Date: Mon, 17 May 1999 09:49:39 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Archie Cobbs <archie@whistle.com> Cc: Alex Le Heux <alexlh@funk.org>, freebsd-hackers@FreeBSD.ORG Subject: Re: fsck and large file system Message-ID: <Pine.BSF.3.95.990517094732.18620C-100000@current1.whistle.com> In-Reply-To: <199905162317.QAA75741@bubba.whistle.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, 16 May 1999, Archie Cobbs wrote: > Alex Le Heux writes: > > Maybe I'm completely wrong here, but didn't I read somewhere that with > > softupdates it would theoretically be possible to boot the system before > > the fsck and fsck while it's running? > > Yes.. if you make the assumptions that: > > 1. There are no bugs in the soft updates code > 2. Your disk always writes its blocks atomically > > Then it follows that the only disk inconsistencies that are possible > during any boot-up are minor ones (eg, bitmap entry showing an allocated > block that's not pointed to by anything) that can be fixed by a background > daemon running at its leisure. As a consequence of doing this, your may > have free, but temporarily unavailable, disk blocks for a while until > the daemon finishes. > > Julian et.al. can correct me if I've left something out.. that's the theory... It's possibel to reboot, not fsck and just live with the 'unfree' resources till you have time to reboot and do an fdsck at a later time.. (the run-time fsck is extermely tricky as evidenced by the fact that Kirk has not yet been able to quite work out how to do it). > > -Archie > > ___________________________________________________________________________ > Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.95.990517094732.18620C-100000>