Bug 1254537
| Summary: | [RFE] support for cpio --reproducible | |||
|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Giuseppe Scrivano <gscrivan> | |
| Component: | cpio | Assignee: | Pavel Raiskup <praiskup> | |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | |
| Severity: | unspecified | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | rawhide | CC: | kdudka, ovasik, praiskup | |
| Target Milestone: | --- | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Bug Fix | ||
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1386662 (view as bug list) | Environment: | ||
| Last Closed: | 2015-09-14 12:03:50 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: | 1386662 | |||
It is 5 years since the cpio-2.11 was released. I think it would be better to ask upstream to release cpio-2.12 - this might be good excuse for it. Backport is of course doable (although almost all hunks fail when applying directly) - but there are more useful commits in cpio upstream in the last 5 years (and we backported just a few). Pavel, will you ask Sergey there? Good idea. I have sent some patches to bug-cpio (still didn't appear in the archives) to get the latest version built on Fedora 22 and get "make check" to pass. now they are on the archives: https://lists.gnu.org/archive/html/bug-cpio/2015-08/msg00000.html cpio 2.12 that was released on the 12th of September contains --reproducible: http://lists.gnu.org/archive/html/bug-cpio/2015-09/msg00004.html |
Description of problem: The OSTree system uses content-addressed storage, and when initramfs images generated by dracut are in the tree, because the cpio format contains modification and it causes a different checksum every time it's created, so causing the download of the initrd even if not changed from last time. Dracut has already support for --reproducible and it is used whenever it is supported by cpio. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. cpio --help | grep reproducible Actual results: no support for --reproducible Expected results: --reproducible is supported Additional info: The backport of the upstream patch: commit 3945f9db44c935608caa5f084fd7f67ae59ee9e1 Author: Sergey Poznyakoff <gray.ua> Date: Mon Dec 1 15:02:38 2014 +0200 New options to create device and inode-independent archives. * src/util.c (inode_val): New member trans_inode (find_inode_val): New function. (find_inode_file): Rewrite using the above. (add_inode): Initialize the trans_inode member depending on the value of renumber_inodes_option. (get_inode_and_dev): New function. (stat_to_cpio): Use get_inode_and_dev. (arf_stores_inode_p): New function. * src/extern.h (renumber_inodes_option) (ignore_devno_option): New externs. * src/global.c (renumber_inodes_option) (ignore_devno_option): New variables. * src/main.c: Add new options. * NEWS: Document changes. * doc/cpio.1: Document new options. * doc/cpio.texi: Likewise. is required