Bug#567019: kpartx: multipath partition devices are missing

[Ferenc Wagner]

Package: kpartx
Version: 0.4.8-14+lenny2
Severity: normal

Hi,

I'd like to boot from a partitioned multipath device, but the device nodes
corresponding to the partitions aren't created.  At the (initramfs) prompt:

(initramfs) multipath -ll
nfs (360060160ec612000f6f237e09406df11) dm-0 DGC     ,RAID 5        
[size=5.0G][features=1 queue_if_no_path][hwhandler=1 emc]
\_ round-robin 0 [prio=2][active]
 \_ 1:0:1:0 sdb 8:16  [active][ready]
 \_ 0:0:1:0 sdd 8:48  [active][ready]
\_ round-robin 0 [prio=0][enabled]
 \_ 1:0:0:0 sda 8:0   [active][ready]
 \_ 0:0:0:0 sdc 8:32  [active][ready]

which looks perfectly good, but

(initramfs) ls -l /dev/disk/by-id
lrwxrwxrwx    1 0        0              16 Jan 26 17:38 dm-name-nfs -> ../../mapper/nfs
lrwxrwxrwx    1 0        0              16 Jan 26 17:38 dm-uuid-mpath-360060160ec612000f6f237e09406df11 -> ../../mapper/nfs
lrwxrwxrwx    1 0        0               9 Jan 26 17:50 scsi-360060160ec612000f6f237e09406df11 -> ../../sda
lrwxrwxrwx    1 0        0              10 Jan 26 17:38 scsi-360060160ec612000f6f237e09406df11-part1 -> ../../sdd1
lrwxrwxrwx    1 0        0              10 Jan 26 17:38 scsi-360060160ec612000f6f237e09406df11-part2 -> ../../sdd2
lrwxrwxrwx    1 0        0               9 Jan 26 17:38 scsi-SIBM-ESXSST936701LC_F3LC065GL00007604NMST -> ../../sde
lrwxrwxrwx    1 0        0              10 Jan 26 17:38 scsi-SIBM-ESXSST936701LC_F3LC065GL00007604NMST-part1 -> ../../sde1
lrwxrwxrwx    1 0        0              10 Jan 26 17:38 scsi-SIBM-ESXSST936701LC_F3LC065GL00007604NMST-part2 -> ../../sde2
lrwxrwxrwx    1 0        0               9 Jan 26 17:50 wwn-0x60060160ec612000 -> ../../sda
lrwxrwxrwx    1 0        0              10 Jan 26 17:38 wwn-0x60060160ec612000-part1 -> ../../sdd1
lrwxrwxrwx    1 0        0              10 Jan 26 17:38 wwn-0x60060160ec612000-part2 -> ../../sdd2

which feels rather confused (sd[a-d] are the paths, sde is a local disk).
Basically, I miss dm-name-nfs-part[12] and the corresponding /dev/mapper/nfs-part[12]
devices.

(initramfs) kpartx -l /dev/mapper/nfs
nfs1 : 0 385497 /dev/mapper/nfs 63
nfs2 : 0 10088820 /dev/mapper/nfs 385560

which is about right, kpartx -a /dev/mapper/nfs; vgchange -ay nfs lets the boot
conclude normally (/dev/mapper/nfs2 is my PV), although /dev/mapper/nfs1
disappears, so later I get

Checking file systems...fsck from util-linux-ng 2.16.2
fsck.ext2: Bad magic number in super-block while trying to open /dev/mapper/nfs1

but that's probably the same issue striking again.
/lib/udev/rules.d/60-kpartx.rules is in place and should work, but somehow it
does not.  At least the above device/partition mixup is not present in the booted
system:

lrwxrwxrwx 1 root root  9 2010-01-26 18:58 scsi-360060160ec612000f6f237e09406df11 -> ../../sdd
lrwxrwxrwx 1 root root 10 2010-01-26 18:57 scsi-360060160ec612000f6f237e09406df11-part1 -> ../../sdd1
lrwxrwxrwx 1 root root 10 2010-01-26 18:57 scsi-360060160ec612000f6f237e09406df11-part2 -> ../../sdd2
lrwxrwxrwx 1 root root  9 2010-01-26 18:58 wwn-0x60060160ec612000 -> ../../sdd
lrwxrwxrwx 1 root root 10 2010-01-26 18:57 wwn-0x60060160ec612000-part1 -> ../../sdd1
lrwxrwxrwx 1 root root 10 2010-01-26 18:57 wwn-0x60060160ec612000-part2 -> ../../sdd2

Interestingly,

lrwxrwxrwx 1 root root 17 2010-01-26 18:57 /dev/disk/by-id/dm-name-nfs1 -> ../../mapper/nfs1

is also present, although broken in the booted system.
Udev changed a lot since Lenny, I'd appreciate some help finding the problem.
-- 
Thanks,
Feri.

-- System Information:
Debian Release: 5.0.3
  APT prefers stable
  APT policy: (500, 'stable'), (50, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-trunk-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages kpartx depends on:
ii  dmsetup                   2:1.02.27-4    The Linux Kernel Device Mapper use
ii  libc6                     2.7-18lenny2   GNU C Library: Shared libraries
ii  libdevmapper1.02.1        2:1.02.27-4    The Linux Kernel Device Mapper use
ii  udev                      0.125-7+lenny3 /dev/ and hotplug management daemo

kpartx recommends no packages.

kpartx suggests no packages.

-- no debconf information