From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Correnti Subject: REISER4 corruptions errors Date: Mon, 26 Jan 2004 05:52:18 -0800 (PST) Message-ID: <20040126135218.20053.qmail@web21506.mail.yahoo.com> References: <20040123151214.56545.qmail@web21503.mail.yahoo.com> Mime-Version: 1.0 Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <20040123151214.56545.qmail@web21503.mail.yahoo.com> List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Nikita Danilov Cc: REISER LIST In my last message "REISER4 strange partition size" I wrote: "... making intensive writing test on this reiser4 partition (for example: writing 1 million rows on an Oracle table in archivelog mode) on each test I obtain a corrupted redolog file [sometimes is recoverable, sometimes I've to rebuild the entire DB)." And Nikita answered: "It is not clear how to diagnose this. What oracle are you using? Is it available freely?" Really I think this test is not so easy to prepare (you have to download Oracle, install it and bla bla ...) but I think my last test is more "human". I recomplied Kernel 2.6.0 with CONFIG_REISER4_BADBLOCKS=y I'm using 2.6.0 + 20031223 snapshot because 2.6.1 + 20040119_fixed always gives me some file corrupted and I was spending too much time re-creating Oracle DB. Reiser4 partition is mounted with tmgr.atom_max_age=20 option. I noticed that if you copy a large amount of data (at least 500 Mb) from a partition to a Reiser4 partition, umounting Reiser4 part and using fsck.reiser4 you always obtain from 5 to 40 (and more) fixable corruptions detected. It seems that with 2.6.0 + 20031223 snapshot these corruptions are not so "dangerous" to corrupt files (I mean, also with these corruptions I'm able to work with Oracle). Unfortunately I cannot say the same with 2.6.1 and latest snapshot. Any idea ? All the best Paolo __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/