In an addition to the MP issues, LVM was misconfigured. We attempt
to repair this on one of the blades but the config file just wouldn't *take*.
I suspect there was something else going, especially since we didn't
even have direct access to the console and was forced to relay
directives to the customer to execute.
I set up a mock test environment to test the the filtering by
PCI device.
root@kickseed:/dev/disk/by-path# ls -l
total 0
lrwxrwxrwx 1 root root 8 2011-08-15 10:04 pci-0000:00:00.9-scsi-0:0:0:2 ->
/dev/sdc
lrwxrwxrwx 1 root root 9 2011-08-15 10:04 pci-0000:00:00.9-scsi-0:0:0:2-part1
-> /dev/sdc1
lrwxrwxrwx 1 root root 8 2011-08-15 10:04 pci-0000:00:00.9-scsi-0:0:0:3 ->
/dev/sdd
lrwxrwxrwx 1 root root 9 2011-08-15 10:04 pci-0000:00:00.9-scsi-0:0:0:3-part1
-> /dev/sdd1
lrwxrwxrwx 1 root root 8 2011-08-15 10:02 pci-0000:00:1f.2-scsi-0:0:0:0 ->
/dev/sda
lrwxrwxrwx 1 root root 9 2011-08-15 10:03 pci-0000:00:1f.2-scsi-0:0:0:0-part1
-> /dev/sda1
lrwxrwxrwx 1 root root 8 2011-08-15 10:03 pci-0000:00:1f.2-scsi-0:0:0:1 ->
/dev/sdb
lrwxrwxrwx 1 root root 9 2011-08-15 10:03 pci-0000:00:1f.2-scsi-0:0:0:1-part1
-> /dev/sdb1
Then, I commented out the existing "filter" directive on /etc/lvm/lvm.conf and
tested:
filter = ["a|/dev/disk/by-path/pci-0000:00:00.9-scsi.*|", "r/.*/" ]
and
filter = ["a|/dev/disk/by-path/pci-0000:00:1f.2-scsi.*|", "r/.*/" ]
lvmdiskscan confirms the filter directives.
root@kickseed:/dev/disk/by-path# lvmdiskscan
/dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0-part1 [ 7.45 GiB]
/dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:1-part1 [ 10.00 GiB]
0 disks
2 partitions
0 LVM physical volume whole disks
0 LVM physical volumes
root@kickseed:/dev/disk/by-path# lvmdiskscan
/dev/disk/by-path/pci-0000:00:00.9-scsi-0:0:0:2-part1 [ 10.00 GiB]
/dev/disk/by-path/pci-0000:00:00.9-scsi-0:0:0:3-part1 [ 10.00 GiB]
0 disks
2 partitions
0 LVM physical volume whole disks
0 LVM physical volumes
I'm going to leave this part of the effort to customer support. There are
no bugs in LVM filtering, simply execution issues.
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https://bugs.launchpad.net/bugs/824790
Title:
IBM DS3400 Will Not Bring Up Second Path
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