[Gluster-users] remove_me files building up

Mon Jul 3 17:28:30 UTC 2023

Hi,
you mentioned that the arbiter bricks run out of inodes.Are you using XFS ?Can you provide the xfs_info of each brick ?
Best Regards,Strahil Nikolov 

  On Sat, Jul 1, 2023 at 19:41, Liam Smith<liam.smith at ek.co> wrote:    Hi,
We're running a cluster with two data nodes and one arbiter, and have sharding enabled.
We had an issue a while back where one of the server's crashed, we got the server back up and running and ensured that all healing entries cleared, and also increased the server spec (CPU/Mem) as this seemed to be the potential cause.
Since then however, we've seen some strange behaviour, whereby a lot of 'remove_me' files are building up under `/data/glusterfs/gv1/brick2/brick/.shard/.remove_me/` and `/data/glusterfs/gv1/brick3/brick/.shard/.remove_me/`. This is causing the arbiter to run out of space on brick2 and brick3, as the remove_me files are constantly increasing.
brick1 appears to be fine, the disk usage increases throughout the day and drops down in line with the trend of the brick on the data nodes. We see the disk usage increase and drop throughout the day on the data nodes for brick2 and brick3 as well, but while the arbiter follows the same trend of the disk usage increasing, it doesn't drop at any point.
This is the output of some gluster commands, occasional heal entries come and go:

root at uk3-prod-gfs-arb-01:~# gluster volume info gv1
Volume Name: gv1Type: Distributed-ReplicateVolume ID: d3d1fdec-7df9-4f71-b9fc-660d12c2a046Status: StartedSnapshot Count: 0Number of Bricks: 3 x (2 + 1) = 9Transport-type: tcpBricks:Brick1: uk1-prod-gfs-01:/data/glusterfs/gv1/brick1/brickBrick2: uk2-prod-gfs-01:/data/glusterfs/gv1/brick1/brickBrick3: uk3-prod-gfs-arb-01:/data/glusterfs/gv1/brick1/brick (arbiter)Brick4: uk1-prod-gfs-01:/data/glusterfs/gv1/brick3/brickBrick5: uk2-prod-gfs-01:/data/glusterfs/gv1/brick3/brickBrick6: uk3-prod-gfs-arb-01:/data/glusterfs/gv1/brick3/brick (arbiter)Brick7: uk1-prod-gfs-01:/data/glusterfs/gv1/brick2/brickBrick8: uk2-prod-gfs-01:/data/glusterfs/gv1/brick2/brickBrick9: uk3-prod-gfs-arb-01:/data/glusterfs/gv1/brick2/brick (arbiter)Options Reconfigured:cluster.entry-self-heal: oncluster.metadata-self-heal: oncluster.data-self-heal: onperformance.client-io-threads: offstorage.fips-mode-rchecksum: ontransport.address-family: inetcluster.lookup-optimize: offperformance.readdir-ahead: offcluster.readdir-optimize: offcluster.self-heal-daemon: enablefeatures.shard: enablefeatures.shard-block-size: 512MBcluster.min-free-disk: 10%cluster.use-anonymous-inode: yes

root at uk3-prod-gfs-arb-01:~# gluster peer status
Number of Peers: 2
Hostname: uk2-prod-gfs-01Uuid: 2fdfa4a2-195d-4cc5-937c-f48466e76149State: Peer in Cluster (Connected)
Hostname: uk1-prod-gfs-01Uuid: 43ec93d1-ad83-4103-aea3-80ded0903d88State: Peer in Cluster (Connected)

root at uk3-prod-gfs-arb-01:~# gluster volume heal gv1 info
Brick uk1-prod-gfs-01:/data/glusterfs/gv1/brick1/brick<gfid:5b57e1f6-3e3d-4334-a0db-b2560adae6d1>Status: ConnectedNumber of entries: 1
Brick uk2-prod-gfs-01:/data/glusterfs/gv1/brick1/brickStatus: ConnectedNumber of entries: 0
Brick uk3-prod-gfs-arb-01:/data/glusterfs/gv1/brick1/brickStatus: ConnectedNumber of entries: 0
Brick uk1-prod-gfs-01:/data/glusterfs/gv1/brick3/brickStatus: ConnectedNumber of entries: 0
Brick uk2-prod-gfs-01:/data/glusterfs/gv1/brick3/brickStatus: ConnectedNumber of entries: 0
Brick uk3-prod-gfs-arb-01:/data/glusterfs/gv1/brick3/brickStatus: ConnectedNumber of entries: 0
Brick uk1-prod-gfs-01:/data/glusterfs/gv1/brick2/brickStatus: ConnectedNumber of entries: 0
Brick uk2-prod-gfs-01:/data/glusterfs/gv1/brick2/brick<gfid:6ba9c472-9232-4b45-b12f-a1232d6f4627>/.shard/.remove_me<gfid:0f042518-248d-426a-93f4-cfaa92b6ef3e>Status: ConnectedNumber of entries: 3
Brick uk3-prod-gfs-arb-01:/data/glusterfs/gv1/brick2/brick<gfid:6ba9c472-9232-4b45-b12f-a1232d6f4627>/.shard/.remove_me<gfid:0f042518-248d-426a-93f4-cfaa92b6ef3e>Status: ConnectedNumber of entries: 3

root at uk3-prod-gfs-arb-01:~# gluster volume get all cluster.op-versionOption                                   Value------                                   -----cluster.op-version                       100000

We're not sure if this is a potential bug or if something's corrupted that we don't have visibility of, so any pointers/suggestions about how to approach this would be appreciated. 
Thanks,Liam
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