Date: Wed, 08 Aug 2012 08:07:57 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-questions@freebsd.org Subject: Re: compare zfs xfs and jfs o Message-ID: <5022104D.8070402@infracaninophile.co.uk> In-Reply-To: <alpine.BSF.2.00.1208072309370.1652@wojtek.tensor.gdynia.pl> References: <793d6519ca3648de7634faff1829b9f7@remailer.privacy.at> <5021641E.4030206@une.net.co> <alpine.BSF.2.00.1208072309370.1652@wojtek.tensor.gdynia.pl>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA5195D1E6F5489F17009C545 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 07/08/2012 22:09, Wojciech Puchar wrote: > Of course "ZFS doesn't need fsck". Until it fails. It doesn't need fsck for the normal case of filesystem corruption due to system crashes: in that case, you stand to lose maybe the last one or two IO transactions that hadn't made it onto the disk yet, but the data that was already on the disk will still be consistent. Needing fsck because the drive is failing and not able to store and retrieve data reliably any more is a whole different thing. ZFS at least will discover that this is happening due to the built-in checksumming and avoid many instances of silent corruption. What it can't do is take a filesystem containing random errors and reconstruct a pristine version from it. But then what filesystem can? Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enigA5195D1E6F5489F17009C545 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlAiEE0ACgkQ8Mjk52CukIxjCACeM+r4AQeOZJEb2VS5+aLViWxH oTAAnA6JfAyR+0P6NltF2J+xAWGzNrPd =UUAZ -----END PGP SIGNATURE----- --------------enigA5195D1E6F5489F17009C545--
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