Hi 2 all ! I have problems with concurrent filesystem actions on a ocfs2 filesystem which is mounted by 2 nodes. OS=RH5ES and OCFS2=1.2.6 F.e.: If I have a LV called testlv which is mounted on /mnt on both servers and I do a "dd if=/dev/zero of=/mnt/test.a bs=1024 count=1000000" on server 1 and do at the same time a du -hs /mnt/test.a it takes about 5 seconds for du -hs to execute: 270M test.a
real 0m3.627s user 0m0.000s sys 0m0.002s or even longer. If i do a du -hs ond a file which is not written by another server its fast: 977M test.b real 0m0.001s user 0m0.001s sys 0m0.000s If I write 2 different files from both servers to the same LV I get only 2.8mb/sec. If I write 2 different files from both servers to a different LV (testlv,test2lv) then I get about 30mb/sec on each write (so 60mb/sec combined which is very good). does anyone has an idea what could be wrong. Are there any mount options for ocfs2 which could help me? is this a lvm2 or ocfs2 problem (locking,blocking,.... issue) ? Any help will be appriciated. yours Arnold -- Arnold Maderthaner J4Care Inc. _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users
