Bash script to convert an OpenVZ ploop container back to simfs

convert_ploop_to_simfs.sh

#!/bin/sh
# ./convert_ploop_to_simfs.sh VEID
# chmod +x convert_ploop_to_simfs.sh
rsync_options='-aHAX --progress --stats --numeric-ids --delete'
partition='vz'
if [ ! -e /etc/vz/conf/$1.conf ]; then
        echo "Virtual server configuration file: /etc/vz/conf/$1.conf does not exist."
        exit 1
fi
if [ ! -d /$partition/private/$1/root.hdd ]; then
        echo "Server does not have a ploop device"
        exit 1
fi
if [ ! -d /$partition/private/$1 ]; then
        echo "Server does not exist"
        exit 1
fi
# Get disk space in G of current VPS
#disk=`vzctl exec $1 df -BG | grep ploop | awk {'print $2'} | head -n1`
#if [ ! $disk ]; then
#        echo "Could not retrieve disk space figure.  Is VPS running?"
#        exit 1
#fi
# Create and mount file system
mkdir -p /$partition/private/1000$1/
#ploop init -s $disk /$partition/private/1000$1/root.hdd/root.hdd
cp /etc/vz/conf/$1.conf /etc/vz/conf/1000$1.conf
vzctl mount 1000$1
# Rsync over files (sync 1)
rsync $rsync_options /$partition/root/$1/. /$partition/private/1000$1/
# Stop primary, mount, sync final
vzctl stop $1
vzctl mount $1
rsync $rsync_options /$partition/root/$1/. /$partition/private/1000$1/
vzctl umount $1
vzctl umount 1000$1
mv /$partition/private/$1 /$partition/private/$1.backup
mv /$partition/private/1000$1 /$partition/private/$1
vzctl start $1
# Cleanup
rm -f /etc/vz/conf/1000$1.conf
rmdir /vz/root/1000$1
# Verification
verify=`vzlist -H -o status $1`
if [ $verify = "running" ]; then
        echo "Virtual server conversion successful.  Verify manually then run: rm -Rf /$partition/private/$1.backup to remove backup."
else
        echo "Server conversion was not successful..Reverting.."
        mv -f /$partition/private/$1 /$partition/private/$1.fail
        mv /$partition/private/$1.backup /$partition/private/$1
        vzctl start $1
fi

Forgive the translation, I use an online translator.

I'm having errors using this script. Does anyone know the reason for the error?

sent 304943 bytes received 2155 bytes 614196.00 bytes/sec total size is 340738857 speedup is 1109.54 Unmounting file system at /vz/root/161 Unmounting device /dev/ploop58999 Container is unmounted CT is not mounted Starting container... Error in ploop_open_dd (di.c:288): Can't resolve /vz/private/161/root.hdd/DiskDescriptor.xml: No such file or directory Failed to read /vz/private/161/root.hdd/DiskDescriptor.xml Error in ploop_open_dd (di.c:288): Can't resolve /vz/private/161/root.hdd/DiskDescriptor.xml: No such file or directory Failed to read /vz/private/161/root.hdd/DiskDescriptor.xml Error in ploop_open_dd (di.c:288): Can't resolve /vz/private/161/root.hdd/DiskDescriptor.xml: No such file or directory Failed to read /vz/private/161/root.hdd/DiskDescriptor.xml Server conversion was not successful..Reverting.. Starting container...

There is an error. You must edit /etc/vz/$1.conf and set VE_LAYOUT=ploop to VE_LAYOUT=simfs otherwise vzctl searches the ploop disk.
Excellent script! Thank you.

I think you mean /etc/vz/conf/$1.conf

Actually, I don't see how this script does any conversion. It creates a new folder, copies content over (by rsync) stops and restarts the server, but where is any actual conversion taking place?

There's a "ploop init" line but it's commented out.

What's the point?

Actually, I don't see how this script does any conversion. It creates a new folder, copies content over (by rsync) stops and restarts the server, but where is any actual conversion taking place?

There's a "ploop init" line but it's commented out.

What's the point?

The script copies to a new VEID, which defaults to simfs. If I recall correctly it's (or was) a step needed to convert openvz to proxmox.

Change rsync_options to "-aHAX --progress --stats --numeric-ids --delete" which will keep ACLs, xattrs, numeric-ids and will delete files which changed between the two rsync stages.

Thanks for the tip. Updated (better late than never)