EMC Power Path Multipathing device (emcpowerxx) is not listed in format like others.

Asset ID:	1-72-1997499.1
Update Date:	2015-04-15
Keywords:

Solution Type Problem Resolution Sure

Solution 1997499.1 : EMC Power Path Multipathing device (emcpowerxx) is not listed in format like others.

Applies to:

SPARC T5-2 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Issue is not that emc power path device (emcpower15) is not being created but that it is not listed in format like others.

47. emcpower11 EMC-SYMMETRIX-5874 cyl 65533 alt 2 hd 60 sec 241
/pseudo/emcp@11

Cause

"HP OV agent" blocked the creation of pseudo files under /dev and/or /devices.

created the new LUN while the "HP OV agent" was still running.

found emcpower15 are defined in ...

/dev/dsk

lrwxrwxrwx 1 root root 35 Mar 17 16:30 emcpower15 -> ../../devices/pseudo/emcp@15:wd,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15a -> ../../devices/pseudo/emcp@15:a,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15b -> ../../devices/pseudo/emcp@15:b,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15c -> ../../devices/pseudo/emcp@15:c,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15d -> ../../devices/pseudo/emcp@15:d,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15e -> ../../devices/pseudo/emcp@15:e,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15f -> ../../devices/pseudo/emcp@15:f,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15g -> ../../devices/pseudo/emcp@15:g,blk

and

/dev/rdsk

lrwxrwxrwx 1 root root 35 Mar 17 16:30 emcpower15 -> ../../devices/pseudo/emcp@15:wd,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15a -> ../../devices/pseudo/emcp@15:a,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15b -> ../../devices/pseudo/emcp@15:b,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15c -> ../../devices/pseudo/emcp@15:c,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15d -> ../../devices/pseudo/emcp@15:d,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15e -> ../../devices/pseudo/emcp@15:e,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15f -> ../../devices/pseudo/emcp@15:f,blk
lrwxrwxrwx 1 root root 34 Mar 17 16:30 emcpower15g -> ../../devices/pseudo/emcp@15:g,blk

BUT, not in /devices/pseudo

drwxr-xr-x 2 root sys 2 Sep 23 2014 emcp@14
brw------- 1 root sys 287, 112 Mar 18 10:05 emcp@14:a,blk
crw------- 1 root sys 287, 112 Mar 18 10:05 emcp@14:a,raw
brw------- 1 root sys 287, 113 Mar 18 10:05 emcp@14:b,blk
crw------- 1 root sys 287, 113 Mar 18 10:05 emcp@14:b,raw
brw------- 1 root sys 287, 114 Oct 4 23:30 emcp@14:c,blk
crw------- 1 root sys 287, 114 Mar 18 10:05 emcp@14:c,raw
brw------- 1 root sys 287, 115 Mar 18 10:05 emcp@14:d,blk
crw------- 1 root sys 287, 115 Mar 18 10:05 emcp@14:d,raw
brw------- 1 root sys 287, 116 Mar 18 10:05 emcp@14:e,blk
crw------- 1 root sys 287, 116 Mar 18 10:05 emcp@14:e,raw
brw------- 1 root sys 287, 117 Mar 18 10:05 emcp@14:f,blk
crw------- 1 root sys 287, 117 Mar 18 10:05 emcp@14:f,raw
brw------- 1 root sys 287, 118 Mar 18 10:05 emcp@14:g,blk
crw------- 1 root sys 287, 118 Mar 18 10:05 emcp@14:g,raw
brw------- 1 root sys 287, 119 Mar 18 10:05 emcp@14:h,blk
crw------- 1 root sys 287, 119 Mar 18 10:05 emcp@14:h,raw

brw------- 1 root sys 287, 8 Mar 18 10:05 emcp@1:a,blk
crw------- 1 root sys 287, 8 Mar 18 10:05 emcp@1:a,raw
brw------- 1 root sys 287, 9 Mar 18 10:05 emcp@1:b,blk
crw------- 1 root sys 287, 9 Mar 18 10:05 emcp@1:b,raw
brw------- 1 root sys 287, 10 Oct 4 23:30 emcp@1:c,blk
crw------- 1 root sys 287, 10 Mar 18 10:05 emcp@1:c,raw
brw------- 1 root sys 287, 11 Mar 18 10:05 emcp@1:d,blk
crw------- 1 root sys 287, 11 Mar 18 10:05 emcp@1:d,raw
brw------- 1 root sys 287, 12 Mar 18 10:05 emcp@1:e,blk
crw------- 1 root sys 287, 12 Mar 18 10:05 emcp@1:e,raw
brw------- 1 root sys 287, 13 Mar 18 10:05 emcp@1:f,blk
crw------- 1 root sys 287, 13 Mar 18 10:05 emcp@1:f,raw
brw------- 1 root sys 287, 14 Mar 18 10:05 emcp@1:g,blk
crw------- 1 root sys 287, 14 Mar 18 10:05 emcp@1:g,raw
brw------- 1 root sys 287, 15 Mar 18 10:05 emcp@1:h,blk
crw------- 1 root sys 287, 15 Mar 18 10:05 emcp@1:h,raw

Solution

Since EMC is responsible for managing the their own pseudo device, customer should engage EMC again to find out why the new LUN is missing in the /dev/pseudo directory and how to fix it.

References

<NOTE:1522764.1> - Original EMC luns working fine. Additional non-Oracle Newly Added EMC SAN Luns From Same Target Are Not Seen From Solaris 10.

Attachments

This solution has no attachment