Date: Fri, 17 Sep 2004 10:15:03 -0700 From: Brooks Davis <brooks@one-eyed-alien.net> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: Ceri Davies <ceri@submonkey.net> Subject: Re: cvs commit: src/sys/sys mdioctl.h src/sys/dev/md md.c src/sbin/mdconfig Makefile mdconfig.8 mdconfig.c Message-ID: <20040917171503.GB10367@odin.ac.hmc.edu> In-Reply-To: <20040917170302.GT30151@darkness.comp.waw.pl> References: <98480.1095438391@critter.freebsd.dk> <414B10FB.9030003@samsco.org> <20040917170302.GT30151@darkness.comp.waw.pl>
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--Bn2rw/3z4jIqBvZU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Sep 17, 2004 at 07:03:02PM +0200, Pawel Jakub Dawidek wrote: > On Fri, Sep 17, 2004 at 10:29:47AM -0600, Scott Long wrote: > +> >Uhm, be aware that we are limited also to the size of individual > +> >swap disks. 31 bits of bytes/sectors/pages, not quite sure which. > +> > > +>=20 > +> 32 bits of pages, unless there is somewhere in the chain that the=20 > +> unsigned nature of the word is not being honored. >=20 > Pages. It gives as maximum swap-backed device of 16TB. I tested it with > ~15TB devices, so there is no signed/unsigned problem (which will limit > us to 8TB). Of course you can always (I hope) increase page size:) Given my quick read of the sunlabel format, there would be some value in >16TB (17 would be sufficent) virtual disks. Can we do a RAID0 of these to get something that big? I'm pretty sure sunlabel is limited to 14TB or 16TB so having something too big would be good for testing. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --Bn2rw/3z4jIqBvZU Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFBSxuXXY6L6fI4GtQRAjx3AJ9Hdn5OMMjBsNj/4Qk2Ggu0q4wLIACgqhhZ f5iHwPOWvkG4/C4GN9Nx8l8= =e5jU -----END PGP SIGNATURE----- --Bn2rw/3z4jIqBvZU--
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