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* cluster/afr: Make choose-local "reconfigurable"Krutika Dhananjay2017-09-301-0/+11
| | | | | | | | | | With this change, enabling choose-local (which means its state makes transition from "off" to "on") will be effective after the first gfid-lookup on "/" since volume-set was executed. Change-Id: Ibab292ba705d993b475cd0303fb3318211fb2500 BUG: 1480525 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* cluster/afr: Remove debug logs in fix_quorum_options()Vijay Bellur2017-05-191-5/+0
| | | | | | | | | | | Change-Id: Id019b0c6425849eece8a9aba7acec9a521dfb10b BUG: 1452378 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: https://review.gluster.org/17335 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* Halo Replication feature for AFR translatorKevin Vigor2017-05-021-2/+96
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Halo Geo-replication is a feature which allows Gluster or NFS clients to write locally to their region (as defined by a latency "halo" or threshold if you like), and have their writes asynchronously propagate from their origin to the rest of the cluster. Clients can also write synchronously to the cluster simply by specifying a halo-latency which is very large (e.g. 10seconds) which will include all bricks. In other words, it allows clients to decide at mount time if they desire synchronous or asynchronous IO into a cluster and the cluster can support both of these modes to any number of clients simultaneously. There are a few new volume options due to this feature: halo-shd-latency: The threshold below which self-heal daemons will consider children (bricks) connected. halo-nfsd-latency: The threshold below which NFS daemons will consider children (bricks) connected. halo-latency: The threshold below which all other clients will consider children (bricks) connected. halo-min-replicas: The minimum number of replicas which are to be enforced regardless of latency specified in the above 3 options. If the number of children falls below this threshold the next best (chosen by latency) shall be swapped in. New FUSE mount options: halo-latency & halo-min-replicas: As descripted above. This feature combined with multi-threaded SHD support (D1271745) results in some pretty cool geo-replication possibilities. Operational Notes: - Global consistency is gaurenteed for synchronous clients, this is provided by the existing entry-locking mechanism. - Asynchronous clients on the other hand and merely consistent to their region. Writes & deletes will be protected via entry-locks as usual preventing concurrent writes into files which are undergoing replication. Read operations on the other hand should never block. - Writes are allowed from _any_ region and propagated from the origin to all other regions. The take away from this is care should be taken to ensure multiple writers do not write the same files resulting in a gfid split-brain which will require resolution via split-brain policies (majority, mtime & size). Recommended method for preventing this is using the nfs-auth feature to define which region for each share has RW permissions, tiers not in the origin region should have RO perms. TODO: - Synchronous clients (including the SHD) should choose clients from their own region as preferred sources for reads. Most of the plumbing is in place for this via the child_latency array. - Better GFID split brain handling & better dent type split brain handling (i.e. create a trash can and move the offending files into it). - Tagging in addition to latency as a means of defining which children you wish to synchronously write to Test Plan: - The usual suspects, clang, gcc w/ address sanitizer & valgrind - Prove tests Reviewers: jackl, dph, cjh, meyering Reviewed By: meyering Subscribers: ethanr Differential Revision: https://phabricator.fb.com/D1272053 Tasks: 4117827 Change-Id: I694a9ab429722da538da171ec528406e77b5e6d1 BUG: 1428061 Signed-off-by: Kevin Vigor <kvigor@fb.com> Reviewed-on: http://review.gluster.org/16099 Reviewed-on: https://review.gluster.org/16177 Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com> 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: Pranith Kumar Karampuri <pkarampu@redhat.com>
* core: run many bricks within one glusterfsd processJeff Darcy2017-01-301-0/+7
| | | | | | | | | | | | | | | | | | | | | | | This patch adds support for multiple brick translator stacks running in a single brick server process. This reduces our per-brick memory usage by approximately 3x, and our appetite for TCP ports even more. It also creates potential to avoid process/thread thrashing, and to improve QoS by scheduling more carefully across the bricks, but realizing that potential will require further work. Multiplexing is controlled by the "cluster.brick-multiplex" global option. By default it's off, and bricks are started in separate processes as before. If multiplexing is enabled, then *compatible* bricks (mostly those with the same transport options) will be started in the same process. Change-Id: I45059454e51d6f4cbb29a4953359c09a408695cb BUG: 1385758 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: https://review.gluster.org/14763 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: Vijay Bellur <vbellur@redhat.com>
* afr: fix auto-quorumJeff Darcy2016-11-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | (1) afr_have_quorum is dead code. It was copied to afr_has_quorum, and everything else uses that, but the original was never deleted (until now). (2) Auto-quorum should be default for any N>2. Leaving quorum disabled is BAD, but apparently deemed acceptable for N=2 because there's no real quorum in that case. For any larger number (including arbiter configurations) there is such a thing as real quorum and we should use it by default. Note that for N=3 the answers we get from "N % 2" (the old check) and "N > 2" (the new one) are the same. (3) The special case for even N in afr_has_quorum has been simplified and explained more thoroughly in a comment. Change-Id: I48b33c15093512fecf516b26dcf09afecb7ae33b Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: http://review.gluster.org/15873 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Vijay Bellur <vbellur@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* afr: Implement IPC fopPoornima G2016-09-291-0/+1
| | | | | | | | | | | | | | | | | | | | | Currently ipc() is not implemented in afr. md-cache and upcall uses ipc to register the list of xattrs, [1] for more details. For the ipc op GF_IPC_TARGET_UPCALL, it has to be wound to all the replica subvolumes. ipc() is failed when any of the subvolumes fails with other than ENOTCONN or all of the subvolumes are down. [1] http://review.gluster.org/#/c/15002/ Change-Id: I0f651330eafda64e4d922043fe53bd0014536247 BUG: 1211863 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: http://review.gluster.org/15378 Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com> 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: Pranith Kumar Karampuri <pkarampu@redhat.com>
* afr: Consume compound fops in afr transactionAnuradha Talur2016-09-011-0/+12
| | | | | | | | | | | | | Change-Id: Ib06ece3cce1b10d28d6d2953da28444f5c2457ad BUG: 1290304 Signed-off-by: Anuradha Talur <atalur@redhat.com> Reviewed-on: http://review.gluster.org/15014 Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com> 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: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* cluster/ec: Do multi-threaded self-healPranith Kumar K2016-08-241-3/+3
| | | | | | | | | | | BUG: 1368451 Change-Id: I5d6b91d714ad6906dc478a401e614115c89a8fbb Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/15083 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Ashish Pandey <aspandey@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* cluster/afr: Give option to do consistent-ioPranith Kumar K2016-08-221-4/+22
| | | | | | | | | | | | | | | | | | | | | | | Problem: When tiering/rebalance does migrations and afr with 2-way replica is in picture, migration can read stale data if the source brick goes down and writes to the destination. After this deletion of the file leads to permanent loss of data after migration. Fix: Rebalance/tiering should migrate only when the data is definitely not stale. So introduce an option in afr called consistent-io which will be enabled in migration daemons. BUG: 1306398 Change-Id: I750f65091cc70a3ed4bf3c12f83d0949af43920a Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/13425 Reviewed-by: Anuradha Talur <atalur@redhat.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> 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>
* afr: afr-pending-xattr fallback checkRavishankar N2016-06-091-31/+63
| | | | | | | | | | | | | | | | | | | | Commit 6e635284a4411b816d4d860a28262c9e6dc4bd6a introduced a comma separated list of values to be used as AFR's pending changelogs. If this xlator option is missing in the volfile, fall back to using client xlator names for constructing the pending changelog names. Also, since the aforementioned commit was reverted from 3.7 and 3.8 branches, introduce GD_OP_VERSION_3_9_0 and change the op-version for this feature to GD_OP_VERSION_3_9_0. Change-Id: I3639b9ab475bd8d9929cc7527d9f4584dee1ad1b BUG: 1285152 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/14642 Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
* cluster/ec: Add/Modify description for eager-lock optionAshish Pandey2016-06-031-4/+5
| | | | | | | | | | | | | | | | | | | This patch provides description for disperse.eager-lock option for disperse volume. It also modifies the description for cluster.eager-lock option to indicate that this option is only for replica volume. Change-Id: Ie73298947fcaaa6aaf825978bc2d27ceaff386d2 BUG: 1327171 Signed-off-by: Ashish Pandey <aspandey@redhat.com> Reviewed-on: http://review.gluster.org/13999 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* core: assorted spelling mistakes reported by DebianKaleb S KEITHLEY2016-05-261-1/+1
| | | | | | | | | | | | | | | | | See also > Change-Id: I567a4be8f0f31f6285550f243fe802895f6bc43b Reported-by: Patrick Matthäi <pmatthaei@debian.org> BUG: 1336793 Change-Id: Icb9a6ff94d86663a5bca4ba931d810439c02556e Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/14526 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: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* afr: Automagic unsplit-brain by [ctime|mtime|size|majority]Ravishankar N2016-05-251-0/+46
| | | | | | | | | | | | | | | | | | | | | Introduce cluster.favorite-child-policy which when enabled with [ctime|mtime|size|majority], automatically heals files that are in split-brian. The majority policy will not pick a source if there is no majority. The other three policies pick the first brick with a valid reply and non-zero ctime/mtime/size as source. Change-Id: I3c099a0404082213860f74f2c9b4d207cfaedb76 BUG: 1328224 Original-author: Richard Wareing <rwareing@fb.com> Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/14026 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: Anuradha Talur <atalur@redhat.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* cluster/afr: Entry self-heal performance enhancementsKrutika Dhananjay2016-04-291-0/+10
| | | | | | | | | | | Change-Id: I52da41dff5619492b656c2217f4716a6cdadebe0 BUG: 1269461 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/12442 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* afr: propagate child up event after timeoutRavishankar N2016-04-271-0/+6
| | | | | | | | | | | | | | | | | | | | | Problem: During mount, afr waits for response from all its children before notifying the parent xlator. In a 1x2 replica volume , if one of the nodes is down, the mount will hang for more than a minute until child down is received from the client xlator for that node. Fix: When parent up is received by afr, start a 10 second timer. In the timer call back, if we receive a successful child up from atleast one brick, propagate the event to the parent xlator. Change-Id: I31e57c8802c1a03a4a5d581ee4ab82f3a9c8799d BUG: 1054694 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/11113 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* cluster/afr: Fix spurious entries in heal infoPranith Kumar K2016-04-201-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Locking schemes in afr-v1 were locking the directory/file completely during self-heal. Newer schemes of locking don't require Full directory, file locking. But afr-v2 still has compatibility code to work-well with older clients, where in entry-self-heal it takes a lock on a special 256 character name which can't be created on the fs. Similarly for data self-heal there used to be a lock on (LLONG_MAX-2, 1). Old locking scheme requires heal info to take sh-domain locks before examining heal-state. If it doesn't take sh-domain locks, then there is a possibility of heal-info hanging till self-heal completes because of compatibility locks. But the problem with heal-info taking sh-domain locks is that if two heal-info or shd, heal-info try to inspect heal state in parallel using trylocks on sh-domain, there is a possibility that both of them assuming a heal is in progress. This was leading to spurious entries being shown in heal-info. Fix: As long as there is afr-v1 way of locking, we can't fix this problem with simple solutions. If we know that the cluster is running newer versions of locking schemes, in those cases we can give accurate information in heal-info. So introduce a new option called 'locking-scheme' which if it is 'granular' will give correct information in heal-info. Not only that, Extra network hops for taking compatibility locks, sh-domain locks in heal info will not be necessary anymore. Thus it improves performance. BUG: 1322850 Change-Id: Ia563c5f096b5922009ff0ec1c42d969d55d827a3 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/13873 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: Ashish Pandey <aspandey@redhat.com> Reviewed-by: Anuradha Talur <atalur@redhat.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
* cluster/afr: Use parallel dir scan functionalityPranith Kumar K2016-04-041-0/+29
| | | | | | | | | | | BUG: 1221737 Change-Id: I0ed71a72f0e33bd733723e00a01cf28378c5534e Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/13755 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: Jeff Darcy <jdarcy@redhat.com>
* cluster/afr: Choose local child as source if possiblePranith Kumar K2016-03-111-0/+7
| | | | | | | | | | | | | | | | | It is better to choose local brick as source if possible to prevent over the wire read thus saving on bandwidth. Also changed code to not attempt data-heal if 'source' is selected as arbiter. Change-Id: I9a328d0198422280b13a30ab99545370a301dfea BUG: 1314150 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/13585 Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Krutika Dhananjay <kdhananj@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* afr: Add throttled background client-side healsRavishankar N2016-03-011-3/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | If a heal is needed after inode refresh (lookup, read_txn), launch it in the background instead of blocking the fop (that triggered refresh) until the heal happens. afr_replies_interpret() is modified such that the heal is launched only if atleast one sink brick is up. Max. no of heals that can happen in parallel is configurable via the 'background-self-heal-count' volume option. Any number greater than that is put in a wait queue whose length is configurable via 'heal-wait-queue-leng' volume option. If the wait queue is also full, further heals will be ignored. Default values: background-self-heal-count=8, heal-wait-queue-leng=128 Change-Id: I1d4a52814cdfd43d90591b6d2ad7b6219937ce70 BUG: 1297172 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/13207 Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
* afr: warn if pending xattrs missing during init()Ravishankar N2015-12-211-0/+7
| | | | | | | | | | | | | | | | | | Since commit 6e635284a4411b816d4d860a28262c9e6dc4bd6a (glusterfs-3.7.7), the afr pending xattrs are stored in the volfile and used by afr when it initializes. If a cluster is upgraded, prevent afr from loading until the op-version has been bumped up to 3.7.7 and the volfiles have been regenerated using a volume set command. Without this fix, AFR will crash when initialzing. Change-Id: I14249dedb3f2f77cd754d78d8a9a70fdc5fc8c10 BUG: 1293293 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/13038 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* glusterd/afr: store afr pending xattrs as a volume optionRavishankar N2015-12-151-9/+23
| | | | | | | | | | | | | | | | | | | | | | | Problem: When AFR xlator initialises, it uses the name of the client xlators below it for storing the pending changelogs (xattrs). This can be problem when some other xlator is loaded in between AFR and the client. Though that is a trivial 'traverse-graph-till-the-client-and-use-the-name' fix in AFR's init(), there are other issues like when there's no client xlator at all when, say, AFR is moved to the server side. Fix: The client xlator names are currenly unique and stored as brickinfo->brick_ids. So persist these ids as comma separated values in AFR's volume_options and use them as xattr values during init(). Change-Id: Ie761ffeb3373a4c4d85ad05c84a768c4188aa90d BUG: 1285152 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/12738 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* afr: Porting messages to new logging frameworkarao2015-06-271-15/+19
| | | | | | | | | | | | | updated Change-Id: I94ac7b2cb0d43a82cf0eeee21407cff9b575c458 BUG: 1194640 Signed-off-by: arao <arao@redhat.com> Signed-off-by: Mohamed Ashiq <mliyazud@redhat.com> Reviewed-on: http://review.gluster.org/9897 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* build: do not #include "config.h" in each fileNiels de Vos2015-05-291-4/+0
| | | | | | | | | | | | | | | | | | Instead of including config.h in each file, and have the additional config.h included from the compiler commandline (-include option). When a .c file tests for a certain #define, and config.h was not included, incorrect assumtions were made. With this change, it can not happen again. BUG: 1222319 Change-Id: I4f9097b8740b81ecfe8b218d52ca50361f74cb64 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10808 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* cluster/afr : Prevent inode-evict during split-brain resolutionAnuradha2015-05-071-0/+2
| | | | | | | | | | | | | | | | | | | | | 1) Provided setfattr command to set timeout for split-brain choice. 2) If split-brain inspection/resolution is being done from the mount for a file, ref the inode when split-brain-choice is set. This inode will be unconditionally unref-ed after timeout seconds set by the user/default otherwise. 3) Updated the doc and testcase to reflect the changes. Change-Id: I15c9037dee28855f21e680e7e3632e1f48dba4e1 BUG: 1209104 Signed-off-by: Anuradha <atalur@redhat.com> Reviewed-on: http://review.gluster.org/10134 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* arbiter: load arbiter xlator on every 3rd brick of a replica 3 AFR subvolRavishankar N2015-04-271-0/+6
| | | | | | | | | | | | | | | | | | | Logic for adding the 'glusterd_brickinfo->group' member and using it to find the brick positon has been taken from http://review.gluster.org/#/c/9919. Thanks to Jeff Darcy for that. This patch is a part of the arbiter logic implementation for 3 way AFR details of which can be found at http://review.gluster.org/#/c/9656/ Change-Id: Idbfe4f29ee8e098e0102def8f38b32314316b188 BUG: 1199985 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/10257 Tested-by: NetBSD Build System Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>
* cluster/afr: Make read child match check in afr optionalKrutika Dhananjay2015-03-181-0/+14
| | | | | | | | | | | | | | | Having this particular check which was introduced by commit c78998c39f0857ea7aacba360632c148afc54a55 causes a drop in performance in readdirp. So the behavior is made configurable with this patch. Change-Id: I2858fc18b3539df7aa6d3f489e0d5cfaeb8a9b3c BUG: 1202669 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/9917 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* cluster/afr: Implementation of quorum-readsPranith Kumar K2015-03-051-0/+11
| | | | | | | | | | | Provide a way of disabling reads when quorum is not met. Change-Id: Ic4f57c2b87a0b8514600759de3a7a47e217fe3b5 BUG: 1187885 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/9543 Reviewed-by: Ravishankar N <ravishankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/afr: Enable auto-quorum for replicate with odd number of bricksPranith Kumar K2015-02-091-8/+16
| | | | | | | | | | | Change-Id: I908934f1f22cf7d2d0ceccc0dedf28a69861997f BUG: 1187885 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/9517 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Anuradha Talur <atalur@redhat.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com>
* cluster/afr: Re-introduce heal-timeout optionPranith Kumar K2015-02-061-0/+12
| | | | | | | | | | | Change-Id: I87484c810006a92ed7489284b6d74e9b0aecae80 BUG: 1177601 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/9598 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: move messages to new logging frameworkRavishankar N2014-05-171-2/+3
| | | | | | | | | | | | | | Change important (from a diagnostics point of view) log messages to use the gf_msg() framework. Change-Id: I0a58184bbb78989db149e67f07c140a21c781bc2 BUG: 1075611 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/7784 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* cluster/afr: Fix bugs in quorum implementationPranith Kumar K2014-05-141-3/+6
| | | | | | | | | | | | | - Have common place to perform quorum fop wind check - Check if fop succeeded in a way that matches quorum to avoid marking changelog in split-brain. BUG: 1066996 Change-Id: Ibc5b80e01dc206b2abbea2d29e26f3c60ff4f204 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/7600 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com>
* build: MacOSX Porting fixesHarshavardhana2014-04-241-3/+3
| | | | | | | | | | | | | | | | | | | | | git@forge.gluster.org:~schafdog/glusterfs-core/osx-glusterfs Working functionality on MacOSX - GlusterD (management daemon) - GlusterCLI (management cli) - GlusterFS FUSE (using OSXFUSE) - GlusterNFS (without NLM - issues with rpc.statd) Change-Id: I20193d3f8904388e47344e523b3787dbeab044ac BUG: 1089172 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Signed-off-by: Dennis Schafroth <dennis@schafroth.com> Tested-by: Harshavardhana <harsha@harshavardhana.net> Tested-by: Dennis Schafroth <dennis@schafroth.com> Reviewed-on: http://review.gluster.org/7503 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: refactorAnand Avati2014-03-221-94/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Remove client side self-healing completely (opendir, openfd, lookup) - Re-work readdir-failover to work reliably in case of NFS - Remove unused/dead lock recovery code - Consistently use xdata in both calls and callbacks in all FOPs - Per-inode event generation, used to force inode ctx refresh - Implement dirty flag support (in place of pending counts) - Eliminate inode ctx structure, use read subvol bits + event_generation - Implement inode ctx refreshing based on event generation - Provide backward compatibility in transactions - remove unused variables and functions - make code more consistent in style and pattern - regularize and clean up inode-write transaction code - regularize and clean up dir-write transaction code - regularize and clean up common FOPs - reorganize transaction framework code - skip setting xattrs in pending dict if nothing is pending - re-write self-healing code using syncops - re-write simpler self-heal-daemon Change-Id: I1e4080c9796c8a2815c2dab4be3073f389d614a8 BUG: 1021686 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/6010 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Change default_value for option self-heal-daemonVijay Bellur2014-01-271-1/+1
| | | | | | | | | Change-Id: Ic3c8e179a63e82a4e416aea620796f8bb3236c7c BUG: 1052759 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/6706 Reviewed-by: Kaushal M <kaushal@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* Fix typos, and spacing issues.James Shubin2013-12-231-7/+6
| | | | | | | | | Change-Id: I459ba4e87e9bc4f1c373f7abe8701bfa8450253c BUG: 1045690 Signed-off-by: James Shubin <james@shubin.ca> Reviewed-on: http://review.gluster.org/6556 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Fix description string for option 'self-heal-daemon'Vijay Bellur2013-12-021-1/+2
| | | | | | | | | Change-Id: I267b935a16a6fdc72a4e791f681289e6868baee6 BUG: 1010834 Reviewed-on: http://review.gluster.org/6385 Reviewed-by: Ravishankar N <ravishankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterfs: zerofill supportM. Mohan Kumar2013-11-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for a new ZEROFILL fop. Zerofill writes zeroes to a file in the specified range. This fop will be useful when a whole file needs to be initialized with zero (could be useful for zero filled VM disk image provisioning or during scrubbing of VM disk images). Client/application can issue this FOP for zeroing out. Gluster server will zero out required range of bytes ie server offloaded zeroing. In the absence of this fop, client/application has to repetitively issue write (zero) fop to the server, which is very inefficient method because of the overheads involved in RPC calls and acknowledgements. WRITESAME is a SCSI T10 command that takes a block of data as input and writes the same data to other blocks and this write is handled completely within the storage and hence is known as offload . Linux ,now has support for SCSI WRITESAME command which is exposed to the user in the form of BLKZEROOUT ioctl. BD Xlator can exploit BLKZEROOUT ioctl to implement this fop. Thus zeroing out operations can be completely offloaded to the storage device , making it highly efficient. The fop takes two arguments offset and size. It zeroes out 'size' number of bytes in an opened file starting from 'offset' position. This patch adds zerofill support to the following areas: - libglusterfs - io-stats - performance/md-cache,open-behind - quota - cluster/afr,dht,stripe - rpc/xdr - protocol/client,server - io-threads - marker - storage/posix - libgfapi Client applications can exloit this fop by using glfs_zerofill introduced in libgfapi.FUSE support to this fop has not been added as there is no system call for this fop. Changes from previous version 3: * Removed redundant memory failure log messages Changes from previous version 2: * Rebased and fixed build error Changes from previous version 1: * Rebased for latest master TODO : * Add zerofill support to trace xlator * Expose zerofill capability as part of gluster volume info Here is a performance comparison of server offloaded zeofill vs zeroing out using repeated writes. [root@llmvm02 remote]# time ./offloaded aakash-test log 20 real 3m34.155s user 0m0.018s sys 0m0.040s [root@llmvm02 remote]# time ./manually aakash-test log 20 real 4m23.043s user 0m2.197s sys 0m14.457s [root@llmvm02 remote]# time ./offloaded aakash-test log 25; real 4m28.363s user 0m0.021s sys 0m0.025s [root@llmvm02 remote]# time ./manually aakash-test log 25 real 5m34.278s user 0m2.957s sys 0m18.808s The argument log is a file which we want to set for logging purpose and the third argument is size in GB . As we can see there is a performance improvement of around 20% with this fop. Change-Id: I081159f5f7edde0ddb78169fb4c21c776ec91a18 BUG: 1028673 Signed-off-by: Aakash Lal Das <aakash@linux.vnet.ibm.com> Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/5327 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr : Implementation of command "gluster volume heal vn statistics"Venkatesh Somyajulu2013-10-141-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "gluster volume heal volumename statistics" command gives the summary of the afr crawl done based on the entries present in the xattrop directory. Whenever afr crawls are attempted, the beginning time of crawl, end time of crawl, no of files healed, heal-failed count and number of files in split brain are shown along with the type of the crawl. If crawl is already in progress then it will give the number of files healed, heal failed count and number of files in split-brain from the beginning of the crawl and instead of telling the end time of the crawl, "CRAWL IN PROGRESS" message will be shown. Output format: command: "gluster volume heal volume-name statistics" Output: Gathering afr crawl statistics crawl statistics on volume volume-name has been successful ------------------------------------------------ Crawl statistics for brick no 0 Hostname of brick 192.168.122.248 Starting time of crawl: Wed Jul 10 15:52:38 2013 Ending time of crawl: Wed Jul 10 15:52:38 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 Starting time of crawl: Wed Jul 10 15:52:38 2013 Ending time of crawl: Wed Jul 10 15:52:38 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 ------------------------------------------------ Crawl statistics for brick no 1 Hostname of brick 192.168.122.1 Starting time of crawl: Wed Jul 10 15:52:42 2013 Ending time of crawl: Wed Jul 10 15:52:42 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 Starting time of crawl: Wed Jul 10 15:52:42 2013 Ending time of crawl: Wed Jul 10 15:52:42 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 -------------------------------------------------- Change-Id: I10bf9d10b005741db9973fb1352e0dd59ed99aa9 BUG: 949400 Signed-off-by: Venkatesh Somyajulu <vsomyaju@redhat.com> Reviewed-on: http://review.gluster.org/4790 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: Change Self-heal domain separator to ':'Pranith Kumar K2013-10-031-1/+2
| | | | | | | | | | | | | | | | | | | | '-' can be present in a volume. This may lead to domain collisions in future. Tests: Checked in gdb that domain comes with ':' separator: Breakpoint 1, pl_common_inodelk (frame=0x7fdabcce51a4, this=0x8bde20, volume=0x8b50d0 "r2-replicate-0:self-heal", inode=0x7fdab822f0e8, cmd=6, flock=0x7fdabc76eee4, loc=0x7fdabc76ede4, fd=0x0, xdata=0x7fdabc6e0ab0) at inodelk.c:597 Change-Id: I4456ae35ac8bf21e6361c34e9ad437f744a2e84b BUG: 993981 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/6025 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: Let two data-self-heals compete in new domainPranith Kumar K2013-07-031-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: At the moment data-self-heal acquires locks in following pattern. It takes full file lock then gets xattrs on files on both replicas. Decides sources/sinks based on the xattrs. Now it acquires lock from 0-128k then unlocks the full file lock. Syncs 0-128k range from source to sink now acquires lock 128k+1 till 256k then unlocks 0-128k, syncs 128k+1 till 256k block... so on finally it takes full file lock again then unlocks the final small range block. It decrements pending counts and then unlocks the full file lock. This pattern of locks is chosen to avoid more than 1 self-heal to be in progress. BUT if another self-heal tries to take a full file lock while a self-heal is already in progress it will be put in blocked queue, further inodelks from writes by the application will also be put in blocked queue because of the way locks xlator grants inodelks. So until the self-heal is complete writes are blocked. Here is the code: xlators/features/locks/src/inodelk.c - line 225 if (__blocked_lock_conflict (dom, lock) && !(__owner_has_lock (dom, lock))) { ret = -EAGAIN; if (can_block == 0) goto out; gettimeofday (&lock->blkd_time, NULL); list_add_tail (&lock->blocked_locks, &dom->blocked_inodelks); } This leads to hangs in applications. Fix: Since we want to prevent two parallel self-heals. We let them compete in a separate "domain". Lets call the domain on which the locks have been taken on in previous approach as "data-domain". In the new approach When a self-heal is triggered, it acquires a full lock in the new domain "self-heal-domain". After this it performs data-self-heal using the locks in "data-domain" as before. unlock the full file lock in "self-heal-domain" With this approach, application's writevs don't have to wait in pending queue when more than 1 self-heal is triggered. Change-Id: Id79aef3dfa888945977fb9758374ac41c320d0d5 BUG: 967717 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5100 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Refactor inodelk to handle multiple domainsPranith Kumar K2013-07-031-2/+0
| | | | | | | | | | | | | | | | | | - afr_local_copy should not be memduping locked nodes, that would mean that lock is taken in self-heal on those nodes even before it actually takes the lock. So removed memdup code. Even entry lock related copying (lockee info) is also not necessary for self-heal functionality, so removing that as well. Since it is not local_copy anymore changed its name. - My editor changed tabs to spaces. Change-Id: I8dfb92cb8338e9a967c06907a8e29a8404782d61 BUG: 967717 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5099 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Provide an option to disable afr durabilityPranith Kumar K2013-07-031-0/+11
| | | | | | | | | Change-Id: I40eec20ca6b3f857245a2438883822e251077ee9 BUG: 979365 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5269 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterfs: discard (hole punch) supportBrian Foster2013-06-131-0/+1
| | | | | | | | | | | | | | | | Add support for the DISCARD file operation. Discard punches a hole in a file in the provided range. Block de-allocation is implemented via fallocate() (as requested via fuse and passed on to the brick fs) but a separate fop is created within gluster to emphasize the fact that discard changes file data (the discarded region is replaced with zeroes) and must invalidate caches where appropriate. BUG: 963678 Change-Id: I34633a0bfff2187afeab4292a15f3cc9adf261af Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/5090 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gluster: add fallocate fop supportBrian Foster2013-06-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement support for the fallocate file operation. fallocate allocates blocks for a particular inode such that future writes to the associated region of the file are guaranteed not to fail with ENOSPC. This patch adds fallocate support to the following areas: - libglusterfs - mount/fuse - io-stats - performance/md-cache,open-behind - quota - cluster/afr,dht,stripe - rpc/xdr - protocol/client,server - io-threads - marker - storage/posix - libgfapi BUG: 949242 Change-Id: Ice8e61351f9d6115c5df68768bc844abbf0ce8bd Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/4969 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: Empty string should not be default option valPranith Kumar K2012-12-051-3/+2
| | | | | | | | | | | | Glusterd does not allow empty string as default value. Changed afr option values to disallow empty string as value. Change-Id: I92a2d658907dbc6101e1139dd91f548acb5506f5 BUG: 859927 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/4271 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: Provide option to disable readdir failoverPranith Kumar K2012-12-031-0/+8
| | | | | | | | | | | | | | | | | In a replica pair unlike files, directories may not have their content in same order, so readdir for same (offset, size) may not give same entries on both the sobvolumes of replica pair. Switching over from one subvolume to another may not be a good idea sometimes. It may lead to duplicate entries or fewer entries or both. This patch provides a way to disable readdir-failover so that applications like rebalance can retry if they want to. Change-Id: I2b23eb224a2e84016a561362932613ac824c11a0 BUG: 859387 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/4159 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Added descriptions to afr optionsPranith Kumar K2012-11-291-11/+86
| | | | | | | | | Change-Id: I4aef1c79743ee08b62e04d7b709f3e8c6b9dc56a BUG: 881517 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/4244 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Anand Avati <avati@redhat.com>
* cluster/afr: Provide option to set readdir-size in entry-self-healPranith Kumar K2012-10-011-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | Problem: Entry self-heal does lookups on all the entries that are read in readdir. More the size of readdir more number of lookups happen in parallel. It is observed that it leads to HUGE cpu spikes rendering everything else on the system unusable. Fix: Provided the option self-heal-readdir-size to configure the size. Default value is at 1KB. Tests: Checked that the readdirs are happening with the configured value in entry-self-heal. Change-Id: Icaa937ad88857e6f9a12375b1e7f6a49192bc8b1 BUG: 860895 Signed-off-by: Pranith Kumar K <pranithk@gluster.com> Reviewed-on: http://review.gluster.org/4002 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
* afr: add option description of 'open'.Jules.Wang2012-09-061-0/+2
| | | | | | | | | Signed-off-by: Jules Wang <lancelotds@163.com> Change-Id: I6c7dd337c758e82e9d58d4d65f53b5aa72ac5dfb BUG: 764890 Reviewed-on: http://review.gluster.org/3895 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* xlator options: remove overwritten data-self-heal initializerJim Meyering2012-07-111-1/+0
| | | | | | | | | | | | | In the struct volume_options, the "data-self-heal" .default_value = "" setting appeared before a setting of .default_value = "on". Remove the former. Change-Id: Ieddcc18f61581f9448d806cd8bf8eefaaf0118b9 BUG: 789278 Signed-off-by: Jim Meyering <meyering@redhat.com> Reviewed-on: http://review.gluster.com/3589 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
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