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* md-cache: replace stat-prefetch with md-cache in a backward compatible wayAnand Avati2012-02-201-4268/+0
| | | | | | | | | | | - preserve CLI set option key as "performance.stat-prefetch" - create a symlink stat-prefetch.so to point to md-cache.so Change-Id: Ib95e7c30073f13ae04c39e9466967ba1db5a0614 BUG: 765785 Reviewed-on: http://review.gluster.com/2714 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* core: add an extra flag to readv()/writev() APIAmar Tumballi2012-02-141-4/+4
| | | | | | | | | | | | 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>
* performanc/stat-prefetch: check if loc->gfid is present before checking ↵Raghavendra Bhat2012-02-021-5/+10
| | | | | | | | | | | | | | | | | | loc->name After gfid based backend changes loc will either contain the gfid of the inode or it will contain the parent gfid and the name of the entry. So before unwinding when loc->name is not there we have to check if loc->gfid is present or not. If loc->gfid is null and loc->name is also NULL, then unwind with the error. Change-Id: If88b9462bde09a80e79f27899c995605697ce453 BUG: 785675 Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Reviewed-on: http://review.gluster.com/2710 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amar@gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* core: get xattrs also as part of readdirpAmar Tumballi2012-01-251-4/+10
| | | | | | | | | | | | | readdirp_req() call sends a dict_t * as an argument, which contains all the xattr keys for which the entries got in readdirp_rsp() are having xattr value filled dictionary. Change-Id: I8b7e1290740ea3e884e67d19156ce849227167c0 Signed-off-by: Amar Tumballi <amar@gluster.com> BUG: 765785 Reviewed-on: http://review.gluster.com/771 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* core: GFID filehandle based backend and anonymous FDsAnand Avati2012-01-201-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* core: remove 'ino' variable from 'inode_t' structureAmar Tumballi2011-11-161-92/+56
| | | | | | | | 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>
* statedump: do not print the inode number in the statedumpRaghavendra Bhat2011-10-011-32/+12
| | | | | | | | | | | | | 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>
* performance/stat-prefetch: fix memory leakRaghavendra G2011-08-231-1/+8
| | | | | | | | Change-Id: I84580e297ba93a9a093c2e3432ea52e3c0db4a1a BUG: 3467 Reviewed-on: http://review.gluster.com/307 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* Change Copyright current yearPranith Kumar K2011-08-101-1/+1
| | | | | | | | 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>
* LICENSE: s/GNU Affero General Public/GNU General Public/Pranith Kumar K2011-08-061-3/+3
| | | | | | | | 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>
* performance/stat-prefetch: dump cache and list of ops waiting for lookup ↵Raghavendra G2011-06-141-0/+178
| | | | | | | | | | completion. 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
* performance/stat-prefetch: return ESTALE if inode's gfid is not the same as ↵Raghavendra G2011-05-311-0/+9
| | | | | | | | | | cached gfid for a path. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand Avati <avati@gluster.com> BUG: 2927 (Mismatched link/target gfid and ESTALE/ENOENT) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2927
* stat-prefetch: fix dirname(3) usageAnand Avati2011-05-301-2/+8
| | | | | | | | | | | | | | | | | | | | | | | 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
* remove excessive logs due to log enhancementAmar Tumballi2011-04-131-1/+2
| | | | | | | | Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand Avati <avati@gluster.com> BUG: 2346 (Log message enhancements in GlusterFS - phase 1) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
* performance/stat-prefetch: logging enhancementsAmar Tumballi2011-03-171-417/+813
| | | | | | | | 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
* performance/stat-prefetch: whitespace related changes to adhere to coding ↵Raghavendra G2011-03-171-177/+162
| | | | | | | | | | | 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
* check the op_ret for less than zero in sp_create_cbk since posix can send ↵Raghavendra Bhat2011-02-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | negative values other than -1 posix can send -ve values other than -1 in create: op_ret = setgid_override (this, real_path, &gid); if (op_ret < 0) { goto out; } In stat-prefetch we check op_ret only for -1 which results in function proceeding and op_ret may become 0 due to other function calls in sp_create_cbk, hence crashes in fuse. Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 2409 (crash in stat prefetch) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2409
* check the value of op_ret pointer not the addressRaghavendra Bhat2011-01-071-1/+1
| | | | | | | | Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 221 (stat prefetch implementation) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=221
* stat-prefetch: changes to incorporate gfidv3.1.1qa11Anand Avati2010-11-251-1/+7
| | | | | | | | Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 2136 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2136
* Possible race condition between cleanup and dereferencingshishir gowda2010-10-081-1/+2
| | | | | | | | Signed-off-by: shishir gowda <shishirng@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1760 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1760
* Change GNU GPL to GNU AGPLPranith K2010-10-041-3/+3
| | | | | | | | 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
* stat-prefetch: reduce the stat-prefetch mem-pool sizeAmar Tumballi2010-10-041-1/+1
| | | | | | | | | | | | because we are not calling 'fini()' on old graph, after every graph change, we are leaking lot of memory. Hence reduce the foot-print for now, bring in changes to call 'fini()' later. Signed-off-by: Amar Tumballi <amar@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
* rmdir: introduce extra flags parameter in FOP prototypeAnand V. Avati2010-10-021-7/+7
| | | | | | | | Signed-off-by: Anand V. Avati <avati@amp.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
* Changes to replace flock with gf_flock across GlusterFS.Pavan Sondur2010-10-011-2/+2
| | | | | | | | 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
* gfid: changes in symlink() prototype to have params dictionary with uuid in itAnand Avati2010-09-041-3/+3
| | | | | | | | | Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@amp.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
* gfid: changes in mkdir() prototype to have params dictionary with uuid in itAnand Avati2010-09-041-3/+4
| | | | | | | | | Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@amp.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
* gfid: changes in mknod() prototype to have params dictionary with uuid in itAnand Avati2010-09-041-3/+4
| | | | | | | | | Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@amp.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
* gfid: change in create() prototype to have params dictionary with uuid in itAnand Avati2010-09-041-2/+2
| | | | | | | | | Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@amp.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
* dump total entries cached in stat-prefetch to state-dump fileRaghavendra Bhat2010-09-021-1/+78
| | | | | | | | Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Signed-off-by: Vijay Bellur <vijay@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
* performance/stat-prefetch: while removing an entry from cache, remove it ↵Raghavendra G2010-08-281-141/+108
| | | | | | | | | | from caches stored in all opened fds. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1414 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1414
* performance/stat-prefetch: use SP_STACK_UNWIND instead of STACK_UNWIND_STRICT.Raghavendra G2010-08-211-2/+2
| | | | | | | | Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 993 (memory leak-in stat-prefetch) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=993
* Remove dead variables.Sachidananda2010-08-021-2/+1
| | | | | | | | Signed-off-by: Sachidananda Urs <sac@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 1106 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1106
* performance/stat-prefetch convert STACK_UNWIND TO STACK_UNWIND_STRICTshishir gowda2010-07-201-2/+2
| | | | | | | | Signed-off-by: shishir gowda <shishirng@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 269 (Add a specialized STACK_UNWIND macro for each FOP) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=269
* removed 'fop->checksum' from codebase as its not required anymoreAmar Tumballi2010-07-061-98/+0
| | | | | | | | Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 734 (keep only the working/usable code in build tree to focus more on development) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=734
* NULL dereference fixes in code base after running with 'clang'Amar Tumballi2010-07-021-2/+3
| | | | | | | | | | | | * 212 logical (NULL deref/divide by zero) errors reduced to 28 (27 of them in contrib/ and lex part of codebase, 1 is invalid) * 11 API errors reduced to 0 Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 966 (NULL check for avoiding NULL dereferencing of pointers..) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=966
* crash fixed in stat-prefetch.cPradeep Patil2010-05-031-1/+1
| | | | | | | | Signed-off-by: Pradeep Patil <pradeep@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 876 (crash in stat-prefetch) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=876
* frame's 'op', 'type' restructuredAmar Tumballi2010-05-031-3/+0
| | | | | | | | 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
* stat-prefetch: Remove checks for loc->parentShehjar Tikoo2010-04-231-32/+0
| | | | | | | | | | | | ..because loc->parent can be NULL for the root inode. Having this check makes sp return EINVAL on perfectly valid fops. Signed-off-by: Shehjar Tikoo <shehjart@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 845 (NFS BETA Test - Test Case 1: 4dist-repl-chown1m) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=845
* Memory accounting changesVijay Bellur2010-04-231-32/+52
| | | | | | | | | | | 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
* fop namespace cleanup.Amar Tumballi2010-03-311-134/+0
| | | | | | | | | | | | removed 'lock_notify', 'lock_fnotify', 'setdents', 'getdents' from 'fop' list, and removed 'stats' from mop list, as they are no more used in the codebase, and had made code bulky/buggy. Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 734 (keep only the working/usable code in build tree to focus more on development) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=734
* iatt: changes across the codebaseAnand V. Avati2010-03-161-28/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - libglusterfs -- call-stub -- inode -- protocol - libglusterfsclient - cluster/replicate - cluster/{dht,nufa,switch} - cluster/unify - cluster/HA - cluster/map - cluster/stripe - debug/error-gen - debug/trace - debug/io-stats - encryption/rot-13 - features/filter - features/locks - features/path-converter - features/quota - features/trash - mount/fuse - performance/io-threads - performance/io-cache - performance/quick-read - performance/read-ahead - performance/stat-prefetch - performance/symlink-cache - performance/write-behind - protocol/client - protocol/server - storage-posix Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 361 (GlusterFS 3.0 should work on Mac OS/X) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=361
* performance/stat-prefetch: remove the usage of THIS.Raghavendra G2009-12-061-1/+2
| | | | | | | | Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 221 (stat prefetch implementation) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=221
* performance/stat-prefetch: fix memory leak.Raghavendra G2009-12-061-1/+4
| | | | | | | | | | | - rbt_hash_remove only removes entry from the hash table. It does not free the data. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 438 (Memory leak) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=438
* performance/stat-prefetch: don't check whether previous lookups have been ↵Raghavendra G2009-12-051-9/+0
| | | | | | | | | | | | | | | | | | | | failed in sp_process_inode_ctx. We need this patch for following reasons: 1. The inode used in the successful lookup call may not be the one passed to fops operating on path. This may happen, if revalidate of inode is failed, but the lookup itself succeeds (in case of reavalidate failures, fuse sends a fresh lookup using new inode) and since inode_link, if there is an inode already associated with a path retains it. 2. Only fops that "wait" in stat-prefetch for a lookup which is already in progress, need to check for the result of the lookup they are waiting on, before resuming and sp_process_inode_ctx is _not_ used in such contexts. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 428 (looks like stat cache not upto date..) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=428
* performance/stat-prefetch: add "caller" arguement to sp_process_inode_ctx.Raghavendra G2009-12-041-21/+37
| | | | | | | | | | | - since sp_process_inode_ctx is called by many fops, if the context is not set "caller" argument can be logged in log msgs to identify caller. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 221 (stat prefetch implementation) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=221
* performance/stat-prefetch: implement sp_check_and_create_inode_ctx.Raghavendra G2009-12-041-161/+122
| | | | | | | | Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 221 (stat prefetch implementation) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=221
* performance/stat-prefetch: refactor sp_lookup_cbk to use sp_update_inode_ctx.Raghavendra G2009-12-041-29/+10
| | | | | | | | Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 221 (stat prefetch implementation) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=221
* performance/stat-prefetch: dont check for inode context in fops like create, ↵Raghavendra G2009-12-041-259/+262
| | | | | | | | | | | | | mkdir. - context will not be set as a fresh inode is passed in each of these calls. instead create a new context. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 221 (stat prefetch implementation) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=221
* performance/stat-prefetch: don't access stat if lookup has been failed.Raghavendra G2009-12-031-1/+1
| | | | | | | | Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 429 (crash in lookup_cbk when lookup returns with error) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=429
* performance/stat-prefetch: get inode context from local->loc.inode instead ↵Raghavendra G2009-12-021-4/+9
| | | | | | | | | | | | of inode passed as arguement in sp_lookup_cbk. - @inode in sp_lookup_cbk may be NULL in case of failure of lookup. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 426 (stat on mount point hangs.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=426
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