I am using a new up to date Wheezy system and was having very poor success with lvmremove - specifically with mylvmbackup. I needed this to be reliable and it was probably failing roughly 70-80% of the time.
As a test I built the version in Sid (as of 21/08/2013) on my Wheezy machine and this appears to have solved it. I elaborated on Anis' test as follows so I could emulate closely what mylvmbackup was doing #!/bin/bash for i in $(seq 1 50) ; do echo -n "[$i] " date lvcreate -n mysql_snapshot -L 512m -s vgedJY67/mysql || break mount /dev/vgedJY67/mysql_snapshot /mnt/mysql_snapshot && echo "Mounted /mnt/mysql_snapshot" || break tar -czf /tmp/mysql.tar.gz /mnt/mysql_snapshot 2> /dev/null && echo "Backed up MYSQL" || break umount /mnt/mysql_snapshot && echo "Unmounted /mnt/mysql_snapshot" || break lvremove -f vgedJY67/mysql_snapshot || break sleep 1 done Using the version in Wheezy I ran this script 10 times and the furthest it got was to the 3rd loop with it mostly failing on the 1st! Terrible... After using the Sid version (after a reboot) it seems to work 100%. I decided to up the retries of the loop to 500 just to be certain. It passed all 500... Great! -- System Information: Debian Release: 7.1 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages lvm2 depends on: ii dmsetup 2:1.02.77-5.jamesr1 ii initscripts 2.88dsf-41 ii libc6 2.13-38 ii libdevmapper-event1.02.1 2:1.02.77-5.jamesr1 ii libdevmapper1.02.1 2:1.02.77-5.jamesr1 ii libreadline5 5.2+dfsg-2~deb7u1 ii libudev0 175-7.2 ii lsb-base 4.1+Debian8+deb7u1 -- Versions: > apt-cache policy libdevmapper1.02.1 libdevmapper-event1.02.1 dmsetup lvm2 libdevmapper1.02.1: Installed: 2:1.02.77-5.jamesr1 Candidate: 2:1.02.77-5.jamesr1 Version table: *** 2:1.02.77-5.jamesr1 0 100 /var/lib/dpkg/status 2:1.02.74-7 0 500 http://ftp.iinet.net.au/debian/debian/ wheezy/main amd64 Packages libdevmapper-event1.02.1: Installed: 2:1.02.77-5.jamesr1 Candidate: 2:1.02.77-5.jamesr1 Version table: *** 2:1.02.77-5.jamesr1 0 100 /var/lib/dpkg/status 2:1.02.74-7 0 500 http://ftp.iinet.net.au/debian/debian/ wheezy/main amd64 Packages dmsetup: Installed: 2:1.02.77-5.jamesr1 Candidate: 2:1.02.77-5.jamesr1 Version table: *** 2:1.02.77-5.jamesr1 0 100 /var/lib/dpkg/status 2:1.02.74-7 0 500 http://ftp.iinet.net.au/debian/debian/ wheezy/main amd64 Packages lvm2: Installed: 2.02.98-5.jamesr1 Candidate: 2.02.98-5.jamesr1 Version table: *** 2.02.98-5.jamesr1 0 100 /var/lib/dpkg/status 2.02.95-7 0 500 http://ftp.iinet.net.au/debian/debian/ wheezy/main amd64 Packages -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org