On Sat, 2015-12-12 at 13:16 -0700, Chris Murphy wrote: > > What is the better way to get data? send/receive works only with RO > > snapshots. Is there another way to preserve subvolumes and CoW > > structure (a lot of files was copied between subvols using "cp > > --reflink=always")? Or just rsync'ing files is all what I can do? > > cp -a or rsync -a is all I can think of. To start to get it back to > normal, you can use duperemove. While that doesn't create subvolumes, > it'll at least find duplicate extents and use reflinks for those. So > it's in effect the same thing you have now, just lacking the > subvolume > structure. If he can still write to the fs, he could just create a ro-snapshot of the rw ones? Of course if the fs is already damaged, that may cause even more damage... so this should only be made on a clone of the fs.
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