[Bugs] [Bug 1722390] New: "All subvolumes are down" when all bricks are online

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1722390

            Bug ID: 1722390
           Summary: "All subvolumes are down" when all bricks are online
           Product: GlusterFS
           Version: 4.1
          Hardware: x86_64
                OS: Linux
            Status: NEW
         Component: glusterd
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: ryan at magenta.tv
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Created attachment 1582578
  --> https://bugzilla.redhat.com/attachment.cgi?id=1582578&action=edit
Samba client log

Description of problem:
Gluster VFS client logs print ' E [MSGID: 108006]
[afr-common.c:5413:__afr_handle_child_down_event] 0-mcv01-replicate-8: All
subvolumes are down. Going offline until at least one of them comes back up.'
repeatedly. When checking 'gluster vol status' all bricks are online. There are
no obvious errors in the glusterd logs. The errors go back months, from when we
had a failed storage array, where all the bricks had to be removed and
replaced.

Volume is a distributed-replicated (x2) type.

In a few of the brick logs, there are a few RPC errors.
Other than the logs being flooded with this message, the cluster seems to be
operating normally.
Iperf tests between the nodes does not flag any issues, with 0 TCP retries on
all.


Version-Release number of selected component (if applicable):
Gluster 4.1.8
Samba 4.9.4

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