Re: RAID5 on FreeBSD 6 or 7
Wojciech Puchar wrote: >> fast, though. See it's page on Wikipedia for more info. I'd use it >> more if it >> was part of official FreeBSD release, but for now it is only available >> as a >> patch (AFAIK). > > which is strange. someone don't like RAID5 to be included in system? I'd like to see graid5 in the base system but I'm also one of those who sort-of held it back from being imported, at least by inaction. The reasons are: a) Last time there was discussion about including it (it's available somewhere in the freebsd-geom list archives) an issue was raised about its over-aggressive use of caching that is turned *on* by default. IIRC it's also likely that the design of the current code doesn't allow turning it off. I suppose this is what makes it fast but the concerns for data stability / corruption are real and not imaginary. b) It was developed by a non-developer. This in itself says nothing about the quality or the lack of quality of the code and is technically irrelevant but there are couple of organizational issues: 1) it needs someone to look after it when it's imported 2) it needs to conform to the style and code layout rules of the project I can't find the patch right now so I can't say for sure what is its state now. I believe that if issues a) and b.2) are solved there would be no problems or objections in importing it. (It could be said that ZFS makes it obsolete, but it's not so - lightweight RAID and file systems will always have their use). signature.asc Description: OpenPGP digital signature
Re: RAID5 on FreeBSD 6 or 7
However, as I said, gvinum is slow. I also run graid5 and some say it is pretty same for me. it works and works fast. but still - small writes WILL be slow as it's RAID5 because of this i don't have much uses for it, as in most cases today drive's capacities are much larger than amount of data that has to be protected. so i use gmirror most often stable. I've been running it for a year on a non-production server and it works for me, but haven't seen it in action, when a drive fails or something. It is simply disconnect one drive to test. fast, though. See it's page on Wikipedia for more info. I'd use it more if it was part of official FreeBSD release, but for now it is only available as a patch (AFAIK). which is strange. someone don't like RAID5 to be included in system? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAID5 on FreeBSD 6 or 7
Hey Peter, > Is it vinum or gvinum (geom8) that is the utility to create a RAID5 volume..? > Things like that gvinum lacks the 'stop' command etc.. makes me think > that it's not production ready or that the source code has not matured enough. actually gvinum is production-ready, it only doesn't implement all the features of vinum. I've been using since 2006 and it works, but it is slow. I just played with it this weekend again, you can check http://nejc.skoberne.net/2008/11/gmirror-and-gvinum-on-the-same-drives/. However, as I said, gvinum is slow. I also run graid5 and some say it is pretty stable. I've been running it for a year on a non-production server and it works for me, but haven't seen it in action, when a drive fails or something. It is fast, though. See it's page on Wikipedia for more info. I'd use it more if it was part of official FreeBSD release, but for now it is only available as a patch (AFAIK). Bye, Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
RAID5 on FreeBSD 6 or 7
Is it vinum or gvinum (geom8) that is the utility to create a RAID5 volume..? Things like that gvinum lacks the 'stop' command etc.. makes me think that it's not production ready or that the source code has not matured enough. /P ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
