Dne 22. 10. 19 v 17:29 Dalebjörk, Tomas napsal(a):
Thanks for feedback,
But, it would be better if the cow device could be recreated in a faster way,
mentioning that all blocks are present on an external device, so that the LV
volume can be restored much quicker using "lvconvert --merge" command.
That would be super cool!
Imagine backing up multi terrabyte sized volumes in minutes to external
destinations, and restoring the data in seconds using instant recovery by
re-creating or emulating the cow device, and associating all blocks to an
external device?
Hi
I do not want to break your imagination here, but that is exactly the thing
you can do with thin provisioning and thin_delta tool.
You just work with LV, take snapshot1, take snapshot2,
send delta between s1 -> s2 to remove machine,
remove s1, take s3, send delta s2 -> s3...
It's just not automated by lvm2 ATM...
Using this with old snapshot would be insanely inefficient...
Regards
Zdenek
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