Date: Fri, 5 Nov 1999 17:31:07 -0500 From: Greg Lehey <grog@mojave.sitaranetworks.com> To: Bernd Walter <ticso@cicely.de> Cc: Mattias Pantzare <pantzer@ludd.luth.se>, freebsd-fs@FreeBSD.ORG Subject: Re: Extending RAID-5 plexes (was: feature list journalled fs) Message-ID: <19991105173107.38019@mojave.sitaranetworks.com> In-Reply-To: <19991105231302.A2771@cicely7.cicely.de>; from Bernd Walter on Fri, Nov 05, 1999 at 11:13:02PM %2B0100 References: <grog@mojave.sitaranetworks.com> <199911052142.WAA02426@zed.ludd.luth.se> <19991105165042.50293@mojave.sitaranetworks.com> <19991105231302.A2771@cicely7.cicely.de>
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On Friday, 5 November 1999 at 23:13:02 +0100, Bernd Walter wrote: > On Fri, Nov 05, 1999 at 04:50:42PM -0500, Greg Lehey wrote: >> On Friday, 5 November 1999 at 22:42:49 +0100, Mattias Pantzare wrote: >> >>> To get to know vinum I tried to use it on devices made with >>> vnconfig. Should I debug the panic I got or will it just not work? >> >> I don't know of any a priori reason why it shouldn't work. If you >> send me a stack trace, I should be able to help. Note the >> instructions in vinum(4). > > vn devices are file based. > I prety shure that it's strategy function can't be called in interrupt context > as happens in Raid5 cases. > vn calls VOP_READ and VOP_WRITE directly from strategy without a queue like > real disk drivers do. Yes, that's reasonable. I'd still like to see a trace. We could acommodate vnodes by getting the daemon to complete things. That would make access still slower, and I can't really see a good reason for it, but it's possible. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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