'sd' devices are not created however 'sg' devices could be seen for external storage.
Issue
- sd devices are missing for some of the paths from external storage.
[6:0:0:22] disk IBM 2145 0000 /dev/sdbt /dev/sg82
[6:0:0:23] disk IBM 2145 0000 /dev/sdbu /dev/sg83
- sd devices are missing for following paths from external storage
[6:0:0:24] disk IBM 2145 0000 - /dev/sg119
[6:0:0:25] disk IBM 2145 0000 - /dev/sg120
[6:0:0:26] disk IBM 2145 0000 - /dev/sg121
PQual value is not eqaul to 1 which could lead to missing sd devices as per Why scsi device name not created for all paths of LUN?
$ less sg_inq_out |grep -A 4 "Device /dev/sg119"
---- Device /dev/sg119 ----
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
$ less sg_inq_out |grep -A 4 "Device /dev/sg120"
---- Device /dev/sg120 ----
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
$ less sg_inq_out |grep -A 4 "Device /dev/sg121"
---- Device /dev/sg121 ----
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 version=0x06 [SPC-4]
Environment
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
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