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* cluster/tier: break the monolith processing functionMilind Changire2016-10-261-309/+429
| | | | | | | | | | | | | | Break tier_migrate_using_query_file() into a more manageable tier_migrate_link() and helpers. Change-Id: I5eb2d2cff9e7a2a2da567c3c4c2d53aab195f477 BUG: 1358296 Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: http://review.gluster.org/14957 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: handle fast demotionsMilind Changire2016-10-191-15/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Demote files on priority if hi-watermark has been breached and continue to demote until the watermark drops below hi-watermark. Monitor watermark more frequently. Trigger demotion as soon as hi-watermark is breached. Add cluster.tier-emergency-demote-query-limit option to limit number of files returned from the database query for every iteration of tier_migrate_using_query_file(). If watermark hasn't dropped below hi-watermark during the first iteration, the next iteration will be triggered approximately 1 second after tier_demote() returns to the main tiering loop. Update changetimerecorder xlator to handle query for emergency demote mode. Add tier-ctr-interface.h: Move tier and ctr interface specific macros and struct definition from libglusterfs/src/gfdb/gfdb_data_store.h to new header libglusterfs/src/tier-ctr-interface.h Change-Id: If56af78c6c81d37529b9b6e65ae606ba5c99a811 BUG: 1366648 Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: http://review.gluster.org/15158 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* xlators/{dht,tier}: fix unused variable warnings/errorsKaleb S. KEITHLEY2016-09-131-4/+0
| | | | | | | | | | | | | | | | | | | | http://review.gluster.org/14085 fixes a "pragma leak" where the generated rpc/xdr headers have a pair of pragmas that disable these warnings. With the warnings disabled, many unused variables have crept into the code base. And 14085 won't pass its own smoke test until all these warnings are fixed. BUG: 1369124 Change-Id: I6feee863927254ae9f59013112bcc297ad09e89b Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/15477 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: N Balachandran <nbalacha@redhat.com>
* cluster/tier: add tiering eventsMilind Changire2016-09-081-0/+64
| | | | | | | | | | | | | | | | | | | | | | Add events for: * tier attach and detach * tier pause and resume * tier rising and dropping hi and lo watermarks Update eventskeygen.py with tiering events. Update cli help with: * attach: add optional force argument * detach: make force available as non-optional argument on its own Change-Id: I43990d3a8742151a4a7889bafa19cb572fe661bd BUG: 1368336 Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: http://review.gluster.org/15232 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: Adding compaction option for metadata databasesDiogenes Nunez2016-09-041-40/+514
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: As metadata in the database fills up, querying the database take a long time. As a result, tier migration slows down. To counteract this, we added a way to enable the compaction methods of the underlying database. The goal is to reduce the size of the underlying file by eliminating database fragmentation. NOTE: There is currently a bug where sometimes a brick will attempt to activate compaction. This happens even compaction is already turned on. The cause is narrowed down to the compact_mode_switch flipping its value. Changes: libglusterfs/src/gfdb - Added a gfdb function to compact the underlying database, compact_db() This is a no-op if the database has no such option. - Added a compaction function for SQLite3 that does the following 1) Changes the auto_vacuum pragma of the database 2) Compacts the database according to the type of compaction requested - Compaction type can be changed by changing the macro GF_SQL_COMPACT_DEF to one of the 4 compaction types in gfdb_sqlite3.h It is currently set to GF_SQL_COMPACT_INCR, or incremental vacuuming. xlators/cluster/dht/src - Added the following command-line option to enable SQLite3 compaction. gluster volume set <vol-name> tier-compact <off|on> - Added the following command-line option to change the frequency the hot and cold tier are ordered to compact. gluster volume set <vol-name> tier-hot-compact-frequency <int> gluster volume set <vol-name> tier-cold-compact-frequency <int> - tier daemon periodically sends the (new) GFDB_IPC_CTR_SET_COMPACT_PRAGMA IPC to the CTR xlator. The IPC triggers compaction of the database. The inputs are both gf_boolean_t. IPC Input: compact_active: Is compaction currently on for the db. compact_mode_switched: Did we flip the compaction switch recently? IPC Output: 0 if the compaction succeeds. Non-zero otherwise. xlators/features/changetimerecorder/src/ - When the CTR gets the compaction IPC, it launches a thread that will perform the compaction. The IPC ends after the thread is launched. To avoid extra allocations, the parameters are passed using static variables. Change-Id: I5e1433becb9eeff2afe8dcb4a5798977bf5ba0dd Signed-off-by: Diogenes Nunez <dnunez@redhat.com> Reviewed-on: http://review.gluster.org/15031 Reviewed-by: Milind Changire <mchangir@redhat.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org>
* dht/tiering: fix unused variable warnings/errorsKaleb S. KEITHLEY2016-08-301-1/+0
| | | | | | | | | | | | | | | | | | | http://review.gluster.org/14085 fixes a/the "leak" - via the generated rpc/xdr headers - of pragmas that mask these warnings. However 14085 won't pass the smoke test until all the warnings are fixed. Change-Id: I367a737570dd7d2f6cc25f4bf4299d31bb6826aa BUG: 1369124 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/15242 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Prashanth Pai <ppai@redhat.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: dont promote if estimated block consumption > hi watermarkMilind Changire2016-07-291-50/+152
| | | | | | | | | | | | | | | | | | Add test to fail promotion if estimated block consumption grows beyond hi watermark. Skip file migrations until next cycle if tier_get_fs_stat() fails in tier_migrate_using_query_file() Change-Id: Ice04572fa739c09109c4433e65965197482a7beb BUG: 1349284 Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: http://review.gluster.org/14780 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: mohammed rafi kc <rkavunga@redhat.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: fix statfs for dht/tiered volumesDan Lambright2016-07-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Return the correct size of the tiered volume in statfs. It should be the size of the cold tier, not the sum of the hot and cold tier, because the hot tier is a cache and not an extension of the volume's capacity. The number of free blocks, etc is the cold tier's capacity subtracted by the sum of utilization on the hot and cold tiers. Note if both tiers are part of the same file system this must be accounted for as well. The patch also fixes a pre-existing bug in the DHT/tier translators. If statfs was taken on a file, the code only calculated free space on the cached subvolume, not all subvolumes in the replica group. With the fix, this is corrected, except in the case where quota is used with the deem-statfs option set to "on". Change-Id: I2b8bcb4511edf83f12130960aad0a609fcf8f513 BUG: 1339689 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/14536 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* cluster/tier: downgrade max-cycle-time log message to INFODan Lambright2016-05-161-1/+1
| | | | | | | | | | | | | | | The "max cycle time" log message was incorrectly logged as an error. Downgrade it to INFO. Change-Id: Ia7d074423019fa79443bc6ea694148b7b8da455d BUG: 1335973 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/14336 Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: N Balachandran <nbalacha@redhat.com> Tested-by: N Balachandran <nbalacha@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* tier: avoid pthread_join if pthread_create failsPrasanna Kumar Kalever2016-05-111-2/+5
| | | | | | | | | | | | | | | | | this patch rearrange the code, to add some defence functionality for pthread_create(), i.e. only on a success on pthread_create() call pthread_join(). Change-Id: I0836bc950a210574cfdc755a666c6ac5df6ab430 BUG: 1332219 Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-on: http://review.gluster.org/14152 Tested-by: Prasanna Kumar Kalever <pkalever@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Joseph Fernandes Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* tier/migrator: Fetch the next query file for the next cycleJoseph Fernandes2016-04-301-0/+21
| | | | | | | | | | | | | | | | | | | | | | | Problem: When we spawn promote and demote thread, query files are build. And only query file with index 0 is picked for migration as the first query file. This may not be suitable for scenarios, where the file in the query are too big to move in the first cycle, as a result file in the other query files always get missed. We need to shuffle so that other query files also get a chance. Fix: Remember the previous first query file and shift it by one index, before the migration starts. Change-Id: I704947bcf4bab6b20b1179a6d9ae4a15a3d51bd9 BUG: 1330353 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/14068 Tested-by: Joseph Fernandes Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
* cluster/tier: add tunable to migrate files based on sizeDan Lambright2016-03-161-0/+24
| | | | | | | | | | | | | | | | | This fix adds a paramater "tier-max_promote_size" to control wether a file is migrated or not based on its size. By default the value is 0, meaning all files are migrated. If set to a non-zero value, files larger than the parameter won't be moved in tiered volumes. Change-Id: Ia6b88e9b2508935bef500d956f9192e59670fe00 BUG: 1313495 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/13570 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: Joseph Fernandes
* TIER: stopping the tierd when the volume goes downhari gowtham2016-03-141-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | If there are large number of files to be migrated and by this time if the volume goes down, then the tierd has to be stopped. But on a huge query file list it keeps checking for each file before stopping. If the volume comes up before the old tierd dies then due to the presence of old tierd new one won't be created. After the old one completes the task, it dies and the status ends up as failed. This patch will check if the status is still running and then let it continue its work. Else it will stop running the tierd. Change-Id: I6522a4e2919e84bf502b99b13873795b9274f3cd BUG: 1315659 Signed-off-by: hari gowtham <hgowtham@redhat.com> Reviewed-on: http://review.gluster.org/13646 Tested-by: Dan Lambright <dlambrig@redhat.com> 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: Dan Lambright <dlambrig@redhat.com>
* Tier: Avoiding stale entries from causing demotion to stophari gowtham2016-03-131-2/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | When the parent GFID is a stale entry, the lookup on this parent fails and this in turn fails the demotion process. This patch will make the stale entry error to be skipped. Situation for pargfid to be stale: Consider a folder from a tar file. Once the tar file is untared the files in the tar-file will start to demote. when the demotion is under progress, if we tend to delete the actual folder, then the files under it which are undergoing demotion will do a lookup on the parent which was deleted and become stale entry. This stale entry fails the Lookup and this will fail the demotion of the other files(not from tar) that are supposed to be demoted. Change-Id: I3d47c32c4077526d477a25912b0135bab98b23fc BUG: 1311178 Signed-off-by: hari gowtham <hgowtham@redhat.com> Reviewed-on: http://review.gluster.org/13501 Tested-by: hari gowtham <hari.gowtham005@gmail.com> Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
* cluster/tier: make promotion and demotion independantDan Lambright2016-02-281-125/+125
| | | | | | | | | | | | | | | | | | | | Currently a main loop in tiering spawns promotion and demotion threads, and does a join to wait for them to complete. When one of the two threads takes a long time, the main thread waits for it before exiting the join. It may wait so long the scheduled time for the other thread is skipped. In the case of demotion, it may be a long time before another attempt. This patch fixes that by making the promotion and demotion activities independant. A side effect of this change is the logic is significantly simplified. Change-Id: I1196bd4bbfc95e8aa326a9bd4ebf395032369d1c BUG: 1306852 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/13433 Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Joseph Fernandes NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* cluster/tier : Fixed wrong variable comparisonN Balachandran2016-02-101-3/+15
| | | | | | | | | | | | | | The wrong variable was being checked to determine the watermark value. Change-Id: If4c97fa70b772187f1fcbdf5193e077cb356a8b1 BUG: 1303895 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/13357 Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* cluster/tier: Create linkfiles to hardlinks correctlyN Balachandran2016-02-071-1/+1
| | | | | | | | | | | | | | There is a bug in the way hardlinks are handled in tiered volumes. Ideally, the tier linkto files on the cold tier to files that are hardlinks to each other on the hot tier, should themselves be hardlinks of each other. As they are not, they end up being files with the same gfid but different names for the cold tier dht, and end up overwriting the cached-subvol information stored in the dht inode-ctx. Change-Id: Ic658a316836e6a1729cfea848b7d212674b0edd2 BUG: 1305277 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/13391 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: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* tier/gfdb : Round-Robin read of query filesJoseph Fernandes2016-02-031-75/+305
| | | | | | | | | | | | | | | | | | | 1. Each brick on a host will get a separate query file. 2. While reading query record from these query files we read them in a Round-Robin manner. 3. When an error occurs during migration we rename it to query file with an time stamp and .err extension for better debugging. Change-Id: I27c4285d24fd695d2d5cbd9fd7db3879d277ecc8 BUG: 1302772 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/13293 Smoke: Gluster Build System <jenkins@build.gluster.com> Tested-by: N Balachandran <nbalacha@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* cluster/tier : Reset watermarks in tierN Balachandran2016-02-031-9/+36
| | | | | | | | | | | | | | | | A node which contains only cold bricks and has detected that the high watermark value has been breached on the hot tier will never reset the watermark to the correct value. The promotion check will thus always fail and no promotions will occur from that node. Change-Id: I0f0804744cd184c263acbea1ee50cd6010a49ec5 BUG: 1303895 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/13341 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: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: break out of iterating query file once cycle time endsDan Lambright2016-02-031-0/+27
| | | | | | | | | | | | | | | | When iterating the query file during migration, tiering should break out of the loop once cycle time completes. Otherwise it may be possible to stay in the loop for a long time. If that happens updates to files will become stale and have not impact migration. Change-Id: Ib60cf74bc84e8646e6a0da21ff04954b1b83c414 BUG: 1301227 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/13284 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>
* tier/dht : Default value for demote-freq, max files and mbJoseph Fernandes2016-01-261-2/+3
| | | | | | | | | | | | | | | | | | | Default value for tier-demote-frequency is 3600 sec to avoid frequent demotions. Default value for tier-max-mb is 4000 mb Default value for tier-max-files is 10000 files Change-Id: Ie60951c478a7462c425059699ab82511aa13fa0a BUG: 1300412 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/13270 Smoke: Gluster Build System <jenkins@build.gluster.com> Tested-by: Dan Lambright <dlambrig@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: Ignore quota-deem-statfs for watermark calculationN Balachandran2016-01-251-0/+21
| | | | | | | | | | | | | | | | | | The tier process watermark calculations were incorrect when the quota-deem-statfs option was enabled. We now ignore this while calculating hot tier usage to determine watermark levels. Change-Id: I308bc24432e2fa5ad1d5703e80fc391433538bbb BUG: 1301473 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/13288 Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: mohammed rafi kc <rkavunga@redhat.com> Tested-by: mohammed rafi kc <rkavunga@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: allow db queries to be interruptableDan Lambright2016-01-071-12/+38
| | | | | | | | | | | | | | | | | | | | A query to the database may take a long time if the database has many entries. The tier daemon also sends IPC calls to the bricks which can run slowly, espcially in RHEL6. While it is possible to track down each such instance, the snapshot feature should not be affected by database operations. It requires no migration be underway. Therefore it is okay to pause tiering at any time except when DHT is moving a file. This fix implements this strategy by monitoring when control passes to DHT to migrate a file using the GF_XATTR_FILE_MIGRATE_KEY trigger. If it is not, the pause operation is successful. Change-Id: I21f168b1bd424077ad5f38cf82f794060a1fabf6 BUG: 1287842 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/13104 Reviewed-by: Joseph Fernandes Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/tier: check watermark during migrationDan Lambright2016-01-051-46/+57
| | | | | | | | | | | | | | | Currently we check the watermarks only before a cycle begins. We should also check the hot tier's fullness against the watermarks during the migration so the watermark is not exceeded as files are promoted. Change-Id: I2ff87a1c308d64fbdca14bbdf55f3ec3007290ae BUG: 1293932 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/13103 Reviewed-by: Joseph Fernandes Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: N Balachandran <nbalacha@redhat.com>
* cluster/tier: Additional details in error messagesN Balachandran2016-01-041-41/+45
| | | | | | | | | | | | | | Added file path/gfid when available to the tier log messages to make debugging easier. Change-Id: I22dda329367df2b846dcf254594312c997b66083 BUG: 1273043 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/13114 Reviewed-by: mohammed rafi kc <rkavunga@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>
* cluster/dht : Ftruncate on migrating file fails with EINVALN Balachandran2015-12-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | What: If dht_open is called on a migrating file after the inode_ctx is set, subsequent FOPs on that fd do not open the fd on the dst subvol. This is seen when the open-ftruncate-close sequence is repeatedly called on a migrating file. A second call to the sequence described above causes dht_truncate_cbk to call dht_truncate2 as the dht_inode_ctx was already set by the first call. As dht_rebalance_in_progress_check is not called, the fd is not opened on the dst subvol. On a distributed-replicate volume, this causes AFR to open the fd using afr_fix_open, but with the wrong flags, causing posix_ftruncate to fail with EINVAL. The fix: We require fd specific information to make a decision while handling migrating files. Set the fd_ctx to indicate the fd has been opened on the dst subvol and check if it has been set while processing Phase1/Phase2 checks in the FOP callback functions. Change-Id: I43cdcd8017b4a11e18afdd210469de7cd9a5ef14 BUG: 1284823 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/12985 Reviewed-by: Raghavendra G <rgowdapp@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>
* tier:delete the linkfile if data file creation failsMohammed Rafi KC2015-12-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | If we are creating data file in a hot subvolume then we will create a linkfile in cold subvolume. Linkfile creation happens first. If linkfile creation was successful and data file creation failed, then linkfile in cold subvolume will become stale. This patch will delete the linkfile as well, if data file creation fails. Also this code duplicates dht_create to make tier_create Change-Id: I377a90dad47f288e9576c7323b23cf694a91a7a3 BUG: 1290677 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: http://review.gluster.org/12948 Reviewed-by: N Balachandran <nbalacha@redhat.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: do not block in synctask created from pause tierDan Lambright2015-12-211-5/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | We had run sleep() in the pause tier callback. Blocking within a synctask is dangerous. The sleep() call does not inform the synctask scheduler that a thread is no longer running. It therefore believes it is running. If a second synctask already exists, it may not be able to run. This occurs if the thread limit in the pool has been reached. Note the pool size only grows when a synctask is created, not when it is moved from wait state to run state, as is the case when an FOP completes. When the tier is paused during migration, synctasks already exist waiting for responses to FOPs to the server with high probability. The fix is to yield() in the RPC callback, which will place the synctask into the wait queue and free up a thread for the FOP callback. A timer wakes the callback after sufficient time has elapsed for the pause to occur. Change-Id: I6a947ee04c6e5649946cb6d8207ba17263a67fc6 BUG: 1267950 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12987 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
* cluster/tier: fix tier-max-files bookeeping and helpDan Lambright2015-12-181-1/+1
| | | | | | | | | | | | | | | | | | The option tier-max-files represents the maximum number of files trasferred by a node in a gives cycle. Fix help message to reflect the "per node" aspect. The code transferred one more file per cycle than the given value. Also change the default values of max file and max bytes to very large values, effectively we will not throttle migration unless the administrator requests it via CLI. Change-Id: Ic2949ed3d8c35afe7c9ae4db72195603cfb2e28f BUG: 1292671 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12984 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* tier:unlink during migrationMohammed Rafi KC2015-12-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | files deleted during promotion were not deleting as the files are moving from hashed to non-hashed. On deleting a file that is undergoing promotion, the unlink call is not sent to the dst file as the hashed subvol == cached subvol. This causes the file to reappear once the migration is complete. This patch also fixes a problem with stale linkfile deleting. Change-Id: I4b02a498218c9d8eeaa4556fa4219e91e7fa71e5 BUG: 1282390 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: http://review.gluster.org/12829 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 : Spawn promotion or demotion thread depending on local bricksJoseph Fernandes2015-12-091-22/+29
| | | | | | | | | | | | | | | | | | | Spawn Promotion or Demotion depending if there are any Cold or Hot bricks present localy. IF the local HOT brick list is empty dont spawn demote thread. IF the local COLD brick list is empty dont spawn promote thread. Signed-off-by: Joseph Fernandes <josferna@redhat.com> Change-Id: I524730e59414dd156c78ec0bd7a3629212697e6e BUG: 1289578 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/12912 Tested-by: NetBSD Build System <jenkins@build.gluster.org> 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>
* cluster/tier : Fix double free in tier processN Balachandran2015-12-071-3/+1
| | | | | | | | | | | | | | | | | The tier process tries to free ipc_ctr_params twice if the syncop_ipc call in tier_process_ctr_query fails. ipc_ctr_params is freed when ctr_ipc_in_dict is freed. But ctr_ipc_out_dict is NULL when syncop_ipc fails, causing GF_FREE to be called on a non-NULL ipc_ctr_params ptr again. Change-Id: Ia15f36dfbcd97be5524588beb7caad5cb79efdb4 BUG: 1288995 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/12890 Reviewed-by: Joseph Fernandes 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>
* tier/dht: Fix mem leak from lookup response dictJoseph Fernandes2015-12-061-0/+6
| | | | | | | | | | | | | Fixing memory leak from response dict during a parent lookup to get the path. Change-Id: I60c23d0b25e7f763f0e53c40e71ee053aba6d555 BUG: 1288019 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/12867 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Joseph Fernandes Tested-by: Joseph Fernandes
* tier/tier: Ignoring status of already migrated filesJoseph Fernandes2015-12-031-5/+16
| | | | | | | | | | | | | Ignore the status of already migrated files and in the process don't count. Change-Id: Idba6402508d51a4285ac96742c6edf797ee51b6a BUG: 1276141 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/12758 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Dan Lambright <dlambrig@redhat.com>
* cluster/tier: fix loading tier.so into glusterdN Balachandran2015-12-031-8/+34
| | | | | | | | | | | | | | | | | glusterd occasionally loads shared libraries of translators. This failed for tiering due to a reference to dht_methods which is defined as a global variable which is not necessary. The global variable has been removed and this is now a member of dht_conf and is now initialised in the *_init calls. Change-Id: Ifa0a21e3962b5cd8d9b927ef1d087d3b25312953 BUG: 1287842 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/12863 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>
* cluster/tier: readdirp to cold tier onlyDan Lambright2015-11-231-41/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is possible a file would get migrated in the middle of a readdir operation. If there are four subvolumes A,B,C,D, and if readdir reads them in order and reaches subvol B, then, if a file is moved from D to A, it will not be included in the readdir output. This phenonema has pre-existed in DHT migration but is more apparent in tiering. When a file is moved off the hashed subvolume a T file is created. For tiering, we will make the cold subvolume the hashed subvolume. This will ensure the creation of a T file. Readdir will not skip T files in the tier translator. Making the cold subvolume the hashed subvolume ensures the T files created on promotions or creates will be less likely to fill the volume. Creates still put the data on the hot subvolume. Change-Id: Ifde557d3d0e94a4570ca9f115adee3db2ee75407 BUG: 1281598 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12530 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: N Balachandran <nbalacha@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* core: use syscall wrappers instead of direct syscalls - tailKaleb S KEITHLEY2015-11-161-2/+2
| | | | | | | | | | | | | | | | | | | | tail, as in dog chasing its tail. These are the unwrapped syscalls that have crept in (or were missed) in the previous patches. various xlators and other components are invoking system calls directly instead of using the libglusterfs/syscall.[ch] wrappers. If not using the system call wrappers there should be a comment in the source explaining why the wrapper isn't used. Change-Id: If183487de92fc7cbc47d4c5aa3f3e80eae50b84f BUG: 1267967 Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/12589 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* cluster/tier: Disallow detach commit when detach in progressDan Lambright2015-11-161-4/+5
| | | | | | | | | | | | | 1. Check if detach is running, disallow detach commit if so. 2. Cleanup shutdown of tier daemon on detach: do not rerun fix-layout, do not send incorrect status back to glusterd. Change-Id: I97202f748773c1176396a4ffd32a4c7fa9b9c1bc BUG: 1279637 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12560 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* cluster/tier correct promotion cycle calculationDan Lambright2015-11-071-3/+9
| | | | | | | | | | | | | | | The tier translator should only choose candidate files for promotion from the most recent cycle, not a multiple of the most recent cycles. Otherwise user observed behavior can be inconsistent. Remove related test in tier.t that is subject to race condition. Change-Id: I9ad1523cac00f904097ce468efa6ddd515857024 BUG: 1275524 Signed-off-by: root <root@rhs-cli-15.gdev.lab.eng.bos.redhat.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12480 Reviewed-by: Joseph Fernandes Tested-by: Gluster Build System <jenkins@build.gluster.com>
* tier/libgfdb: Replacing ASCII query file with binaryJoseph Fernandes2015-11-061-191/+149
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. 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>
* tier/dht: Ignoring replica for migration countingJoseph Fernandes2015-11-041-7/+24
| | | | | | | | | | | | | | | | | | | We used to count replica files for migration counting even though they were ignore for migration as the replica brick didnt have the ownership (as per the replication xlator either AFR/EC). As a result the number of files migrated would show a wrong count, i.e each replicated file would be counted 1 + number of replica. This patch ignores such cases. Change-Id: I91aa352ee3b0a5029790653266e9333f3947d0ac BUG: 1276141 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/12453 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>
* cluster/tier : Files skipped during tier query parsingN Balachandran2015-11-031-2/+2
| | | | | | | | | | | | | | | | | The tier query parsing code was using fscanf to read each record. As space is a delimiter for fscanf, filenames containing spaces caused the parsing to return unexpected values causing various issues in the tier process, including crashes due to buffer overflows. Change-Id: Ife602cb7ecb158fccbc2c89e4d2959bd97098a87 BUG: 1276562 Signed-off-by: N Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/12469 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>
* core: use syscall wrappers instead of direct syscalls - miscellaneousKaleb S. KEITHLEY2015-10-281-5/+6
| | | | | | | | | | | | | | | various xlators and other components are invoking system calls directly instead of using the libglusterfs/syscall.[ch] wrappers. If not using the system call wrappers there should be a comment in the source explaining why the wrapper isn't used. Change-Id: I1f47820534c890a00b452fa61f7438eb2b3f667c BUG: 1267967 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/12276 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* cluster/tier do not log error message on lookup heal for files on hot tierDan Lambright2015-10-281-13/+14
| | | | | | | | | | | | | | | | | | On fix-layout heal files are scanned. Files found are exist on the hot or cold subvolume. Those not found in the cold tier would exist on the hot. They should not be flagged as an error. Replace INFO with TRACE for common tier migration logs. Frequent migration was growing the log files too quickly. On migratation failures, do not acrue files towards cycle limit's budget. Change-Id: Ie832ee07c43bce5477ae81c939d1fe8416a11615 BUG: 1275383 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12430 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Joseph Fernandes
* cluster/tier: add pause tier for snapshotsDan Lambright2015-10-211-1/+67
| | | | | | | | | | | | | | | | | | | | Snaps of tiered volumes cannot handle files undergoing migration. We implement a helper mechanism to "pause" migration. Any files undergoing migration are aborted. Clean up is done to remove sticky bits and data at the destination. Migration is restarted after snap completes. For testing an internal switch is added. It is not exposed externally. gluster volume set vol1 tier-pause [true|false] Change-Id: Ia85bbf89ac142e9b7e73fcbef98bb9da86097799 BUG: 1267950 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12304 Reviewed-by: N Balachandran <nbalacha@redhat.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/tier do not abort migration if a single brick is downDan Lambright2015-10-201-12/+12
| | | | | | | | | | | | | | When a bricks are down, promotion/demotion should still be possible. For example, if an EC brick is down, the other bricks are able to recover the data and migrate it. Change-Id: I8e650c640bce22a3ad23d75c363fbb9fd027d705 BUG: 1273215 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12397 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Joseph Fernandes
* cluster/tier remove suprious log messages on valid failed migrationDan Lambright2015-10-191-1/+8
| | | | | | | | | | | | | | On a write to a replica volume, we record in all brick's databases an entry. When the tier daemon runs, it will only move the file if it is the true owner of the file as defined by the XATTR_NODE_UUID_KEY. Change-Id: Ib82717f87a3f94f3d0d9f969773de9e88d6aaf22 BUG: 1273043 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12391 Reviewed-by: Joseph Fernandes Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/tier: add watermarks and policy driverDan Lambright2015-10-101-88/+383
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fix introduces infrastructure to support different policies for promotion and demotion. Currently the tier feature automatically promotes and demotes files periodically based on access. This is good for testing but too stringent for most real workloads. It makes it difficult to fully utilize a hot tier- data will be demoted before it is touched- its unlikely a 100GB hot SSD will have all its data touched in a window of time. A new parameter "mode" allows the user to pick promotion/demotion polcies. The "test mode" will be used for *.t and other general testing. This is the current mechanism. The "cache mode" introduces watermarks. The watermarks represent levels of data residing on the hot tier. "cache mode" policy: The % the hot tier is full is called P. Do not promote or demote more than D MB or F files. A random number [0-100] is called R. Rules for migration: if (P < watermark_low) don't demote, always promote. if (P >= watermark_low) && (P < watermark_hi) demote if R < P; promote if R > P. if (P > watermark_hi) always demote, don't promote. gluster volume set {vol} cluster.watermark-hi % gluster volume set {vol} cluster.watermark-low % gluster volume set {vol} cluster.tier-max-mb {D} gluster volume set {vol} cluster.tier-max-files {F} gluster volume set {vol} cluster.tier-mode {test|cache} Change-Id: I157f19667ec95aa1d53406041c1e3b073be127c2 BUG: 1257911 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12039 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* tier/ctr: Solution for db locks for tier migrator and ctr using sqlite ↵Joseph Fernandes2015-10-081-15/+286
| | | | | | | | | | | | | | | | | | | | | | | | | | | version less than 3.7 i.e rhel 6.7 Problem: On RHEL 6.7, we have sqlite version 3.6.2 which doesnt support WAL journaling mode, as this journaling mode is only available in sqlite 3.7 and above. As a result we cannot have to progreses concurrently accessing sqlite, without running into db locks! Well WAL is also need for performace on CTR side. Solution: This solution is to use CTR db connection for doing queries when WAL mode is absent. i,e tier migrator will send sync_op ipc calls to CTR, which in turn will do the query and create/update the query file suggested by tier migrator. Pending: Well this solution will stop the db locks but the performance is still an issue for CTR. We are developing an in-Memory Transaction Log (iMeTaL) which will help boost the CTR performance by doing in memory udpates on the IO path and later flush the updates to the db in a batch/segment flush. Change-Id: Ie3149643ded159234b5cc6aa6cf93b9022c2f124 BUG: 1240577 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/12191 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Luis Pabon <lpabon@redhat.com>
* cluster/tier do not flag migration error on already migrated fileDan Lambright2015-09-161-15/+13
| | | | | | | | | | | | | | In some cases a brick will try to migrate a file that has already been migrated. This is a legal case, e.g. when both bricks are replica pairs. Change-Id: If2578b947014cbbdfb3c6591db9044d6b1d92774 BUG: 1263726 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/12185 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Joseph Fernandes Tested-by: Gluster Build System <jenkins@build.gluster.com>
generated by cgit (git 2.34.1) at 2024-05-12 22:28:51 +0000