Ian Halliday
2018-Mar-25 19:39 UTC
[Gluster-users] Sharding problem - multiple shard copies with mismatching gfids
Hello all, We are having a rather interesting problem with one of our VM storage systems. The GlusterFS client is throwing errors relating to GFID mismatches. We traced this down to multiple shards being present on the gluster nodes, with different gfids. Hypervisor gluster mount log: [2018-03-25 18:54:19.261733] E [MSGID: 133010] [shard.c:1724:shard_common_lookup_shards_cbk] 0-ovirt-zone1-shard: Lookup on shard 7 failed. Base file gfid = 87137cac-49eb-492a-8f33-8e33470d8cb7 [Stale file handle] The message "W [MSGID: 109009] [dht-common.c:2162:dht_lookup_linkfile_cbk] 0-ovirt-zone1-dht: /.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7: gfid different on data file on ovirt-zone1-replicate-3, gfid local = 00000000-0000-0000-0000-000000000000, gfid node = 57c6fcdf-52bb-4f7a-aea4-02f0dc81ff56 " repeated 2 times between [2018-03-25 18:54:19.253748] and [2018-03-25 18:54:19.263576] [2018-03-25 18:54:19.264349] W [MSGID: 109009] [dht-common.c:1901:dht_lookup_everywhere_cbk] 0-ovirt-zone1-dht: /.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7: gfid differs on subvolume ovirt-zone1-replicate-3, gfid local = fdf0813b-718a-4616-a51b-6999ebba9ec3, gfid node = 57c6fcdf-52bb-4f7a-aea4-02f0dc81ff56 On the storage nodes, we found this: [root at n1 gluster]# find -name 87137cac-49eb-492a-8f33-8e33470d8cb7.7 ./brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 ./brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 [root at n1 gluster]# ls -lh ./brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 ---------T. 2 root root 0 Mar 25 13:55 ./brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 [root at n1 gluster]# ls -lh ./brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 -rw-rw----. 2 root root 3.8G Mar 25 13:55 ./brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 [root at n1 gluster]# getfattr -d -m . -e hex ./brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 # file: brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6c6162656c65645f743a733000 trusted.gfid=0xfdf0813b718a4616a51b6999ebba9ec3 trusted.glusterfs.dht.linkto=0x6f766972742d3335302d7a6f6e65312d7265706c69636174652d3300 [root at n1 gluster]# getfattr -d -m . -e hex ./brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 # file: brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6c6162656c65645f743a733000 trusted.afr.dirty=0x000000000000000000000000 trusted.bit-rot.version=0x020000000000000059914190000ce672 trusted.gfid=0x57c6fcdf52bb4f7aaea402f0dc81ff56 I'm wondering how they got created in the first place, and if anyone has any insight on how to fix it? Storage nodes: [root at n1 gluster]# gluster --version glusterfs 4.0.0 [root at n1 gluster]# gluster volume info Volume Name: ovirt-350-zone1 Type: Distributed-Replicate Volume ID: 106738ed-9951-4270-822e-63c9bcd0a20e Status: Started Snapshot Count: 0 Number of Bricks: 7 x (2 + 1) = 21 Transport-type: tcp Bricks: Brick1: 10.0.6.100:/gluster/brick1/brick Brick2: 10.0.6.101:/gluster/brick1/brick Brick3: 10.0.6.102:/gluster/arbrick1/brick (arbiter) Brick4: 10.0.6.100:/gluster/brick2/brick Brick5: 10.0.6.101:/gluster/brick2/brick Brick6: 10.0.6.102:/gluster/arbrick2/brick (arbiter) Brick7: 10.0.6.100:/gluster/brick3/brick Brick8: 10.0.6.101:/gluster/brick3/brick Brick9: 10.0.6.102:/gluster/arbrick3/brick (arbiter) Brick10: 10.0.6.100:/gluster/brick4/brick Brick11: 10.0.6.101:/gluster/brick4/brick Brick12: 10.0.6.102:/gluster/arbrick4/brick (arbiter) Brick13: 10.0.6.100:/gluster/brick5/brick Brick14: 10.0.6.101:/gluster/brick5/brick Brick15: 10.0.6.102:/gluster/arbrick5/brick (arbiter) Brick16: 10.0.6.100:/gluster/brick6/brick Brick17: 10.0.6.101:/gluster/brick6/brick Brick18: 10.0.6.102:/gluster/arbrick6/brick (arbiter) Brick19: 10.0.6.100:/gluster/brick7/brick Brick20: 10.0.6.101:/gluster/brick7/brick Brick21: 10.0.6.102:/gluster/arbrick7/brick (arbiter) Options Reconfigured: cluster.min-free-disk: 50GB performance.strict-write-ordering: off performance.strict-o-direct: off nfs.disable: off performance.readdir-ahead: on transport.address-family: inet performance.cache-size: 1GB features.shard: on features.shard-block-size: 5GB server.event-threads: 8 server.outstanding-rpc-limit: 128 storage.owner-uid: 36 storage.owner-gid: 36 performance.quick-read: off performance.read-ahead: off performance.io-cache: off performance.stat-prefetch: on cluster.eager-lock: enable network.remote-dio: enable cluster.quorum-type: auto cluster.server-quorum-type: server cluster.data-self-heal-algorithm: full performance.flush-behind: off performance.write-behind-window-size: 8MB client.event-threads: 8 server.allow-insecure: on Client version: [root at kvm573 ~]# gluster --version glusterfs 3.12.5 Thanks! - Ian -------------- next part -------------- An HTML attachment was scrubbed... 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Krutika Dhananjay
2018-Mar-26 07:10 UTC
[Gluster-users] Sharding problem - multiple shard copies with mismatching gfids
The gfid mismatch here is between the shard and its "link-to" file, the creation of which happens at a layer below that of shard translator on the stack. Adding DHT devs to take a look. -Krutika On Mon, Mar 26, 2018 at 1:09 AM, Ian Halliday <ihalliday at ndevix.com> wrote:> Hello all, > > We are having a rather interesting problem with one of our VM storage > systems. The GlusterFS client is throwing errors relating to GFID > mismatches. We traced this down to multiple shards being present on the > gluster nodes, with different gfids. > > Hypervisor gluster mount log: > > [2018-03-25 18:54:19.261733] E [MSGID: 133010] [shard.c:1724:shard_common_lookup_shards_cbk] > 0-ovirt-zone1-shard: Lookup on shard 7 failed. Base file gfid > 87137cac-49eb-492a-8f33-8e33470d8cb7 [Stale file handle] > The message "W [MSGID: 109009] [dht-common.c:2162:dht_lookup_linkfile_cbk] > 0-ovirt-zone1-dht: /.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7: gfid > different on data file on ovirt-zone1-replicate-3, gfid local > 00000000-0000-0000-0000-000000000000, gfid node = 57c6fcdf-52bb-4f7a-aea4-02f0dc81ff56 > " repeated 2 times between [2018-03-25 18:54:19.253748] and [2018-03-25 > 18:54:19.263576] > [2018-03-25 18:54:19.264349] W [MSGID: 109009] > [dht-common.c:1901:dht_lookup_everywhere_cbk] 0-ovirt-zone1-dht: > /.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7: gfid differs on subvolume > ovirt-zone1-replicate-3, gfid local = fdf0813b-718a-4616-a51b-6999ebba9ec3, > gfid node = 57c6fcdf-52bb-4f7a-aea4-02f0dc81ff56 > > > On the storage nodes, we found this: > > [root at n1 gluster]# find -name 87137cac-49eb-492a-8f33-8e33470d8cb7.7 > ./brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 > ./brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 > > [root at n1 gluster]# ls -lh ./brick2/brick/.shard/87137cac-49eb-492a-8f33- > 8e33470d8cb7.7 > ---------T. 2 root root 0 Mar 25 13:55 ./brick2/brick/.shard/ > 87137cac-49eb-492a-8f33-8e33470d8cb7.7 > [root at n1 gluster]# ls -lh ./brick4/brick/.shard/87137cac-49eb-492a-8f33- > 8e33470d8cb7.7 > -rw-rw----. 2 root root 3.8G Mar 25 13:55 ./brick4/brick/.shard/ > 87137cac-49eb-492a-8f33-8e33470d8cb7.7 > > [root at n1 gluster]# getfattr -d -m . -e hex ./brick2/brick/.shard/ > 87137cac-49eb-492a-8f33-8e33470d8cb7.7 > # file: brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 > security.selinux=0x73797374656d5f753a6f626a6563 > 745f723a756e6c6162656c65645f743a733000 > trusted.gfid=0xfdf0813b718a4616a51b6999ebba9ec3 > trusted.glusterfs.dht.linkto=0x6f766972742d3335302d7a6f6e65 > 312d7265706c69636174652d3300 > > [root at n1 gluster]# getfattr -d -m . -e hex ./brick4/brick/.shard/ > 87137cac-49eb-492a-8f33-8e33470d8cb7.7 > # file: brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 > security.selinux=0x73797374656d5f753a6f626a6563 > 745f723a756e6c6162656c65645f743a733000 > trusted.afr.dirty=0x000000000000000000000000 > trusted.bit-rot.version=0x020000000000000059914190000ce672 > trusted.gfid=0x57c6fcdf52bb4f7aaea402f0dc81ff56 > > > I'm wondering how they got created in the first place, and if anyone has > any insight on how to fix it? > > Storage nodes: > [root at n1 gluster]# gluster --version > glusterfs 4.0.0 > > [root at n1 gluster]# gluster volume info > > Volume Name: ovirt-350-zone1 > Type: Distributed-Replicate > Volume ID: 106738ed-9951-4270-822e-63c9bcd0a20e > Status: Started > Snapshot Count: 0 > Number of Bricks: 7 x (2 + 1) = 21 > Transport-type: tcp > Bricks: > Brick1: 10.0.6.100:/gluster/brick1/brick > Brick2: 10.0.6.101:/gluster/brick1/brick > Brick3: 10.0.6.102:/gluster/arbrick1/brick (arbiter) > Brick4: 10.0.6.100:/gluster/brick2/brick > Brick5: 10.0.6.101:/gluster/brick2/brick > Brick6: 10.0.6.102:/gluster/arbrick2/brick (arbiter) > Brick7: 10.0.6.100:/gluster/brick3/brick > Brick8: 10.0.6.101:/gluster/brick3/brick > Brick9: 10.0.6.102:/gluster/arbrick3/brick (arbiter) > Brick10: 10.0.6.100:/gluster/brick4/brick > Brick11: 10.0.6.101:/gluster/brick4/brick > Brick12: 10.0.6.102:/gluster/arbrick4/brick (arbiter) > Brick13: 10.0.6.100:/gluster/brick5/brick > Brick14: 10.0.6.101:/gluster/brick5/brick > Brick15: 10.0.6.102:/gluster/arbrick5/brick (arbiter) > Brick16: 10.0.6.100:/gluster/brick6/brick > Brick17: 10.0.6.101:/gluster/brick6/brick > Brick18: 10.0.6.102:/gluster/arbrick6/brick (arbiter) > Brick19: 10.0.6.100:/gluster/brick7/brick > Brick20: 10.0.6.101:/gluster/brick7/brick > Brick21: 10.0.6.102:/gluster/arbrick7/brick (arbiter) > Options Reconfigured: > cluster.min-free-disk: 50GB > performance.strict-write-ordering: off > performance.strict-o-direct: off > nfs.disable: off > performance.readdir-ahead: on > transport.address-family: inet > performance.cache-size: 1GB > features.shard: on > features.shard-block-size: 5GB > server.event-threads: 8 > server.outstanding-rpc-limit: 128 > storage.owner-uid: 36 > storage.owner-gid: 36 > performance.quick-read: off > performance.read-ahead: off > performance.io-cache: off > performance.stat-prefetch: on > cluster.eager-lock: enable > network.remote-dio: enable > cluster.quorum-type: auto > cluster.server-quorum-type: server > cluster.data-self-heal-algorithm: full > performance.flush-behind: off > performance.write-behind-window-size: 8MB > client.event-threads: 8 > server.allow-insecure: on > > > Client version: > [root at kvm573 ~]# gluster --version > glusterfs 3.12.5 > > > Thanks! > > - Ian > > > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://lists.gluster.org/mailman/listinfo/gluster-users >-------------- next part -------------- An HTML attachment was scrubbed... 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Raghavendra Gowdappa
2018-Mar-26 07:25 UTC
[Gluster-users] Sharding problem - multiple shard copies with mismatching gfids
On Mon, Mar 26, 2018 at 12:40 PM, Krutika Dhananjay <kdhananj at redhat.com> wrote:> The gfid mismatch here is between the shard and its "link-to" file, the > creation of which happens at a layer below that of shard translator on the > stack. > > Adding DHT devs to take a look. >Thanks Krutika. I assume shard doesn't do any dentry operations like rename, link, unlink on the path of file (not the gfid handle based path) internally while managing shards. Can you confirm? If it does these operations, what fops does it do? @Ian, I can suggest following way to fix the problem: * Since one of files listed is a DHT linkto file, I am assuming there is only one shard of the file. If not, please list out gfids of other shards and don't proceed with healing procedure. * If gfids of all shards happen to be same and only linkto has a different gfid, please proceed to step 3. Otherwise abort the healing procedure. * If cluster.lookup-optimize is set to true abort the healing procedure * Delete the linkto file - the file with permissions -------T and xattr trusted.dht.linkto and do a lookup on the file from mount point after turning off readdriplus [1]. As to reasons on how we ended up in this situation, Can you explain me what is the I/O pattern on this file - like are there lots of entry operations like rename, link, unlink etc on the file? There have been known races in rename/lookup-heal-creating-linkto where linkto and data file have different gfids. [2] fixes some of these cases [1] http://lists.gluster.org/pipermail/gluster-users/2017-March/030148.html [2] https://review.gluster.org/#/c/19547/ regards, Raghavendra> > >> -Krutika > > On Mon, Mar 26, 2018 at 1:09 AM, Ian Halliday <ihalliday at ndevix.com> > wrote: > >> Hello all, >> >> We are having a rather interesting problem with one of our VM storage >> systems. The GlusterFS client is throwing errors relating to GFID >> mismatches. We traced this down to multiple shards being present on the >> gluster nodes, with different gfids. >> >> Hypervisor gluster mount log: >> >> [2018-03-25 18:54:19.261733] E [MSGID: 133010] >> [shard.c:1724:shard_common_lookup_shards_cbk] 0-ovirt-zone1-shard: >> Lookup on shard 7 failed. Base file gfid = 87137cac-49eb-492a-8f33-8e33470d8cb7 >> [Stale file handle] >> The message "W [MSGID: 109009] [dht-common.c:2162:dht_lookup_linkfile_cbk] >> 0-ovirt-zone1-dht: /.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7: gfid >> different on data file on ovirt-zone1-replicate-3, gfid local >> 00000000-0000-0000-0000-000000000000, gfid node >> 57c6fcdf-52bb-4f7a-aea4-02f0dc81ff56 " repeated 2 times between >> [2018-03-25 18:54:19.253748] and [2018-03-25 18:54:19.263576] >> [2018-03-25 18:54:19.264349] W [MSGID: 109009] >> [dht-common.c:1901:dht_lookup_everywhere_cbk] 0-ovirt-zone1-dht: >> /.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7: gfid differs on >> subvolume ovirt-zone1-replicate-3, gfid local >> fdf0813b-718a-4616-a51b-6999ebba9ec3, gfid node >> 57c6fcdf-52bb-4f7a-aea4-02f0dc81ff56 >> >> >> On the storage nodes, we found this: >> >> [root at n1 gluster]# find -name 87137cac-49eb-492a-8f33-8e33470d8cb7.7 >> ./brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 >> ./brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 >> >> [root at n1 gluster]# ls -lh ./brick2/brick/.shard/87137cac >> -49eb-492a-8f33-8e33470d8cb7.7 >> ---------T. 2 root root 0 Mar 25 13:55 ./brick2/brick/.shard/87137cac >> -49eb-492a-8f33-8e33470d8cb7.7 >> [root at n1 gluster]# ls -lh ./brick4/brick/.shard/87137cac >> -49eb-492a-8f33-8e33470d8cb7.7 >> -rw-rw----. 2 root root 3.8G Mar 25 13:55 ./brick4/brick/.shard/87137cac >> -49eb-492a-8f33-8e33470d8cb7.7 >> >> [root at n1 gluster]# getfattr -d -m . -e hex ./brick2/brick/.shard/87137cac >> -49eb-492a-8f33-8e33470d8cb7.7 >> # file: brick2/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 >> security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6 >> c6162656c65645f743a733000 >> trusted.gfid=0xfdf0813b718a4616a51b6999ebba9ec3 >> trusted.glusterfs.dht.linkto=0x6f766972742d3335302d7a6f6e653 >> 12d7265706c69636174652d3300 >> >> [root at n1 gluster]# getfattr -d -m . -e hex ./brick4/brick/.shard/87137cac >> -49eb-492a-8f33-8e33470d8cb7.7 >> # file: brick4/brick/.shard/87137cac-49eb-492a-8f33-8e33470d8cb7.7 >> security.selinux=0x73797374656d5f753a6f626a6563745f723a756e6 >> c6162656c65645f743a733000 >> trusted.afr.dirty=0x000000000000000000000000 >> trusted.bit-rot.version=0x020000000000000059914190000ce672 >> trusted.gfid=0x57c6fcdf52bb4f7aaea402f0dc81ff56 >> >> >> I'm wondering how they got created in the first place, and if anyone has >> any insight on how to fix it? >> >> Storage nodes: >> [root at n1 gluster]# gluster --version >> glusterfs 4.0.0 >> >> [root at n1 gluster]# gluster volume info >> >> Volume Name: ovirt-350-zone1 >> Type: Distributed-Replicate >> Volume ID: 106738ed-9951-4270-822e-63c9bcd0a20e >> Status: Started >> Snapshot Count: 0 >> Number of Bricks: 7 x (2 + 1) = 21 >> Transport-type: tcp >> Bricks: >> Brick1: 10.0.6.100:/gluster/brick1/brick >> Brick2: 10.0.6.101:/gluster/brick1/brick >> Brick3: 10.0.6.102:/gluster/arbrick1/brick (arbiter) >> Brick4: 10.0.6.100:/gluster/brick2/brick >> Brick5: 10.0.6.101:/gluster/brick2/brick >> Brick6: 10.0.6.102:/gluster/arbrick2/brick (arbiter) >> Brick7: 10.0.6.100:/gluster/brick3/brick >> Brick8: 10.0.6.101:/gluster/brick3/brick >> Brick9: 10.0.6.102:/gluster/arbrick3/brick (arbiter) >> Brick10: 10.0.6.100:/gluster/brick4/brick >> Brick11: 10.0.6.101:/gluster/brick4/brick >> Brick12: 10.0.6.102:/gluster/arbrick4/brick (arbiter) >> Brick13: 10.0.6.100:/gluster/brick5/brick >> Brick14: 10.0.6.101:/gluster/brick5/brick >> Brick15: 10.0.6.102:/gluster/arbrick5/brick (arbiter) >> Brick16: 10.0.6.100:/gluster/brick6/brick >> Brick17: 10.0.6.101:/gluster/brick6/brick >> Brick18: 10.0.6.102:/gluster/arbrick6/brick (arbiter) >> Brick19: 10.0.6.100:/gluster/brick7/brick >> Brick20: 10.0.6.101:/gluster/brick7/brick >> Brick21: 10.0.6.102:/gluster/arbrick7/brick (arbiter) >> Options Reconfigured: >> cluster.min-free-disk: 50GB >> performance.strict-write-ordering: off >> performance.strict-o-direct: off >> nfs.disable: off >> performance.readdir-ahead: on >> transport.address-family: inet >> performance.cache-size: 1GB >> features.shard: on >> features.shard-block-size: 5GB >> server.event-threads: 8 >> server.outstanding-rpc-limit: 128 >> storage.owner-uid: 36 >> storage.owner-gid: 36 >> performance.quick-read: off >> performance.read-ahead: off >> performance.io-cache: off >> performance.stat-prefetch: on >> cluster.eager-lock: enable >> network.remote-dio: enable >> cluster.quorum-type: auto >> cluster.server-quorum-type: server >> cluster.data-self-heal-algorithm: full >> performance.flush-behind: off >> performance.write-behind-window-size: 8MB >> client.event-threads: 8 >> server.allow-insecure: on >> >> >> Client version: >> [root at kvm573 ~]# gluster --version >> glusterfs 3.12.5 >> >> >> Thanks! >> >> - Ian >> >> >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users at gluster.org >> http://lists.gluster.org/mailman/listinfo/gluster-users >> > >-------------- next part -------------- An HTML attachment was scrubbed... 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