[dm-devel] Re: configure MD3000
Chandra Seetharaman
sekharan at us.ibm.com
Thu Mar 12 19:31:44 UTC 2009
Are you able to read/write from/to the scsi device ?
If yes, Did you do "multipath -F" followed by "multipath".
Is the multipathd running ?
chandra
On Thu, 2009-03-12 at 15:25 -0400, Thomas Witzel wrote:
> My /sys/block looks like this:
> ls /sys/block/
> dm-0 dm-3 dm-6 loop2 loop5 ram0 ram11 ram14 ram3 ram6 ram9
> sdc sdf sdi sdl
> dm-1 dm-4 loop0 loop3 loop6 ram1 ram12 ram15 ram4 ram7 sda
> sdd sdg sdj sdm
> dm-2 dm-5 loop1 loop4 loop7 ram10 ram13 ram2 ram5 ram8 sdb
> sde sdh sdk sr0
>
> My /proc/partitions looks like this:
>
> major minor #blocks name
>
> 8 0 71041024 sda
> 8 1 68099503 sda1
> 8 2 1 sda2
> 8 5 2939863 sda5
> 8 16 2134896640 sdb
> 8 17 2134893883 sdb1
> 8 32 2134896640 sdc
> 8 48 2134896640 sdd
> 8 49 2134893883 sdd1
> 8 64 2134896640 sde
> 8 80 1222794240 sdf
> 8 96 20480 sdg
> 8 112 2134896640 sdh
> 8 128 2134896640 sdi
> 8 129 2134893883 sdi1
> 8 144 2134896640 sdj
> 8 160 2134896640 sdk
> 8 161 2134893883 sdk1
> 8 176 1222794240 sdl
> 8 192 20480 sdm
> 254 0 2134896640 dm-0
> 254 1 2134896640 dm-1
> 254 2 2134896640 dm-2
> 254 3 2134896640 dm-3
> 254 4 1222794240 dm-4
> 254 5 20480 dm-5
> 254 6 20480 dm-6
>
> All the sd's with a partition are working fine, I even created a test
> file system at some point. I did load scsi_dh_rdac for testing at some
> point, and that put the following into the syslog:
> [10170.087743] sd 1:0:0:0: rdac: LUN 0 (owned)
> [10170.089151] sd 1:0:0:1: rdac: LUN 1 (unowned)
> [10170.089941] sd 1:0:0:2: rdac: LUN 2 (owned)
> [10170.090719] sd 1:0:0:3: rdac: LUN 3 (unowned)
> [10170.092112] sd 1:0:0:4: rdac: LUN 4 (owned)
> [10170.092964] sd 1:0:1:0: rdac: LUN 0 (unowned)
> [10170.093733] sd 1:0:1:1: rdac: LUN 1 (owned)
> [10170.094507] sd 1:0:1:2: rdac: LUN 2 (unowned)
> [10170.095261] sd 1:0:1:3: rdac: LUN 3 (owned)
> [10170.096081] sd 1:0:1:4: rdac: LUN 4 (unowned)
> [10170.096088] rdac: device handler registered
>
> Also loading the scsi_dh_rdac module seems to stop the [ 8996.087508]
> Buffer I/O error on device dm-5, logical block 5
> [ 8996.087539] Buffer I/O error on device dm-5, logical block 6
> [ 8996.087548] Buffer I/O error on device dm-5, logical block 5112
> [ 8996.087553] Buffer I/O error on device dm-5, logical block 5112
> [ 8996.087601] Buffer I/O error on device dm-5, logical block 12
> [ 8996.087606] Buffer I/O error on device dm-5, logical block 13
> [ 8996.087609] Buffer I/O error on device dm-5, logical block 14
> [ 8996.087612] Buffer I/O error on device dm-5, logical block 15
> [ 8996.087615] Buffer I/O error on device dm-5, logical block 16
> [ 8996.087618] Buffer I/O error on device dm-5, logical block 17
>
> type messages.
>
> On Thu, Mar 12, 2009 at 3:18 PM, Chandra Seetharaman
> <sekharan at us.ibm.com> wrote:
> > No, you don't have to change the distro.
> >
> > Do you see the disks ? (the #:#:#:# makes me think that the underlying
> > block devices are not configured properly). IOW, do you the sd devices
> > under /sys/block ? Are you able to read/write from/to the devices ?
> >
> > chandra
> >
> > On Thu, 2009-03-12 at 15:07 -0400, Thomas Witzel wrote:
> >> Thanks Chandra,
> >>
> >> sorry for the out of order reply, still had the digest mode on. I
> >> setup the config similar to what you said
> >>
> >> devices {
> >> device {
> >> vendor "DELL"
> >> product "MD3000"
> >> hardware_handler "1 rdac"
> >> path_checker rdac
> >> path_grouping_policy group_by_prio
> >> prio_callout "/sbin/mpath_prio_rdac /dev/%n"
> >> failback immediate
> >> getuid_callout "/sbin/scsi_id -g -u /block/%n"
> >> }
> >> }
> >>
> >>
> >> and I'm still getting:
> >> sdh: checker msg is "directio checker reports path is down"
> >> create: 360022190009773680000214749504780 ,
> >> [size=2.0T][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdb 8:16 [undef][ready]
> >> \_ round-robin 0 [prio=0][undef]
> >> \_ #:#:#:# sdh 8:112 [undef][faulty]
> >> sdc: checker msg is "directio checker reports path is down"
> >> create: 3600221900096f27d00000ab3495047fd ,
> >> [size=2.0T][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=0][undef]
> >> \_ #:#:#:# sdc 8:32 [undef][faulty]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdi 8:128 [undef][ready]
> >> sdj: checker msg is "directio checker reports path is down"
> >> create: 360022190009773680000214a495047ce ,
> >> [size=2.0T][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdd 8:48 [undef][ready]
> >> \_ round-robin 0 [prio=0][undef]
> >> \_ #:#:#:# sdj 8:144 [undef][faulty]
> >> sde: checker msg is "directio checker reports path is down"
> >> create: 3600221900096f27d00000ab449504839 ,
> >> [size=2.0T][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=0][undef]
> >> \_ #:#:#:# sde 8:64 [undef][faulty]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdk 8:160 [undef][ready]
> >> sdl: checker msg is "directio checker reports path is down"
> >> create: 360022190009773680000214c49504806 ,
> >> [size=1.1T][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdf 8:80 [undef][ready]
> >> \_ round-robin 0 [prio=0][undef]
> >> \_ #:#:#:# sdl 8:176 [undef][faulty]
> >> create: 360022190009773680000000000000000 ,
> >> [size=20M][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdg 8:96 [undef][ready]
> >> create: 3600221900096f27d0000000000000000 ,
> >> [size=20M][features=0][hwhandler=0]
> >> \_ round-robin 0 [prio=1][undef]
> >> \_ #:#:#:# sdm 8:192 [undef][ready]
> >> libdevmapper: libdm-common.c(312): Created
> >> /dev/mapper/360022190009773680000000000000000
> >> libdevmapper: libdm-common.c(312): Created
> >> /dev/mapper/3600221900096f27d0000000000000000
> >>
> >> Now this is not on RH or SLES, its an ubuntu 8.4 system. If absolutely
> >> necessary I would consider switching the distribution, but right now
> >> I'd prefer to stick with what all the other machines have.
> >>
> >> Thanks, Thomas
> >>
> >> --
> >> dm-devel mailing list
> >> dm-devel at redhat.com
> >> https://www.redhat.com/mailman/listinfo/dm-devel
> >
> > --
> > dm-devel mailing list
> > dm-devel at redhat.com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> >
>
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