Date: Mon, 14 Jul 2003 11:49:14 +0930 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Marc Wiz <marc@wiz.com> Cc: freebsd-questions@freebsd.org Subject: Re: vinum and hot-swapping Message-ID: <20030714021914.GR94666@wantadilla.lemis.com> In-Reply-To: <20030714015746.GE50589@freshaire.wiz.com> References: <200307130245.h6D2j8HB000556@soth.ventu> <20030713191453.GF23909@dan.emsphone.com> <20030714003258.GP94666@wantadilla.lemis.com> <20030714015746.GE50589@freshaire.wiz.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--phbq2bkSb+hZnunM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sunday, 13 July 2003 at 20:57:46 -0500, Marc Wiz wrote: > On Mon, Jul 14, 2003 at 10:02:58AM +0930, Greg 'groggy' Lehey wrote: >>> I don't believe vinum can optimize full-stripe writes, though, since >>> FreeBSD can only do I/O in 64k max chunks, >> >> 128 kB. > > I thought physio was limited to 64 KB? The man page on dump states > this. Please correct me if I am wrong. Physio is limited to MAXPHYS, which you'll find defined in /usr/include/sys/param.h: #ifndef MAXPHYS #define MAXPHYS (128 * 1024) /* max raw I/O transfer size */ #endif I've taken a look at the dump code (yuk!), and it no longer places any limitation on the block size. I'll fix the man page. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply or reply to the original recipients. For more information, see http://www.lemis.com/questions.html See complete headers for address and phone numbers --phbq2bkSb+hZnunM Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.0 (FreeBSD) iD8DBQE/EhMiIubykFB6QiMRAki7AJwJtiYt6+0vlZlYhzF6w6lCegQUOQCfesku HFccKD+lbO+5v7q1Oa6WL2g= =TXdJ -----END PGP SIGNATURE----- --phbq2bkSb+hZnunM--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030714021914.GR94666>