Hello, I have a broken btrfs file system on a laptop.
Debug material is available here: https://www.dropbox.com/sh/utv8b3qd0do6a04/zTwGQCrN9x Most importantly, the /home subvolume is lost. All attempts to recover data from it (btrfs-restore, mount -o recovery, btrfsck) have failed so far (/home is simply empty in the btrfs-restore output), although I was able to recover most of the other subvolumes and the main FS. The btrfs tools would typically segfault with failed assertions when analyzing the FS. Grepping through the entire volume shows that (at least parts of) /home are still available, but they seem to be disconnected from the main tree somehow, or the meta data is so corrupt that the tools bail out trying to find files under it. Making matters worse, the important data was encrypted using ecryptfs, so I need to recover the ciphertext first and then find a way to recover the plaintext (I do have the passphrase). The crash happened with a rather old OpenSUSE 12.2 kernel (3.4.11-2.16). The user says she was just surfing the web normally when the crash occured (no screenshot of the original crash, unfortunately). On the next boot, the btrfs root file system couldn't be mounted any more. After that I booted an OpenSUSE 12.3 rescue DVD and created the debug material shown above. Any hints how to retrieve files from the /home subvolume from this corrupt file system would be highly appreciated. Best regards Martin -- 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
