Today I setup a system with two LUNs (could do more if needed), both are
connected to their own pair of two HBAs, again each with 2 paths, and I
could complete a default 25.10 installation on the first LUN (however,
on a different architecture):
$ sudo multipath -ll
mpatha (3600507630bffd3d70000000000000005) dm-0 IBM,2107900
size=96G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
|- 0:0:0:1074085888 sda 8:0 active ready running
|- 0:0:1:1074085888 sdb 8:16 active ready running
|- 1:0:0:1074085888 sdc 8:32 active ready running
`- 1:0:1:1074085888 sdd 8:48 active ready running
mpathb (3600507630bffd3d70000000000000107) dm-4 IBM,2107900
size=96G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
|- 3:0:0:1074216961 sdg 8:96 active ready running
|- 3:0:1:1074216961 sdh 8:112 active ready running
|- 2:0:0:1074216961 sde 8:64 active ready running
`- 2:0:1:1074216961 sdf 8:80 active ready running
I installed the OS on the first LUN, but did nothing with the second.
$ sudo dmsetup ls --tree
mpatha-part1 (252:1)
└─mpatha (252:0)
├─ (8:48)
├─ (8:32)
├─ (8:16)
└─ (8:0)
mpathb (252:4)
├─ (8:80)
├─ (8:64)
├─ (8:112)
└─ (8:96)
ubuntu--vg-ubuntu--lv (252:3)
└─mpatha-part2 (252:2)
└─mpatha (252:0)
├─ (8:48)
├─ (8:32)
├─ (8:16)
└─ (8:0)
So I need to know more about your particular setup:
# of HBAs
# LUNs
# paths
# if you installed on just one LUN (and didn't touched the other during
install)
# or if you did an install across LUNs (parts of the filesystem on LUN #1 and
other parts on LUN #2)
etc.
to be able to recreate a system that is closer to your ...
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https://bugs.launchpad.net/bugs/2080474
Title:
ubuntu installation failing for systems having SAN disk
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