From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: Fibration questions Date: Thu, 22 Jul 2004 11:14:21 -0700 Message-ID: <410003FD.9000500@namesys.com> References: <40FE0B47.3010600@slaphack.com> <20040721063607.1A09015C92@mail03.powweb.com> <20040721083232.GA4990@nysv.org> <40FF3DAD.6020100@slaphack.com> <20040722100657.GC4990@nysv.org> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <20040722100657.GC4990@nysv.org> List-Id: Content-Type: text/plain; charset="iso-8859-1"; format="flowed" To: =?ISO-8859-1?Q?Markus_T=F6rnqvist?= Cc: David Masover , David Dabbs , reiserfs-list@namesys.com Markus T=F6rnqvist wrote: >On Wed, Jul 21, 2004 at 11:08:13PM -0500, David Masover wrote: > =20 > >>- have our own area inside 'metas' which is always local, to allow >>things like forcing particular files to always be in the cache >> =20 >> Is this the sticky bit or new? > >Hmm. This is interesting. Difficult to wrap my brain around it, though :)) >Is it a bit like what I've understoon union mounts to be? >Where would this data be stored, if it's in metas? Stat data on the >local partition that's not bound to a specific file? Wouldn't fsck >now fix that as a broken fs?-) > > =20 > >>First question: Can I manually enable/disable a particular plugin for a >>particular directory? (like how cryptocompress is supposed to be...) >> =20 >> > >Sure, but for example with fibration you can't re-fibrate a directory. >You have to move the stuff out and back in after you've changed the >policy. > >With tail policies you must access the file in order to get it moved >out of tails, if you change the formatting to never. > >The Namesys Guys may want to correct me on those above notions, if >they're totally wrong. > =20 > Some plugins are mutable, some are not, and some are mutable when empty=20 or some other condition applies. We should document it for all of them.=20