Hi all, I'm having a strange issue with a machine included in a two-node cluster. I have several gfs2 filesystems that reside on top of clustered logical volumes in a DAS shared by the two nodes. In machine 2, each time I mount a gfs2 fs, load is incremented by 1, and decremented if I umount it. This machine is actually not very loaded, load should be around 0.1 Machine 1 is not affected, load does not change when I mount/umount
[r...@machine2 ~]# gfs2_tool list 253:15 MYCLUSTER:gfs201 253:14 MYCLUSTER:gfs202 253:39 MYCLUSTER:gfs203 253:38 MYCLUSTER:gfs204 253:49 MYCLUSTER:gfs205 253:33 MYCLUSTER:gfs206 253:28 MYCLUSTER:gfs207 253:24 MYCLUSTER:gfs208 253:55 MYCLUSTER:gfs209 [r...@machine2 ~]# w 11:29:51 up 1 day, 23:39, 1 user, load average: 9,00, 9,00, 8,63 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 x.x.x.x 11:19 0.00s 0.02s 0.00s w If I umount two of the filesystems: [r...@machine2 ~]# umount /my/mount/point/05 [r...@machine2 ~]# umount /my/mount/point/06 [r...@machine2 ~]# gfs2_tool list 253:15 MYCLUSTER:gfs201 253:14 MYCLUSTER:gfs202 253:39 MYCLUSTER:gfs203 253:38 MYCLUSTER:gfs204 253:28 MYCLUSTER:gfs207 253:24 MYCLUSTER:gfs208 253:55 MYCLUSTER:gfs209 Load is an average, so waiting a few minutes: [r...@machine2 ~]# w 11:36:07 up 1 day, 23:45, 1 user, load average: 7,35, 8,20, 8,41 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 x.x.x.x 11:19 0.00s 0.04s 0.04s -bash And machine one is not having the same behaviour: [r...@machine1 ~]# w 11:36:45 up 1 day, 23:37, 9 users, load average: 0,01, 0,04, 0,14 And it has mounted more filesystems: [r...@machine1 ~]# gfs2_tool list | wc -l 26 Both machines are rhel5.3 with the latest updates applied: Linux machine1 2.6.18-128.1.1.el5 #1 SMP Mon Jan 26 13:58:24 EST 2009 x86_64 x86_64 x86_64 GNU/Linux Linux machine2 2.6.18-128.1.1.el5 #1 SMP Mon Jan 26 13:58:24 EST 2009 x86_64 x86_64 x86_64 GNU/Linux cman-2.0.98-1.el5 lvm2-cluster-2.02.40-7.el5 gfs2-utils-0.1.53-1.el5 Any clue? Greetings, Juan Ramón Martín
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