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* all: reduce "inline" usageKaleb S KEITHLEY2016-01-181-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | There are three kinds of inline functions: plain inline, extern inline, and static inline. All three have been removed from .c files, except those in "contrib" which aren't our problem. Inlines in .h files, which are overwhelmingly "static inline" already, have generally been left alone. Over time we should be able to "lower" these into .c files, but that has to be done in a case-by-case fashion requiring more manual effort. This part was easy to do automatically without (as far as I can tell) any ill effect. In the process, several pieces of dead code were flagged by the compiler, and were removed. backport of Change-Id: I56a5e614735c9e0a6ee420dab949eac22e25c155, http://review.gluster.org/11769, BUG: 1245331 Change-Id: Iba1efb0bc578ea4a5e9bf76b7bd93dc1be9eba44 BUG: 1283302 Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/12646 Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* ctr/sql: Providing for vol set for sqlcachesize and sqlWALsize and skip ↵Joseph Fernandes2015-12-221-36/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | recording path 1. Providing vol set option for cache size and wal autocheck point so that performance can be tuned. 2. Removed recording of file path in the db. Trimming database columns. Path need not be stored in the db, as PARGFID, GFID, Basename is suffice to derive the path during migration. Backport of http://review.gluster.org/12972 > Change-Id: I2cb590451a6d244bc91fe66c6dbffe2c2059dfb8 > BUG: 1293034 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/12972 > Reviewed-by: N Balachandran <nbalacha@redhat.com> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Tested-by: NetBSD Build System <jenkins@build.gluster.org> > Reviewed-by: Dan Lambright <dlambrig@redhat.com> > Tested-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Change-Id: Ia1c109983ec6ce75ed27b8c08f454f5b6283c31d BUG: 1293659 Reviewed-on: http://review.gluster.org/13067 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* tier/ctr: Providing option to record or ignore metadata heatJoseph Fernandes2015-11-161-3/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we heat up a file for both data and metadata write. Here we provide a ctr xlator option called "ctr-record-metadata-heat" were the admin can decide on recording metadata heat i.e heatup a file on metadata writes or not. Metadata data operation are a. setattr: explicit changing of atime/mtime using utimes, changing of posix permissions of the file b. rename: Renaming a file, c. unlink, link: adding or deleting hardlinks d. xattrs: setting or removal of xattrs. NOTE: atime, mtime and ctime change through writev, readv, truncate, mknod and create will not be considered here as these fops are data and primary metadata fops. Defaultly "ctr-record-metadata-heat" is off. Admin can switch it on using gluster volume set command. Backport of http://review.gluster.org/12540 > Change-Id: I91157509255dd5cb429cda2b6d4f64582e155e7b > BUG: 1279166 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/12540 > Tested-by: NetBSD Build System <jenkins@build.gluster.org> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Dan Lambright <dlambrig@redhat.com> > Tested-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Change-Id: I986c319f0cc337b0692a1dd02f71254e786afac4 BUG: 1282315 Reviewed-on: http://review.gluster.org/12582 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* tier/libgfdb: Extending log level flexibity in libgfdbJoseph Fernandes2015-11-111-83/+125
| | | | | | | | | | | | | | | | | | | | | | | | | | Extending log level flexibity to relevant fops and operations This is an extension to http://review.gluster.org/#/c/12491/ Backport of http://review.gluster.org/#/c/12567/ > Change-Id: I33b2f7732f89f52569fb99baa692c7e3bb4c7ab1 > BUG: 1277352 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/12567 > Tested-by: NetBSD Build System <jenkins@build.gluster.org> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Dan Lambright <dlambrig@redhat.com> > Tested-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Change-Id: Idcde04a65775ce98367967faf8a53b0f07ff022e BUG: 1279059 Reviewed-on: http://review.gluster.org/12569 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* tier/libgfdb: Replacing ASCII query file with binaryJoseph Fernandes2015-11-081-38/+159
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Earlier, when the database was queried we used to save all the queried records in an ASCII format in the query file. This caused issues like filename having ASCII delimiter and used to take a lot of space. The tier.c file also had a lot of parsing code. Here we changed the format of the query file to binary. All the logic of serialization and formating of query record is done by libgfdb. Libgfdb provides API, gfdb_write_query_record() and gfdb_read_query_record(), which the user i.e tier migrator and CTR xlator can use to write to and read from query file. With this binary format we save on disk space i.e reduce to 50% atleast as we are saving GFID's in binary format 16 bytes and not the string format which takes 36 bytes + We are not saving path of the file + we are also saving on ASCII delimiters. The on disk format of query record is as follows, +---------------------------------------------------------------------------+ | Length of serialized query record | Serialized Query Record | +---------------------------------------------------------------------------+ 4 bytes Length of serialized query record | | -------------------------------------------------| | | V Serialized Query Record Format: +---------------------------------------------------------------------------+ | GFID | Link count | <LINK INFO> |..... | FOOTER | +---------------------------------------------------------------------------+ 16 B 4 B Link Length 4 B | | | | -----------------------------| | | | | | V | Each <Link Info> will be serialized as | +-----------------------------------------------+ | | PGID | BASE_NAME_LENGTH | BASE_NAME | | +-----------------------------------------------+ | 16 B 4 B BASE_NAME_LENGTH | | | ------------------------------------------------------------------------| | | V FOOTER is a magic number 0xBAADF00D indicating the end of the record. This also serves as a serialized schema validator. Backport of http://review.gluster.org/#/c/12354/ > Change-Id: I9db7416fd421e118dd44eafab8b535caafe50d5a > BUG: 1272207 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/12354 > Reviewed-by: N Balachandran <nbalacha@redhat.com> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Dan Lambright <dlambrig@redhat.com> > Tested-by: Dan Lambright <dlambrig@redhat.com> Change-Id: I170c579027f2594a58706f826e3ddf89e34022f4 BUG: 1263619 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/12535 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* tier/ctr: Ignore CTR Lookup heal insert errorsJoseph Fernandes2015-11-071-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | CTR doesnt read from the DB, so to make sure that file records are created it does a heal during a lookup. It remembers the decision in the inode context cache and retrys periodically. When the volume is restarted it looses all the inode cache from the previous time and CTR lookup heals tries the heal again, but this time it finds that the records are already there from sql and logs this error, and remembers this until the volume is restarted or inode is flushed out of inode cache of the brick. Solution: the log levels should be reduced to trace for this case and customers need not see this. Backport of http://review.gluster.org/#/c/12491/ Change-Id: I5f11e83c306ae912a90f12220f62bb7563b8eb96 BUG: 1279059 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/12534 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* tier/ctr: Solving DB Lock issue due to write contention from db connectionsJoseph Fernandes2015-09-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a backport of 12031. > Problem: The DB on the brick is been accessed by CTR, for write and > tier migrator, for read and write. The write from tier migrator is reseting > the heat counters after a cycle. Since we are using sqlite, two connections > trying to write would cause a db lock contention. As a result CTR used to fail > to update the db. > Solution: Using the same db connection of CTR for reseting the heat counters. > 1) Introducted a new IPC FOP for CTR > 2) After the query do a ipc syncop to the underlying client xlator associated > to the brick. > 3) CTR in brick will catch the IPC FOP and cleat the heat counters. > Change-Id: I53306bfc08dcdba479deb4ccc154896521336150 > BUG: 1260730 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/12031 > Tested-by: NetBSD Build System <jenkins@build.gluster.org> > Tested-by: Gluster Build System <jenkins@build.gluster.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Conflicts: xlators/cluster/dht/src/tier.c Change-Id: I88aa289cdf21e216b42c3d8ccfb4e7e828b43772 BUG: 1262341 Reviewed-on: http://review.gluster.org/12161 Reviewed-by: Joseph Fernandes Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* libgfdb/ctr: Fixing rename or update of linkJoseph Fernandes2015-08-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Backport of http://review.gluster.org/11584 to 3.7.2 Fixing rename or updating of link in 1) libgfdb : handling return from updatelink 2) ctr xlator: correcting freeing of oldbase name in hardlink list in the update link >Change-Id: I1789c492b81876123cd456051a9ae495e876ad46 >BUG: 1241054 >Signed-off-by: Joseph Fernandes <josferna@redhat.com> >Reviewed-on: http://review.gluster.org/11584 >Tested-by: Joseph Fernandes >Reviewed-by: Dan Lambright <dlambrig@redhat.com> >Tested-by: Dan Lambright <dlambrig@redhat.com> >Tested-by: Gluster Build System <jenkins@build.gluster.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Change-Id: I6da86c06e390f62fe8a44ade7b1efda5771e9ca8 BUG: 1242536 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/11649 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* tier/ctr: Ignore creation of T file and Ctr Lookup heal improvememntsDan Lambright2015-06-271-16/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a back port of 11334 1) Ignore creation of T file in ctr_mknod 2) Ignore lookup for T file in ctr_lookup 3) Ctr_lookup: a. If the gfid and pgfid in empty dont record b. Decreased log level for multiple heal attempts c. Inode/File heal happens after an expiry period, which is configurable. d. Hardlink heal happens after an expiry period, which is configurable. > Change-Id: Id8eb5092e78beaec22d05f5283645081619e2452 > BUG: 1235269 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/11334 > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Dan Lambright <dlambrig@redhat.com> > Tested-by: Dan Lambright <dlambrig@redhat.com> Change-Id: Ia28a5cf975e41d318906f707deca447aaa35630f BUG: 1236288 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/11446 Reviewed-by: Joseph Fernandes Tested-by: Joseph Fernandes Tested-by: Gluster Build System <jenkins@build.gluster.com>
* gfdb/libglusterfs : Port log messages to a new frameworkMohamed Ashiq2015-06-261-135/+171
| | | | | | | | | | | | | | | | | | | | | | Backport of http://review.gluster.org/#/c/10819/ Cherry picked from 2847b03a38515a625e36d52c7e0a1d37107d72ba >Change-Id: I61874561fdf2c175d2b3eec0c85c25f12dc60552 >BUG: 1194640 >Signed-off-by: Mohamed Ashiq <ashiq333@gmail.com> >Reviewed-on: http://review.gluster.org/10819 >Tested-by: NetBSD Build System <jenkins@build.gluster.org> >Tested-by: Gluster Build System <jenkins@build.gluster.com> >Reviewed-by: Joseph Fernandes Change-Id: I61874561fdf2c175d2b3eec0c85c25f12dc60552 BUG: 1217722 Signed-off-by: Mohamed Ashiq <ashiq333@gmail.com> Reviewed-on: http://review.gluster.org/11284 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* ctr/xlator: Named lookup heal of pre-existing files, before ctr was ON.Joseph Fernandes2015-05-081-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: The CTR xlator records file meta (heat/hardlinks) into the data. This works fine for files which are created after ctr xlator is switched ON. But for files which were created before CTR xlator is ON, CTR xlator is not able to record either of the meta i.e heat or hardlinks. Thus making those files immune to promotions/demotions. Solution: The solution that is implemented in this patch is do ctr-db heal of all those pre-existent files, using named lookup. For this purpose we use the inode-xlator context variable option in gluster. The inode-xlator context variable for ctr xlator will have the following, a. A Lock for the context variable b. A hardlink list: This list represents the successful looked up hardlinks. These are the scenarios when the hardlink list is updated: 1) Named-Lookup: Whenever a named lookup happens on a file, in the wind path we copy all required hardlink and inode information to ctr_db_record structure, which resides in the frame->local variable. We dont update the database in wind. During the unwind, we read the information from the ctr_db_record and , Check if the inode context variable is created, if not we create it. Check if the hard link is there in the hardlink list. If its not there we add it to the list and send a update to the database using libgfdb. Please note: The database transaction can fail(and we ignore) as there already might be a record in the db. This update to the db is to heal if its not there. If its there in the list we ignore it. 2) Inode Forget: Whenever an inode forget hits we clear the hardlink list in the inode context variable and delete the inode context variable. Please note: An inode forget may happen for two reason, a. when the inode is delete. b. the in-memory inode is evicted from the inode table due to cache limits. 3) create: whenever a create happens we create the inode context variable and add the hardlink. The database updation is done as usual by ctr. 4) link: whenever a hardlink is created for the inode, we create the inode context variable, if not present, and add the hardlink to the list. 5) unlink: whenever a unlink happens we delete the hardlink from the list. 6) mknod: same as create. 7) rename: whenever a rename happens we update the hardlink in list. if the hardlink was not present for updation, we add the hardlink to the list. What is pending: 1) This solution will only work for named lookups. 2) We dont track afr-self-heal/dht-rebalancer traffic for healing. > http://review.gluster.org/#/c/10370/ > Cherry picked from commit cb11dd91a6cc296e4a3808364077f4eacb810e48 > Change-Id: Ia4bbaf84128ad6ce8c3ddd70bcfa82894c79585f > BUG: 1212037 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Signed-off-by: Dan Lambright <dlambrig@redhat.com> > Reviewed-on: http://review.gluster.org/10370 > Reviewed-by: Jeff Darcy <jdarcy@redhat.com> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Tested-by: NetBSD Build System > Reviewed-by: Vijay Bellur <vbellur@redhat.com> Change-Id: I367aa46c3f4b8f912248fb8be75866507f2538df BUG: 1219075 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/10370 Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10615 Tested-by: Vijay Bellur <vbellur@redhat.com>
* ctr/libgfdb: Performance enhancer for unlink/create/rename/link fopsJoseph Fernandes2015-05-071-30/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) ctr_link_consistency option for ctr xaltor is provided so that the user can choose to switch it on or off. /* For link consistency we do a double update i.e mark the link * during the wind and during the unwind we update/delete the link. * This has a performance hit. We give a choice here whether we need * link consistency to be spoton or not using link_consistency flag. * This will have only one link update */ 2) In delete the wind time recording is moved to unwind path. /* Special performance case: * Updating wind time in unwind for delete. This is done here * as in the wind path we will not know whether its the last * link or not. For a last link there is not use to update any * wind or unwind time!*/ > http://review.gluster.org/#/c/10170/ > Cherry picked from commit 606d9734543208542afcf9df982bf2d560235ef6 > Change-Id: I209472fb816f939db4a868b97ba053b028f17ea6 > BUG: 1217786 > Signed-off-by: Joseph Fernandes <josferna@redhat.com> > Reviewed-on: http://review.gluster.org/10170 > Reviewed-by: Dan Lambright <dlambrig@redhat.com> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Signed-off-by: Joseph Fernandes <josferna@redhat.com> Change-Id: I4a89ef80875f36cff91520f712e1f47fde258a63 BUG: 1219066 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10170 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10614 Tested-by: NetBSD Build System Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* ctr : Fix for heating of files during promotion/demotionJoseph Fernandes2015-04-081-18/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fix will solve the heating of the files during the promotion or demotion. Promotion: ~~~~~~~~~ When a file gets promoted it get the current time stamp during creation only, but following writes or reads during the migration wont heat the file. Demotion: ~~~~~~~~ When a file gets demoted it get the wind/unwind time stamp is set to zero. The following writes or reads during the migration wont heat the file. What is remaining ? ~~~~~~~~~~~~~~~~~ Bug 1209129 ( https://bugzilla.redhat.com/show_bug.cgi?id=1209129 ) Inspite of this fix there is still a issue remaining, i.e the heat of the file is not keep intact during a internal rebalance activity i.e a rebalance within a tier. Change-Id: I01e82dc226355599732d40e699062cee7960b0a5 BUG: 1207867 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10080 Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* Avoid conflict between contrib/uuid and system uuidEmmanuel Dreyfus2015-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | glusterfs relies on Linux uuid implementation, which API is incompatible with most other systems's uuid. As a result, libglusterfs has to embed contrib/uuid, which is the Linux implementation, on non Linux systems. This implementation is incompatible with systtem's built in, but the symbols have the same names. Usually this is not a problem because when we link with -lglusterfs, libc's symbols are trumped. However there is a problem when a program not linked with -lglusterfs will dlopen() glusterfs component. In such a case, libc's uuid implementation is already loaded in the calling program, and it will be used instead of libglusterfs's implementation, causing crashes. A possible workaround is to use pre-load libglusterfs in the calling program (using LD_PRELOAD on NetBSD for instance), but such a mechanism is not portable, nor is it flexible. A much better approach is to rename libglusterfs's uuid_* functions to gf_uuid_* to avoid any possible conflict. This is what this change attempts. BUG: 1206587 Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.org/10017 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* Adding Libgfdb to GlusterFSJoseph Fernandes2015-03-181-0/+1128
************************************************************************* Libgfdb | ************************************************************************* Libgfdb provides abstract mechanism to record extra/rich metadata required for data maintenance, such as data tiering/classification. It provides consumer with API for recording and querying, keeping the consumer abstracted from the data store used beneath for storing data. It works in a plug-and-play model, where data stores can be plugged-in. Presently we have plugin for Sqlite3. In the future will provide recording and querying performance optimizer. In the current implementation the schema of metadata is fixed. Schema: ~~~~~~ GF_FILE_TB Table: ~~~~~~~~~~~~~~~~~ This table has one entry per file inode. It holds the metadata required to make decisions in data maintenance. GF_ID (Primary key) : File GFID (Universal Unique IDentifier in the namespace) W_SEC, W_MSEC : Write wind time in sec & micro-sec UW_SEC, UW_MSEC : Write un-wind time in sec & micro-sec W_READ_SEC, W_READ_MSEC : Read wind time in sec & micro-sec UW_READ_SEC, UW_READ_MSEC : Read un-wind time in sec & micro-sec WRITE_FREQ_CNTR INTEGER : Write Frequency Counter READ_FREQ_CNTR INTEGER : Read Frequency Counter GF_FLINK_TABLE: ~~~~~~~~~~~~~~ This table has all the hardlinks to a file inode. GF_ID : File GFID (Composite Primary Key)``| GF_PID : Parent Directory GFID (Composite Primary Key) |-> Primary Key FNAME : File Base Name (Composite Primary Key)__| FPATH : File Full Path (Its redundant for now, this will go) W_DEL_FLAG : This Flag is used for crash consistancy, when a link is unlinked. i.e Set to 1 during unlink wind and during unwind this record is deleted LINK_UPDATE : This Flag is used when a link is changed i.e rename. Set to 1 when rename wind and set to 0 in rename unwind Libgfdb API: ~~~~~~~~~~~ Refer libglusterfs/src/gfdb/gfdb_data_store.h Change-Id: I2e9fbab3878ce630a7f41221ef61017dc43db11f BUG: 1194753 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/9683 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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