Log of /trunk/vz-clone.pl

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Revision 27 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 23:42:24 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 4632 byte(s)
Diff to previous 26

variable to skip snapshot usage,
fixed logic which machine to vzctl stop on create/destroy

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Revision 26 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 23:23:20 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 4347 byte(s)
Diff to previous 25

clone lv are now always named vz-clone-10VEID and not
dependent on OpenVZ lv name

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Revision 25 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 23:19:33 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 4354 byte(s)
Diff to previous 24

new syntax: subcommands create, umount and destroy

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Revision 24 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 18:54:41 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 3651 byte(s)
Diff to previous 23

rsync know how to handle device and special files, ssync doesn't.
So it's out...

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Revision 23 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 16:58:01 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 3794 byte(s)
Diff to previous 22

Create new logical volume for each clone of virtual machine.
That allows snapshots to actually works, because otherwise,
we would have to write content twice:

1. new cloned copy on disk
2. in snapshot (so that we see "old" copy)

This requires snapshot partition at least as big as filesystem
of cloned machine. It also slows down cloning. 

The root of the problem is usage of vg logical volume both as source
(which we want to have snapshot of to achieve consistent copy)
and destination for new cloned fs. Creating new logical volume per
VE cloned allows easy management and update also.

But, this might be optional (and there is fallback in the codei
if there is no lvm for vz data) if we want to create another
persistant clone (TODO).

If possible, we will try to use ssync binary (which sadly
isn't packaged for Debian) because it's much faster than
rsync.

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Revision 22 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 13:19:26 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 2342 byte(s)
Diff to previous 21

hint how to add NAT rule for cloned VE

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Revision 21 - (view) (annotate) - [select for diffs]
Modified Thu Oct 4 13:12:08 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 2263 byte(s)
Diff to previous 20

prepare and use temporary lvm snapshot while coping data,
annotate changed configuration variables,
new VE will have prefix 10 and first octet of IP adress 10.

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Revision 20 - (view) (annotate) - [select for diffs]
Added Thu Oct 4 11:30:05 2007 UTC (16 years, 6 months ago) by dpavlin
File length: 903 byte(s)

a simple script to create clone of VE