Bug#583372: lvm2: lvcreate -s ... followed by mount gives "mount: you must specify the filesystem type"

[yogg]

Package: lvm2
Version: 2.02.39-7
Severity: normal



-- System Information:
Debian Release: 5.0.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages lvm2 depends on:
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  libreadline5                5.2-3.1      GNU readline and history libraries
ii  lsb-base                    3.2-20       Linux Standard Base 3.2 init scrip

Versions of packages lvm2 recommends:
ii  dmsetup                      2:1.02.27-4 The Linux Kernel Device Mapper use

lvm2 suggests no packages.

-- no debconf information

Creating an snapshot followed by a mount sometimes fail with "mount: you must specify the filesystem type"

--- Logical volume ---
LV Name                /dev/lv1/data
VG Name                lv1
LV UUID                RewrbB-VQE4-rjLq-TTCF-tKfg-jt2S-Xmi0b9
LV Write Access        read/write
LV Status              available
# open                 2
LV Size                500,00 GB
Current LE             128000
Segments               1
Allocation             inherit
Read ahead sectors     auto
- currently set to     256
Block device           254:5

Script:
#!/bin/bash

lvcreate -s -L  5G -n data-snapshot /dev/lv1/data
mount /dev/lv1/data-snapshot /tmp/mnt


../testscript.sh
Logical volume "data-snapshot" created
mount: you must specify the filesystem type

The problem appears randomly. ~1/4 of the mounts will fail.
It seems lvcreate is not finished completely. If an "sleep 1" is added to the script everything works fine.

yogg