From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: ssd optimised mode Date: Mon, 23 Feb 2009 12:23:29 -0500 Message-ID: References: <934e480c0902200326m7647d87cq28bfa1675ef012f4@mail.gmail.com> <3a7f57190902221706l34e8f925m9ef687c1df920123@mail.gmail.com> <200902231648.55563.ctpm@ist.utl.pt> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Martin K. Petersen" , Dmitri Nikulin , linux-btrfs@vger.kernel.org To: Claudio Martins Return-path: In-Reply-To: <200902231648.55563.ctpm@ist.utl.pt> (Claudio Martins's message of "Mon\, 23 Feb 2009 16\:48\:55 +0000") List-ID: >>>>> "Claudio" == Claudio Martins writes: Claudio> What brand of SSDs are we talking about? I tested two different products that both exhibited poor behavior during frequent resets/power cycles. I can't really disclose details but rest assured I'm working with the vendors in question to get this fixed. Just last Friday I received a couple of updated drives that appear to work correctly. But I haven't tested them extensively yet. Claudio> What filesystems did you experiment with? Some tests were done with ext3 but most tests were done using my own integrity checking tooling and/or dt. In the filesystem case it was trivial to map out the affected files in debugfs and correlate those to a logical region on the disk. -- Martin K. Petersen Oracle Linux Engineering