DragonFly BSD
DragonFly users List (threaded) for 2012-07
[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]

Re: Unable to mount hammer file system Undo failed


From: Markus Pfeiffer <markus.pfeiffer@xxxxxxxxxxx>
Date: Thu, 19 Jul 2012 10:51:37 +0000

--GPJrCs/72TxItFYR
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Thu, Jul 19, 2012 at 12:42:02PM +0200, Wojciech Puchar wrote:
> >> UFS use flat on disk structure. inodes are at known places.
> >>=20
> >> I don't know how HAMMER data is placed, but seems everything is dynami=
c.
> >>=20
> >> any link to description of HAMMER on disk layout?
> >
> > Please, read hammer(8) (at the subcommand "recover").
> thank you very much.
>=20
> While such recovery is painfully slow (it scans entire image not just=20
> selected predefined areas like fsck_ffs) it DO EXIST.
>=20
> Seems i have to make some more tests with intentionally broken hardware,=
=20
> which i don't have at the moment.
>=20


just dd /dev/random and overwrite a few sectors?

Markus
--=20
Markus Pfeiffer, University of St Andrews
email: markus.pfeiffer@morphism.de | xmpp: markus.pfeiffer@jabber.morphism.=
de

--GPJrCs/72TxItFYR
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.17 (FreeBSD)
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=fBu/
-----END PGP SIGNATURE-----

--GPJrCs/72TxItFYR--



[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]