On 05/31/2011 05:24 PM, Jorge Salamero Sanz wrote:
>
> hi all,
>
> i've configured multipath on a linux box and i'm getting these messages on
> syslog:
Let's start with the basics:
- which version of Ubuntu are you running?
- multipath version
- kernel version
> May 30 10:50:05 mail-1 udevd-work[25148]: rename(/dev/disk/by-
> id/wwn-0x6006016052b022002e770b609680e011.udev-tmp, /dev/disk/by-
> id/wwn-0x6006016052b022002e770b609680e011) failed: No such file or directory
So without the alias directives the wwn are created and persist just fine?
> and sometimes after a path failure, the different paths get different scsi
> names, /proc/partitions shows in that case:
>
> 8 16 838860800 sdb
> 8 32 849582720 sdc
> 8 80 838860800 sdf
> 8 96 849582720 sdg
> 252 3 849582720 dm-3
> 252 4 838860800 dm-4
> 8 208 838860800 sdn
> 8 224 849582720 sdo
> 65 0 849582720 sdq
> 8 240 838860800 sdp
>
> and then multipath gets crazy:
>
> May 25 12:26:51 mail-1 multipathd: sdh: emc_clariion_checker: sending query
> command failed
> ...
>
> i guess i should tell udev to asign persistant names using uuid? what's the
> right way to address this problem?
>
> this is my config:
>
> root@mail-1:~# multipath -ll
> backup (36006016052b022009cd7f2aeaf80e011) dm-3 DGC ,RAID 5
> [size=810G][features=1 queue_if_no_path][hwhandler=1 emc]
> \_ round-robin 0 [prio=2][active]
> \_ 3:0:1:1 sdg 8:96 [active][ready]
> \_ 4:0:0:1 sde 8:64 [active][ready]
> \_ round-robin 0 [prio=0][enabled]
> \_ 3:0:0:1 sdc 8:32 [active][ready]
> \_ 4:0:1:1 sdi 8:128 [active][ready]
> mail (36006016052b022002e770b609680e011) dm-4 DGC ,RAID 5
> [size=800G][features=1 queue_if_no_path][hwhandler=1 emc]
> \_ round-robin 0 [prio=2][active]
> \_ 4:0:0:0 sdd 8:48 [active][ready]
> \_ 3:0:1:0 sdf 8:80 [active][ready]
> \_ round-robin 0 [prio=0][enabled]
> \_ 3:0:0:0 sdb 8:16 [active][ready]
> \_ 4:0:1:0 sdh 8:112 [active][ready]
>
> root@mail-1:~# cat /etc/multipath.conf
> #
>
> blacklist {
> devnode "sda"
> 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]*]"
> }
>
> defaults {
> user_friendly_names no
> }
>
> devices {
> device {
> vendor "DGC"
> product "*"
> path_grouping_policy group_by_prio
> getuid_callout "/lib/udev/scsi_id -g -u -d /dev/%n"
> prio_callout "/sbin/mpath_prio_emc /dev/%n"
> hardware_handler "1 emc"
> no_path_retry 300
> path_checker emc_clariion
> failback immediate
> }
> }
>
> multipaths {
> multipath {
> wwid 36006016052b022002e770b609680e011
> alias mail
> }
> multipath {
> wwid 36006016052b022009cd7f2aeaf80e011
> alias backup
> }
> }
>
> thanks in advance!
Peter
>
> --
> dm-devel mailing list
> dm-de...@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
>
--
ubuntu-server mailing list
ubuntu-server@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-server
More info: https://wiki.ubuntu.com/ServerTeam
