Bug 460189 - block layer tagging needs several bug fixes from upstream
Summary: block layer tagging needs several bug fixes from upstream
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Mike Christie
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-08-26 17:36 UTC by Mike Christie
Modified: 2008-10-21 20:40 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-10-21 20:40:39 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Mike Christie 2008-08-26 17:36:53 UTC
Description of problem:

1. When block layer tagging is used by scsi-ml for host wide tagging we do not access the bqt counter under a lock so it is racey and can incorrectly report errors.
2. LLDs are setting the device queue depth to the host wide queue depth.
3. scsi-ml can queue a command with an invalid tag.

These are fixed upstream (#1 is being merged now).


Version-Release number of selected component (if applicable):


How reproducible:


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Comment 1 RHEL Program Management 2008-08-26 17:43:05 UTC
This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".

Comment 3 RHEL Program Management 2008-08-26 18:02:57 UTC
This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".

Comment 4 RHEL Program Management 2008-08-26 18:44:06 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 5 Tom Coughlan 2008-10-20 21:48:18 UTC
Defer to 5.4, due to lack of resources.

Comment 6 Mike Christie 2008-10-21 20:40:39 UTC
I closing this because I thought we could port all the host based tag mapping for fcoe. It turns out all the drivers in RHEL5 did their own mapping, so the port was more invassive than I wanted to risk for just fcoe.


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