----- Original Message ----- > From: "Martin Toth" <snowmailer@xxxxxxxxx> > To: "Nux!" <nux@xxxxxxxxx> > Cc: "gluster-users" <gluster-users@xxxxxxxxxxx>, "Gluster Devel" <gluster-devel@xxxxxxxxxxx> > Sent: Monday, December 11, 2017 11:58:39 AM > Subject: Re: How large the Arbiter node? > > Hi, > > there is good suggestion here : > http://docs.gluster.org/en/latest/Administrator%20Guide/arbiter-volumes-and-quorum/#arbiter-bricks-sizing > Since the arbiter brick does not store file data, its disk usage will be > considerably less than the other bricks of the replica. The sizing of the > brick will depend on how many files you plan to store in the volume. A good > estimate will be 4kb times the number of files in the replica. You can see the explanation from the DEV here: http://lists.gluster.org/pipermail/gluster-users/2016-March/025732.html The 4k number was derived by adding 100 xattrs to a file: [root at ravi4 brick]# touch file [root at ravi4 brick]# ls -l file -rw-r--r-- 1 root root 0 Mar 8 12:54 file [root at ravi4 brick]# du file *0 file** * [root at ravi4 brick]# for i in {1..100} > do > setfattr -n user.value$i -v value$i file > done [root at ravi4 brick]# ll -l file -rw-r--r-- 1 root root 0 Mar 8 12:54 file [root at ravi4 brick]# du -h file *4.0K file** The 4k number may be a little conservative but in all of the clusters I help architect I follow that rule. HTH! -b > > BR, > > Martin > > > > > On 11 Dec 2017, at 17:43, Nux! < nux@xxxxxxxxx > wrote: > > Hi, > > I see gluster now recommends the use of an arbiter brick in "replica 2" > situations. > How large should this brick be? I understand only metadata is to be stored. > Let's say total storage usage will be 5TB of mixed size files. How large > should such a brick be? > > -- > Sent from the Delta quadrant using Borg technology! > > Nux! > www.nux.ro > _______________________________________________ > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > http://lists.gluster.org/mailman/listinfo/gluster-users > > > _______________________________________________ > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > http://lists.gluster.org/mailman/listinfo/gluster-users _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://lists.gluster.org/mailman/listinfo/gluster-users
