I have a active/active setup and when I unplug the FC SAN cable on one of the ports of my HBA my host is being un responsive and need to reboot it.
When I do
multipath -ll
I can see:
[root@cvprd2 etc]# multipath -ll
mpath2 (360060e8004770d000000770d0000018c) dm-1 HITACHI,OPEN-V*10
[size=335G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=8][active]
\_ 6:0:0:1 sdc 8:32 [active][ready]
\_ 6:0:0:16385 sde 8:64 [active][ready]
\_ 6:0:0:32769 sdg 8:96 [active][ready]
\_ 6:0:0:49153 sdi 8:128 [active][ready]
\_ 5:0:0:1 sdk 8:160 [active][ready]
\_ 5:0:0:16385 sdm 8:192 [active][ready]
\_ 5:0:0:32769 sdo 8:224 [active][ready]
\_ 5:0:0:49153 sdq 65:0 [active][ready]
mpath1 (360060e8004770d000000770d00000154) dm-0 HITACHI,OPEN-V*9
[size=301G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=8][active]
\_ 6:0:0:0 sdb 8:16 [active][ready]
\_ 6:0:0:16384 sdd 8:48 [active][ready]
\_ 6:0:0:32768 sdf 8:80 [active][ready]
\_ 6:0:0:49152 sdh 8:112 [active][ready]
\_ 5:0:0:0 sdj 8:144 [active][ready]
\_ 5:0:0:16384 sdl 8:176 [active][ready]
\_ 5:0:0:32768 sdn 8:208 [active][ready]
\_ 5:0:0:49152 sdp 8:240 [active][ready]
[root@cvprd2 etc]#
--
But when I do "multipath -v2" i donot see anything..
[root@cvprd2 etc]# multipath -v2
[root@cvprd2 etc]#
--
My multipath.conf is as below:
[root@cvprd1 etc]# more multipath.conf
# This is a basic configuration file with some examples, for device mapper
# multipath.
# For a complete list of the default configuration values, see
# /usr/share/doc/device-mapper-multipath-0.4.7/multipath.conf.defaults
# For a list of configuration options with descriptions, see
# /usr/share/doc/device-mapper-multipath-0.4.7/multipath.conf.annotated
# Blacklist all devices by default. Remove this to enable multipathing
# on the default devices.
blacklist {
devnode "^sda"
}
## Use user friendly names, instead of using WWIDs as names.
defaults {
user_friendly_names yes
polling_interval 5
no_path_retry 3
failover immediate
path_grouping_policy multibus
rr_weight priorities
path_checker readsector0
}
devices {
device {
vendor "HITACHI"
product "OPEN-V"
path_grouping_policy multibus
path_checker readsector0
getuid_callout "/sbin/scsi_id -g -u -p0x80 -s /block/%n"
}
}
[root@cvprd1 etc]#
Thanks !
Paras
On Tue, Jan 12, 2010 at 10:37 AM, Paras pradhan <pradhanparas@xxxxxxxxx> wrote:
Upgrding the kernel to 2.6.18-164.10.1.el5xen brought back /dev/dm-* and now multipath -ll has the ouput.I am curious about what has caused the lost of /dev/dm* in my previous kernel.Any ideas?Paras.On Mon, Jan 11, 2010 at 8:09 PM, Paras pradhan <pradhanparas@xxxxxxxxx> wrote:
Yes every thing's loaded.
Here is the output:
[root@cvprd1 ~]# lsmod | grep dm
dm_round_robin 36801 0
rdma_cm 68565 1 ib_iser
ib_cm 73449 1 rdma_cm
iw_cm 43465 1 rdma_cm
ib_sa 75209 2 rdma_cm,ib_cm
ib_core 105157 6 ib_iser,rdma_cm,ib_cm,iw_cm,ib_sa,ib_mad
ib_addr 41929 1 rdma_cm
dm_multipath 56153 1 dm_round_robin
scsi_dh 41665 1 dm_multipath
dm_raid45 99401 0
dm_message 36289 1 dm_raid45
dm_region_hash 46273 1 dm_raid45
dm_mem_cache 39489 1 dm_raid45
dm_snapshot 52105 0
dm_zero 35265 0
dm_mirror 54737 0
dm_log 44993 3 dm_raid45,dm_region_hash,dm_mirror
dm_mod 101521 11 dm_multipath,dm_raid45,dm_snapshot,dm_zero,dm_mirror,dm_log
Thanks
Paras.On Mon, Jan 11, 2010 at 6:33 PM, nate <centos@xxxxxxxxxxxxxxxx> wrote:
Are the modules loaded?Paras pradhan wrote:
> Hi.
>
> Somehow I do not see any out put using multipath -l or multipath -ll . But I
> can see using dry run ie multipath -d.
>
> Also I do not see /dev/dm-*
>
> It was there before. How do I re claim it.
[root@dc1-mysql001a:~]# lsmod | grep dm
dm_zero 35265 0
dm_mirror 60617 0
dm_round_robin 36801 1
dm_multipath 52945 2 dm_round_robin
dm_mod 99737 17 dm_zero,dm_mirror,dm_multipath
[root@dc1-mysql001a:~]# multipath -l
350002ac0006a0714dm-1 3PARdata,VV
[size=1.0T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 1:0:0:3 sdc 8:32 [active][undef]
\_ 1:0:1:3 sde 8:64 [active][undef]
\_ 2:0:0:3 sdg 8:96 [active][undef]
\_ 2:0:1:3 sdi 8:128 [active][undef]
350002ac000790714dm-0 3PARdata,VV
[size=2.0T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 1:0:0:2 sdb 8:16 [active][undef]
\_ 1:0:1:2 sdd 8:48 [active][undef]
\_ 2:0:0:2 sdf 8:80 [active][undef]
\_ 2:0:1:2 sdh 8:112 [active][undef]
nate
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
_______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
