[Gluster-users] The dht-layout interval is missing

[jifeng-call]

Hi All,

I have 6 servers that form a glusterfs 2x3 distributed replication volume, the details are as follows:


[root at node1 ~]# gluster volume info
Volume Name: ksvd_vol
Type: Distributed-Replicate
Volume ID: c9848daa-b06f-4f82-a2f8-1b425b8e869c
Status: Started
Snapshot Count: 0
Number of Bricks: 2 x 3 = 6
Transport-type: tcp
Bricks:
Brick1: node1:/export/kylin/ksvd
Brick2: node2:/export/kylin/ksvd
Brick3: node3:/export/kylin/ksvd
Brick4: node4:/export/kylin/ksvd
Brick5: node5:/export/kylin/ksvd
Brick6: node6:/export/kylin/ksvd
Options Reconfigured:
diagnostics.client-log-level: DEBUG
diagnostics.brick-log-level: DEBUG
performance.client-io-threads: off
nfs.disable: on
transport.address-family: inet
cluster.quorum-type: auto


Restart 6 servers at a time, the server automatically mounts the ksvd_vol volume to the / home / kylin-ksvd directory during the startup process：


[root at node1 ~]# df -h | grep ksvd_vol
node1:/ksvd_vol            4.5T  362G  4.1T    9% /home/kylin-ksvd


Failed to create a file in the glusterfs mount directory of node3, the log shows the error as follows (the files created by other servers are normal)：


[2020-05-29 05:55:03.065656] E [MSGID: 109011] [dht-common.c:8683:dht_create] 0-ksvd_vol-dht: no subvolume in layout for path=/.ksvd.time.405fa8a6-575d-4474-a97f-a107cbf1c673.18512
[2020-05-29 05:55:03.065719] W [fuse-bridge.c:2122:fuse_create_cbk] 0-glusterfs-fuse: 2454790: /.ksvd.time.405fa8a6-575d-4474-a97f-a107cbf1c673.18512 => -1 (输入/输出错误)
[2020-05-29 05:55:03.680303] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696
[2020-05-29 05:55:04.687456] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 491618322
[2020-05-29 05:55:04.688612] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696
[2020-05-29 05:55:05.694446] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696
[2020-05-29 05:55:05.830555] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 491618322
[2020-05-29 05:55:06.700423] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696
[2020-05-29 05:55:07.706536] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696
[2020-05-29 05:55:07.833049] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 491618322
[2020-05-29 05:55:08.712128] W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696
The message "W [MSGID: 109011] [dht-layout.c:186:dht_layout_search] 0-ksvd_vol-dht: no subvolume for hash (value) = 1738969696" repeated 2 times between [2020-05-29 05:55:08.712128] and [2020-05-29 05:55:09.718541]


The pathinfo information in the / home / kylin-ksvd directory is displayed as follows:


[root at node3 kylin-ksvd]# getfattr -d -m .  -n trusted.glusterfs.pathinfo /home/kylin-ksvd/
getfattr: Removing leading '/' from absolute path names
# file: home/kylin-ksvd/
trusted.glusterfs.pathinfo="((<DISTRIBUTE:ksvd_vol-dht> (<REPLICATE:ksvd_vol-replicate-0> <POSIX(/export/kylin/ksvd):node2:/export/kylin/ksvd/> <POSIX(/export/kylin/ksvd):node3:/export/kylin/ksvd/> <POSIX(/export/kylin/ksvd):node1:/export/kylin/ksvd/>) (<REPLICATE:ksvd_vol-replicate-1> <POSIX(/export/kylin/ksvd):node5:/export/kylin/ksvd/> <POSIX(/export/kylin/ksvd):node6:/export/kylin/ksvd/> <POSIX(/export/kylin/ksvd):node4:/export/kylin/ksvd/>)) (ksvd_vol-dht-layout (ksvd_vol-replicate-0 0 0) (ksvd_vol-replicate-1 3539976838 4294967295)))"


It can be seen from the above information that ksvd_vol-dht-layout is missing the interval 0 to 3539976837


After umount, remounting returned to normal ... What is the reason?


Best regards
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20200529/1ec7d873/attachment.html>