Re: Re: configure MD3000

[Chandra Seetharaman <sekharan@us.ibm.com>]

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@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@redhat.com
> >> https://www.redhat.com/mailman/listinfo/dm-devel
> >
> > --
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> > dm-devel@redhat.com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> >
> 
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