Quoting Andrei Borzenkov <arvidj...@gmail.com>:
09.09.2019 20:11, webmas...@zedlx.com пишет:
...
Forgot to mention this part.
If your primary objective is to migrate your data to another device
online (mounted, without unmount any of the fs).
This is not the primary objective. The primary objective is to produce a
full, online, easy-to-use, robust backup. But let's say we need to do
migration...
Then I could say, you can still add a new device, then remove the old
device to do that.
If the source filesystem already uses RAID1, then, yes, you could do it,
You could do it with any profile.
but it would be too slow, it would need a lot of user intervention, so
many commands typed, so many ways to do it wrong, to make a mistake.
It requires exactly two commands - one to add new device, another to
remove old device.
Yes, sorry I got a bit confused.
The point is that migration is not the objective. The objective could,
possibly, be restated as: make another copy of the filesystem.
Migration is something different.
Too cumbersome. Too wastefull of time and resources.
Do you mean your imaginary full backup will not read full filesystem?
Otherwise how can it take less time and resources?
My imaginary full backup needs to read and write the entire filesystem.
It can't take less than that.
