Il 2020-09-15 23:47 Zdenek Kabelac ha scritto:
You likely don't need such amount of 'snapshots' and you will need to
implement something to remove snapshot without need, so i.e. after a
day you will keep maybe 'every-4-hour' and after couple days maybe
only a day-level snapshot. After a month per-week and so one.
Agree. "Snapshot-thinning" is an essential part of snapshot management.
Speaking of thin volumes - there can be at most 2^24 thin devices
(this is hard limit you've ask for ;)) - but you have only ~16GiB of
metadata to store all of them - which gives you ~1KiB of data per such
volume -
quite frankly this is not too much - unless as said - your volumes
are not changed at all - but then why you would be building all this...
That all said - if you really need that intensive amount of
snapshoting,
lvm2 is likely not for you - and you will need to build something on
your own,
as you will need way more efficient and 'targeted' solution for your
purpose.
Thinvols are not activated by default - this means it should be not a
big problem managing some hundreds of them, as the OP ask. Or am I
missing something?
Regards.
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