New snapshots design doc
Added 2021-03-09 21:42:31 +0000 UTCSnapshots are really coming together - the whole thing is starting to look shockingly elegant and simple (you wouldn't be able to guess from the design doc how many years it took to get to that point...)
Comments welcome:
https://bcachefs.org/Snapshots/
Comments
Will recursive snapshots be possible? That is one nice feature of ZFS!
Demi Obenour
2021-09-30 10:08:11 +0000 UTCYou won't be able to create any more snapshots. So you'll be able to create one snapshot a second 34 years.
Kent Overstreet
2021-03-12 01:36:23 +0000 UTCI'll have a look, but it will be difficult to be more elegant than the Rodeh b-trees used in Btrfs :-) https://dominoweb.draco.res.ibm.com/reports/h-0248.pdf
2021-03-10 13:14:05 +0000 UTCIt's unsigned, so it's ~4B. I'm also curious about that.
brunoais
2021-03-10 07:47:39 +0000 UTCwhat happens when a subvolume can no longer allocate new snapshot ids because it's gone through all ~2 billion? (e.g. because a bug in automation generates many more snapshots than anticipated)
Ayla Ounce
2021-03-10 01:32:15 +0000 UTC
