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Hi, I just started using Gluster today to build a new fileserver, and so far I'm impressed with the ease of set-up and configuration.
However, my cluster appears to be working normally, yet no updates are made on the actual filesystem. I change files on one node, and nothing shows up on the other.
Since I'm new to this, I don't know what kind of troubleshooting steps to take yet, but I've executed a few commands on the gluster cli:
root@nfs1:/nfs# gluster volume profile nfspool info
Brick: nfs1:/nfs
----------------
Cumulative Stats:
%-latency Avg-latency Min-Latency Max-Latency No. of calls Fop
--------- ----------- ----------- ----------- ------------ ----
7.32 30.00 us 30.00 us 30.00 us 1 GETXATTR
18.54 38.00 us 25.00 us 51.00 us 2 STATFS
74.15 76.00 us 61.00 us 94.00 us 4 LOOKUP
Duration: 7663 seconds
Data Read: 0 bytes
Data Written: 0 bytes
Interval 0 Stats:
%-latency Avg-latency Min-Latency Max-Latency No. of calls Fop
--------- ----------- ----------- ----------- ------------ ----
7.32 30.00 us 30.00 us 30.00 us 1 GETXATTR
18.54 38.00 us 25.00 us 51.00 us 2 STATFS
74.15 76.00 us 61.00 us 94.00 us 4 LOOKUP
Duration: 7663 seconds
Data Read: 0 bytes
Data Written: 0 bytes
Brick: nfs2:/nfs
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Cumulative Stats:
%-latency Avg-latency Min-Latency Max-Latency No. of calls Fop
--------- ----------- ----------- ----------- ------------ ----
7.11 31.00 us 31.00 us 31.00 us 1 GETXATTR
20.64 45.00 us 42.00 us 48.00 us 2 STATFS
72.25 78.75 us 64.00 us 91.00 us 4 LOOKUP
Duration: 7661 seconds
Data Read: 0 bytes
Data Written: 0 bytes
Interval 0 Stats:
%-latency Avg-latency Min-Latency Max-Latency No. of calls Fop
--------- ----------- ----------- ----------- ------------ ----
7.11 31.00 us 31.00 us 31.00 us 1 GETXATTR
20.64 45.00 us 42.00 us 48.00 us 2 STATFS
72.25 78.75 us 64.00 us 91.00 us 4 LOOKUP
Duration: 7661 seconds
Data Read: 0 bytes
Data Written: 0 bytes
root@nfs1:/nfs# gluster volume status
Status of volume: nfspool
Gluster process Port Online Pid
------------------------------------------------------------------------------
Brick nfs1:/nfs 49152 Y 2318
Brick nfs2:/nfs 49152 Y 1833
NFS Server on localhost 2049 Y 2882
Self-heal Daemon on localhost N/A Y 2335
NFS Server on nfs2 2049 Y 1985
Self-heal Daemon on nfs2 N/A Y 1953
There are no active volume tasks
gluster> peer probe nfs2
peer probe: success: host nfs2 port 24007 already in peer list
gluster> peer status
Number of Peers: 1
Hostname: nfs2
Uuid: ab13df7b-d7e7-46c9-8c43-c347b68a2a08
State: Peer in Cluster (Connected)
gluster> peer status nfs2
Usage: peer status
gluster> peer status
Number of Peers: 1
Hostname: nfs2
Uuid: ab13df7b-d7e7-46c9-8c43-c347b68a2a08
State: Peer in Cluster (Connected)
gluster> volume list
nfspool
gluster> volume sync
Usage: volume sync <HOSTNAME> [all|<VOLNAME>]
gluster> volume sync nfs2 all
Sync volume may make data inaccessible while the sync is in progress. Do you want to continue? (y/n) y
volume sync: success
To me, this looks like everything is working and normal. I can probe each peer from each other peer, and pings work as well. This tells me there shouldn't be any split-brain condition either. Yet:
root@nfs1:/nfs# ls
file1 file12 file15 file18 file20 file23 file3 file6 file9
file10 file13 file16 file19 file21 file24 file4 file7 lost+found
file11 file14 file17 file2 file22 file25 file5 file8
and on the other node:
root@nfs2:/nfs# ls
foo lost+found
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