Bug 1060925
| Summary: | dmesg -w output not line-buffered | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Sami Farin <hvtaifwkbgefbaei> | ||||
| Component: | util-linux | Assignee: | Karel Zak <kzak> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 20 | CC: | jonathan, kzak, mluscon | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | |||||||
| : | 1067354 (view as bug list) | Environment: | |||||
| Last Closed: | 2014-10-24 14:16:35 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: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1067354 | ||||||
| Attachments: |
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Fixed by upstream commit 3938c08cd56a7c83ea387073c1404d0e864c9fa3, Fedora package will be updated ASAP. Thanks! Fixed in v2.25 (f21) |
Created attachment 858876 [details] util-linux-2.24-dmesg-follow-linebuf.patch Description of problem: when writing to e.g. a pipe, output from dmesg -w can come many minutes late due to buffering. Version-Release number of selected component (if applicable): 2.24-2 How reproducible: 100% Steps to Reproduce: 1. dmesg -w|cat 2. 3. Actual results: "follow" feature does not behave like "tail -f" as expected. dmesg write()s in about 4096 byte blocks. Expected results: line-buffered output Additional info: