On Mon, 24 Aug 2009 14:41:56 -0700
Chandra Seetharaman <sekharan@xxxxxxxxxx> wrote:
> These messages are seen because there is no support for this device
> in-built in the scsi_dh_rdac module.
>
> These will disappear when youadded the device support to scsi_dh_rdac
> module and include the module in your initrd image.
Now if I understand correctly - because my device is not
supported by scsi_dh_rdac - RDAC is not functional at all? Because
later in the dmesg, it shows
sd 1:0:1:0: rdac: LUN 0 (owned)
sd 1:0:0:0: rdac: LUN 0 (unowned)
which suggests that RDAC is working after all?
Here is my current multipath.conf (Sbeaf_11 and Sbeaf_21 are iSCSI
targets that work flawlessly):
defaults {
user_friendly_names yes
}
defaults {
udev_dir /dev
polling_interval 10
selector "round-robin 0"
path_grouping_policy multibus
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout /bin/true
path_checker readsector0
rr_min_io 100
max_fds 8192
rr_weight priorities
failback immediate
no_path_retry fail
user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
}
multipaths {
multipath {
wwid S_beaf11
alias controller0
path_grouping_policy failover
path_checker readsector0
path_selector "round-robin 0"
failback immediate
no_path_retry queue
}
multipath {
wwid S_beaf21
alias controller1
path_grouping_policy failover
path_checker readsector0
path_selector "round-robin 0"
failback immediate
no_path_retry queue
}
multipath {
wwid
3600a0b80002fcd18000014544a9166fb
alias sas-xen
}
multipath {
wwid
3600a0b80003abc5c00000b654a916617
alias sas-mysql
}
multipath {
wwid
3600a0b80002fcd18000014514a9165b4
alias qd
}
}
devices {
device {
vendor "SUN"
product "LCSM100_S"
getuid_callout "/sbin/scsi_id -g -u
-s /block/%n"
prio_callout "/sbin/mpath_prio_tpc /dev/%n"
hardware_handler "1 rdac"
path_grouping_policy group_by_prio
path_checker rdac
failback immediate
rr_weight uniform
no_path_retry queue
rr_min_io 1000
}
}
And here is the multipath -ll:
# multipath -ll
qd (3600a0b80002fcd18000014514a9165b4) dm-0 SUN,LCSM100_S
[size=100M][features=1 queue_if_no_path][hwhandler=1 rdac][rw]
\_ round-robin 0 [prio=3][active]
\_ 1:0:1:0 sde 8:64 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 1:0:0:0 sdb 8:16 [active][ghost]
controller1 (S_beaf21) dm-4 IET,VIRTUAL-DISK
[size=3.4T][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 8:0:0:1 sdk 8:160 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 9:0:0:1 sdj 8:144 [active][ready]
controller0 (S_beaf11) dm-3 IET,VIRTUAL-DISK
[size=3.4T][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 10:0:0:1 sdh 8:112 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 11:0:0:1 sdi 8:128 [active][ready]
sas-mysql (3600a0b80003abc5c00000b654a916617) dm-1 SUN,LCSM100_S
[size=115G][features=1 queue_if_no_path][hwhandler=1 rdac][rw]
\_ round-robin 0 [prio=3][active]
\_ 1:0:1:1 sdf 8:80 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 1:0:0:1 sdc 8:32 [active][ghost]
sas-xen (3600a0b80002fcd18000014544a9166fb) dm-2 SUN,LCSM100_S
[size=21G][features=1 queue_if_no_path][hwhandler=1 rdac][rw]
\_ round-robin 0 [prio=3][active]
\_ 1:0:0:2 sdd 8:48 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 1:0:1:2 sdg 8:96 [active][ghost]
--
| Jakov Sosic | ICQ: 28410271 | PGP: 0x965CAE2D |
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