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* geo-rep / gsyncd: fixes to communication with child processesCsaba Henk2012-07-161-7/+11
| | | | | | | | | | | | due to not using the proper Python keyword, errhandler thread was possible to run into empty select Signed-off-by: Csaba Henk <csaba@redhat.com> BUG: 764678 Change-Id: I3c39e718e72545c27d50fd73aa6daf54062331b0 Reviewed-on: http://review.gluster.com/3562 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* NetBSD build fixesEmmanuel Dreyfus2012-07-131-0/+4
| | | | | | | | | | | This is a backport of Change-Id: Icd7290f1e340675d763665a0d0c5f95bc14e0c55 BUG: 764655 Change-Id: Iaca3dc30e61c0864af673b90d2a7fdea6a3143cc Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.com/3577 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* geo-rep / gsyncd: sanitize error log of external commandsCsaba Henk2012-07-081-2/+10
| | | | | | | | | | | | | | If a command invoked by gsyncd fails, gsyncd makes a log of what comes out on its stderr. So far the log indeterministically broke lines at random places. Now put some effort into reconstructing original lines and having a faithful log. BUG: 764678 Change-Id: I16fcc75d3e0f624c10c71d9b37c937ca677087cc Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3563 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* NetBSD build fixes.Emmanuel Dreyfus2012-07-052-0/+3
| | | | | | | | | | | This is a backport of Change-Id: Ib8183d4b585465d05a7adf3a4ceae93ae1bded15 BUG: 764655 Change-Id: I552b87b72c234b3a11af6ffd4a03975879602363 Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.com/3574 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* geo-rep / gsyncd: fix cleanup of temporary mountsCsaba Henk2012-06-101-17/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [This is a "forward port" of fafd5c17, http://review.gluster.com/2908] The "finally" clause that was meant to cleanup after the temp mount has not covered the case of getting signalled (eg. by monitor, upon worker timing out). So here we "outsource" the cleanup to an ephemeral child process. Child calls setsid(2) so it won't be bothered by internal process management. We use a pipe in between worker and the cleanup child; when child sees the worker end getting closed, it performs the cleanup. Worker end can get closed either because worker closes it (normal case), or because worker has terminated (faulty case) -- thus as bonus, we get a nice uniform handling with no need to differentiate between normal and faulty cases. The faulty case that was seen IRL -- ie., users of maintainance mounts hang in chdir(2) to mount point -- can be simulated for testing purposes by applying the following patch: diff --git a/xlators/mount/fuse/src/fuse-bridge.c b/xlators/mount/fuse/src/fuse-bridge.c index acd3c68..1ce5dc1 100644 --- a/xlators/mount/fuse/src/fuse-bridge.c +++ b/xlators/mount/fuse/src/fuse-bridge.c @@ -2918,7 +2918,7 @@ fuse_init (xlator_t *this, fuse_in_header_t *finh, void *msg) if (fini->minor < 9) *priv->msg0_len_p = sizeof(*finh) + FUSE_COMPAT_WRITE_IN_SIZE; #endif - ret = send_fuse_obj (this, finh, &fino); + ret = priv->client_pid_set ? 0 : send_fuse_obj (this, finh, &fino); if (ret == 0) gf_log ("glusterfs-fuse", GF_LOG_INFO, "FUSE inited with protocol versions:" Change-Id: I14bad56a60a7fa82d0104fa4b9a20f4e42a7186f BUG: 786291 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3542 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep / gsyncd: add "--super" to rsync invocationCsaba Henk2012-05-272-2/+1
| | | | | | | | | | | | | | | | | | | | | | This forces rsync to perform supposedly privileged operations on unprivileged slaves (like chown(2)). For consistent behavior (with gsyncd's "chown" RPC call that's being used for symlinks and directories), we also pass "--numeric-ids" to rsync. Also took the chance to retire gsyncd's "--rsync-extra" option which was there for debugging purposes (related to a resolved issue). Change-Id: I4ee4d0d3a8c4e0f6746d34d7722c8a567a67491c BUG: 822121 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3426 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.com/3453 Reviewed-by: Vijay Bellur <vijay@gluster.com>
* features/marker: use the gfid from the stat structure instead of inodeRaghavendra Bhat2012-05-231-1/+6
| | | | | | | | | | | | | | | in fresh lookup, the inode would not have linked to the inode table until the fop reaches back to protocol/server, thus it would not contain the gfid within it (gfid would still be null). So use the stat structure to get the gfid in lookup callback instead of inode's gfid. Change-Id: Id70277f0228f3db64b05d613108cfb4f070197e6 BUG: 791087 Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Reviewed-on: http://review.gluster.com/3400 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep / gsyncd: typo fixCsaba Henk2012-05-231-1/+1
| | | | | | | | | | | | fix topy. Change-Id: I84df3e850dd24d9e86713dfa401c603a84a81ca6 BUG: 763302 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3375 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com> Reviewed-on: http://review.gluster.com/3407
* geo-rep / gsyncd: recognize ECONNABORTED as termination of aux glusterfsCsaba Henk2012-05-231-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't dump stack, rather log the "glusterfs session went down" message. If the aux glusterfs is already dead when we try to do some file operation, we get a failure with ENOTCONN, which is already handled as above. However, it's also possible that glusterfs dies while we are in a syscall into it -- in that case we get ECONNABORTED, and so far then we end up with an ugly stack strace. From now on we take ECONNABORTAD as well into consideration. Nb. wrt. testing: it's not easy to synthetically force the aux glusterfs to end this way; for that we have to provoke gsyncd into intensive synchronization. I succeeded in that with the following ruby oneliner: ruby -rcgi -e ' Dir.chdir($*[0]) a=[] Thread.new { loop { while a.size >= 100; File.delete a.shift; end; sleep 1 }} loop { a<<CGI.escape(STDIN.read 10); open(a[-1], "w") {}}' MTPT < /dev/urandom where the geo-rep master is mounted at MTPT. With this going on, deliver a SIGKILL to the geo-rep session's aux glusterfs. (It is giving ECONNABORTED non-deterministically, actually in the minority of cases.) Change-Id: I24fd8d0295cdba91d8b994057a1255ca8e2d1a67 BUG: 764510 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3078 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Vijay Bellur <vijay@gluster.com> Reviewed-on: http://review.gluster.com/3408
* geo-rep / gsyncd: fixes regarding the command invocation frameworkCsaba Henk2012-05-222-9/+25
| | | | | | | | | | | | | | | | | | Some of the bugs to fix were found by the following stress-test: make "glusterfs --client-pid=-1" exit immediately on slave side. Also fix eintr_wrap which should not "adopt" exceptions generated by the wrapped call, by re-raising them as GsyncdError. Change-Id: Ia0d39e0635975ebbbf98d86e1e26f3122e1ed6ff BUG: 764678 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3258 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.com/3409 Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep / gsyncd.c: fix coverity fixCsaba Henk2012-05-222-86/+36
| | | | | | | | | | | | | | | | | | gsyncd wrapper was segfaulting as coverity fix freed up pointer at wrong place (after it was reused) Instead of the apporach of the original coverity fix that added elaborate control flow to hunt down potential leaks, here we move the code over to static allocations in place of (the not really necessary) dynamic ones. Change-Id: Ida3855ff4a4f4371b350d27f858f129ceed51785 BUG: 789278 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3345 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com> Reviewed-on: http://review.gluster.com/3405
* geo-replication: coverity resource leak fixesAmar Tumballi2012-05-092-14/+64
| | | | | | | | | Change-Id: I5739e9c9ae6fe78a6defb640d630e5f918ac1295 Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 789278 Reviewed-on: http://review.gluster.com/3266 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* features/marker: fix possible NULL access in strcmp()Amar Tumballi2012-04-161-3/+9
| | | | | | | | | | | | | for a given setxattr call, loc->path can be NULL now, handle that case properly Change-Id: Ic56ec81aa8eb62aafdb524bf22f6d84390ab1d4b Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 812767 Reviewed-on: http://review.gluster.com/3154 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* glusterd/rebalance: Start process with xlator option client-pid -3shishir gowda2012-04-161-1/+2
| | | | | | | | | | | | | This would prevent updation of xtime by the marker. Signed-off-by: shishir gowda <shishirng@gluster.com> Change-Id: I11e287511026326271c2926e55993e48b32018f6 BUG: 812287 Reviewed-on: http://review.gluster.com/3144 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Mohammed Junaid <junaid@redhat.com> Reviewed-by: Csaba Henk <csaba@redhat.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep / gsyncd: log sync failures as warningsCsaba Henk2012-04-131-1/+1
| | | | | | | | | | | | | | | Syncing of certain files can fail naturally if changes happen on master (eg. file gets deleted). Therefore logging an error is misleading. Change-Id: I7b54904e5ec7c85e4e0fa1e330123d2c44c78ac5 BUG: 764510 Reported-by: Vijaykumar Koppad <vkoppad@redhat.com> Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3113 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijaykumar <vkoppad@redhat.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
* Fix compiler warnings and typos from Debian build.Jeff Darcy2012-04-101-1/+1
| | | | | | | | | | | | | Mostly to do with "-Werror=format-security" being buggy, but while we're here we might as well fix some typos and such. Credit goes to Patrick Matthäi <pmatthaei@debian.org> for pointing these out. Change-Id: Ia32d1111d7c10b1f213df85d86b17a1326248ffd BUG: 811387 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: http://review.gluster.com/3117 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* geo-rep / gsyncd: shuffle directory entries in crawlCsaba Henk2012-04-051-0/+2
| | | | | | | | | | | In order to randomize the walk of the file tree. Change-Id: I9fc3b83d5804914a50faae8df7dbcfed2ba6f4b4 BUG: 809675 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/3079 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
* quota: log msgs indicating NULL parent inode in DEBUG level.Raghavendra G2012-04-031-2/+2
| | | | | | | | | | | | with name-less lookups its common to hit situations where parent inode is NULL. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Change-Id: I980b14c3d4691e850ae15768f73cf1b7d867e930 BUG: 809032 Reviewed-on: http://review.gluster.com/3071 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* core: adding extra data for fopsAmar Tumballi2012-03-224-207/+230
| | | | | | | | | | | | | with this change, the xlator APIs will have a dictionary as extra argument, which is passed between all the layers. This can be utilized for overloading in some of the operations. Change-Id: I58a8186b3ef647650280e63f3e5e9b9de7827b40 Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 782265 Reviewed-on: http://review.gluster.com/2960 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* features/marker: Replacing -1 with GF_CLIENT_PID_GSYNCD as part of code cleanup.Mohammed Junaid2012-03-201-1/+1
| | | | | | | | | Change-Id: Ia665060bff636b372904a726aba5249de9ade124 BUG: 769494 Signed-off-by: Mohammed Junaid <junaid@redhat.com> Reviewed-on: http://review.gluster.com/2971 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Csaba Henk <csaba@redhat.com>
* features/marker: Nameless lookup related fixesRaghavendra G2012-03-141-11/+13
| | | | | | | | | | | | while filling a loc structure, marker should not error out if loc->name is NULL or loc->path is just a gfid. Change-Id: Ie3a9cffde2d17da0377f1e41de93b099a9133abe BUG: 801364 Signed-off-by: Raghavendra G <raghavendra@gluster.com> Reviewed-on: http://review.gluster.com/2938 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cleanup and fix xattr namespace flipCsaba Henk2012-03-071-1/+1
| | | | | | | | | | | | | | | | - function of actual flipping made static - clean out references to particular namespaces from flipping logic - namespaces involved in flipping defined at single location - fix fnmatch(3) invocation with reversed pattern and string arguments - instead of "user", use "system" to flip from, because latter is free from supervision of the VFS layer (cf. attr(5)) Change-Id: I3cc5836fadcad5b237fd5c67d0dcaea63aee9164 BUG: 798716 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/2890 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
* features/marker: GFID file handle based backend related fixesv3.3.0qa26Raghavendra G2012-03-072-2/+5
| | | | | | | | | | | | * make sure loc->gfid is filled. Change-Id: I5304e650d9fc181ee1f3b65be7f2ff3847d9722e BUG: 790389 Signed-off-by: Raghavendra G <raghavendra@gluster.com> Reviewed-on: http://review.gluster.com/2888 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep / syncdaemon: determine suitable xattr namespace based on privilegeCsaba Henk2012-03-052-6/+7
| | | | | | | | | Change-Id: I91fe16d7e5e4c21f138eab4ee0b9334aec40e41b BUG: 765433 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/2838 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
* geo-rep / syncdaemon: make the timeout for establishing the connection to ↵Csaba Henk2012-03-012-1/+2
| | | | | | | | | | | | | | slave configurable It can be set through the connection-timeout tunable but we keep it hidden, intended as a workaround for some special scenarios not for general use. Change-Id: I31f9fa3873afa7babc2106ee34484123a01bdc57 BUG: 789078 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: http://review.gluster.com/2839 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* features/marker: Use loc.inode to obtain parent if loc.parent isn't set.Vijay Bellur2012-02-221-1/+13
| | | | | | | | | Change-Id: I89dddb19168a3ffb269afc9f6bcb2d7e7c9a69cd BUG: 790389 Signed-off-by: Vijay Bellur <vijay@gluster.com> Reviewed-on: http://review.gluster.com/2802 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra Bhat <raghavendrabhat@gluster.com>
* mempool: adjustments in pool sizesAmar Tumballi2012-02-221-1/+1
| | | | | | | | | | | | | | | | | * while creating 'rpc_clnt', the caller knows what would be the ideal load on it, so an extra argument to set some pool sizes * while creating 'rpcsvc', the caller knows what would be the ideal load of it, so an extra argument to set request pool size * cli memory footprint is reduced Change-Id: Ie245216525b450e3373ef55b654b4cd30741347f Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 765336 Reviewed-on: http://review.gluster.com/2784 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* core: utilize mempool for frame->local allocationsAmar Tumballi2012-02-216-55/+48
| | | | | | | | | | | | | | | in each translator, which uses 'frame->local', we are using GF_CALLOC/GF_FREE, which would be costly considering the number of allocation happening in a lifetime of 'fop'. It would be good to utilize the mem pool framework for xlator's local structures, so there is no allocation overhead. Change-Id: Ida6e65039a24d9c219b380aa1c3559f36046dc94 Signed-off-by: Amar Tumballi <amar@gluster.com> BUG: 765336 Reviewed-on: http://review.gluster.com/2772 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* features/marker: copy the gfid to loc from oplocal->loc.inodev3.3.0qa22Raghavendra Bhat2012-02-141-0/+1
| | | | | | | | | Change-Id: I8cfb70c163a3c4a0bd682678f71b38b5bae20ab4 BUG: 790393 Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Reviewed-on: http://review.gluster.com/2750 Reviewed-by: Vijay Bellur <vijay@gluster.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* features/marker: set loc->gfid in setxattr initiated from marker.Vijay Bellur2012-02-141-6/+23
| | | | | | | | | Change-Id: I7abb62272b7c8bb25ad37cbc13da7b4713924b7a BUG: 787151 Signed-off-by: Vijay Bellur <vijay@gluster.com> Reviewed-on: http://review.gluster.com/2736 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
* core: add an extra flag to readv()/writev() APIAmar Tumballi2012-02-141-2/+2
| | | | | | | | | | | | 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>
* geo-rep: gsyncd: fix up fallback xtime for orphans on master sideCsaba Henk2012-02-071-7/+8
| | | | | | | | | | Change-Id: I2fa543b4bd317e06ea621ae968300ffb7223a68a BUG: 771787 Signed-off-by: Csaba Henk <csaba@gluster.com> Reviewed-on: http://review.gluster.com/2580 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaushik BV <kaushikbv@gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* features/marker,quota: Incorporate changes to support nameless lookupRaghavendra Bhat2012-02-023-1/+83
| | | | | | | | | | Change-Id: Ic5f00a9891bd835ebee5a3e103ef0f75d0b7fc25 BUG: 783925 Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Reviewed-on: http://review.gluster.com/2702 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amar@gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* geo-rep: gsyncd: Python3 compat fixesVenky Shankar2012-01-261-3/+4
| | | | | | | | | | Change-Id: I2eef82faab3eed1189e3786a5dca296773e1caa0 BUG: 784498 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.com/2690 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Csaba Henk <csaba@redhat.com>
* core: get xattrs also as part of readdirpAmar Tumballi2012-01-252-2/+46
| | | | | | | | | | | | | 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: change lk-owner as a 1k bufferAmar Tumballi2012-01-241-1/+1
| | | | | | | | | | | | | so, NLM can send the lk-owner field directly to the locks translators, while doing the same effort, also enabled sending maximum of 500 aux gid over protocol. Change-Id: I87c2514392748416f7ffe21d5154faad2e413969 Signed-off-by: Amar Tumballi <amar@gluster.com> BUG: 767229 Reviewed-on: http://review.gluster.com/779 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* core: GFID filehandle based backend and anonymous FDsAnand Avati2012-01-201-14/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* features/marker: xtime should not be updated for modifications done by ↵Junaid2012-01-041-1/+7
| | | | | | | | | | | | | special client. Change-Id: Ia577422dedb94a1febeceb2a50cabf61d48cb714 BUG: 769494 Signed-off-by: Junaid <junaid@gluster.com> Reviewed-on: http://review.gluster.com/2559 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaushik BV <kaushikbv@gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Csaba Henk <csaba@gluster.com>
* log to stderr if "-" is given as log-fileCsaba Henk2011-11-202-2/+2
| | | | | | | | | | This works around broken /dev/stderr on some systems. Change-Id: I017b03082ff630c4a713ae74990e88b3fa20d0e1 BUG: 3686 Reviewed-on: http://review.gluster.com/560 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* glusterfs: An effort to fix all the spell mistakes and typoHarshavardhana2011-11-161-12/+12
| | | | | | | | | | | | | | | 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>
* core: remove 'ino' variable from 'loc_t' structureAmar Tumballi2011-11-161-2/+0
| | | | | | | | Change-Id: I53b007fbdb42313d207d5d63fbfaaa6aaf033f95 BUG: 3518 Reviewed-on: http://review.gluster.com/523 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* core: remove 'ino' variable from 'inode_t' structureAmar Tumballi2011-11-162-33/+18
| | | | | | | | 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>
* features/marker-quota: Use stack_wind_cookie in place of stack_wind to ↵Junaid2011-11-161-11/+12
| | | | | | | | | | | | | preserve the cookie value. In marker_rename, some of the call back functions make use of cookies sent by the calling functions. In case of stack_wind the frame->cookie is over written with the address of new frame. Change-Id: I8ec98f3305700e2c3295a10dff159ca6a19a380a BUG: 3808 Reviewed-on: http://review.gluster.com/722 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* fuse: flip xattr key from user to trusted namespace for certainVenky Shankar2011-10-281-2/+2
| | | | | | | | | | | | | | | | | | | | clients. This is needed for gsyncd/hadoop-plugin running as non-super user to be able to request extended attributes under trusted namespace. Request for a key is made under 'user.' namespace and is flipped by fuse xlator for specific xattr name to the corresponding 'trusted.' extended attribute. Both applications set a identifier (client-pid) while doing a FUSE mount, which is checked by get/set/remove interfaces in FUSE translator. Change-Id: I72f77a5dd1ee1d69c8b0e09209449348dbcf879a BUG: 3701 Reviewed-on: http://review.gluster.com/563 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* features/marker-quota: Donot log when inode or inode-ctx is NULL.Junaid2011-10-281-2/+2
| | | | | | | | | | | | When running rm -rf from mount point, quota-updation process may endup in a state where the inode is already removed from the gluster inode table, but the updation has process is still in progress. This is not a error condition because the updation is done asynchronously. Change-Id: I739bff466d23f55f842c16dd4fa2808df188ddf8 BUG: 3609 Reviewed-on: http://review.gluster.com/597 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* cli: add geo-replication log-rotate commandVenky Shankar2011-10-206-24/+66
| | | | | | | | | | | | | | | | | | | | | | | | | Rotating geo-replication master/monitor log files from cli. On invocation, the log file for a given master-slave session is backed up with the current timestamp suffixed to the file name and signal is sent to gsyncd to start logging to a new log file. Sample commands: * Rotate log file for this <master>:<slave> session: gluster volume geo-replication <master> <slave> log-rotate * Rotate log files for all session for master volume <master> gluster volume geo-replication <master> log-rotate * Rotate log files for all sessions: gluster volume geo-replication log-rotate Change-Id: I75f641b4e082a04d5373c18583ca4a1d9651d27a BUG: 3519 Reviewed-on: http://review.gluster.com/529 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Csaba Henk <csaba@gluster.com>
* build: warning suppression (round n)Amar Tumballi2011-10-201-2/+6
| | | | | | | | | | with this patch, there are no more warnings with gcc (GCC) 4.6.1 20110908 Change-Id: Ice0d52d304b9846395f8a4a191c98eb53125f792 BUG: 2550 Reviewed-on: http://review.gluster.com/607 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* features/marker-quota: Return error when inode-contribution is not present ↵Junaid2011-10-061-10/+16
| | | | | | | | | | | | in inode_ctx. Also, create the inode_contribution node even before checking for dirty and xattr not present in mq_inspect_directory_xattr function. Change-Id: Ie5b6e6ba8d5abcfc6aeb9b192720ac10aac1319e BUG: 3624 Reviewed-on: http://review.gluster.com/539 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep: disallow some special characters in url syntaxCsaba Henk2011-09-221-1/+1
| | | | | | | | | | | | | | | - space is disallowed to make rsync target unambigous for gsyncd wrapper - *, ?, [ is disallowed so that we can tell away globs from urls Nothing too bad would happen without these restrictions, but this way gluster errs out early instead of producing some mystical error further down on the way. Change-Id: Idd4e68f7d91598a7a8e30ccbc6d395da570cdf2e BUG: 3610 Reviewed-on: http://review.gluster.com/490 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* geo-rep: add support to glob patterns with "geo-rep config"Csaba Henk2011-09-221-3/+7
| | | | | | | | Change-Id: I0d54cea72e4363eab85ade774cc918081d8036e9 BUG: 3610 Reviewed-on: http://review.gluster.com/489 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
generated by cgit (git 2.34.1) at 2024-07-02 20:27:45 +0000