Public bug reported:
Binary package hint: multipath-tools-boot
After upgrading some servers to 8.04.1, booting from my multipath LVM
volumes often fails.
Hardware:
* IBM HS21 blades
* Emulex HBAs
* EMC Clariion CX-3 SAN, Fibre Channel
Configuration:
EMCs "best practice" configuration in /etc/multipathd.conf
/boot on normal device, but multipathed.
/ on LVM logical volume.
Symptoms:
During the boot sequence, the initrd-hooks (multipath-tools-boot) display that
it is detecting mulipaths.
After a little delay, I see that the lpfc drivers detect that fibre channel
paths, and brings them online.
I get dumped to a busybox shell, as it is unable to detect the multipath
devices the LVM volumes for root are supposed to be on.
I run "/etc/init.d/multipath-tools start", and press ctrl-d to exit the shell.
System boots as it should.
I have a feeling that the order of startup scripts needs to be changed,
or that a delay has to be introduced in one of the scripts so that the
fibre channel luns have had time to be detected.
This happens 4 times out of 5; Sometimes things get detected as it
should. Timing is everything, I guess. :-)
Other:
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 8.04.1
Release: 8.04
Codename: hardy
multipath-tools-boot:
Installed: 0.4.8-7ubuntu2
** Affects: multipath-tools (Ubuntu)
Importance: Undecided
Status: New
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Root LVM volume on multipath fibre-channel often does not detect properly on
boot
https://bugs.launchpad.net/bugs/276696
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