Hello,
currently I'm trying to set up a SuSE 10.1 box with two qlogic adapters
("suse shipped" qla2xxx module), each one is connected to one of our two
emc clariions that are offering 50GB disks. I have four paths to each
clariion. When I start the multipath config init script "boot.multipath"
the script hangs and never returns, no chance to abort. I put a lot of
debug stuff here so maybe someone can tell me why the script (or better
said kpartx) hangs (see the following "ps ax").
I guess one of the kernel modules is waiting for some init stuff of the
disks because I even can't "kill -9 <kpartx>".
The multipath.conf is mostly derived from a pdf by emc. The multipaths
{} section is written by me.
What does the following message from multipath mean:
sdX: checker msg is "emc_clariion_checker: Path not correctly configured
for failover"
What do I have to do to resolve this "problem"?
Ciao
Daniel
btw.: I also tried using the latest qlogic drivers, same result.
# cat /etc/multipath.conf
blacklist {
wwid 20010b9fd080b7321
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z][[0-9]*]"
devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]"
}
devices {
device {
vendor "EMC "
product "SYMMETRIX"
path_grouping_policy multibus
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
path_selector "round-robin 0"
features "0"
hardware_handler "0"
failback immediate
}
device {
vendor "DGC"
product "*"
path_grouping_policy group_by_prio
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout "/sbin/mpath_prio_emc /dev/%n"
hardware_handler "1 emc"
features "1 queue_if_no_path"
no_path_retry 300
path_checker emc_clariion
failback immediate
}
}
multipaths {
multipath {
wwid
3600601608d1e170090af86321308db11
alias san1
path_grouping_policy failover
failback immediate
}
multipath {
wwid
360060160a1f4160072ee88ba1208db11
alias san2
path_grouping_policy failover
failback immediate
}
}
# uname -r
2.6.16.13-4-smp
# dmsetup version
Library version: 1.02.03 (2006-02-08)
Driver version: 4.5.0
# lsscsi
[0:0:0:0] disk DGC RAID 5 0219 /dev/sda
[0:0:1:0] disk DGC LUNZ 0219 /dev/sdb
[0:0:2:0] disk DGC LUNZ 0219 /dev/sdc
[0:0:3:0] disk DGC LUNZ 0219 /dev/sdd
[1:0:0:0] disk DGC RAID 5 0219 /dev/sde
[1:0:1:0] disk DGC LUNZ 0219 /dev/sdf
[1:0:2:0] disk DGC LUNZ 0219 /dev/sdg
[1:0:3:0] disk DGC LUNZ 0219 /dev/sdh
# ps ax
...
3568 pts/0 S+ 0:00 /bin/sh /etc/init.d/boot.multipath start
3584 ? S< 0:00 [kmpathd/0]
3585 ? S< 0:00 [kmpathd/1]
3620 ? S< 0:00 /sbin/udevd --daemon
3621 ? D< 0:00 /sbin/vol_id --export /dev/.tmp-253-1
3625 ? S< 0:00 /sbin/udevd --daemon
3626 ? D< 0:00 /sbin/vol_id --export /dev/.tmp-253-2
3630 pts/0 S+ 0:00 /sbin/dmsetup ls --target multipath --exec
/sbin/kpartx -a -p -part
3632 pts/0 D+ 0:00 /sbin/kpartx -a -p -part
/dev/mapper/350060160b02217df50060160b02217df
# lsmod | grep dm
dm_round_robin 7168 1
dm_emc 9472 1
dm_multipath 22152 3 dm_round_robin,dm_emc
dm_mod 57936 9 dm_multipath
# multipath -d v4 (after starting the config script!)
sda: checker msg is "emc_clariion_checker: Path not correctly configured
for failover"
sde: checker msg is "emc_clariion_checker: Path not correctly configured
for failover"
# multipath -ll (after starting the config script!)
sda: checker msg is "emc_clariion_checker: Path not correctly configured
for failover"
sde: checker msg is "emc_clariion_checker: Path not correctly configured
for failover"
350060160b02217df50060160b02217df
[size=1 GB][features=1 queue_if_no_path][hwhandler=1 emc]
\_ round-robin 0 [prio=3][enabled]
\_ 0:0:2:0 sdc 8:32 [failed][ready]
\_ 0:0:3:0 sdd 8:48 [failed][ready]
\_ 1:0:1:0 sdf 8:80 [failed][ready]
350060160b022151c50060160b022151c
[size=1 GB][features=1 queue_if_no_path][hwhandler=1 emc]
\_ round-robin 0 [prio=3][enabled]
\_ 0:0:1:0 sdb 8:16 [failed][ready]
\_ 1:0:2:0 sdg 8:96 [failed][ready]
\_ 1:0:3:0 sdh 8:112 [failed][ready]
san2 (360060160a1f4160072ee88ba1208db11)
[size=50 GB][features=1 queue_if_no_path][hwhandler=1 emc]
\_ round-robin 0 [prio=0][active]
\_ 1:0:0:0 sde 8:64 [active][faulty]
san1 (3600601608d1e170090af86321308db11)
[size=50 GB][features=1 queue_if_no_path][hwhandler=1 emc]
\_ round-robin 0 [prio=0][enabled]
\_ 0:0:0:0 sda 8:0 [active][faulty]
# dmesg (after starting the config script!)
device-mapper: 4.5.0-ioctl (2005-10-04) initialised: dm-devel@xxxxxxxxxx
dm-netlink version 0.0.2 loaded
device-mapper: dm-multipath version 1.0.4 loaded
device-mapper: dm-emc version 0.0.3 loaded
device-mapper: dm-emc: long trespass command will be send
device-mapper: dm-emc: honor reservation bit will not be set (default)
device-mapper: dm-round-robin version 1.0.0 loaded
device-mapper: dm-emc: long trespass command will be send
device-mapper: dm-emc: honor reservation bit will not be set (default)
device-mapper: dm-emc: emc_pg_init: sending switch-over command
end_request: I/O error, dev sdh, sector 2097024
device-mapper: dm-multipath: Failing path 8:112.
end_request: I/O error, dev sdg, sector 2097024
device-mapper: dm-multipath: Failing path 8:96.
end_request: I/O error, dev sdb, sector 2097024
device-mapper: dm-multipath: Failing path 8:16.
device-mapper: dm-emc: long trespass command will be send
device-mapper: dm-emc: honor reservation bit will not be set (default)
device-mapper: dm-emc: emc_pg_init: sending switch-over command
end_request: I/O error, dev sdf, sector 2097024
device-mapper: dm-multipath: Failing path 8:80.
end_request: I/O error, dev sdd, sector 2097024
device-mapper: dm-multipath: Failing path 8:48.
device-mapper: dm-emc: long trespass command will be send
device-mapper: dm-emc: honor reservation bit will not be set (default)
end_request: I/O error, dev sdc, sector 2097024
device-mapper: dm-multipath: Failing path 8:32.
device-mapper: dm-emc: emc_pg_init: sending switch-over command
# dmsetup table
350060160b02217df50060160b02217df: 0 2097152 multipath 1
queue_if_no_path 1 emc 1 1 round-robin 0 3 1 8:32 1000 8:48 1000 8:80
1000
350060160b022151c50060160b022151c: 0 2097152 multipath 1
queue_if_no_path 1 emc 1 1 round-robin 0 3 1 8:16 1000 8:96 1000 8:112
1000
san2: 0 104857600 multipath 1 queue_if_no_path 1 emc 1 1 round-robin 0 1
1 8:64 1000
san1: 0 104857600 multipath 1 queue_if_no_path 1 emc 1 1 round-robin 0 1
1 8:0 1000
--
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