Date: Sun, 21 Jan 2007 23:12:13 -0800 (PST) From: Shane Adams <adamsch1@yahoo.com> To: Eric Anderson <anderson@centtech.com>, Soeren Straarup <xride@x12.dk> Cc: freebsd-geom@freebsd.org Subject: Re: A beginner project Message-ID: <751291.8910.qm@web31814.mail.mud.yahoo.com>
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I've thought about geom snapshots, which I take it you would do at a block = layer similarly to how snapshots are implemented in FFS. I couldnt figure = out a way to do it effeciently. I've found the FFS snapshots do not work w= ell with large disk sets, there is a noticable lag and almost a freeze-up o= n my computer. =0A=0ASeems you'd need to do it at the filesystem layer, an= d as a side effect change the format of inodes at cylinder groups in order = to track changes.=0A=0AIs there any publish literature on the subject?=0A= =0AOh - by snapshot I mean something that can be mounted simlultaniously wi= th the original filesystem.=0A=0ACheers,=0A Shane=0A=0A=0A=0A=0A----- Orig= inal Message ----=0AFrom: Eric Anderson <anderson@centtech.com>=0ATo: Soere= n Straarup <xride@x12.dk>=0ACc: freebsd-geom@freebsd.org=0ASent: Sunday, Ja= nuary 21, 2007 10:16:22 PM=0ASubject: Re: A beginner project=0A=0AOn 01/20/= 07 01:31, Soeren Straarup wrote:=0A> What would be a beignner project withi= n geom?=0A> =0A> Something is acutally going to be used by atleat some.=0A>= =0A> I have briefly looked at:=0A> http://www.freebsd.org/projects/ideas/#= p-psched=0A> =0A> But are there already someone out there that is working o= n it?=0A> =0A> /Soeren=0A> =0A=0AMake a 'geom taste' function?=0A=0AOther i= deas:=0A- geom snapshots (harder!)=0A- gnop additional options (add latency= , etc, to mimic real devices)=0A=0A=0AEric=0A=0A=0A=0A-- =0A---------------= ---------------------------------------------------------=0AEric Anderson = Sr. Systems Administrator Centaur Technology=0AAn undefined pr= oblem has an infinite number of solutions.=0A------------------------------= ------------------------------------------=0A______________________________= _________________=0Afreebsd-geom@freebsd.org mailing list=0Ahttp://lists.fr= eebsd.org/mailman/listinfo/freebsd-geom=0ATo unsubscribe, send any mail to = "freebsd-geom-unsubscribe@freebsd.org"=0A=0A=0A
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