Date: Thu, 4 Nov 1999 13:00:52 -0500 From: Greg Lehey <grog@mojave.sitaranetworks.com> To: Bernd Walter <ticso@cicely.de>, Kelly Yancey <kbyanc@posi.net> Cc: Rodney <rr@xs4all.nl>, freebsd-fs@FreeBSD.ORG Subject: Re: feature list journalled fs Message-ID: <19991104130052.13342@mojave.sitaranetworks.com> In-Reply-To: <19991103105333.A89617@cicely7.cicely.de>; from Bernd Walter on Wed, Nov 03, 1999 at 10:53:33AM %2B0100 References: <19991103005415.A88044@cicely7.cicely.de> <Pine.BSF.4.05.9911021900030.3164-100000@kronos.alcnet.com> <19991103105333.A89617@cicely7.cicely.de>
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On Wednesday, 3 November 1999 at 10:53:33 +0100, Bernd Walter wrote: > On Tue, Nov 02, 1999 at 07:16:55PM -0500, Kelly Yancey wrote: >> On Wed, 3 Nov 1999, Bernd Walter wrote: >> >>> On Tue, Nov 02, 1999 at 12:35:53PM -0500, Greg Lehey wrote: >>>> On Sunday, 31 October 1999 at 12:05:14 +0100, Rodney wrote: >>>>> >>>>> >>>>> hi, >>>>> >>>>> here's my list of features I'd like to see in a >>>>> journalled fs. Have to admit this list is heavily >>>>> inspired ( ok , copied ) from the VxFS features, >>>>> apart from th buzz words, >>>>> some of them make sense, some of them don't >>>>> but it should give us some stuff to discus: >>>>> [snip] >>>>> 6) vinum integration (vague) >>>> >>>> Vinum is just a virtual disk. As such, any file system should work on >>>> it. >>>> >>> It is more than that - it is a volume manager. >>> Maybe you are not clear how far you got beyound the virtual disk. >>> It manages disks and can find it's drive properly if they changed devices - >>> that's working relay fine that I was able to remove nearly all wire >>> configurations for drives and I'm eaven run a volume with only one single >>> drive plex - just to get this feature. >>> It can (or should be able to) resize a volume and should inform the system >>> about. >> >> I am under the impression that you can only enlarge a vinum volume if it >> in a RAID 0 configuration (concatenation). Obviously, it would be very >> difficult to enlarge a RAID 1 or RAID 5 configuration as it would require >> restriping the data across all disks; I'm not familiar with any product, >> hardware or software, that can do this. > > In case of Striping which is valid for Raid5 and concatenated Raid0 configrations > it is not simply possible to do. > But think of a Raid5 volume which is extended with concatenating another Raid5 set. > This is not doable with vinum - but I'm shure that this won't happen before anyone > is using such a feature feature. Well, I'm sure that nobody will use this feature until it's available :-) Yes, I remember you asking for this feature. I suppose I should add it to the wish list (I just forgot to do it). 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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