<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"> <title></title> </head> <body> Hi I am back ... with more questions. I am currently running oracle 9205 with patches 3016968 (async io fix) & 2448994_9205 (direct io fix). All my data files are residing on an ext3 file system. /dev/tpccvg/tpcc_disks on /tpcc_disks type ext3 (rw) /dev/tpccvg/log1_1 on /log1_1 type ext3 (rw) /dev/tpccvg/log2_1 on /log2_1 type ext3 (rw) /dev/tpccvg/log3_1 on /log3_1 type ext3 (rw) /dev/tpccvg/log4_1 on /log4_1 type ext3 (rw) /dev/tpccvg/log5_1 on /log5_1 type ext3 (rw) /dev/tpccvg/log6_1 on /log6_1 type ext3 (rw) /dev/tpccvg/log7_1 on /log7_1 type ext3 (rw) /dev/tpccvg/log8_1 on /log8_1 type ext3 (rw) Whenever I tried to start up oracle with 'filesystemio_options=directio', it failed to mount the dbase due to problem writing to the control file: LCK0 started with pid=16 Wed Jul 14 13:12:57 2004 ORA-00204: error in reading (block 1, # blocks 1) of controlfile ORA-00202: controlfile: '/tpcc_disks/control_001' ORA-27091: skgfqio: unable to queue I/O ORA-27072: skgfdisp: I/O error Linux Error: 22: Invalid argument Additional information: 1 if I do a trace on the process, it shown that oracle is doing the correct things by open the file with O_DIRECT flag: 5997 <... rt_sigprocmask resumed> NULL, 8) = 0 5990 open("/tpcc_disks/control_001", O_RDONLY|O_DIRECT|O_LARGEFILE <unfinished ...> 5997 semop(3342337, 0xbfff5108, 1 <unfinished ...> is there any thing that I need to do for ext3 in order for O_DIRECT to work??? Am I missing some library files on the OS kernel level? MAny thanks in advance for your time. Regards, David Stephen C. Tweedie wrote: <blockquote type="cite" cite="mid1089386679.2856.84.camel@sisko.scot.redhat.com"> <pre wrap="">Hi, On Fri, 2004-07-09 at 13:22, Marc-Christian Petersen wrote: </pre> <blockquote type="cite"> <pre wrap="">ext3 supports direct i/o, but not in 2.4 mainline. It was added in 2.6. </pre> </blockquote> <pre wrap=""> </pre> <blockquote type="cite"> <blockquote type="cite"> <pre wrap="">my system is running : Red Hat Enterprise Linux AS release 3 (Taroon Update 2) Kernel 2.4.21-15.ELsmp on an i686 </pre> </blockquote> <pre wrap="">2.4-aa, 2.4-suse, 2.4-wolk tree and some others have it, 2.4-rh kernels do not have it. </pre> </blockquote> <pre wrap=""> 2.4 RHL kernels did not; RHEL 3 does, so 2.4.21-15.EL will have it. --Stephen _______________________________________________ Ext3-users mailing list <a class="moz-txt-link-abbreviated" href="mailto:Ext3-users@redhat.com">Ext3-users@redhat.com</a> <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/ext3-users">https://www.redhat.com/mailman/listinfo/ext3-users</a> </pre> </blockquote> </body> </html>