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Re: [dm-devel] Re: configure MD3000



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


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