| Commit message (Collapse) | Author | Age |
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Update compression types supported and add some help text for
the LZO Kconfig option.
Also add missing "default n" line and make some trivial whitespace
cleanups too.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Sizing the buffer using block size alone is incorrect leading
to a potential buffer over-run on 4K block size file systems
(because the metadata block size is always 8K). Srclength is
set to the maximum expected size of the decompressed block and
it is block_size or 8K depending on whether a data or metadata
block is being decompressed.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Signed-off-by: Chan Jeong <chan.jeong@lge.com>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Fix compiler warning where inline conflicts with non-inline
prototype.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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* 'for-linus' of git://git.open-osd.org/linux-open-osd:
exofs: Fix groups code when num_devices is not divisible by group_width
exofs: Remove useless optimization
exofs: exofs_file_fsync and exofs_file_flush correctness
exofs: Remove superfluous dependency on buffer_head and writeback
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There is a bug when num_devices is not divisible by group_width * mirrors.
We would not return to the proper device and offset when looping on to the
next group.
The fix makes code simpler actually.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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We used to compact all used devices in an IO to the beginning
of the device array in an io_state. And keep a last device used
so in later loops we don't iterate on all device slots. This
does not prevent us from checking if slots are empty since in
reads we only read from a single mirror and jump to the next
mirror-set.
This optimization is marginal, and needlessly complicates the
code. Specially when we will later want to support raid/456
with same abstract code. So remove the distinction between
"dev" and "comp". Only "dev" is used both as the device used
and as the index (component) in the device array.
[Note that now the io_state->dev member is redundant but I
keep it because I might want to optimize by only IOing a
single group, though keeping a group_width*mirrors devices
in io_state, we now keep num-devices in each io_state]
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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As per Christoph advise: no need to call filemap_write_and_wait().
In exofs all metadata is at the inode so just writing the inode is
all is needed. ->fsync implies this must be done synchronously.
But now exofs_file_fsync can not be used by exofs_file_flush.
vfs_fsync() should do that job correctly.
FIXME: remove the sb_sync and fix that sb_update better.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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exofs_releasepage && exofs_invalidatepage are never called.
Leave the WARN_ONs but remove any code. Remove the
cleanup other stale #includes.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (39 commits)
ceph: generalize mon requests, add pool op support
ceph: only queue async writeback on cap revocation if there is dirty data
ceph: do not ignore osd_idle_ttl mount option
ceph: constify dentry_operations
ceph: whitespace cleanup
ceph: add flock/fcntl lock support
ceph: define on-wire types, constants for file locking support
ceph: add CEPH_FEATURE_FLOCK to the supported feature bits
ceph: support v2 reconnect encoding
ceph: support v2 client_caps encoding
ceph: move AES iv definition to shared header
ceph: fix decoding of pool snap info
ceph: make ->sync_fs not wait if wait==0
ceph: warn on missing snap realm
ceph: print useful error message when crush rule not found
ceph: use %pU to print uuid (fsid)
ceph: sync header defs with server code
ceph: clean up header guards
ceph: strip misleading/obsolete version, feature info
ceph: specify supported features in super.h
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Generalize the current statfs synchronous requests, and support pool_ops.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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Normally, if the Fb cap bit is being revoked, we queue an async writeback.
If there is no dirty data but we still hold the cap, this leaves the
client sitting around doing nothing until the cap timeouts expire and the
cap is released on its own (as it would have been without the revocation).
Instead, only queue writeback if the bit is actually used (i.e., we have
dirty data). If not, we can reply to the revocation immediately.
Signed-off-by: Sage Weil <sage@newdream.net>
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Actually apply the mount option to the mount_args struct.
Signed-off-by: Sage Weil <sage@newdream.net>
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This makes checkpatch happy.
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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Implement flock inode operation to support advisory file locking. All
lock/unlock operations are synchronous with the MDS. Lock state is
sent when reconnecting to a recovering MDS to restore the shared lock
state.
Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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Define the MDS operations and data types for doing file advisory locking
with the MDS.
Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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This informs the server that we will accept v2 client_caps format and v2
client_reconnect format messages.
Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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Encode either old or v2 encoding of client_reconnect message, depending on
whether the peer has the FLOCK feature bit.
Signed-off-by: Sage Weil <sage@newdream.net>
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Add support for v2 encoding of MClientCaps, which includes a flock blob.
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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The pool info contains a vector for snap_info_t, not snap ids. This fixes
the broken decoding, which would declare teh update corrupt when a pool
snapshot was created.
Signed-off-by: Sage Weil <sage@newdream.net>
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The ->sync_fs() super op only needs to wait if wait is true. Otherwise,
just get some dirty cap writeback started.
Signed-off-by: Sage Weil <sage@newdream.net>
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Well, this Shouldn't Happen, so it would be helpful to know the caller when
it does.
Signed-off-by: Sage Weil <sage@newdream.net>
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Include the crush_ruleset in the error message.
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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Define ROLLBACK op, IFLOCK inode lock (for advisory file locking).
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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Specify the supported/required feature bits in super.h client code instead
of using the definitions from the shared kernel/userspace headers (which
will go away shortly).
Signed-off-by: Sage Weil <sage@newdream.net>
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Specify the fsid mount option in hex, not via the major/minor u64 hackery we had
before.
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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When we get a cap EXPORT message, make sure we are connected to all export
targets to ensure we can handle the matching IMPORT.
Signed-off-by: Sage Weil <sage@newdream.net>
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If an MDS we are talking to may have failed, we need to open sessions to
its potential export targets to ensure that any in-progress migration that
may have involved some of our caps is properly handled.
Signed-off-by: Sage Weil <sage@newdream.net>
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There are a few cases where we need to open sessions with a given mds's
potential export targets.
Signed-off-by: Sage Weil <sage@newdream.net>
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Setting it elsewhere is unnecessary and more fragile.
Signed-off-by: Sage Weil <sage@newdream.net>
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Caps related accounting is now being done per mds client instead
of just being global. This prepares ground work for a later revision
of the caps preallocated reservation list.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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Mainly fixing minor issues reported by sparse.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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If we have a capsnap but no auth cap (e.g. because it is migrating to
another mds), bail out and do nothing for now. Do NOT remove the capsnap
from the flush list.
Signed-off-by: Sage Weil <sage@newdream.net>
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The caps revocation should either initiate writeback, invalidateion, or
call check_caps to ack or do the dirty work. The primary question is
whether we can get away with only checking the auth cap or whether all
caps need to be checked.
The old code was doing...something else. At the very least, revocations
from non-auth MDSs could break by triggering the "check auth cap only"
case.
Signed-off-by: Sage Weil <sage@newdream.net>
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No functional change, aside from more useful debug output.
Signed-off-by: Sage Weil <sage@newdream.net>
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Signed-off-by: Sage Weil <sage@newdream.net>
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If the file mode is marked as "lazy," perform cached/buffered reads when
the caps permit it. Adjust the rdcache_gen and invalidation logic
accordingly so that we manage our cache based on the FILE_CACHE -or-
FILE_LAZYIO cap bits.
Signed-off-by: Sage Weil <sage@newdream.net>
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If we have marked a file as "lazy" (using the ceph ioctl), perform buffered
writes when the MDS caps allow it.
Signed-off-by: Sage Weil <sage@newdream.net>
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Allow an application to mark a file descriptor for lazy file consistency
semantics, allowing buffered reads and writes when multiple clients are
accessing the same file.
Signed-off-by: Sage Weil <sage@newdream.net>
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