[issue1984] hammer mount fails after crash - HAMMER: FIFO record bad head signature ..

["Thomas Nikolajsen \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

New submission from Thomas Nikolajsen <thomas.nikolajsen@mail.dk>:

On master from February 6th, I had a system freeze during 'hammer cleanup'
on a x86_64 system using SMP kernel. System stopped responding on console and
network (e.g. escape to debugger didnt work).

After power cycling boot fails on mount of this root hammer file system.

Booting from another partition (i386) R/W mount of affected hammer file system
fails, but R/O mount succeeds, see below.

I doesn't look like a disk error as it is quite new and I haven't experienced
errors reading or writing to this disk.

This file system doesn't contain any valuable data.

 -thomas

- R/W mount fails:
HAMMER(ROOT64) recovery check seqno=008f373d
HAMMER(ROOT64) recovery range 3000000000242a80-30000000001c9a60
HAMMER(ROOT64) recovery nexto 30000000001c9a60 endseqno=00990a0a
HAMMER(ROOT64) recovery undo  3000000000242a80-30000000001c9a60 (108556256 
bytes)(RW)
HAMMER(ROOT64) Found REDO_SYNC 3000000000159958
HAMMER(ROOT64) Ignoring extra REDO_SYNC records in UNDO/REDO FIFO.
HAMMER(ROOT64) Ignoring extra REDO_SYNC records in UNDO/REDO FIFO.
HAMMER(ROOT64) recovery complete
HAMMER(ROOT64) recovery redo  3000000000242a80-30000000001c9a60 (108556256 
bytes)(RW)
HAMMER(ROOT64) Embedded extended redo 3000000000159958, -108097240 extbytes
HAMMER: FIFO record bad head signature a733 at 3000000000159958
HAMMER(ROOT64) Illegal UNDO TAIL signature at 3000000000159958
HAMMER(ROOT64) End redo recovery

- R/O mount succeeds:
HAMMER(ROOT64) recovery check seqno=008f373d
HAMMER(ROOT64) recovery range 3000000000242a80-30000000001c9a60
HAMMER(ROOT64) recovery nexto 30000000001c9a60 endseqno=00990a0a
HAMMER(ROOT64) recovery undo  3000000000242a80-30000000001c9a60 (108556256 
bytes) (RO)
HAMMER(ROOT64) Found REDO_SYNC 3000000000159958
HAMMER(ROOT64) Ignoring extra REDO_SYNC records in UNDO/REDO FIFO.
HAMMER(ROOT64) Ignoring extra REDO_SYNC records in UNDO/REDO FIFO.
HAMMER(ROOT64) recovery complete
HAMMER: recovered aliased 800000037eeac000
HAMMER: recovered aliased 800000037ebc8000
HAMMER: recovered aliased 800000037eb94000
HAMMER: recovered aliased 800000037eb94000

----------
messages: 9584
nosy: thomas.nikolajsen
status: unread
title: hammer mount fails after crash - HAMMER: FIFO record bad head signature ..

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DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue1984>
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