Date: Wed, 10 Feb 1999 17:36:30 -0500 (EST) From: perlsta <bright@cygnus.rush.net> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Matthew Jacob <mjacob@feral.com>, Terry Lambert <tlambert@primenet.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: softupdates Message-ID: <Pine.BSF.3.96.990210173307.10060P-100000@cygnus.rush.net> In-Reply-To: <199902101949.LAA85603@apollo.backplane.com>
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On Wed, 10 Feb 1999, Matthew Dillon wrote: > :I have reported, several times, problems having to do with large > :FFS filesystems, possibly related to softupdates, posibly not, to > :Kirk, Luoqi, etc... Nobody showed any interest in looking at the > :problems - in fact, the email wasn't even answered. > : > :As a consequence, FreeBSD lost out for being considered a candidate > :at NASA/Ames for large mass storage. Shrug...It may or may not be > :true that softupdates, per se, are stable. In my opinion, FFS as > :offered by FreeBSD (and NetBSD) have not shown themselves to be > :adequate to large (>500GB) filesystems. Sad to say, ext2 under > :linux works better. > > Matt, I don't recall seeing anything from you in regards to > large filesystems. Looking in the archives, I see one report > on Jan 27th from you relating to softupdates, but you indicate > that softupdates was not enabled on the volume in question, > so it seems unlikely that it is related to softupdates specifically. > > There have been several reports of dirty-buffer panics which is > of concern, but I haven't been able to reproduce the panic myself > yet. 4.0 has given me some panics on shutdown because it can't sync all buffers, this is usually a result of me using my atapi cdrom both at work and at home. Sometimes as a result of my scsi CD-RW. Sometimes it just shutdown's clean, other times it repeates the last buffer count for a an agonizing 10-20 seconds then shutdowns properly, sometimes it doesn't and just panics after about 30 seconds. I'll break to ddb next time it happensm, right now i have no freebsd access. :/ -Alfred > > -Matt > Matthew Dillon > <dillon@backplane.com> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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