[Users] backup ploop

[Kevin Holly [Fusl]]

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Hi,

On 09/12/2014 01:05 AM, Nick Knutov wrote:
> How to backup ploop CT's using and not using snapshots if
> 
> 1) I do not need the state of running processes, only files 2) But
> I have mysql on some CTs and some files can be broken if they are 
> not synced/closed 3) Backup must be without downtime, I can't stop
> CT && make backup && run CT
> 

Maybe that's something for you (code is untested but *should* work)?

# define the container id
CTID=100

# copy any files in /vz/private/$CTID/ away but exclude file
/vz/private/$CTID/root.hdd/root.hdd
rsync ...

# remove all existing snapshots for this container (just to be sure
that the previous backup process did not crash)
for snapid in $(vzctl snapshot-list $CTID -HoUUID); do vzctl
snapshot-delete $CTID --id $snapid; done

# exec any necessary commands inside container BEFORE snapshot
vzctl exec $CTID '<run command to flush mysql onto the disk and
disable disk write access (write to memory for now)>'

# snapshot the container
vzctl snapshot $CTID --skip-suspend

# exec any necessary commands inside container AFTER snapshot
vzctl exec $CTID '<run command to flush mysql onto the disk and enable
disk write access again>'

# copy your /vz/private/$CTID/root.hdd/root.hdd file
rsync ...

# remove all existing snapshots for this container after we're done
for snapid in $(vzctl snapshot-list $CTID -HoUUID); do vzctl
snapshot-delete $CTID --id $snapid; done

- -- 
Best regards

Kevin Holly - root at hallowe.lt - http://hallowe.lt/
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