Re: major problems with Samba

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On Mon, 2019-10-07 at 11:52 +0100, lejeczek wrote:
> hi everyone,
> 
> I do not suppose it is a matter of tweaking Gluster(or Samba) as
> these
> problems I think started appearing after upgrade of Samba
> (samba-4.9.1-6.el7.x86_64) and/or Gluster(glusterfs-6.5-1.el7.x86_64)

Can you paste the output of `testparm -s`?

> How it manifests it that Samba operations that a user performs are
> incredibly slow. To create a new file(via right-click in Windows)
> takes more then dozen of seconds, sometimes fails, the same with
> renaming files, etc.
> 
> At the same time I samba's part of glusterfs log I see:
> 
> [2019-10-07 10:42:02.252880] D [logging.c:2006:_gf_msg_internal]
> 0-logging-infra: Buffer overflow of a buffer whose size limit is 5.
> About to flush least recently used log message to disk
> The message "T [MSGID: 0] [md-cache.c:678:is_mdc_key_satisfied]
> 0-md-cache: xattr key glusterfs.parent-entrylk doesn't satisfy
> caching
> requirements" repeated 4 times between [2019-10-07 10:42:02.252788]
> and
> [2019-10-07 10:42:02.252874]
> [2019-10-07 10:42:02.252878] T [MSGID: 0]
> [md-cache.c:678:is_mdc_key_satisfied] 0-md-cache: xattr key
> trusted.glusterfs.dht doesn't satisfy caching requirements
> [2019-10-07 10:42:02.252981] D [logging.c:2006:_gf_msg_internal]
> 0-logging-infra: Buffer overflow of a buffer whose size limit is 5.
> About to flush least recently used log message to disk
> The message "T [MSGID: 0] [md-cache.c:678:is_mdc_key_satisfied]
> 0-md-cache: xattr key trusted.glusterfs.dht doesn't satisfy caching
> requirements" repeated 4 times between [2019-10-07 10:42:02.252878]
> and
> [2019-10-07 10:42:02.252974]
> [2019-10-07 10:42:02.252978] T [MSGID: 0]
> [md-cache.c:678:is_mdc_key_satisfied] 0-md-cache: xattr key
> trusted.afr.GROUP_WORK-client-3 doesn't satisfy caching requirements
> [2019-10-07 10:42:02.253059] D [logging.c:2006:_gf_msg_internal]
> 0-logging-infra: Buffer overflow of a buffer whose size limit is 5.
> About to flush least recently used log message to disk
> The message "T [MSGID: 0] [md-cache.c:678:is_mdc_key_satisfied]
> 0-md-cache: xattr key trusted.afr.GROUP_WORK-client-3 doesn't satisfy
> caching requirements" repeated 4 times between [2019-10-07
> 10:42:02.252978] and [2019-10-07 10:42:02.253052]
> [2019-10-07 10:42:02.253056] T [MSGID: 0]
> [md-cache.c:678:is_mdc_key_satisfied] 0-md-cache: xattr key link-
> count
> doesn't satisfy caching requirements
> [2019-10-07 10:42:02.253140] D [logging.c:2006:_gf_msg_internal]
> 0-logging-infra: Buffer overflow of a buffer whose size limit is 5.
> About to flush least recently used log message to disk
> The message "T [MSGID: 0] [md-cache.c:678:is_mdc_key_satisfied]
> 0-md-cache: xattr key link-count doesn't satisfy caching
> requirements"
> repeated 4 times between [2019-10-07 10:42:02.253056] and [2019-10-07
> 10:42:02.253131]
> [2019-10-07 10:42:02.253138] T [MSGID: 0]
> [md-cache.c:792:mdc_inode_xatt_set] 0-md-cache: xatt cache set for
> (00000000-0000-0000-0000-000000000001) time:1570444922

I don't see any ERROR log entries but just TRACE and DEBUG messages.
Please provide the output of `gluster volume info <VOLNAME>`.

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