I am using glusterfs with two servers as a file server sharing files via samba and ctdb. I cannot use samba vfs gluster plugin, due to bug in current Centos version of samba. So I am mounting via fuse and exporting the volume to samba from the mount point.
Upon initial boot, the server where samba is exporting files climbs up to ~10GB RAM within a couple hours of use. From then on, it is a constant slow memory increase. In the past with gluster 3.8.x we had to reboot the servers at around 30 days . With gluster 4.1.6 we are getting up to 48 days, but RAM use is at 48GB out of 64GB. Is this normal?
The particular versions are below,
[root@ysmha01 home]# uptime
16:59:39 up 48 days, 9:56, 1 user, load average: 3.75, 3.17, 3.00
[root@ysmha01 home]# rpm -qa | grep gluster
centos-release-gluster41-1.0-3.el7.centos.noarch
glusterfs-server-4.1.6-1.el7.x86_64
glusterfs-api-4.1.6-1.el7.x86_64
centos-release-gluster-legacy-4.0-2.el7.centos.noarch
glusterfs-4.1.6-1.el7.x86_64
glusterfs-client-xlators-4.1.6-1.el7.x86_64
libvirt-daemon-driver-storage-gluster-3.9.0-14.el7_5.8.x86_64
glusterfs-fuse-4.1.6-1.el7.x86_64
glusterfs-libs-4.1.6-1.el7.x86_64
glusterfs-rdma-4.1.6-1.el7.x86_64
glusterfs-cli-4.1.6-1.el7.x86_64
samba-vfs-glusterfs-4.8.3-4.el7.x86_64
[root@ysmha01 home]# rpm -qa | grep samba
samba-common-tools-4.8.3-4.el7.x86_64
samba-client-libs-4.8.3-4.el7.x86_64
samba-libs-4.8.3-4.el7.x86_64
samba-4.8.3-4.el7.x86_64
samba-common-libs-4.8.3-4.el7.x86_64
samba-common-4.8.3-4.el7.noarch
samba-vfs-glusterfs-4.8.3-4.el7.x86_64
[root@ysmha01 home]# cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)
RAM view using top
Tasks: 398 total, 1 running, 397 sleeping, 0 stopped, 0 zombie
%Cpu(s): 7.0 us, 9.3 sy, 1.7 ni, 71.6 id, 9.7 wa, 0.0 hi, 0.8 si, 0.0 st
KiB Mem : 65772000 total, 1851344 free, 60487404 used, 3433252 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 3134316 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
9953 root 20 0 3727912 946496 3196 S 150.2 1.4 38626:27 glusterfsd
9634 root 20 0 48.1g 47.2g 3184 S 96.3 75.3 29513:55 glusterfs
14485 root 20 0 3404140 63780 2052 S 80.7 0.1 1590:13 glusterfs
[root@ysmha01 ~]# gluster v status export
Status of volume: export
Gluster process TCP Port RDMA Port Online Pid
------------------------------------------------------------------------------
Brick 10.0.1.7:/bricks/hdds/brick 49157 0 Y 13986
Brick 10.0.1.6:/bricks/hdds/brick 49153 0 Y 9953
Self-heal Daemon on localhost N/A N/A Y 14485
Self-heal Daemon on 10.0.1.7 N/A N/A Y 21934
Self-heal Daemon on 10.0.1.5 N/A N/A Y 4598
Task Status of Volume export
------------------------------------------------------------------------------
There are no active volume tasks
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