Bug 1827764
| Summary: | The documentation (in help and man page) for logical threads is incorrect | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Andy Walsh <awalsh> |
| Component: | vdo | Assignee: | corwin <corwin> |
| Status: | CLOSED ERRATA | QA Contact: | Filip Suba <fsuba> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 8.3 | CC: | awalsh |
| Target Milestone: | rc | Flags: | pm-rhel:
mirror+
|
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | 6.2.3.91 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-11-04 02:01:47 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: | |||
Verified with vdo-6.2.3.114-14.el8.
--vdoLogicalThreads <threadCount>
Specifies the number of threads across which to
subdivide parts of the VDO processing based on the
logical address. The value must be at least 0 and less
than or equal to 60.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (kmod-kvdo bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:4551 |
Description of problem: The current description of logical threads is not accurately describing the implementation. Work is based on logical address, not hash. Version-Release number of selected component (if applicable): 6.2.2.117 How reproducible: 100% Actual results: VDO Man page: processing based on the hash value computed from the block data. The value must be at least \*[logicalThreadsMin] and less than or equal to \*[logicalThreadsMax]. A logical thread count of \*[logicalThreadsBlockMapCacheSizeThreshold] or more will require explicitly specifying a sufficiently large block map cache size, as well. vdo --help output: VDO processing based on the hash value computed from the block data. The value must be at least {min} and less than or equal to {max}. A logical thread count of {threshold} or more will require explicitly specifying a sufficiently large block map cache size, as well. Expected results: VDO Man page: processing based on the logical address. The value must be at least \*[logicalThreadsMin] and less than or equal to \*[logicalThreadsMax]. A logical thread count of \*[logicalThreadsBlockMapCacheSizeThreshold] or more will require explicitly specifying a sufficiently large block map cache size. vdo --help output: VDO processing based on the logical address. The value must be at least {min} and less than or equal to {max}. A logical thread count of {threshold} or more will require explicitly specifying a sufficiently large block map cache size. Additional info: