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IT IS NOT NORMAL. Something wrong with your
storage, FC switch or cards. Why , when you shutdown one node, second node
experience IO errors?
----- Original Message -----
Sent: Thursday, September 21, 2006 2:56
PM
Subject: [Ocfs2-users] ocfs2 fencing on
reboot of 2nd node
I'm performing some testing
with ocfs2 on 2 nodes with Red Hat AS4 Update 4 (x86_64) and (mulitpath
included in the 2.6 kernel) and am runing into some issues when cleanly
rebooting the 2nd node, while the 1st node is still up.
So if I do the following on the 2nd node, the 1st node
does not fence itself:
/etc/init.d/ocfs2 stop
/etc/init.d/o2cb stop
wait more
than 60 seconds
init 6
I get the following on the 1st node, but
everything is fine:
Sep 21 21:44:49 bbflgrid11 kernel: SCSI error : <0 0 0 12> return
code = 0x20000
Sep 21 21:44:49
bbflgrid11 kernel: end_request: I/O error, dev sdm, sector 192785
Sep 21 21:44:49 bbflgrid11 kernel:
device-mapper: dm-multipath: Failing path 8:192.
Sep 21 21:44:49 bbflgrid11 kernel: SCSI error : <0 0
0 14> return code = 0x20000
Sep 21
21:44:49 bbflgrid11 kernel: end_request: I/O error, dev sdo, sector
193297
Sep 21 21:44:49 bbflgrid11
kernel: device-mapper: dm-multipath: Failing path 8:224.
Sep 21 21:44:49 bbflgrid11 kernel: SCSI error : <0 0
0 13> return code = 0x20000
Sep 21
21:44:49 bbflgrid11 kernel: end_request: I/O error, dev sdn, sector
192785
Sep 21 21:44:49 bbflgrid11
kernel: device-mapper: dm-multipath: Failing path 8:208.
Sep 21 21:44:49 bbflgrid11 multipathd:
8:192: mark as failed
Sep 21 21:44:49
bbflgrid11 multipathd: mpath1: remaining active paths: 1
Sep 21 21:44:49 bbflgrid11 multipathd: 8:224: mark as
failed
Sep 21 21:44:49 bbflgrid11
multipathd: mpath3: remaining active paths: 1
Sep 21 21:44:49 bbflgrid11 multipathd: 8:208: mark as failed
Sep 21 21:44:49 bbflgrid11 multipathd:
mpath2: remaining active paths: 1
Sep
21 21:44:58 bbflgrid11 multipathd: 8:192: readsector0 checker reports path is
up
Sep 21 21:44:58 bbflgrid11
multipathd: 8:192: reinstated
Sep 21
21:44:58 bbflgrid11 multipathd: mpath1: remaining active paths: 2
Sep 21 21:44:58 bbflgrid11 multipathd: 8:208:
readsector0 checker reports path is up
Sep 21 21:44:58 bbflgrid11 multipathd: 8:208: reinstated
Sep 21 21:44:58 bbflgrid11 multipathd:
mpath2: remaining active paths: 2
Sep
21 21:44:58 bbflgrid11 multipathd: 8:224: readsector0 checker reports path is
up
Sep 21 21:44:58 bbflgrid11
multipathd: 8:224: reinstated
Sep 21
21:44:58 bbflgrid11 multipathd: mpath3: remaining active paths: 2
Sep 21 21:46:06 bbflgrid11 kernel: SCSI error
: <1 0 0 11> return code = 0x20000
Sep 21 21:46:06 bbflgrid11 kernel: end_request: I/O error, dev sdaa,
sector 1920
Sep 21 21:46:06 bbflgrid11
kernel: device-mapper: dm-multipath: Failing path 65:160.
Sep 21 21:46:06 bbflgrid11 multipathd: 65:160: mark as
failed
Sep 21 21:46:06 bbflgrid11
multipathd: mpath0: remaining active paths: 1
Sep 21 21:46:06 bbflgrid11 multipathd: 65:160: readsector0 checker
reports path is up
Sep 21 21:46:06
bbflgrid11 multipathd: 65:160: reinstated
Sep 21 21:46:06 bbflgrid11 multipathd: mpath0: remaining active paths:
2
Now if I do the
following on the 2nd node, the 1st node fences itself (same as above, except
dont wait 60 seconds after o2cb stop)
/etc/init.d/ocfs2 stop
/etc/init.d/o2cb stop
init
6
Node 1 logs the following and
fences itself, I have to power cycle the server to get it back, it doesn't
reboot or shutdown just hangs
Sep
21 21:28:00 bbflgrid11 kernel: SCSI error : <0 0 0 13> return code =
0x20000
Sep 21 21:28:00 bbflgrid11
kernel: end_request: I/O error, dev sdn, sector 192785
Sep 21 21:28:00 bbflgrid11 kernel: device-mapper:
dm-multipath: Failing path 8:208.
Sep
21 21:28:00 bbflgrid11 multipathd: 8:208: mark as failed
Sep 21 21:28:00 bbflgrid11 multipathd: mpath2:
remaining active paths: 1
Sep 21
21:28:00 bbflgrid11 kernel: SCSI error : <1 0 0 12> return code =
0x20000
Sep 21 21:28:00 bbflgrid11
kernel: end_request: I/O error, dev sdab, sector 192784
Sep 21 21:28:00 bbflgrid11 kernel: end_request: I/O
error, dev sdab, sector 192786
Sep 21
21:28:00 bbflgrid11 kernel: device-mapper: dm-multipath: Failing path
65:176.
Sep 21 21:28:00 bbflgrid11
kernel: SCSI error : <1 0 0 13> return code = 0x20000
Sep 21 21:28:00 bbflgrid11 kernel: end_request: I/O
error, dev sdac, sector 192785
Sep 21
21:28:00 bbflgrid11 kernel: device-mapper: dm-multipath: Failing path
65:192.
Sep 21 21:28:00 bbflgrid11
multipathd: 65:176: mark as failed
Sep
21 21:28:00 bbflgrid11 multipathd: mpath1: remaining active paths: 1
Sep 21 21:28:01 bbflgrid11 multipathd:
65:192: mark as failed
Sep 21 21:28:01
bbflgrid11 multipathd: mpath2: remaining active paths: 0
Sep 21 21:28:01 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:01 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:01 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:01 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:01 bbflgrid11 multipathd: 65:176:
readsector0 checker reports path is up
Sep 21 21:28:01 bbflgrid11 multipathd: 65:176: reinstated
Sep 21 21:28:01 bbflgrid11 multipathd:
mpath1: remaining active paths: 2
Sep
21 21:28:03 bbflgrid11 kernel: (4912,1):o2hb_bio_end_io:331 ERROR: IO Error
-5
Sep 21 21:28:03 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:03 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:03 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:05 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:05 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:05 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:05 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:07 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:07 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:07 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:07 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:09 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:09 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:09 bbflgrid11 kernel:
(4912,1):o2hb_bio_end_io:331 ERROR: IO Error -5
Sep 21 21:28:09 bbflgrid11 kernel:
(4912,1):o2hb_do_disk_heartbeat:973 ERROR: status = -5
Sep 21 21:28:09 bbflgrid11 multipathd: 8:208:
readsector0 checker reports path is up
Sep 21 21:28:09 bbflgrid11 multipathd: 8:208: reinstated
Sep 21 21:28:09 bbflgrid11 multipathd:
mpath2: remaining active paths: 1
Sep
21 21:28:10 bbflgrid11 multipathd: 65:192: readsector0 checker reports path is
up
Sep 21 21:28:10 bbflgrid11
multipathd: 65:192: reinstated
Sep 21
21:28:10 bbflgrid11 multipathd: mpath2: remaining active paths: 2
...
Index 14: took 0 ms to do submit_bio for read
Index 15: took 0 ms to do waiting for read
completion
(11,1):o2hb_stop_all_regions:1908 ERROR: stopping heartbeat on all
active regions
Kernel panic - not
syncing: ocfs2 is very sorry to be fencing this system by
panicing
Seems like if I wait
for the node 1 to heartbeat to node 2, with o2c down, before rebooting it's
fine, but if I reboot before node 1 has had a chance to hearbeat to node 2,
with o2cb down, it's panics.
Shawn E. Ruff
Senior Oracle DBA
Fiberlink
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