On Jan 13, 2014, at 11:03 PM, Duncan <1i5t5.dun...@cox.net> wrote: > Chris Murphy posted on Mon, 13 Jan 2014 17:40:33 -0700 as excerpted: > >> If you decide to backup, reformat, restore, then first I suggest >> >> btrfs-image -c 9-t 4 /dev/sdX /mnt/<pathtoanothervolume+filename> >> >> You can keep it handy in case a dev asks for it or you can attach it to >> a kernel.org bug report. > > I've not actually done one of these, yet. How big are they? The manpage > says it's basically the metadata only (data is zeroed), so I'd guess one > could expect it to be about the size of metadata as reported by btrfs fi > df (obviously, when it could still mount if it's now unmountable), right?
# btrfs fi df /mnt/isos Data, single: total=196.01GiB, used=185.92GiB System, DUP: total=8.00MiB, used=48.00KiB System, single: total=4.00MiB, used=0.00 Metadata, DUP: total=1.00GiB, used=289.53MiB Metadata, single: total=8.00MiB, used=0.00 193M -rw-r--r--. 1 root root 193M Jan 14 00:44 sdb.img Guess that's too big to attach to a bugzilla bug. Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
