From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?utf-8?B?SsO2cm4=?= Engel Subject: Re: thin provisioned LUN support & file system allocation policy Date: Fri, 7 Nov 2008 15:45:27 +0100 Message-ID: <20081107144527.GA32092@logfs.org> References: <4913028B.6010405@redhat.com> <1225984628.4703.80.camel@localhost.localdomain> <20081107120534.GO21867@kernel.dk> <49143142.4010809@redhat.com> <20081107121934.GP21867@kernel.dk> <49145029.4040900@redhat.com> <20081107143425.GE15439@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Ric Wheeler , Jens Axboe , Chris Mason , Theodore Tso , Dave Chinner , David Woodhouse , James Bottomley , linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, Black_David@emc.com, "Martin K. Petersen" , Tom Coughlan To: Matthew Wilcox Return-path: Content-Disposition: inline In-Reply-To: <20081107143425.GE15439@parisc-linux.org> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Fri, 7 November 2008 07:34:26 -0700, Matthew Wilcox wrote: >=20 > It's the opposite of a _flash_ friendly policy. But SSDs are not nai= ve > flash implementations -- if you overwrite a block, it'll just write > elsewhere and update its internal mapping of LBAs to sectors. I Note that for many of the *cough* cheaper implementations, "elsewhere" is still very close to the specified address. J=C3=B6rn --=20 When people work hard for you for a pat on the back, you've got to give them that pat. -- Robert Heinlein -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html