On Mon, Mar 14, 2016 at 09:39:51PM +0100, Henk Slager wrote: > >> BTW, I restored and mounted your 20160307-fanbtr-image: > >> > >> [266169.207952] BTRFS: device label fanbtr devid 1 transid 22215732 /dev/loop0 > >> [266203.734804] BTRFS info (device loop0): disk space caching is enabled > >> [266203.734806] BTRFS: has skinny extents > >> [266204.022175] BTRFS: checking UUID tree > >> [266239.407249] attempt to access beyond end of device > >> [266239.407252] loop0: rw=1073, want=715202688, limit=705760000 > >> [266239.407254] BTRFS error (device loop0): bdev /dev/loop0 errs: wr > >> 1, rd 0, flush 0, corrupt 0, gen 0 > >> [266239.407272] attempt to access beyond end of device > >> .. and 16 more > >> > >> As a quick fix/workaround, I truncated the image to 1T > > > > The original fs was 417 GiB in size. What size does the image claim? > > ls -alFh of the restored image showed 337G I remember. > btrfs fi us showed also a number over 400G, I don't have the > files/loopdev anymore. sounds legit. > It could some side effect of btrfs-image, I only have used it for > multi-device, where dev id's are ignore, but total image size did not > lead to problems. The original "ofanbtr" seems to have a problem, since btrfs check /media/tempdisk says: > > [10/509]mh@fan:~$ sudo btrfs check /media/tempdisk/ > > Superblock bytenr is larger than device size > > Couldn't open file system > > [11/509]mh@fan:~$ > > > > Can this be fixed? > > What I would do in order to fix it, is resize the fs to let's say > 190GiB. That should write correct values to the superblocks I /hope/. > And then resize back to max. It doesn't: [20/518]mh@fan:~$ sudo btrfs filesystem resize 300G /media/tempdisk/ Resize '/media/tempdisk/' of '300G' [22/520]mh@fan:~$ sudo btrfs check /media/tempdisk/ Superblock bytenr is larger than device size Couldn't open file system [23/521]mh@fan:~$ df -h > Maybe btrfs check --repair can also fix it, but before doing --repair > or other actions, I would see what else besides btrfs could be wrong, > see also suggestion of Holger. Like putting the filesystem on an unencrypted medium? Sorry, no, private data, paranoia. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
