[Gluster-users] 0-client_t: null client [Invalid argument] & high CPU usage (Gluster 3.12)

[Sam McLeod]

FYI - I've been testing the Gluster 3.12.1 packages with the help of the SIG maintainer and I can confirm that the logs are no longer being filled with NFS or null client errors after the upgrade.

--
Sam McLeod 
@s_mcleod
https://smcleod.net

> On 18 Sep 2017, at 10:14 pm, Sam McLeod <mailinglists at smcleod.net> wrote:
> 
> Thanks Milind,
> 
> Yes I’m hanging out for CentOS’s Storage / Gluster SIG to release the packages for 3.12.1, I can see the packages were built a week ago but they’re still not on the repo :(
> 
> --
> Sam
> 
> On 18 Sep 2017, at 9:57 pm, Milind Changire <mchangir at redhat.com <mailto:mchangir at redhat.com>> wrote:
> 
>> Sam,
>> You might want to give glusterfs-3.12.1 a try instead.
>> 
>> 
>> 
>> On Fri, Sep 15, 2017 at 6:42 AM, Sam McLeod <mailinglists at smcleod.net <mailto:mailinglists at smcleod.net>> wrote:
>> Howdy,
>> 
>> I'm setting up several gluster 3.12 clusters running on CentOS 7 and have having issues with glusterd.log and glustershd.log both being filled with errors relating to null client errors and client-callback functions.
>> 
>> They seem to be related to high CPU usage across the nodes although I don't have a way of confirming that (suggestions welcomed!).
>> 
>> 
>> in /var/log/glusterfs/glusterd.log:
>> 
>> csvc_request_init+0x7f) [0x7f382007b93f] -->/lib64/libglusterfs.so.0(gf_client_ref+0x179) [0x7f3820315e59] ) 0-client_t: null client [Invalid argument]
>> [2017-09-15 00:54:14.454022] E [client_t.c:324:gf_client_ref] (-->/lib64/libgfrpc.so.0(rpcsvc_request_create+0xf8) [0x7f382007e7e8] -->/lib64/libgfrpc.so.0(rpcsvc_request_init+0x7f) [0x7f382007b93f] -->/lib64/libglusterfs.so.0(gf_client_ref+0x179) [0x7f3820315e59] ) 0-client_t: null client [Invalid argument]
>> 
>> 
>> This is repeated _thousands_ of times and is especially noisey when any node is running gluster volume set <volname> <option> <value>.
>> 
>> and I'm unsure if it's related but in /var/log/glusterfs/glustershd.log:
>> 
>> [2017-09-15 00:36:21.654242] W [MSGID: 114010] [client-callback.c:28:client_cbk_fetchspec] 0-my_volume_name-client-0: this function should not be called
>> 
>> 
>> ---
>> 
>> 
>> Cluster configuration:
>> 
>> Gluster 3.12
>> CentOS 7.4
>> Replica 3, Arbiter 1
>> NFS disabled (using Kubernetes with the FUSE client)
>> Each node is 8 Xeon E5-2660 with 16GB RAM virtualised on XenServer 7.2
>> 
>> 
>> root at int-gluster-03:~  # gluster get
>> glusterd state dumped to /var/run/gluster/glusterd_state_20170915_110532
>> 
>> [Global]
>> MYUUID: 0b42ffb2-217a-4db6-96bf-cf304a0fa1ae
>> op-version: 31200
>> 
>> [Global options]
>> cluster.brick-multiplex: enable
>> 
>> [Peers]
>> Peer1.primary_hostname: int-gluster-02.fqdn.here
>> Peer1.uuid: e614686d-0654-43c9-90ca-42bcbeda3255
>> Peer1.state: Peer in Cluster
>> Peer1.connected: Connected
>> Peer1.othernames:
>> Peer2.primary_hostname: int-gluster-01.fqdn.here
>> Peer2.uuid: 9b0c82ef-329d-4bd5-92fc-95e2e90204a6
>> Peer2.state: Peer in Cluster
>> Peer2.connected: Connected
>> Peer2.othernames:
>> 
>> (Then volume options are listed)
>> 
>> 
>> ---
>> 
>> 
>> Volume configuration:
>> 
>> root at int-gluster-03:~ # gluster volume info my_volume_name
>> 
>> Volume Name: my_volume_name
>> Type: Replicate
>> Volume ID: 6574a963-3210-404b-97e2-bcff0fa9f4c9
>> Status: Started
>> Snapshot Count: 0
>> Number of Bricks: 1 x 3 = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: int-gluster-01.fqdn.here:/mnt/gluster-storage/my_volume_name
>> Brick2: int-gluster-02.fqdn.here:/mnt/gluster-storage/my_volume_name
>> Brick3: int-gluster-03.fqdn.here:/mnt/gluster-storage/my_volume_name
>> Options Reconfigured:
>> performance.stat-prefetch: true
>> performance.parallel-readdir: true
>> performance.client-io-threads: true
>> network.ping-timeout: 5
>> diagnostics.client-log-level: WARNING
>> diagnostics.brick-log-level: WARNING
>> cluster.readdir-optimize: true
>> cluster.lookup-optimize: true
>> transport.address-family: inet
>> nfs.disable: on
>> cluster.brick-multiplex: enable
>> 
>> 
>> --
>> Sam McLeod
>> @s_mcleod
>> https://smcleod.net <https://smcleod.net/>
>> 
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>> 
>> 
>> 
>> -- 
>> Milind
>> 
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