Kernel: 2.6.13.2 on SuSe 9.3 with device-mapper 1.01.05 with multipath
0.4.5.
multipath.conf:
defaults {
multipath_tool "/sbin/multipath -v0"
udev_dir /dev
polling_interval 10
# default_selector "round-robin 1"
default_path_grouping_policy multibus
default_getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
default_prio_callout "/bin/true"
default_features "0"
rr_min_io 100
rr_weight priorities
}
blacklist {
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]*]"
}
I can run multipath and see all the drives and it recognizes both paths
as follows:
linux:~ # multipath
create: 320000004cf8f2eda
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:12:0 sdb 8:16 [ready]
\_ 3:0:0:0 sdm 8:192 [ready]
create: 320000004cf72cf0e
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:13:0 sdc 8:32 [ready]
\_ 3:0:1:0 sdn 8:208 [ready]
create: 320000004cf72d14b
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:14:0 sdd 8:48 [ready]
\_ 3:0:2:0 sdo 8:224 [ready]
create: 32000002037cda4b7
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:15:0 sde 8:64 [ready]
\_ 3:0:3:0 sdp 8:240 [ready]
create: 32000002037cd9b96
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:16:0 sdf 8:80 [ready]
\_ 3:0:4:0 sdq 65:0 [ready]
create: 320000004cf72c7e5
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:17:0 sdg 8:96 [ready]
\_ 3:0:5:0 sdr 65:16 [ready]
create: 320000004cf27865a
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:18:0 sdh 8:112 [ready]
\_ 3:0:6:0 sds 65:32 [ready]
create: 320000004cf72d19a
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:19:0 sdi 8:128 [ready]
\_ 3:0:7:0 sdt 65:48 [ready]
create: 320000004cf72ca99
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:20:0 sdj 8:144 [ready]
\_ 3:0:8:0 sdu 65:64 [ready]
create: 32000002037cd9f05
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:21:0 sdk 8:160 [ready]
\_ 3:0:9:0 sdv 65:80 [ready]
create: 320000004cf72c818
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:22:0 sdl 8:176 [ready]
\_ 3:0:10:0 sdw 65:96 [ready]
But the second I uncomment the default_selector to set round-robin I get
these errors:
linux:~ # multipath
reload: 320000004cf8f2eda
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:12:0 sdb 8:16 [active][ready]
\_ 3:0:0:0 sdm 8:192 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf72cf0e
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:13:0 sdc 8:32 [active][ready]
\_ 3:0:1:0 sdn 8:208 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf72d14b
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:14:0 sdd 8:48 [active][ready]
\_ 3:0:2:0 sdo 8:224 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 32000002037cda4b7
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:15:0 sde 8:64 [active][ready]
\_ 3:0:3:0 sdp 8:240 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 32000002037cd9b96
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:16:0 sdf 8:80 [active][ready]
\_ 3:0:4:0 sdq 65:0 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf72c7e5
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:17:0 sdg 8:96 [active][ready]
\_ 3:0:5:0 sdr 65:16 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf27865a
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:18:0 sdh 8:112 [active][ready]
\_ 3:0:6:0 sds 65:32 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf72d19a
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:19:0 sdi 8:128 [active][ready]
\_ 3:0:7:0 sdt 65:48 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf72ca99
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:20:0 sdj 8:144 [active][ready]
\_ 3:0:8:0 sdu 65:64 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 32000002037cd9f05
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:21:0 sdk 8:160 [active][ready]
\_ 3:0:9:0 sdv 65:80 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
reload: 320000004cf72c818
[size=33 GB][features="0"][hwhandler="0"]
\_ round-robin 1
\_ 2:0:22:0 sdl 8:176 [active][ready]
\_ 3:0:10:0 sdw 65:96 [active][ready]
device-mapper ioctl cmd 9 failed: Invalid argument
device-mapper ioctl cmd 14 failed: No such device or address
Am I doing something wrong for round-robin to work? This is a Qlogic
Dual Port 2300 card with both ports connected to a Sun A5200. Any help
appreciated.
Thank you,
Brad Dameron
SeaTab Software
www.seatab.com
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