I encounterd an issue on production servers using GlusterFS servers 5.1 and clients 4.1.5 when several process write at the same time on a gluster volume. With more than 48 process writes on the volume at the same time, they are blocked in D state (uninterruptible sleep), I guess some volume settings have to be tuned but can't figure out which. The client is using op-version 40100 on this volume Below are volume info, volume settings and ps output on blocked processes. root@glusterVM1:~# gluster volume info logsscripts Volume Name: logsscripts Type: Replicate Volume ID: cb49af70-d197-43c1-852d-0bcf8dc9f6fa Status: Started Snapshot Count: 0 Number of Bricks: 1 x (2 + 1) = 3 Transport-type: tcp Bricks: Brick1: glusterVM1:/bricks/logsscripts/brick1/data Brick2: glusterVM2:/bricks/logsscripts/brick1/data Brick3: glusterVM3:/bricks/logsscripts/brick1/data (arbiter) Options Reconfigured: server.tcp-user-timeout: 42 cluster.data-self-heal-algorithm: full features.trash: off diagnostics.client-log-level: ERROR ssl.cipher-list: HIGH:!SSLv2 server.ssl: on client.ssl: on transport.address-family: inet nfs.disable: on performance.client-io-threads: off root@glusterVM1:~# gluster volume get logsscripts all Option Value ------ ----- cluster.lookup-unhashed on cluster.lookup-optimize on cluster.min-free-disk 10% cluster.min-free-inodes 5% cluster.rebalance-stats off cluster.subvols-per-directory (null) cluster.readdir-optimize off cluster.rsync-hash-regex (null) cluster.extra-hash-regex (null) cluster.dht-xattr-name trusted.glusterfs.dht cluster.randomize-hash-range-by-gfid off cluster.rebal-throttle normal cluster.lock-migration off cluster.force-migration off cluster.local-volume-name (null) cluster.weighted-rebalance on cluster.switch-pattern (null) cluster.entry-change-log on cluster.read-subvolume (null) cluster.read-subvolume-index -1 cluster.read-hash-mode 1 cluster.background-self-heal-count 8 cluster.metadata-self-heal on cluster.data-self-heal on cluster.entry-self-heal on cluster.self-heal-daemon on cluster.heal-timeout 600 cluster.self-heal-window-size 1 cluster.data-change-log on cluster.metadata-change-log on cluster.data-self-heal-algorithm full cluster.eager-lock on disperse.eager-lock on disperse.other-eager-lock on disperse.eager-lock-timeout 1 disperse.other-eager-lock-timeout 1 cluster.quorum-type auto cluster.quorum-count (null) cluster.choose-local true cluster.self-heal-readdir-size 1KB cluster.post-op-delay-secs 1 cluster.ensure-durability on cluster.consistent-metadata no cluster.heal-wait-queue-length 128 cluster.favorite-child-policy none cluster.full-lock yes cluster.stripe-block-size 128KB cluster.stripe-coalesce true diagnostics.latency-measurement off diagnostics.dump-fd-stats off diagnostics.count-fop-hits off diagnostics.brick-log-level INFO diagnostics.client-log-level ERROR diagnostics.brick-sys-log-level CRITICAL diagnostics.client-sys-log-level CRITICAL diagnostics.brick-logger (null) diagnostics.client-logger (null) diagnostics.brick-log-format (null) diagnostics.client-log-format (null) diagnostics.brick-log-buf-size 5 diagnostics.client-log-buf-size 5 diagnostics.brick-log-flush-timeout 120 diagnostics.client-log-flush-timeout 120 diagnostics.stats-dump-interval 0 diagnostics.fop-sample-interval 0 diagnostics.stats-dump-format json diagnostics.fop-sample-buf-size 65535 diagnostics.stats-dnscache-ttl-sec 86400 performance.cache-max-file-size 0 performance.cache-min-file-size 0 performance.cache-refresh-timeout 1 performance.cache-priority performance.cache-size 32MB performance.io-thread-count 16 performance.high-prio-threads 16 performance.normal-prio-threads 16 performance.low-prio-threads 16 performance.least-prio-threads 1 performance.enable-least-priority on performance.iot-watchdog-secs (null) performance.iot-cleanup-disconnected-reqsoff performance.iot-pass-through false performance.io-cache-pass-through false performance.cache-size 128MB performance.qr-cache-timeout 1 performance.cache-invalidation false performance.ctime-invalidation false performance.flush-behind on performance.nfs.flush-behind on performance.write-behind-window-size 1MB performance.resync-failed-syncs-after-fsyncoff performance.nfs.write-behind-window-size1MB performance.strict-o-direct off performance.nfs.strict-o-direct off performance.strict-write-ordering off performance.nfs.strict-write-ordering off performance.write-behind-trickling-writeson performance.aggregate-size 128KB performance.nfs.write-behind-trickling-writeson performance.lazy-open yes performance.read-after-open yes performance.open-behind-pass-through false performance.read-ahead-page-count 4 performance.read-ahead-pass-through false performance.readdir-ahead-pass-through false performance.md-cache-pass-through false performance.md-cache-timeout 1 performance.cache-swift-metadata true performance.cache-samba-metadata false performance.cache-capability-xattrs true performance.cache-ima-xattrs true performance.md-cache-statfs off performance.xattr-cache-list performance.nl-cache-pass-through false features.encryption off encryption.master-key (null) encryption.data-key-size 256 encryption.block-size 4096 network.frame-timeout 1800 network.ping-timeout 42 network.tcp-window-size (null) client.ssl on network.remote-dio disable client.event-threads 2 client.tcp-user-timeout 0 client.keepalive-time 20 client.keepalive-interval 2 client.keepalive-count 9 network.tcp-window-size (null) network.inode-lru-limit 16384 auth.allow * auth.reject (null) transport.keepalive 1 server.allow-insecure on server.root-squash off server.anonuid 65534 server.anongid 65534 server.statedump-path /var/run/gluster server.outstanding-rpc-limit 64 server.ssl on auth.ssl-allow * server.manage-gids off server.dynamic-auth on client.send-gids on server.gid-timeout 300 server.own-thread (null) server.event-threads 1 server.tcp-user-timeout 42 server.keepalive-time 20 server.keepalive-interval 2 server.keepalive-count 9 transport.listen-backlog 1024 ssl.own-cert (null) ssl.private-key (null) ssl.ca-list (null) ssl.crl-path (null) ssl.certificate-depth (null) ssl.cipher-list HIGH:!SSLv2 ssl.dh-param (null) ssl.ec-curve (null) transport.address-family inet performance.write-behind on performance.read-ahead on performance.readdir-ahead on performance.io-cache on performance.quick-read on performance.open-behind on performance.nl-cache off performance.stat-prefetch on performance.client-io-threads off performance.nfs.write-behind on performance.nfs.read-ahead off performance.nfs.io-cache off performance.nfs.quick-read off performance.nfs.stat-prefetch off performance.nfs.io-threads off performance.force-readdirp true performance.cache-invalidation false features.uss off features.snapshot-directory .snaps features.show-snapshot-directory off features.tag-namespaces off network.compression off network.compression.window-size -15 network.compression.mem-level 8 network.compression.min-size 0 network.compression.compression-level -1 network.compression.debug false features.default-soft-limit 80% features.soft-timeout 60 features.hard-timeout 5 features.alert-time 86400 features.quota-deem-statfs off geo-replication.indexing off geo-replication.indexing off geo-replication.ignore-pid-check off geo-replication.ignore-pid-check off features.quota off features.inode-quota off features.bitrot disable debug.trace off debug.log-history no debug.log-file no debug.exclude-ops (null) debug.include-ops (null) debug.error-gen off debug.error-failure (null) debug.error-number (null) debug.random-failure off debug.error-fops (null) nfs.enable-ino32 no nfs.mem-factor 15 nfs.export-dirs on nfs.export-volumes on nfs.addr-namelookup off nfs.dynamic-volumes off nfs.register-with-portmap on nfs.outstanding-rpc-limit 16 nfs.port 2049 nfs.rpc-auth-unix on nfs.rpc-auth-null on nfs.rpc-auth-allow all nfs.rpc-auth-reject none nfs.ports-insecure off nfs.trusted-sync off nfs.trusted-write off nfs.volume-access read-write nfs.export-dir nfs.disable on nfs.nlm on nfs.acl on nfs.mount-udp off nfs.mount-rmtab /var/lib/glusterd/nfs/rmtab nfs.rpc-statd /sbin/rpc.statd nfs.server-aux-gids off nfs.drc off nfs.drc-size 0x20000 nfs.read-size (1 * 1048576ULL) nfs.write-size (1 * 1048576ULL) nfs.readdir-size (1 * 1048576ULL) nfs.rdirplus on nfs.event-threads 1 nfs.exports-auth-enable (null) nfs.auth-refresh-interval-sec (null) nfs.auth-cache-ttl-sec (null) features.read-only off features.worm off features.worm-file-level off features.worm-files-deletable on features.default-retention-period 120 features.retention-mode relax features.auto-commit-period 180 storage.linux-aio off storage.batch-fsync-mode reverse-fsync storage.batch-fsync-delay-usec 0 storage.owner-uid -1 storage.owner-gid -1 storage.node-uuid-pathinfo off storage.health-check-interval 30 storage.build-pgfid off storage.gfid2path on storage.gfid2path-separator : storage.reserve 1 storage.health-check-timeout 10 storage.fips-mode-rchecksum off storage.force-create-mode 0000 storage.force-directory-mode 0000 storage.create-mask 0777 storage.create-directory-mask 0777 storage.max-hardlinks 100 storage.ctime off storage.bd-aio off config.gfproxyd off cluster.server-quorum-type off cluster.server-quorum-ratio 0 changelog.changelog off changelog.changelog-dir {{ brick.path }}/.glusterfs/changelogs changelog.encoding ascii changelog.rollover-time 15 changelog.fsync-interval 5 changelog.changelog-barrier-timeout 120 changelog.capture-del-path off features.barrier disable features.barrier-timeout 120 features.trash off features.trash-dir .trashcan features.trash-eliminate-path (null) features.trash-max-filesize 5MB features.trash-internal-op off cluster.enable-shared-storage disable cluster.write-freq-threshold 0 cluster.read-freq-threshold 0 cluster.tier-pause off cluster.tier-promote-frequency 120 cluster.tier-demote-frequency 3600 cluster.watermark-hi 90 cluster.watermark-low 75 cluster.tier-mode cache cluster.tier-max-promote-file-size 0 cluster.tier-max-mb 4000 cluster.tier-max-files 10000 cluster.tier-query-limit 100 cluster.tier-compact on cluster.tier-hot-compact-frequency 604800 cluster.tier-cold-compact-frequency 604800 features.ctr-enabled off features.record-counters off features.ctr-record-metadata-heat off features.ctr_link_consistency off features.ctr_lookupheal_link_timeout 300 features.ctr_lookupheal_inode_timeout 300 features.ctr-sql-db-cachesize 12500 features.ctr-sql-db-wal-autocheckpoint 25000 features.selinux on locks.trace off locks.mandatory-locking off cluster.disperse-self-heal-daemon enable cluster.quorum-reads no client.bind-insecure (null) features.timeout 45 features.failover-hosts (null) features.shard off features.shard-block-size 64MB features.shard-lru-limit 16384 features.shard-deletion-rate 100 features.scrub-throttle lazy features.scrub-freq biweekly features.scrub false features.expiry-time 120 features.cache-invalidation off features.cache-invalidation-timeout 60 features.leases off features.lease-lock-recall-timeout 60 disperse.background-heals 8 disperse.heal-wait-qlength 128 cluster.heal-timeout 600 dht.force-readdirp on disperse.read-policy gfid-hash cluster.shd-max-threads 1 cluster.shd-wait-qlength 1024 cluster.locking-scheme full cluster.granular-entry-heal no features.locks-revocation-secs 0 features.locks-revocation-clear-all false features.locks-revocation-max-blocked 0 features.locks-monkey-unlocking false features.locks-notify-contention no features.locks-notify-contention-delay 5 disperse.shd-max-threads 1 disperse.shd-wait-qlength 1024 disperse.cpu-extensions auto disperse.self-heal-window-size 1 cluster.use-compound-fops off performance.parallel-readdir off performance.rda-request-size 131072 performance.rda-low-wmark 4096 performance.rda-high-wmark 128KB performance.rda-cache-limit 10MB performance.nl-cache-positive-entry false performance.nl-cache-limit 10MB performance.nl-cache-timeout 60 cluster.brick-multiplex off cluster.max-bricks-per-process 0 disperse.optimistic-change-log on disperse.stripe-cache 4 cluster.halo-enabled False cluster.halo-shd-max-latency 99999 cluster.halo-nfsd-max-latency 5 cluster.halo-max-latency 5 cluster.halo-max-replicas 99999 cluster.halo-min-replicas 2 cluster.daemon-log-level INFO debug.delay-gen off delay-gen.delay-percentage 10% delay-gen.delay-duration 100000 delay-gen.enable disperse.parallel-writes on features.sdfs on features.cloudsync off features.utime off ctime.noatime on traitVM2:~# ps fax | grep '[_]save' 7305 ? D 2:57 [remote_save] 7801 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7802 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7803 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7804 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7805 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7806 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7807 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7808 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7809 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7810 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7811 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7812 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7813 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7814 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7815 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7816 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7817 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7818 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7819 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7820 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7821 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7822 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7823 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7824 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7825 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7826 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7827 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7828 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7829 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7830 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7831 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7832 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7833 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7834 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7835 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7836 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7837 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7838 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7839 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7840 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7841 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7842 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7843 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7844 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7845 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7846 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7847 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7848 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7849 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7850 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7851 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7852 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7853 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7854 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7855 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7856 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7857 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7858 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7859 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7860 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7861 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7862 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7863 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7864 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7865 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7866 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7867 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7868 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7869 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7870 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7871 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7872 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7873 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7874 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7875 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7876 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7877 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7878 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7879 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7880 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7881 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7882 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7883 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7884 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 7885 ? D 0:00 \_ /usr/bin/perl /home/prod/current/app/scripts/remote_save.pl 30000 _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx https://lists.gluster.org/mailman/listinfo/gluster-users