Hello, we are using GFS2 but sometimes there are processes hanging in D state: # ps axl | grep D F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND 0 0 14220 14219 20 0 19624 1916 - Ds ? 0:00 /usr/lib/postfix/master -t 0 0 14555 14498 20 0 16608 1716 - D+ /mnt/storage/openvz/root/129/dev/pts/0 0:00 apt-get install less 0 0 15068 15067 19 -1 36844 2156 - D<s ? 0:00 /usr/lib/postfix/master -t 0 0 16603 16602 19 -1 36844 2156 - D<s ? 0:00 /usr/lib/postfix/master -t 4 101 19534 13238 19 -1 33132 2984 - D< ? 0:00 smtpd -n smtp -t inet -u -c 4 101 19542 13238 19 -1 33116 2976 - D< ? 0:00 smtpd -n smtp -t inet -u -c 0 0 19735 13068 20 0 7548 880 - S+ pts/0 0:00 grep D dmesg shows this message many times: [11142.334229] INFO: task master:14220 blocked for more than 120 seconds. [11142.334266] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [11142.334310] master D ffff88032b644800 0 14220 14219 0x00000000 [11142.334315] ffff88062dd40000 0000000000000086 0000000000000000 ffffffffa02628d9 [11142.334318] ffff88017a517ef8 000000000000fa40 ffff88017a517fd8 0000000000016940 [11142.334322] 0000000000016940 ffff88032b644800 ffff88032b644af8 0000000b7a517cd8 [11142.334325] Call Trace: [11142.334340] [<ffffffffa02628d9>] ? gfs2_glock_put+0xf9/0x118 [gfs2] [11142.334347] [<ffffffffa0261db0>] ? gfs2_glock_holder_wait+0x0/0xd [gfs2] [11142.334353] [<ffffffffa0261db9>] ? gfs2_glock_holder_wait+0x9/0xd [gfs2] [11142.334358] [<ffffffff812e9897>] ? __wait_on_bit+0x41/0x70 [11142.334363] [<ffffffffa0261db0>] ? gfs2_glock_holder_wait+0x0/0xd [gfs2] [11142.334367] [<ffffffff812e9931>] ? out_of_line_wait_on_bit+0x6b/0x77 [11142.334370] [<ffffffff81066808>] ? wake_bit_function+0x0/0x23 [11142.334376] [<ffffffffa0261d9e>] ? gfs2_glock_wait+0x23/0x28 [gfs2] [11142.334383] [<ffffffffa026b2b0>] ? gfs2_flock+0x17c/0x1f9 [gfs2] [11142.334386] [<ffffffff810e735d>] ? virt_to_head_page+0x9/0x2a [11142.334389] [<ffffffff810e743e>] ? ub_slab_ptr+0x22/0x65 [11142.334393] [<ffffffff8112221b>] ? sys_flock+0xff/0x12a [11142.334396] [<ffffffff81010c12>] ? system_call_fastpath+0x16/0x1b Any idea what is going wrong? Do you need any more informations? Mario -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
