The devices don't appear to have the same serial or even the same
product name, I'm unsure why they're be considered as multipathed even
with the apparent same scsi_id as you've discovered.
What does multipath -ll output on this system? Also, could you please
run the following commands:
for d in /dev/sda /dev/sdb; do echo "page 0x80: $d:'$(sudo /lib/udev/scsi_id
--whitelisted --page=0x80 --device=$d)'"; done
for d in /dev/sda /dev/sdb; do echo "page 0x83: $d:'$(sudo /lib/udev/scsi_id
--whitelisted --page=0x83 --device=$d)'"; done
for d in /dev/sda /dev/sdb; do echo "page pre: $d:'$(sudo /lib/udev/scsi_id
--whitelisted --page=pre-spc3-83 --device=$d)'"; done
In case we're dealing here with non-standard devices, I'd like to
whether there is an alternative method we can use that would get better
results. We've seen here that page 0x83 was used, but we should find out
whether 0x80 is available, or if this also needs kernel/driver work.
** Changed in: multipath-tools (Ubuntu)
Status: Triaged => Incomplete
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https://bugs.launchpad.net/bugs/1463046
Title:
installation of multipath-tools-boot can break boot
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