In git commit 28a4d55 LinuxFibreChannel.rescan_hosts attempts
to find specific targets to rescan by looking for
the hba wwnn in the target port_name.
This commit has a number of problems:
* the grep for target* fails many times with the following error:
[Errno 2] No such file or directory
this can be seen in many 3rd party cinder CIs
since the log files are rotated there is no point in giving a link
* the code used to grep the initiaitor wwnn in the target node_name
that simple cannot happen so even if you didn't get errno 2,
the function _get_hba_channel_scsi_target would return nothing
here's an example:
from c-vol.log:
2017-02-08 21:25:38.706 6714 ERROR
os_brick.initiator.linuxfc
[-] Could not get HBA channel and SCSI target ID,
path: /sys/class/fc_transport/target10:,
reason: [Errno 2] No such file or directory
at looking at sysfs:
$ ls /sys/class/fc_transport
target10:0:1
$ ls /sys/class/fc_transport/target10:0:1
device node_name port_id port_name power subsystem uevent
$ cat /sys/class/fc_transport/target10:0:1/node_name
0x5742b0f000754200
$ cat /sys/class/fc_transport/*/node_name
0x5742b0f000754200
$ cat /sys/class/fc_host/*/node_name
0x20000000c9952b4c
$ cat /sys/class/fc_host/*/port_name
0x10000000c9952b4c
$ cat /sys/class/fc_transport/*/port_name
0x5742b0f000754211
$ cat /sys/class/fc_host/*/port_gname
* calling /sys/class/scsi_host/%s/scan rescans that specific HBA,
and since the method rescan_hosts doesn't get any info about the
target except for the lun, it needs to rescan all the targets
that this hba is connected to
So I removed the method _get_hba_channel_scsi_target from the code,
because it won't work anyway and it is not needed there,
and removed the tests that mock it.
Some references:
3par
http://
2017-02-14 16:04:54.527 10189 ERROR os_brick.
Command: grep 2000d4c9ef7671cd /sys/class/
Exit code: -
Stdout: None
Stderr: None
2017-02-14 16:06:12.323 10189 ERROR os_brick.
Command: grep 2000d4c9ef7671cd /sys/class/
Exit code: -
Stdout: None
Stderr: None
2017-02-14 16:07:01.347 10189 ERROR os_brick.
Command: grep 2000d4c9ef7671cd /sys/class/
Exit code: -
Stdout: None
Stderr: None