Storage paths not automatically recovered during
IBM 2145SAN controller upgrade.
We have performed a firmware update on one controller at a time on
IBM 2145SAN array but observed that after a reboot of storage controller, failed paths were not able to recover back automatically.
After waiting for ~20 minutes for the path recovery, a manual SCSI bus re-scan was required to recover the paths:
$ echo "- - -" > /sys/class/scsi_host/hostX/scan
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 6
IBM 2145SAN/SVC/Storage array
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