Red Hat Bugzilla – Bug 167167
megaraid2 kernel panic
Last modified: 2007-11-30 17:07:08 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050524 CentOS/1.0.4-1.4.1.centos3 Firefox/1.0.4
Description of problem:
After running bonnie++ for longer time in loop the kernel starts to report I/O errors on disk or panics.
Version-Release number of selected component (if applicable):
2.4.21-35.EL, 2.4.21-32.0.1.EL and kernel-2.4.21-27.EL
Steps to Reproduce:
1.run bonnie++ and wait for few hours
Actual Results: I/O errors on disk or kernel panic
Expected Results: system should run...
Host, OS info:
Dell PE 2850, 2xXeon, 12GB RAM, 1xPERC 4i/DC (1logical drive raid 10, scsi1, sdb), 1xPERC 4e/DC (1logical drive raid 10, scsi0, sda), 1xQLA2312 (no drives attached, scsi2)
RedHat Enterprise Linux ES 3 U5 x86_64, latest updates
DELL PERC drivers:
Kernel from RHEL ES Beta:
Filesystems: ext3, no sw raid, no lvm
After running 1 or 2 bonnie++ (one on sda, one on sdb) the kernel crashed after few hours of benchmarking in loop
I also tried kernels 2.4.21-35.EL, 2.4.21-32.0.1.EL and kernel-2.4.21-27.EL withe default megaraid2 from RH
Running bonnie++ on RH driver causes scsi I/O errors after some time of test.
It mmight happen that throuput for writing goes down to 100blocks/sec (according to iostat) even if there are many dirty buffers to be written, bonnie than takes more than night to finish. Reading from this disk (dd if=/dev/sda1) at the same time seems to improve write performance again.
Apparently, this was created by mistake (a double entry).
*** This bug has been marked as a duplicate of 167166 ***