Date: Mon, 4 Jul 2011 12:59:41 -0700 From: Chip Camden <sterling@camdensoftware.com> To: freebsd-questions@freebsd.org Subject: Re: mount /unmount Message-ID: <20110704195941.GD2419@libertas.local.camdensoftware.com> In-Reply-To: <4E1217DB.1090809@infracaninophile.co.uk> References: <CAOgxTUikp5XODhus35vt783s607Y%2Bz8JE3UoxL1dV8f=rS19Kw@mail.gmail.com> <4E11C059.3090708@infracaninophile.co.uk> <CAOgxTUga77i5fzOd9p%2BU%2B9fhdHdkEug2B=0BA%2BepjdR%2B_bpxJQ@mail.gmail.com> <4E1217DB.1090809@infracaninophile.co.uk>
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--LTeJQqWS0MN7I/qa Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Quoth Matthew Seaman on Monday, 04 July 2011: > On 04/07/2011 15:53, tethys ocean wrote: > >> If a partition was not unmounted cleanly (eg. the machine crashed, or > >> > the power was cut off suddenly) then fsck(8) should be used to check= and > >> > fix any problems on the filesystem. If you've booted into single-us= er > >> > mode, then definitely fsck any partitions before trying to mount the= m. > >> > > > *I guess If I can do fsck without unmount partition I can lost all my d= ata > > isn't it?* >=20 > fsck on an unmounted partition will change on-disk data structures in > ways that the kernel doesn't expect. So, yes, one consequence is that > you can lose or corrupt data. You probably wouldn't lose everything in > the partition -- but you would tend to cause corruption predominantly in > files that are more actively used. >=20 > So don't do that. >=20 > Cheers, >=20 > Matthew >=20 > --=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 >=20 I presume you meant to say "on a mounted partition"...? --=20 =2EO. | Sterling (Chip) Camden | http://camdensoftware.com =2E.O | sterling@camdensoftware.com | http://chipsquips.com OOO | 2048R/D6DBAF91 | http://chipstips.com --LTeJQqWS0MN7I/qa Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iQEcBAEBAgAGBQJOEhutAAoJEIpckszW26+RehkH/1YDRqlox6zSIi4gManxrIWS iWO31i+DPpFIqx2/2F9CZhSQdGMNaabGPYW12An0VVHOK6Vsb5Xq0Kx59ykqFO0c KXDcsOo/FLKbiLB8/7yuO5iHqc7y4voo3UCts+U0nlBE9zhXQLlL6zuxQ3c/HJuH gTiaHVfm+JgXsqLcsfU0M9bldQjH3HFnpqPyjC4tvwxkNpKRBBwmVhgXF3OI6OSe l/dhGNH2lJN0kERmYb/W9/2F4gpxa3I3TJwDzSQwD3BoMQR1qVUT2178O57Jf1GE L1JukF1d9u0owtCnmwZ1LPpaJRESikWoL1+pduBgZR2E7Wrk/vOlNHUGveLwNZs= =+8uz -----END PGP SIGNATURE----- --LTeJQqWS0MN7I/qa--
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