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EMC, PowerPath and issue on using LUN

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Operating Systems Linux EMC, PowerPath and issue on using LUN
# 8  
Old 12-15-2011
No support for storage is a serious situation. They need to fix that or think about not having external storage. When you connect to a SAN, it is the big leagues. This is not the time to play foolish by not supporting your infrastructure.
# 9  
Old 12-15-2011
Yeah, I know that, but try telling that to my company...I've tried over and over, and it was all the same, we have support for crashes, not implementations...and then it comes to this, when we need a new LUN and can't reboot the server...if I reboot the server, all will be fine, except it's a production server. Anyway, I'm in a big trouble here!
# 10  
Old 12-15-2011
locate a script online (open source) called rescan-scsi-bus.sh

run it with -l -w -c

See if that helps

Failing that, crack open the manual on powerpath.
# 11  
Old 12-16-2011
Well, it DID found 8 new devices (???), but still, no luck on trying to use /dev/emcpowerf...
Code:
# ./rescan-scsi-bus.sh -l -c -w
Host adapter 0 (megaraid_sas) found.
Host adapter 1 (qla2xxx) found.
Host adapter 2 (qla2xxx) found.
Host adapter 3 (bnx2i) found.
Host adapter 4 (bnx2i) found.
Scanning SCSI subsystem for new devices
Scanning host 0 channels 0 1 for  SCSI target IDs  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15, LUNs  0 1 2 3 4 5 6 7
Scanning host 1 for  all SCSI target IDs, LUNs  0 1 2 3 4 5 6 7
Scanning for device 1 0 0 0 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 00
      Vendor: DGC      Model: LUNZ             Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 1 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 01
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 2 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 02
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 3 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 03
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 4 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 04
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 5 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 05
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 6 ...
NEW: Host: scsi1 Channel: 00 Id: 00 Lun: 06
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 0 7 ...
NEW: Host: scsi1 Channel: 00 Id: 00 Lun: 07
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 0 ...
OLD: Host: scsi1 Channel: 00 Id: 01 Lun: 00
      Vendor: DGC      Model: LUNZ             Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 1 ...
OLD: Host: scsi1 Channel: 00 Id: 01 Lun: 01
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 2 ...
OLD: Host: scsi1 Channel: 00 Id: 01 Lun: 02
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 3 ...
OLD: Host: scsi1 Channel: 00 Id: 01 Lun: 03
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 4 ...
OLD: Host: scsi1 Channel: 00 Id: 01 Lun: 04
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 5 ...
OLD: Host: scsi1 Channel: 00 Id: 01 Lun: 05
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 6 ...
NEW: Host: scsi1 Channel: 00 Id: 01 Lun: 06
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 1 0 1 7 ...
NEW: Host: scsi1 Channel: 00 Id: 01 Lun: 07
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning host 2 for  all SCSI target IDs, LUNs  0 1 2 3 4 5 6 7
Scanning for device 2 0 0 0 ...
OLD: Host: scsi2 Channel: 00 Id: 00 Lun: 00
      Vendor: DGC      Model: LUNZ             Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 1 ...
OLD: Host: scsi2 Channel: 00 Id: 00 Lun: 01
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 2 ...
OLD: Host: scsi2 Channel: 00 Id: 00 Lun: 02
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 3 ...
OLD: Host: scsi2 Channel: 00 Id: 00 Lun: 03
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 4 ...
OLD: Host: scsi2 Channel: 00 Id: 00 Lun: 04
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 5 ...
OLD: Host: scsi2 Channel: 00 Id: 00 Lun: 05
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 6 ...
NEW: Host: scsi2 Channel: 00 Id: 00 Lun: 06
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 0 7 ...
NEW: Host: scsi2 Channel: 00 Id: 00 Lun: 07
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 0 ...
OLD: Host: scsi2 Channel: 00 Id: 01 Lun: 00
      Vendor: DGC      Model: LUNZ             Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 1 ...
OLD: Host: scsi2 Channel: 00 Id: 01 Lun: 01
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 2 ...
OLD: Host: scsi2 Channel: 00 Id: 01 Lun: 02
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 3 ...
OLD: Host: scsi2 Channel: 00 Id: 01 Lun: 03
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 4 ...
OLD: Host: scsi2 Channel: 00 Id: 01 Lun: 04
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 5 ...
OLD: Host: scsi2 Channel: 00 Id: 01 Lun: 05
      Vendor: DGC      Model: RAID 10          Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 6 ...
NEW: Host: scsi2 Channel: 00 Id: 01 Lun: 06
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning for device 2 0 1 7 ...
NEW: Host: scsi2 Channel: 00 Id: 01 Lun: 07
      Vendor: DGC      Model:                  Rev: 0326
      Type:   Direct-Access                    ANSI SCSI revision: 04
Scanning host 3 channels 0 1 for  SCSI target IDs  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15, LUNs  0 1 2 3 4 5 6 7
Scanning host 4 channels 0 1 for  SCSI target IDs  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15, LUNs  0 1 2 3 4 5 6 7
8 new device(s) found.
0 device(s) removed.
# sudo /sbin/fdisk -l /dev/emcpowerf
#
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