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Re: [dm-devel] Shared snapshots



does the origin device or cow  device can be resized dynamically?
once created the multisnapshot device 'ms':
echo 0 `blockdev --getsize /dev/mapper/vg1-lv1` multisnapshot /dev/mapper/vg1-lv1 /dev/mapper/vg1-lv2 16 0 mikulas 0|dmsetup create ms
vg1-lv1, vg1-lv2, ms, if all of them can be resized dynamically?
 
thank you very much!
 
 
2009/12/16 Mikulas Patocka <mpatocka redhat com>
Hi

I uploaded new shared snapshots here:
http://people.redhat.com/mpatocka/patches/kernel/new-snapshots/devel/

changes:

- Broken to separate patches, one patch per file. The last patch adds all
the files to Makefile and makes it all compile. It allows you to ack
patches individually. I didn't use stubs to compile intermediate patches,
the problem is that if multiple patches modify the same file, general
modifications to the code become harder. With one-patch-per-file I can
edit it with normal text editor and quilt regenerates the patches.

- Document on-disk format in dm-multisnap-mikulas-struct.h

- More functions are commented

- Removed /*printk ... */ statements. I left some #ifdefed debug routines,
they are non-trivial to write again

- Fixed a bug on big-endian systems

- Exposed interface for snapshots-of-snapshots, tested that they work

Mikulas

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