Bug 173158
| Summary: | kernel dm-log: Make mirror log arch-independent | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 4 | Reporter: | Alasdair Kergon <agk> |
| Component: | kernel | Assignee: | Alasdair Kergon <agk> |
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4.0 | CC: | ccaulfie, jbaron |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHSA-2006-0132 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-03-07 20:44:11 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: | |||
| Bug Depends On: | |||
| Bug Blocks: | 168429 | ||
dm-log-bitset-fix-endian.patch An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2006-0132.html |
The format of the on-disk mirror logs is currently architecture-dependent. The following patch changes the code to use the same set_le_bit and test_le_bit functions as ext2 uses. That makes the BE machines keep the bitmap internally in LE order. It does mean you can't use any other type of operations on the bitmap words but that is OK in this instance. The nice thing about this way is that there is no on-disk format change for 32bit LE boxes at least, and even nicer is that it removes code and data structures because log->disk_bits disappears. From: Patrick Caulfield <pcaulfie>