Hi, Thanks for your reply. After you hinted that this problem may have caused due to using record size of length 4k. Then, I ran iozone test on a 5m file with record length 4k and to my surprise, the ceph system again hanged up. Then, I tried same with record lengths from 8k to 1m and everything worked fine for these cases with 5 MB file. Now, I have already executed the iozone test with 5G file and with record sizes from 8k to 16m and will see what happens!! --Udit Agarwal -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html