Attachment 18117 Details for Bug 12806 – MRE (minimal reproducible example) as bash script to reproduce the bug

MRE (minimal reproducible example) as bash script to reproduce the bug

setup.txt (text/plain), 1.58 KB, created by Aryo Da on 2023-09-21 23:47:52 UTC

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Creator: Aryo Da

Created: 2023-09-21 23:47:52 UTC

Size: 1.58 KB

patch

obsolete

>#!/bin/bash
>clear
>echo
>echo "Minimal reproducible example (MRE)"
>echo "----------------------------------"
>echo
>echo "Tested with"
>echo "- rsync  version 3.2.7  protocol version 31"
>echo "- ext4 file system"
>echo
>rm -rf MRE
>mkdir MRE
>cd MRE
>mkdir source
>touch source/read_only.txt
>chmod 444 source/read_only.txt
>
>mkdir snapshot1
># rsync --recursive --times --devices --specials --hard-links --human-readable -s --links --perms --executability --group --owner source/* snapshot1/
>rsync --perms --executability --group --owner source/* snapshot1/
>
>mkdir snapshot2
># rsync --recursive --times --devices --specials --hard-links --human-readable -s --links --perms --executability --group --owner --link-dest=../snapshot1 source/* snapshot2/
>rsync --perms --executability --group --owner --link-dest=../snapshot1 source/* snapshot2/
># stat snapshot1/read_only.txt 
>echo "File stats BEFORE rsync --delete":
>echo
>stat snapshot2/read_only.txt
>
>mkdir empty
># delete snapshot1 using an empty source directory (shall be the fastest way to delete a subdir)
># --debug=ALL
>rsync -a --delete -s empty/ snapshot1/
># rm -f snapshot1/  # works as expected (unlink does neither change 'Changed' time nor file permissions)
># strace -c rm -rf snapshot1
>echo
>stat snapshot2/read_only.txt
>
>echo
>echo "Results (after deleting snapshot1 via rsync --delete):"
>echo "1. The 'Change' time of the hardlinked file was updated"
>echo "2. The hardlinked file has now different access rights (644 instead of 444 so it is writable again!)"
>echo "This does NOT happen if 'rm -f snapshot1/' is used!"
>echo
>
>echo "Files in snapshot2:"
>ls -l snapshot2
>

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Attachments on bug 12806: 13239 | 18117