Date: Mon, 23 Mar 1998 12:46:48 +1030 From: Greg Lehey <grog@lemis.com> To: shimon@simon-shapiro.org Cc: FreeBSD current users <FreeBSD-current@FreeBSD.ORG> Subject: Re: CURRENT Kernel Status Message-ID: <19980323124648.60096@freebie.lemis.com> In-Reply-To: <XFMail.980322180000.shimon@simon-shapiro.org>; from Simon Shapiro on Sun, Mar 22, 1998 at 06:00:00PM -0800 References: <19980322191253.31345@mcs.net> <XFMail.980322180000.shimon@simon-shapiro.org>
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On Sun, 22 March 1998 at 18:00:00 -0800, Simon Shapiro wrote: > > On 23-Mar-98 Karl Denninger wrote: > > ... > >> The equivalent of IBM's jfs fixes that complaint rather thoroughly. >> >> I don't know if you've ever seen one of these come up after a crash, but >> it is rather impressive to see the system roll forward (or back) the >> transactions to the filesystem and come up in seconds - with 100GB+ of >> data online. > > Yup. Seen that. Veritas claims to model that for Unix with a certain > degree of success. > >> The other "cute" thing is that you can extend a jfs volume while >> the system is online; that's a very cute feature. > > Veritas does that too. I belive we may see such functionality for FreeBSD > some day soon. You can extend a vinum volume while it's online. That doesn't extend the file system, of course--that's more likely to be somebody else's project :-) >> jfs is a monstrous pig for some uses however (its allocation size >> is larger than ffs) and for that reason its useless for things like >> news servers - but for regular applications its fantastic. >> >> I hated AIX when I had to work with it, but the one thing you simply >> couldn't argue with was their jfs filesystem. > > I belive allocation resolution to be one of many tunable parameters. It certainly is in Veritas, and that makes sense. Greg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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