Bug #2287
Updated by Anonymous over 5 years ago
Hello. After having experienced a few panics, the root filesystem is no longer able to be mounted, even in read-only mode: (booted from a USB stick) # mount -thammer -o ro /dev/da0s1d /mnt HAMMER(ROOT) recovery check seqno=3364b54c HAMMER(ROOT) Illegal UNDO TAIL signature at 300000001967c000 HAMMER(ROOT) recovery failure during seqno fwdscan HAMMER(ROOT) recovery complete Failed to recover HAMMER filesystem on mount hammer: mount on /mnt: Input/output error I haven't tried `hammer recover' yet, as I have no idea what it does. Is there anything I can do to recover from this situation? This is a machine dedicated to testing DragonFly stability, so I can install from scratch in the worst case. The error message looks similar to the one described in issue1984, but in this case even R/O mount fails. The current kernel is built from 4f459, and it occasionally panics even under almost no CPU or disk load. It could be a hardware failure, but I couldn't find any indication of it as far as I watched the console while it booted with the USB stick. The previous kernel was built from 190f1b64, and it survived 10 days without panic under pbulk load. Best Regards, YONETANI Tomokazu.