Finally I solved my problem, the gulty was scsi_id, I install CentOS and
scsi_id works as expected reporting different uuid for each lun
this is my final situation:
[root@server1 block]# scsi_id -g -u -s /block/sdb
36006016086f01600bc80c9afbc8dda11
[root@server1 block]# scsi_id -g -u -s /block/sdc
36006016086f01600463513d9978dda11
[root@server1 block]# scsi_id -g -u -s /block/sdd
36006016086f01600bc80c9afbc8dda11
[root@server1 block]# scsi_id -g -u -s /block/sde
36006016086f01600463513d9978dda11
[root@server1 block]# scsi_id -g -u -s /block/sdf
36006016086f01600bc80c9afbc8dda11
[root@server1 block]# scsi_id -g -u -s /block/sdg
36006016086f01600463513d9978dda11
[root@server1 block]# scsi_id -g -u -s /block/sdh
36006016086f01600bc80c9afbc8dda11
[root@server1 block]# scsi_id -g -u -s /block/sdi
36006016086f01600463513d9978dda11
multipath -l
mail (36006016086f01600bc80c9afbc8dda11)
[size=150 GB][features="1 queue_if_no_path"][hwhandler="1 emc"]
\_ round-robin 0 [active]
\_ 1:0:1:0 sdd 8:48 [active]
\_ 2:0:1:0 sdh 8:112 [active]
\_ round-robin 0 [enabled]
\_ 1:0:0:0 sdb 8:16 [active]
\_ 2:0:0:0 sdf 8:80 [active]
ql (36006016086f01600463513d9978dda11)
[size=500 GB][features="1 queue_if_no_path"][hwhandler="1 emc"]
\_ round-robin 0 [active]
\_ 1:0:1:1 sde 8:64 [active]
\_ 2:0:1:1 sdi 8:128 [active]
\_ round-robin 0 [enabled]
\_ 1:0:0:1 sdc 8:32 [active]
\_ 2:0:0:1 sdg 8:96 [active]
scsi_id is broken in gentoo and ubuntu, at least for this setup infact I
have a working multipath setup using gentoo with some minor difference
in hardware equipment,
thanks to all,
regards
Nicola
Nicola Murino ha scritto:
Brian Wong ha scritto:
On Tue, 2006-01-24 at 22:31 +0100, Nicola Murino wrote:
Hi,
I'm trying to configure a new emc cx storage, I have the following:
2 server, each server has a qla2462 dual port hba
each qla2462 is connected to a switch (only one switch)
1 emc cx storage with 4 path connected to the switch
I defined two lun on the storage however I'm able to see only one LUN
multipath -l show the following:
multipath -l
mail (36006016086f01600e46f567adb8cda11)
[size=150 GB][features="1 queue_if_no_path"][hwhandler="1 emc"]
\_ round-robin 0 [active]
\_ 1:0:1:0 sdd 8:48 [active][ready]
\_ 1:0:1:1 sde 8:64 [active][ready]
\_ 2:0:1:0 sdh 8:112 [active][ready]
\_ 2:0:1:1 sdi 8:128 [active][ready]
\_ round-robin 0 [enabled]
\_ 2:0:0:0 sdf 8:80 [active][ready]
\_ 1:0:0:0 sdb 8:16 [active][ready]
\_ 1:0:0:1 sdc 8:32 [active][ready]
\_ 2:0:0:1 sdg 8:96 [active][ready]
i could be off in the weeds here, but this output looks wrong. the
host:channel:target:lun numbers listed there suggest your cx is indeed
surfacing luns 0 and 1, but multipath is grouping them under a single
target ID.
Maybe you are right! I added another LUN and this is multipath output
multipath -l
mail (36006016086f01600e46f567adb8cda11)
[size=150 GB][features="1 queue_if_no_path"][hwhandler="1 emc"]
\_ round-robin 0 [active]
\_ 2:0:0:0 sdh 8:112 [active][ready]
\_ 1:0:0:0 sdb 8:16 [active][ready]
\_ 1:0:0:1 sdc 8:32 [active][ready]
\_ 1:0:0:2 sdd 8:48 [active][ready]
\_ 2:0:0:1 sdi 8:128 [active][ready]
\_ 2:0:0:2 sdj 8:144 [active][ready]
\_ round-robin 0 [enabled]
\_ 1:0:1:0 sde 8:64 [active][ready]
\_ 1:0:1:1 sdf 8:80 [active][ready]
\_ 1:0:1:2 sdg 8:96 [active][ready]
\_ 2:0:1:0 sdk 8:160 [active][ready]
\_ 2:0:1:1 sdl 8:176 [active][ready]
\_ 2:0:1:2 sdm 8:192 [active][ready]
i think emc engineers monitor this list; perhaps they can help.
maybe the problem is scsi_id that report the same output for all block
device,
I have kernel 2.6.16-rc1 on a server and 2.6.13.5 on the other one,
with 2.6.16-rc1
lsmod
Module Size Used by
dm_round_robin 3840 1
dm_emc 5760 1
dm_multipath 18696 3 dm_round_robin,dm_emc
qla2400 200448 0
qla2xxx 116964 25 qla2400
with 2.6.13.5
root@server1:/home/admin# lsmod
Module Size Used by
ehci_hcd 29576 0
uhci_hcd 30864 0
usbcore 104828 3 ehci_hcd,uhci_hcd
dm_round_robin 3712 1
dm_emc 5632 1
dm_multipath 18312 3 dm_round_robin,dm_emc
qla2xxx 110044 12
firmware_class 8448 1 qla2xxx
hba controller are qlogic2462
thanks
Nicola
also, look at this if you havent already (there's a section on clariion
cx's), and feel free to add your findings.
http://christophe.varoqui.free.fr/wiki/wakka.php?wiki=TestedEnvironments
hope that helps,
brian
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