Date: Mon, 01 Dec 2008 20:34:20 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-questions@freebsd.org Subject: Re: RAID5 on FreeBSD 6 or 7 Message-ID: <gh1e7v$kus$1@ger.gmane.org> In-Reply-To: <20081201191042.N10784@wojtek.tensor.gdynia.pl> References: <200812011645.mB1GjBWj016342@brother.ludd.ltu.se> <49342833.4070904@skoberne.net> <20081201191042.N10784@wojtek.tensor.gdynia.pl>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig73C123867557D65789C4CEF0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 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). >=20 > 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). --------------enig73C123867557D65789C4CEF0 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkk0PDwACgkQldnAQVacBcgMKgCbBIK+soBD748ohlElhMR4Oqwh 6xcAnj2qcediqz7rBndXZ9TLLYnhoUDR =zHLz -----END PGP SIGNATURE----- --------------enig73C123867557D65789C4CEF0--
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