Hi again,
I've copied the whole filesystem elsewhere (to a file) with `ddrescue'. It found one damaged area on the drive, but apparently neither at start nor at the end of partition. The FS on the drive was marked as `dirty' (requiring recovery upon mount). My guess is that kernel attempted recovery, and gave up upon read error. Unfortunately, the `norecovery' option did not help with the drive; it only helped once i've moved whole FS to file. Log from ddrescue: # Rescue Logfile. Created by GNU ddrescue version 1.14 # Command line: ddrescue /dev/sdc3 sda3 sda3.log # current_pos current_status 0x149E0CCC00 + # pos size status 0x00000000 0x149E0CC000 + 0x149E0CC000 0x00001000 - 0x149E0CD000 0x11220D3000 + my understanding is, the following line describes the damaged area, format: start length status-marker (`-' for error) 0x149E0CC000 0x00001000 - Once the FS was copied to a file, it mounted correctly: # mount -o ro,loop,norecovery ./sda3.img ./some-mountpoint My gripe with current (linux-3.5.0) NILFS2 driver is that I couldn't tell it to ignore read errors and thus force it to mount the filesystem. Ony after I've moved some 160GB of FS to a file (that's a bit tedious :P) it opened the FS just fine. Cheers, -- dexen deVries 1972 - Dennis Ritchie invents a powerful gun that shoots both forward and backward simultaneously. Not satisfied with the number of deaths and permanent maimings from that invention he invents C and Unix. -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
