[Gluster-users] error "Not able to add to index" in brick logs

[Stefano Bagnara]

in my /var/log/gluster/bricks/mybrick-path.log I get thousands of those errors:
------
[2017-11-22 21:06:23.768354] E [MSGID: 138003]
[index.c:624:index_link_to_base] 0-sharedvol-index:
/home/sharedvol/.glusterfs/indices/xattrop/0b852dad-b332-4bfe-a38b-976729ee46a2:
Not able to add to index [Troppi collegamenti]
The message "E [MSGID: 138003] [index.c:624:index_link_to_base]
0-sharedvol-index:
/home/sharedvol/.glusterfs/indices/xattrop/0b852dad-b332-4bfe-a38b-976729ee46a2:
Not able to add to index [Troppi collegamenti]" repeated 29 times
between [2017-11-22 21:06:23.768354] and [2017-11-22 21:06:23.776437]
--------

"Troppi collegamenti" is the italian for "too many links", I guess
this is an underlying OS filesystem error preventing gluster from
doing something.

What does this mean?

find /home/sharedvol/.glusterfs/indices/xattrop |wc -l
65001

My brick is on ext4. Gluster is 3.12.1-2 on Centos7, an "old style"
replica 2 on 2 bricks. I'm pushing millions of files from another
gluster cluster (that is on 3.6 and i'm unable to upgrade, so I
decided to create a new cluster and move data).

Stefano