https://bugzilla.novell.com/show_bug.cgi?id=463829 User teheo@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=463829#c50 Tejun Heo <teheo@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO Info Provider| |pgnet.trash@gmail.com --- Comment #50 from Tejun Heo <teheo@novell.com> 2009-02-10 18:16:46 MST --- Eh.. let's please leave out lvm, md or filesystem for now. They just add to complexity and if you keep the filesystem mounted over tests, it doesn't mean much because the system caches file contents in memory. Please do the followings. 1. Boot kernel to test. No fstab entry or raid array. 2. dd if=TESTSOURCEFILE of=TESTTMPFILE bs=1M count=512 # change count as necessary 3. sha1sum TESTTMPFILE 4. dd if=TESTTMPFILE of=/dev/sdX bs=1M count=512 5. for ((i=0;i<3;i++)); do dd if=/dev/sdX of=TESTOUT bs=1M count=512; sha1sum TESTOUT; done Please make sure the device to test is not used by any FS before doing the test. The above test sequence will flush all the caches after each dd as they'll be the last users. Thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.