Bug 101727
Summary: | (IDE CSB6 IDE_TAPE)Hard lockups on Servers with ServerWorks CSB6 SouthBridge | ||
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Product: | [Retired] Red Hat Linux | Reporter: | Peter Robinson <pbrobinson> |
Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
Status: | CLOSED WORKSFORME | QA Contact: | Brian Brock <bbrock> |
Severity: | high | Docs Contact: | |
Priority: | medium | ||
Version: | 9 | CC: | alan, riel |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i686 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2003-08-12 04:09:52 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Peter Robinson
2003-08-06 09:03:22 UTC
It doesn't explain the crash but Sony I believe recommend the use of the ide-scsi driver for their tapes (and in general we do for the later tape drives). If you use ide-scsi do you see the same problems ? I haven't tried, but will do on Monday when out onsite. It still doesn't explain the crashes on one setup which has IDE disks in RAID 1 config with SCSI Tape drive and the same crashes though. The machine just locks solid with no real output to the screen/logs. Having replaced the ide-tape driver with ide-scsi and used the scsi tape driver the boxes now appear to be much more stable and don't lockup on a backup (at least initially). using the ide-scsi and the st tape driver I still can't use 'mt -f /dev/st0 compression' to enable the hardware compression on the drive which means software compression is the only way to get more than 35Gs on the tape and the cpu increase for the duration of the backup is huge. I take it that this is due to the required interface isn't supported in the ide-scsi driver? Tapes use ATAPI if I remember rightly so ide-scsi should be able to send any command to the drive. Yes all the IDE tape drives I've seen are ATAPI but don't seem to support all the things (such as hardware compression) under Linux. If I run the mt command I get an I/O error (see below) and nothing appears to happen. Whereas the same command with as basically identical SCSI version will just complete as expected. [root@mail root]# mt -f /dev/st0 compression /dev/st0: Input/output error |