Unable to mount hammer file system Undo failed

Wojciech Puchar wojtek at wojtek.tensor.gdynia.pl
Thu Jul 19 03:42:02 PDT 2012

>> UFS use flat on disk structure. inodes are at known places.
>> I don't know how HAMMER data is placed, but seems everything is dynamic.
>> any link to description of HAMMER on disk layout?
> Please, read hammer(8) (at the subcommand "recover").
thank you very much.

While such recovery is painfully slow (it scans entire image not just 
selected predefined areas like fsck_ffs) it DO EXIST.

Seems i have to make some more tests with intentionally broken hardware, 
which i don't have at the moment.

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