| Commit message (Collapse) | Author | Age | Files | Lines |
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needed to implement a proper handling of open flag alterations
using fcntl() on fd.
Change-Id: Ic280d5db6f1dc0418d5c439abb8db1d3ac21ced0
Signed-off-by: Amar Tumballi <amar@gluster.com>
BUG: 782265
Reviewed-on: http://review.gluster.com/2723
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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1. What
--------
This change introduces an infrastructure change in the filesystem
which lets filesystem operation address objects (inodes) just by its
GFID. Thus far GFID has been a unique identifier of a user-visible
inode. But in terms of addressability the only mechanism thus far has
been the backend filesystem path, which could be derived from the
GFID only if it was cached in the inode table along with the entire set
of dentry ancestry leading up to the root.
This change essentially decouples addressability from the namespace. It
is no more necessary to be aware of the parent directory to address a
file or directory.
2. Why
-------
The biggest use case for such a feature is NFS for generating
persistent filehandles. So far the technique for generating filehandles
in NFS has been to encode path components so that the appropriate
inode_t can be repopulated into the inode table by means of a recursive
lookup of each component top-down.
Another use case is the ability to perform more intelligent self-healing
and rebalancing of inodes with hardlinks and also to detect renames.
A derived feature from GFID filehandles is anonymous FDs. An anonymous FD
is an internal USABLE "fd_t" which does not map to a user opened file
descriptor or to an internal ->open()'d fd. The ability to address a file
by the GFID eliminates the need to have a persistent ->open()'d fd for the
purpose of avoiding the namespace. This improves NFS read/write performance
significantly eliminating open/close calls and also fixes some of today's
limitations (like keeping an FD open longer than necessary resulting
in disk space leakage)
3. How
-------
At each storage/posix translator level, every file is hardlinked inside
a hidden .glusterfs directory (under the top level export) with the name
as the ascii-encoded standard UUID format string. For reasons of performance
and scalability there is a two-tier classification of those hardlinks
under directories with the initial parts of the UUID string as the directory
names.
For directories (which cannot be hardlinked), the approach is to use a symlink
which dereferences the parent GFID path along with basename of the directory.
The parent GFID dereference will in turn be a dereference of the grandparent
with the parent's basename, and so on recursively up to the root export.
4. Development
---------------
4a. To leverage the ability to address an inode by its GFID, the technique is
to perform a "nameless lookup". This means, to populate a loc_t structure as:
loc_t {
pargfid: NULL
parent: NULL
name: NULL
path: NULL
gfid: GFID to be looked up [out parameter]
inode: inode_new () result [in parameter]
}
and performing such lookup will return in its callback an inode_t
populated with the right contexts and a struct iatt which can be
used to perform an inode_link () on the inode (without a parent and
basename). The inode will now be hashed and linked in the inode table
and findable via inode_find().
A fundamental change moving forward is that the primary fields in a
loc_t structure are now going to be (pargfid, name) and (gfid) depending
on the kind of FOP. So far path had been the primary field for operations.
The remaining fields only serve as hints/helpers.
4b. If read/write is to be performed on an inode_t, the approach so far
has been to: fd_create(), STACK_WIND(open, fd), fd_bind (in callback) and
then perform STACK_WIND(read, fd) etc. With anonymous fds now you can do
fd_anonymous (inode), STACK_WIND (read, fd). This results in great boost
in performance in the inbuilt NFS server.
5. Misc
-------
The inode_ctx_put[2] has been renamed to inode_ctx_set[2] to be consistent
with the rest of the codebase.
Change-Id: Ie4629edf6bd32a595f4d7f01e90c0a01f16fb12f
BUG: 781318
Reviewed-on: http://review.gluster.com/669
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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in the entire glusterfs codebase.
This patch fixes many of spell mistakes and typo in the entire
glusterfs codebase and all supported modules.
Change-Id: I83238a41aa08118df3cf4d1d605505dd3cda35a1
BUG: 3809
Signed-off-by: Harshavardhana <fharshav@redhat.com>
Reviewed-on: http://review.gluster.com/731
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Change-Id: I0f078d1753db65d2f2e0380d1b0450c114cf40dd
BUG: 3518
Reviewed-on: http://review.gluster.com/522
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Since gfid is used to uniquely identify a inode, in the statedump
printing inode number is not necessary. Its suffecient if the gfid
of the inode is printed. And do not print the the inodelks, entrylks
and posixlks if the lock count is 0.
Change-Id: Idac115fbce3a5684a0f02f8f5f20b194df8fb27f
BUG: 3476
Reviewed-on: http://review.gluster.com/530
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
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Does the following:
1. Increases cache-size limit from 6GB to 32GB.
2. Prevents 'volume set'from failing when cache-size is set over the
limit. Just issues a warning.
3. Performs check on cache-size by comparing with total system memory
available in init () and reconfigure () methods.
Change-Id: I7dd4d8c53051b89a293696abf1ee8dc237e39a20
BUG: 3495
Reviewed-on: http://review.gluster.com/409
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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- macro QR_STACK_UNWIND destroys the stub present in local and hence no need
of explicitly calling call_stub_destroy on it.
Change-Id: Ib81c9a0d382765e783722b14fdbd7877086b1bec
BUG: 3562
Reviewed-on: http://review.gluster.com/439
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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- move option handling to options.c (new file)
- remove duplication of option validation code
- remove duplication of gf_log / sprintf
- get rid of xlator_t->validate_options
- get rid of option validation in rpc-transport
- get rid of validate_options() in every xlator
- use xlator_volume_option_get to clean up many functions
- introduce primitives to init/reconfigure option types
Change-Id: I51798af72c8dc0a2b9e017424036eb3667dfc7ff
BUG: 3415
Reviewed-on: http://review.gluster.com/235
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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therefore ((flags & O_DIRECTORY) == O_DIRECTORY) is always true even
if the flag is not set.
Change-Id: Ie7837d521ea20b36ed70cf93c1763c226ff0e9f0
BUG: 2923
Reviewed-on: http://review.gluster.com/213
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Change-Id: I2d10f2be44f518f496427f257988f1858e888084
BUG: 3348
Reviewed-on: http://review.gluster.com/200
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Change-Id: I3914467611e573cccee0d22df93920cf1b2eb79f
BUG: 3348
Reviewed-on: http://review.gluster.com/182
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Rebasing Raghavendra's patch to master
Change-Id: Ie7a0c9a7b8e73cfe48c4573a5153460d5126208e
BUG: 2472
Reviewed-on: http://review.gluster.com/12
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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properly, while validating cache.
- there was a possibility of double unwind in case of errors.
- use a new frame to do open in fd-based fops.
In case of errors, qr_resume_pending_ops will be called to resume all the
fops waiting on open. Hence if we use frame corresponding to fop (without
creating a new one), there is a possibility of frame being freed by the
time open would've returned to quick-read.
Change-Id: Ie4cc19907f9d6362860bdb984779c8f4cf822332
BUG: 3168
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Reviewed-on: http://review.gluster.com/34
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Signed-off-by: Kaushik BV <kaushikbv@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 2041 (volume set help option)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2041
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 3011 (Uninterruptible processes writing(reading ? ) to/from glusterfs share)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=3011
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Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 3011 (Uninterruptible processes writing(reading ? ) to/from glusterfs share)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=3011
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Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 1059 (enhancements for getting statistics from performance translators)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1059
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glibc dirname() modify the string it is given and returns it.
glusterfs takes this behavior for granted, and assume that if it
gives a malloc'ed string to dirname(), then it can free()) the
return value.
Here is what SUSv2 says:
http://opengroup.org/onlinepubs/007908799/xsh/dirname.html
"The dirname() function may modify the string pointed to by path,
and may return a pointer to static storage"
At least NetBSD returns a static storage. glusterfs will return it to
a calling function that has the responsability to free it, causing
a SIGSEGV.
Thanks to: Emmanuel Dreyfus <manu@netbsd.org>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 2923 (NetBSD port)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2923
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Signed-off-by: Gaurav <gaurav@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2064 (NFS options are removed upon glusterd restart)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2064
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recieve -> receive
maintainence -> maintenance
verison -> version
commited -> committed
Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2262 (Spelling errors in source)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2262
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Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
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- If open fails and there are any other fops waiting on that open, those fops
should also unwind with appropriate errors. Before this patch, irrespective
of success/failure of open, fops waiting on it were stack_wound and since
fd was invalid, they would fail with EBADFD errors. Due to this
actual error would've got masked by EBADFD.
Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
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guidelines.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
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Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2240 (Solaris client hangs on file read operations)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2240
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fails.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2274 (crash in fd_unref)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2274
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invocation of gf_log.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2211 ((re)introduce warnings for format string/parameter mismatch)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2211
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fop needs to do open before continuing.
- without need_unwind set, 'goto out' will result in infinite loop.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2075 (inode_from_path silently consumes 99% CPU causing nfs client disconnects)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2075
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2027 (Updates not happening with replication)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2027
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2027 (Updates not happening with replication)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2027
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971
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- performance.flush-behind, transport.keepalive added
- volume info to display the options reconfigured
Signed-off-by: Kaushik BV <kaushikbv@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 1159 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1159
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Signed-off-by: Kaushik BV <kaushikbv@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 1159 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1159
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Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 1388 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1388
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Signed-off-by: Pavan Vilas Sondur <pavan@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 865 (Add locks recovery support in GlusterFS)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=865
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Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 1438 (memory leaks)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1438
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- preallocate buffers in client and pass them to transport layer whenever a
large response is expected.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 513 (Introduce 0 copy rdma)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=513
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Signed-off-by: Sachidananda Urs <sac@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 1109 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1109
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Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 1059 (enhancements for getting statistics from performance translators)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1059
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Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 1059 (enhancements for getting statistics from performance translators)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1059
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Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 1059 (enhancements for getting statistics from performance translators)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1059
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Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 329 (Replacing memory allocation functions with mem-type functions)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=329
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Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 723 (enhancements to quick read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723
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- size-to-be pruned used to be a negative number because of cache-used being
subtracted from configured cache-limit (with cache-used > cache-limit).
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 980 (quick read - fetching from backend issue)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=980
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Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 723 (enhancements to quick read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723
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Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 723 (enhancements to quick read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723
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Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
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just after validation.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 852 (QR cache-timeout 0 causes high CPU usage and app hangs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=852
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Memory accounting Changes. Thanks to Vinayak Hegde and Csaba Henk for their
contributions.
Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 329 (Replacing memory allocation functions with mem-type functions)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=329
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O_DIRECT flag.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 723 (enhancements to quick read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723
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