From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Zarochentsev Subject: Re: / is no longer Reiser4 :( Date: Mon, 21 Nov 2005 22:15:46 +0300 Message-ID: <200511212215.47467.zam@namesys.com> References: <200511191515.48570.jgilmore@glycou.com> <43820A99.2090704@namesys.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <43820A99.2090704@namesys.com> Content-Disposition: inline List-Id: Content-Type: text/plain; charset="us-ascii" To: Hans Reiser Cc: John Gilmore , reiserfs-list@namesys.com Hi On Monday 21 November 2005 20:57, Hans Reiser wrote: > zam, please look into this. > > Hans > > John Gilmore wrote: > >Following Han's comment about the deliterious effects of 6% fragmentation, > > I attempted a manual defrag of my hard disk. > > > >While restoring the .tar file, I had nothing better to do than watch it. > > And a good thing too! It got a recurring oops. about every other minute > > or so, it would stop with a long kernel message than mostly scrolled off > > of the screen... I thought those where supposed to show up in a log files > > somewhere if possible, but I can't find it. And it should have been > > possible, as the computer continued to run just fine. > > > >These oopses caused some sort of data corruption - root wouldn't boot one bug responsible for fs corruption was fixed recently. the fix is in 2.6.14-mm2 already. > > properly afterwards. So I reformated as ext3 and untarred my root again. > > That worked fine, so I know it wasn't corruption of the tar file. > > > >I took a photograph, and I'll try to type in some of it. Just looking at > > the names of the procudures, it looks like memory pressure made reiser4 > > flush, and then some of the lower level functions tried to allocate > > memory and failed. But since I don't have the top of the oops message, I > > can't tell. > > > >Wait - I could've stopped the scrolling with ^S, scrolled back with > > ^pageup, and photoed the whole thing! Aaaargghh.... > > > >Well, I'm not redoing it right now, I need to be getting to bed. > > > >I may try it again later - but then maybe I'll update to 2.6.14-mm2 with > > patch from namesys first... > > > >Here's the (tail end of the) oops message, sans addresses and offsets > > because I'm feeling lazy and I'm in a hurry: > > > >mempool_alloc+0x3a/0xe0 > >__split_bio+0x128/0x190 > >in_drive_list > >dm_request > >generic_make_request > >submit_bio > >do_IRQ > >reiser4_clear_page_dirty > >write_jnodes_to_disk_extent > >write_jnode_list > >write_fq > >flush_current_atom > >flush_some_atom > >writeout > >reiser4_sync_inodes > >writeback_inodes > >background_writeout > >pdflush > >__pdflush > >pdflush > >background_writeout > >kthread > >kthread > >kernel_thread_helper -- Alex.