[Bug 824790] Re: IBM DS3400 Will Not Bring Up Second Path

[Peter Petrakis]

@Joe

Please attach the latest multipath.conf and lvm.conf responsible for this
stream of messages. If you could move over that logs and other stuff
from salesforce into this bug that would be ideal. Thanks.

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Title:
   IBM DS3400 Will Not Bring Up Second Path

Status in “multipath-tools” package in Ubuntu:
  New

Bug description:
  System configuration is an IBM HS21 blade connected to an IBM DS3400 SAN.
  The system is running Ubuntu 10.10 with multipath-tools version: 0.4.8-14ubuntu4.10.10.2
  The Ubuntu OS is installed on an internal disk and not the SAN.

  multipathd> show paths 
  hcil dev dev_t pri dm_st chk_st next_check 
  0:0:0:0 sda 8:0 0 [undef][ghost] [orphan] 
  1:0:0:0 sdb 8:16 3 [undef][ready] [orphan] 
  2:1:1:0 sdc 8:32 1 [undef][ready] [orphan] 

  It appears everything is working but multipathd cant define the maps,
  a multipath -v 6 shows

  "360080e50001b5f4c00003d284e37e864: domap (0) failure for
  create/reload map"

  That is the uuid of the path associated with /sda and /sdb but it cant
  seem to create it.

  libdevmapper: ioctl/libdm-iface.c(1740): dm reload 360080e50001b5f4c00003d284e37e864 OF [16384] 
  libdevmapper: ioctl/libdm-iface.c(1757): device-mapper: reload ioctl failed: Invalid argument 
  libdevmapper: ioctl/libdm-iface.c(1740): dm remove 360080e50001b5f4c00003d284e37e864 NF [16384] 
  libdevmapper: libdm-common.c(799): 360080e50001b5f4c00003d284e37e864: Stacking NODE_DEL (replaces other stacked ops) 
  libdevmapper: ioctl/libdm-iface.c(1740): dm info 360080e50001b5f4c00003d284e37e864 NF [16384] 
  360080e50001b5f4c00003d284e37e864: domap (0) failure for create/reload map 
  360080e50001b5f4c00003d284e37e864: remove multipath map 
  sda: orphaned 
  sdb: orphaned

  The SAN is on devices sda and sdb.  The internal root disk is sdc.
  The device sda is reporting I/O errors in syslog because multipath
  cannot bring up the path.

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