Hi, On Mon, May 11, 2026 at 02:13:42PM +0200, Arno Lehmann wrote: > an LVM snapshot is *not* an exact copy of the original volume, and of > course much less so of the partition, disk, or anything else. So a > block level dump of an LVM snapshot is not something you can just dump > back as a disaster recovery step.
Can you expand upon this? It's not my experience. I use LVM snapshots pretty much every week and in every case they are bit for bit copies of the block device they are a snapshot of. Any time I have reverted the block device to the snapshot, it has been as if that data was put back on there any other way. Do you mean, for example, the bits that live outside of block devices? Such as bootloaders, partition tables and the like? (I've already spoken about how a block device snapshot is limited and agree that it doesn't solve the whole problem here. I'm not able to agree that you "can't just dump a snapshot back". I do it all the time!) Thanks, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting
