Bug 1661813
Summary: | st tape driver broken, writes only NUL instead of real data | ||
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Product: | [Fedora] Fedora | Reporter: | Wolfgang Denk <wd> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | urgent | Docs Contact: | |
Priority: | unspecified | ||
Version: | 29 | CC: | airlied, bskeggs, ewk, hdegoede, ichavero, itamar, jarodwilson, jcline, jglisse, john.j5live, jonathan, josef, kernel-maint, linville, mchehab, mjg59, steved, stevenfalco |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2019-01-10 18:55:04 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Wolfgang Denk
2018-12-23 15:18:18 UTC
To exclude problems with the SAS controller I ran the same tests on a LTO3 tape drive attached to an Adaptec ASC-29320ALP U320 SCSI controller. The problem is the same there. Now for the interesting part: The same tests with the 4.18.18-300.fc29.x86_64 kernel with a LTO4 library attached to a LSI SAS1068E SAS controller work fine. This system is running on a Supermicro motherboard X6DH8-G So I start suspecting the msi Z370 TOMAHAWK mainboard to cause the issues? I don't think it is your mainboard. There was a kernel bug that has been fixed. There is more info here: https://bugzilla.kernel.org/show_bug.cgi?id=201935 (In reply to Steven A. Falco from comment #2) > I don't think it is your mainboard. There was a kernel bug that has been > fixed. There is more info here: > > https://bugzilla.kernel.org/show_bug.cgi?id=201935 Indeed, this would indeed explain what I'm seeing. However, the other, working system is also running the 4.19.10-300.fc29.x86_64 kernel, and it appears to be working fine. This I don't understand, then... Will update the kernel and re-test ASAP. I'll be interested in how it works for you. It definitely fixed the issue for me on an LTO-6 drive. Perhaps it is somehow speed related? I confirm that the problem is fixed in recent kernel version. Tested with 4.19.13-300.fc29.x86_64 - this works without problems. Thanks! Thanks for letting us know. |