Date: Tue, 10 Aug 2010 14:37:42 +0200 From: Victor Ophof <mr4hughz@hotmail.com> To: <freebsd-questions@freebsd.org> Subject: RE: AHCI driver Message-ID: <SNT142-w18E920D1253EE370CA730B8C950@phx.gbl> In-Reply-To: <4C6139AB.8020306@nagual.nl> References: <4C6139AB.8020306@nagual.nl>
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Its better to enable=2C=20 but AD4 can get renamed to ada0=20 but it's easy to fix (when reboot keep a 2nd computer handy to google the s= olution)=20 you just need to edit the /etc/fstab to point to the newly named drives ..= =20 =20 > Date: Tue=2C 10 Aug 2010 13:36:11 +0200 > From: dick@nagual.nl > To: freebsd-questions@freebsd.org > Subject: AHCI driver >=20 > I'm told it would be better to enable the AHCI driver form my SATA2=20 > drives. It would make ZFS perform better on them. From the release notes= =20 > I get: >=20 > FreeBSD cam(3)=20 > <http://www.FreeBSD.org/cgi/man.cgi?query=3Dcam&sektion=3D3&manpath=3DFre= eBSD+8.1-RELEASE>=20 > SCSI framework has been improved and a new kernel option |option=20 > ATA_CAM| has been added. This turns ata(4)=20 > <http://www.FreeBSD.org/cgi/man.cgi?query=3Data&sektion=3D4&manpath=3DFre= eBSD+8.1-RELEASE>=20 > controller drivers into cam(4)=20 > <http://www.FreeBSD.org/cgi/man.cgi?query=3Dcam&sektion=3D4&manpath=3DFre= eBSD+8.1-RELEASE>=20 > interface modules. When enabled=2C this option deprecates all ata(4)=20 > <http://www.FreeBSD.org/cgi/man.cgi?query=3Data&sektion=3D4&manpath=3DFre= eBSD+8.1-RELEASE>=20 > peripheral drivers and interfaces such as ad and acd=2C and allows cam(4)= =20 > <http://www.FreeBSD.org/cgi/man.cgi?query=3Dcam&sektion=3D4&manpath=3DFre= eBSD+8.1-RELEASE>=20 > drivers ada=2C and cd and interfaces to be natively used instead. Note=20 > that this is not enabled by default in the GENERIC kernel. >=20 > Is it really better to enable AHCI driver? >=20 > Will I be able to GEOM label normal disks (like /dev/ad0) or do I need=20 > /dev/ada0 drives for that? >=20 > Thanks for any help / advice on this matter. I'm building the server and= =20 > want to do things right from the start. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe=2C send any mail to "freebsd-questions-unsubscribe@freebsd= .org" =
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