Bug#439799: lvm2: async SCSI scanning breaks LVM initialization

[Ralf Hildebrandt]

Package: lvm2
Version: 2.02.26-1+b1
Severity: normal


Recent 2.6.x kernels use async SCSI Scanning by default:
http://lwn.net/Articles/185494/

In my particular setup this means that the kernel is still scanning the
SCSI devices when the /etc/init.d/lvm2 script tries it's do_start()
function:

/sbin/vgscan --ignorelockingfailure --mknodes || true
/sbin/vgchange -a y --ignorelockingfailure || return 2

I was able to "solve" this using:

sleep 5
/sbin/vgscan --ignorelockingfailure --mknodes || true
/sbin/vgchange -a y --ignorelockingfailure || return 2

which is not very elegant.

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.22.5 (SMP w/4 CPU cores)
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/bash

Versions of packages lvm2 depends on:
ii  libc6                     2.6.1-1+b1     GNU C Library: Shared libraries
ii  libdevmapper1.02.1        2:1.02.20-2    The Linux Kernel Device Mapper use
ii  libncurses5               5.6+20070812-1 Shared libraries for terminal hand
ii  libreadline5              5.2-3          GNU readline and history libraries
ii  libselinux1               2.0.15-2+b1    SELinux shared libraries
ii  libsepol1                 2.0.3-1+b1     Security Enhanced Linux policy lib

lvm2 recommends no packages.

-- debconf information:
  lvm2/snapshots: