Bug 599739
| Summary: | PG_error bit is never cleared, even when a fresh I/O to the page succeeds [rhel-5.5.z] | ||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | kernel | Assignee: | Jiri Pirko <jpirko> |
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> |
| Severity: | high | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 5.6 | CC: | bdonahue, bmarzins, coughlan, dhoward, djeffery, eguan, jmoyer, jpirko, jwest, lwang, msnitzer, plyons, pm-eus, riel, rkhan, tao |
| Target Milestone: | rc | Keywords: | Reopened, ZStream |
| Target Release: | --- | Flags: | eguan:
needinfo-
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| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
Input/output errors can occur due to temporary failures, such as multipath errors or losing network contact with an iSCSI server. In these cases, virtual memory attempts to retry the readpage() function on the memory page. However, the do_generic_file_read() function did not clear PG_error, which resulted in the system being unable to use the data in the page cache page, even if subsequent readpage() calls succeeded. With this update, the do_generic_file_read() function properly clears PG_error so that the page cache can be utilized in the case of input/output errors.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2010-07-01 18:28:45 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: | 590763 | ||
| Bug Blocks: | |||
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Description
RHEL Program Management
2010-06-03 20:00:45 UTC
in 2.6.18-194.6.1.el5 Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: Input/output errors can occur due to temporary failures, such as multipath errors or losing network contact with an iSCSI server. In these cases, virtual memory attempts to retry the readpage() function on the memory page. However, the do_generic_file_read() function did not clear PG_error, which resulted in the system being unable to use the data in the page cache page, even if subsequent readpage() calls succeeded. With this update, the do_generic_file_read() function properly clears PG_error so that the page cache can be utilized in the case of input/output errors. 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 therefore 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-2010-0504.html |