http://bugzilla.kernel.org/show_bug.cgi?id=12533 Summary: with extents, ext4 block count wrong Product: File System Version: 2.5 KernelVersion: 2.6.28 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx ReportedBy: markus@xxxxxxxxxxx Latest working kernel version: 2.6.28 Earliest failing kernel version: 2.6.28 Distribution: Gentoo Hardware Environment: i686 Block size: 4096 I'm trying to recover from a massive data loss with ext4 (root directory erased), so I'm looking at lots of hexedit output. Here's one thing that looks quite wrong: ED 41 E8 03 00 10 00 00 16 81 73 49 16 81 73 49 16 81 73 49 00 00 00 00 E8 03 03 00 08 00 00 00 00 00 08 00 02 00 00 00 0A F3 01 00 04 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 3E 17 13 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 61 27 09 0B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 The 4 in the second byte indicates this is a directory. The second word says the file size is 4096 bytes, the same as the block size. The eight word says there are eight blocks. Last, the extent header has one extent (second half of the 11th word), and this one extent has a block count of 1 (first half of 15th word). The directory contains a single directory. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
