the distributed object store, and enjoys
all the rados features (high availability, scalability, etc.). Future
versions will be able to use the rados snapshots mechanism.
A use case for this device would be to have some kind of a local file system
created on it, and use it with conjuction of kvm to do migration and other
related stuff. Another option would be to use it as data devices for other
distributed file systems (e.g., ocfs2, gfs2).
The actual device driver is implemented in the last patch of the series, and
is based on osdblk. Currently, it resides under the fs/ceph tree and does not
exist as a separate module of its own, such that the ceph.ko module contains
both the ceph file system and the rbd block device. Another option would be
to have it as a separate module that resides under drivers/block, however, it
would still depend on the ceph.ko module.
Any comments, questions, suggestions are more than welcome,
Yehuda
---
fs/ceph/Makefile | 3 +-
fs/ceph/caps.c | 2 +-
fs/ceph/debugfs.c | 11 +-
fs/ceph/file.c | 56 +++-
fs/ceph/mds_client.c | 11 +-
fs/ceph/messenger.c | 185 +++++++--
fs/ceph/messenger.h | 5 +-
fs/ceph/mon_client.c | 18 +-
fs/ceph/msgpool.c | 4 +-
fs/ceph/osd_client.c | 193 ++++++---
fs/ceph/osd_client.h | 27 ++
fs/ceph/rbd.c | 1224
++++++++++++++++++++++++++++++++++++++++++++++++++
fs/ceph/rbd.h | 8 +
fs/ceph/super.c | 165 ++++++--
fs/ceph/super.h | 31 ++-
15 files changed, 1786 insertions(+), 157 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/