Date: Mon, 31 Mar 2008 21:55:15 -0700 From: "Martin Fouts" <mfouts@danger.com> To: "Bakul Shah" <bakul@bitblocks.com>, "Poul-Henning Kamp" <phk@phk.freebsd.dk> Cc: Christopher Arnold <chris@arnold.se>, arch@freebsd.org, qpadla@gmail.com, freebsd-arch@freebsd.org Subject: RE: Flash disks and FFS layout heuristics Message-ID: <B95CEC1093787C4DB3655EF330984818051D0E@EXCHANGE.danger.com> In-Reply-To: <20080331223846.CFD975BAE@mail.bitblocks.com> References: Your message of "Mon, 31 Mar 2008 22:23:37 -0000." <26080.1207002217@critter.freebsd.dk> <20080331223846.CFD975BAE@mail.bitblocks.com>
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=20 > -----Original Message----- > From: Bakul Shah [mailto:bakul@bitblocks.com]=20 > Sent: Monday, March 31, 2008 3:39 PM > To: Poul-Henning Kamp > Cc: Matthew Dillon; Christopher Arnold; arch@freebsd.org;=20 > qpadla@gmail.com; freebsd-arch@freebsd.org; Martin Fouts > Subject: Re: Flash disks and FFS layout heuristics=20 > One thing I forgot to add: I'd let the lower level handle bad=20 > block forwarding and wear levelling (like on the m-tron device). >=20 One of the difficulties of doing things this way comes from the complexity of dealing with garbage collection when you want to reuse an erase unit.
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