Date: Tue, 21 Jun 2011 12:16:26 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: freebsd-stable@freebsd.org Cc: freebsd-fs@freebsd.org, mav@freebsd.org Subject: Re: MFC: graid(8) (RAID GEOM) support Message-ID: <20110621191626.GA99204@icarus.home.lan> In-Reply-To: <20110618005124.GA43568@icarus.home.lan> References: <20110618005124.GA43568@icarus.home.lan>
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On Fri, Jun 17, 2011 at 05:51:24PM -0700, Jeremy Chadwick wrote: > Sorry for the cross-post, but I thought both lists would want to know > about this. > > Looks like mav@ just committed this ~17 hours ago: > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/geom/raid/g_raid.c > > Those who have historically wanted to use Intel MatrixRAID (now called > Intel RST (Rapid Storage Technology)), but haven't due to the severe > issues/risks with ataraid(4), will probably be very interested in > this commit. I know I am! > > I plan on stress-testing the Intel support on a 2-disk system with > RAID-1 enabled, and will document my experiences, procedures, etc... > > Thanks, mav@ and imp@ ! > > I'll be sending another mail momentarily asking about USB memory stick > image building, since to accomplish the above, I want to do a > "bare-bones" install on our test system (e.g. enable Intel RAID, set up > 2 disks in a RAID-1 mirror, boot a USB memory stick that contains this > latest RELENG_8 build, and do sysinstall, etc.. the normal way). > > > ===================================================================== > MFC r219974, r220209, r220210, r220790: > Add new RAID GEOM class, that is going to replace ataraid(4) in supporting > various BIOS-based software RAIDs. Unlike ataraid(4) this implementation > does not depend on legacy ata(4) subsystem and can be used with any disk > drivers, including new CAM-based ones (ahci(4), siis(4), mvs(4), ata(4) > with `options ATA_CAM`). To make code more readable and extensible, this > implementation follows modular design, including core part and two sets > of modules, implementing support for different metadata formats and RAID > levels. > > Support for such popular metadata formats is now implemented: > Intel, JMicron, NVIDIA, Promise (also used by AMD/ATI) and SiliconImage. > > Such RAID levels are now supported: > RAID0, RAID1, RAID1E, RAID10, SINGLE, CONCAT. > > For all of these RAID levels and metadata formats this class supports > full cycle of volume operations: reading, writing, creation, deletion, > disk removal and insertion, rebuilding, dirty shutdown detection > and resynchronization, bad sector recovery, faulty disks tracking, > hot-spare disks. For Intel and Promise formats there is support multiple > volumes per disk set. > > Look graid(8) manual page for additional details. > > Co-authored by: imp > Sponsored by: Cisco Systems, Inc. and iXsystems, Inc. > ===================================================================== By the way, it doesn't look like the graid(8) man page is being brought in to the base system on either of the two RELENG_8 systems I've rebuilt in the past few days. I'm thinking /usr/src/sbin/geom/class/raid/graid.8 isn't being noticed as a man page. /usr/src/sbin/geom/class/raid/Makefile doesn't have MAN8=graid.8 in it, is that the problem? -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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