[Bugs] [Bug 1379935] SMB[md-cache Private Build]: Error messages in brick logs related to upcall_cache_invalidate gf_uuid_is_null

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1379935

Atin Mukherjee <amukherj at redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |amukherj at redhat.com



--- Comment #3 from Atin Mukherjee <amukherj at redhat.com> ---
(In reply to Prasad Desala from comment #1)
> Same issue is seen with private glusterfs build:
> 3.8.4-2.26.git0a405a4.el7rhgs.x86_64

Prasad - this is an upstream bug and no reference of downstream build should be
mentioned here. If required, please file a downstream bug to track the issue.
> 
> This issue is specific to md-cache upcall, with the setup in same state
> disabled below md-cache options (see gluster v info ouput for more info) and
> ERROR messages were not seen in brick logs. Enabling the md-cache started
> spamming the brick logs with the error messages.
> 
> Steps that were performed:
> 
> 1. Create a distributed replica volume and started it.
> 2. Enabled md-cache supported options to the volume. Please see below
> gluster v info for the more details on the md-cache enabled options.
> 3. Mounted volume on multiple clients. Simultaneosuly, from one client touch
> 10000 files and from another client create 10000 hardlinks for the same file.
> 4. Add few bricks and start rebalance.
> 5. Once the rebalance is completed, remove all the files on the mount point
> using "rm -rf".
> 6.  Check for brick logs, for the invalid argument messages.

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