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Subject[GIT PULL] Ceph distributed file system client for 2.6.33
Hi Linus,

Please pull from 'master' branch of

git:// master

to receive the Ceph distributed file system client. The fs has made a
half dozen rounds on linux-fsdevel, and has been in linux-next for the
last month or so. Although review has been sparse, Andrew said the code
looks reasonable for 2.6.33.

The git tree includes the full patchset posted in October and incremental
changes since then. I've tried to cram in all the anticipated protocol
changes, but the file system is still strictly EXPERIMENTAL and is marked
as such. Merging now will attract new eyes and make it easier to test and
evaluate the system (both the client and server side).

Basic features include:

* High availability and reliability. No single points of failure.
* Strong data and metadata consistency between clients
* N-way replication of all data across storage nodes
* Seamless scaling from 1 to potentially many thousands of nodes
* Fast recovery from node failures
* Automatic rebalancing of data on node addition/removal
* Easy deployment: most FS components are userspace daemons

More info on Ceph at


Julia Lawall (2):
fs/ceph: introduce missing kfree
fs/ceph: Move a dereference below a NULL test

Noah Watkins (3):
ceph: replace list_entry with container_of
ceph: remove redundant use of le32_to_cpu
ceph: fix intra strip unit length calculation

Sage Weil (93):
ceph: documentation
ceph: on-wire types
ceph: client types
ceph: ref counted buffer
ceph: super.c
ceph: inode operations
ceph: directory operations
ceph: file operations
ceph: address space operations
ceph: MDS client
ceph: OSD client
ceph: CRUSH mapping algorithm
ceph: monitor client
ceph: capability management
ceph: snapshot management
ceph: messenger library
ceph: message pools
ceph: nfs re-export support
ceph: ioctls
ceph: debugfs
ceph: Kconfig, Makefile
ceph: document shared files in README
ceph: show meaningful version on module load
ceph: include preferred_osd in file layout virtual xattr
ceph: gracefully avoid empty crush buckets
ceph: fix mdsmap decoding when multiple mds's are present
ceph: renew mon subscription before it expires
ceph: fix osd request submission race
ceph: revoke osd request message on request completion
ceph: fail gracefully on corrupt osdmap (bad pg_temp mapping)
ceph: reset osd session on fault, not peer_reset
ceph: cancel osd requests before resending them
ceph: update to mon client protocol v15
ceph: add file layout validation
ceph: ignore trailing data in monamp
ceph: remove unused CEPH_MSG_{OSD,MDS}_GETMAP
ceph: add version field to message header
ceph: convert encode/decode macros to inlines
ceph: initialize sb->s_bdi, bdi_unregister after kill_anon_super
ceph: move generic flushing code into helper
ceph: flush dirty caps via the cap_dirty list
ceph: correct subscribe_ack msgpool payload size
ceph: warn on allocation from msgpool with larger front_len
ceph: move dirty caps code around
ceph: enable readahead
ceph: include preferred osd in placement seed
ceph: v0.17 of client
ceph: move directory size logic to ceph_getattr
ceph: remove small mon addr limit; use CEPH_MAX_MON where appropriate
ceph: reduce parse_mount_args stack usage
ceph: silence uninitialized variable warning
ceph: fix, clean up string mount arg parsing
ceph: allocate and parse mount args before client instance
ceph: correct comment to match striping calculation
ceph: fix object striping calculation for non-default striping schemes
ceph: fix uninitialized err variable
crush: always return a value from crush_bucket_choose
ceph: init/destroy bdi in client create/destroy helpers
ceph: use fixed endian encoding for ceph_entity_addr
ceph: fix endian conversions for ceph_pg
ceph: fix sparse endian warning
ceph: convert port endianness
ceph: clean up 'osd%d down' console msg
ceph: make CRUSH hash functions non-inline
ceph: use strong hash function for mapping objects to pgs
ceph: make object hash a pg_pool property
ceph: make CRUSH hash function a bucket property
ceph: do not confuse stale and dead (unreconnected) caps
ceph: separate banner and connect during handshake into distinct stages
ceph: remove recon_gen logic
ceph: exclude snapdir from readdir results
ceph: initialize i_size/i_rbytes on snapdir
ceph: pr_info when mds reconnect completes
ceph: build cleanly without CONFIG_DEBUG_FS
ceph: fix page invalidation deadlock
ceph: remove bad calls to ceph_con_shutdown
ceph: remove unnecessary ceph_con_shutdown
ceph: handle errors during osd client init
ceph: negotiate authentication protocol; implement AUTH_NONE protocol
ceph: move mempool creation to ceph_create_client
ceph: small cleanup in hash function
ceph: fix debugfs entry, simplify fsid checks
ceph: decode updated mdsmap format
ceph: reset requested max_size after mds reconnect
ceph: reset msgr backoff during open, not after successful handshake
ceph: remove dead code
ceph: remove useless IS_ERR checks
ceph: plug leak of request_mutex
ceph: whitespace cleanup
ceph: hide /.ceph from readdir results
ceph: allow preferred osd to be get/set via layout ioctl
ceph: update MAINTAINERS entry with correct git URL
ceph: mark v0.18 release

Yehuda Sadeh (1):
ceph: mount fails immediately on error

Documentation/filesystems/ceph.txt | 139 ++
Documentation/ioctl/ioctl-number.txt | 1 +
fs/Kconfig | 1 +
fs/Makefile | 1 +
fs/ceph/Kconfig | 26 +
fs/ceph/Makefile | 37 +
fs/ceph/README | 20 +
fs/ceph/addr.c | 1115 +++++++++++++
fs/ceph/auth.c | 225 +++
fs/ceph/auth.h | 77 +
fs/ceph/auth_none.c | 120 ++
fs/ceph/auth_none.h | 28 +
fs/ceph/buffer.c | 34 +
fs/ceph/buffer.h | 55 +
fs/ceph/caps.c | 2863 ++++++++++++++++++++++++++++++++
fs/ceph/ceph_debug.h | 37 +
fs/ceph/ceph_frag.c | 21 +
fs/ceph/ceph_frag.h | 109 ++
fs/ceph/ceph_fs.c | 74 +
fs/ceph/ceph_fs.h | 648 ++++++++
fs/ceph/ceph_hash.c | 118 ++
fs/ceph/ceph_hash.h | 13 +
fs/ceph/ceph_strings.c | 176 ++
fs/ceph/crush/crush.c | 151 ++
fs/ceph/crush/crush.h | 180 ++
fs/ceph/crush/hash.c | 149 ++
fs/ceph/crush/hash.h | 17 +
fs/ceph/crush/mapper.c | 596 +++++++
fs/ceph/crush/mapper.h | 20 +
fs/ceph/debugfs.c | 450 +++++
fs/ceph/decode.h | 159 ++
fs/ceph/dir.c | 1222 ++++++++++++++
fs/ceph/export.c | 223 +++
fs/ceph/file.c | 904 +++++++++++
fs/ceph/inode.c | 1624 +++++++++++++++++++
fs/ceph/ioctl.c | 160 ++
fs/ceph/ioctl.h | 40 +
fs/ceph/mds_client.c | 2976 ++++++++++++++++++++++++++++++++++
fs/ceph/mds_client.h | 327 ++++
fs/ceph/mdsmap.c | 170 ++
fs/ceph/mdsmap.h | 54 +
fs/ceph/messenger.c | 2103 ++++++++++++++++++++++++
fs/ceph/messenger.h | 253 +++
fs/ceph/mon_client.c | 751 +++++++++
fs/ceph/mon_client.h | 115 ++
fs/ceph/msgpool.c | 181 ++
fs/ceph/msgpool.h | 27 +
fs/ceph/msgr.h | 167 ++
fs/ceph/osd_client.c | 1364 ++++++++++++++++
fs/ceph/osd_client.h | 150 ++
fs/ceph/osdmap.c | 916 +++++++++++
fs/ceph/osdmap.h | 124 ++
fs/ceph/rados.h | 370 +++++
fs/ceph/snap.c | 887 ++++++++++
fs/ceph/super.c | 984 +++++++++++
fs/ceph/super.h | 895 ++++++++++
fs/ceph/types.h | 29 +
fs/ceph/xattr.c | 842 ++++++++++
59 files changed, 25527 insertions(+), 0 deletions(-)

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