Date: Sun, 22 Mar 1998 19:55:57 -0600 From: Karl Denninger <karl@mcs.net> To: shimon@simon-shapiro.org Cc: Terry Lambert <tlambert@primenet.com>, dyson@FreeBSD.ORG, root@danberlin.resnet.rochester.edu, current@FreeBSD.ORG Subject: Re: CURRENT Kernel Status Message-ID: <19980322195557.03039@mcs.net> 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, Mar 22, 1998 at 06:00:00PM -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. > > > 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. Maybe it is now - I was using it back in the 3.0/3.1 days (~4 years ago+) and it wasn't rational to use it for the "gazillions of small files" case then. -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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