[Gluster-users] Rebalance task fails

[Szymon Miotk]

Hello everyone,


I have problem rebalancing Gluster volume.
Gluster version is 3.7.3.
My 1x3 replicated volume become full, so I've added three more bricks
to make it 2x3 and wanted to rebalance.
But every time I start rebalancing, it fails immediately.
Rebooting Gluster nodes doesn't help.

# gluster volume rebalance  gsae_artifactory_cluster_storage start
volume rebalance: gsae_artifactory_cluster_storage: success: Rebalance
on gsae_artifactory_cluster_storage has been started successfully. Use
rebalance status command to check status of the rebalance process.
ID: b22572ff-7575-4557-8317-765f7e52d445

# gluster volume rebalance  gsae_artifactory_cluster_storage status
                                    Node Rebalanced-files
size       scanned      failures       skipped               status
run time in secs
                               ---------      -----------
-----------   -----------   -----------   -----------
------------     --------------
                               localhost                0
0Bytes             0             0             0               failed
             0.00
                             10.239.40.9                0
0Bytes             0             0             0               failed
             0.00
                             10.239.40.8                0
0Bytes             0             0             0               failed
             0.00
volume rebalance: gsae_artifactory_cluster_storage: success:

The messages in logfiles mention 'failed to get index':
[2017-07-07 10:07:18.230202] E [MSGID: 106062]
[glusterd-utils.c:7997:glusterd_volume_rebalance_use_rsp_dict]
0-glusterd: failed to get index

and then the rebalance process crashes:
pending frames:
frame : type(0) op(0)
frame : type(0) op(0)
frame : type(0) op(0)
patchset: git://git.gluster.com/glusterfs.git
signal received: 4
time of crash:
2017-07-07 10:07:23
configuration details:
argp 1
backtrace 1
dlfcn 1
libpthread 1
llistxattr 1
setfsid 1
spinlock 1
epoll.h 1
xattr.h 1
st_atim.tv_nsec 1
package-string: glusterfs 3.7.3
/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(_gf_msg_backtrace_nomem+0x92)[0x7f24de214502]
/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(gf_print_trace+0x31d)[0x7f24de23059d]
/lib/x86_64-linux-gnu/libc.so.6(+0x36d40)[0x7f24dd612d40]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11f6b)[0x7f24dd9b2f6b]
/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(inode_ref+0x19)[0x7f24de234e69]
/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(loc_copy+0x4a)[0x7f24de21291a]
/usr/lib/x86_64-linux-gnu/glusterfs/3.7.3/xlator/cluster/distribute.so(dht_local_init+0x4b)[0x7f24d851f51b]
/usr/lib/x86_64-linux-gnu/glusterfs/3.7.3/xlator/cluster/distribute.so(dht_lookup+0x91)[0x7f24d8550521]
/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(syncop_lookup+0x1a2)[0x7f24de258fc2]
/usr/lib/x86_64-linux-gnu/glusterfs/3.7.3/xlator/cluster/distribute.so(gf_defrag_fix_layout+0x87)[0x7f24d85289e7]
/usr/lib/x86_64-linux-gnu/glusterfs/3.7.3/xlator/cluster/distribute.so(gf_defrag_start_crawl+0x6d3)[0x7f24d8529ce3]
/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(synctask_wrap+0x12)[0x7f24de255822]
/lib/x86_64-linux-gnu/libc.so.6(+0x498b0)[0x7f24dd6258b0]


Anybody has a clue how to fix 'failed to get index' error?

Thank you in advance!
Szymon Miotk