Hi, looks like a lot of random bitflips.
On Mon, Oct 10, 2016 at 11:50:14PM +0200, a...@aron.ws wrote: > item 109 has a few strange chars in its name (and it's truncated): > 1-x86_64.pkg.tar.xz 0x62 0x14 0x0a 0x0a > > item 105 key (261 DIR_ITEM 54556048) itemoff 11723 itemsize 72 > location key (606286 INODE_ITEM 0) type FILE > namelen 42 datalen 0 name: > python2-gobject-3.20.1-1-x86_64.pkg.tar.xz > item 106 key (261 DIR_ITEM 56363628) itemoff 11660 itemsize 63 > location key (894298 INODE_ITEM 0) type FILE > namelen 33 datalen 0 name: unrar-1:5.4.5-1-x86_64.pkg.tar.xz > item 107 key (261 DIR_ITEM 66963651) itemoff 11600 itemsize 60 > location key (1178 INODE_ITEM 0) type FILE > namelen 30 datalen 0 name: glibc-2.23-5-x86_64.pkg.tar.xz > item 108 key (261 DIR_ITEM 68561395) itemoff 11532 itemsize 68 > location key (660578 INODE_ITEM 0) type FILE > namelen 38 datalen 0 name: > squashfs-tools-4.3-4-x86_64.pkg.tar.xz > item 109 key (261 DIR_ITEM 76859450) itemoff 11483 itemsize 65 > location key (2397184 UNKNOWN.0 7091317839824617472) type 45 > namelen 13102 datalen 13358 name: 1-x86_64.pkg.tar.xzb namelen must be smaller than 255, but the number itself does not look like a bitflip (0x332e), the name looks like a fragment of. The location key is random garbage, likely an overwritten memory, 7091317839824617472 == 0x62696c0100230000 contains ascii 'bil', the key type is unknown but should be INODE_ITEM. > data > item 110 key (261 DIR_ITEM 9799832789237604651) itemoff 11405 itemsize > 62 > location key (388547 INODE_ITEM 0) type FILE > namelen 32 datalen 0 name: intltool-0.51.0-1-any.pkg.tar.xz > item 111 key (261 DIR_ITEM 81211850) itemoff 11344 itemsize 131133 itemsize 131133 == 0x2003d is a clear bitflip, 0x3d == 61, corresponds to the expected item size. There's possibly other random bitflips in the keys or other structures. It's hard to estimate the damage and thus the scope of restorable data. -- 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
