Hello, It seems to me that modifying branch permissions (=rw or =ro) can reorder the branches. I think this should not happen. Am I right?
Example commands attached (file log.txt) At line 32, you can see current branch order: /tmp/002=rw /tmp/empty=rw /tmp/001=ro At line 39, remount(mod) is performed, which however reorders branches: mount -o remount,mod:/tmp/empty=ro /tmp/union /tmp/empty=ro /tmp/002=rw /tmp/001=ro Also attached is sample script to reproduce the problem (reproduce.sh) Am I doing anything wrong? Thank you very much Tomas M
+ UNION=/tmp/union + mkdir -p /tmp/empty + mount -t tmpfs tmpfs /tmp/empty + mkdir -p /tmp/union + modprobe aufs + mount -t aufs -o xino=/tmp/empty/xino,br:/tmp/empty=rw aufs /tmp/union + mkdir -p /tmp/001 + mount -o remount,ins:0:/tmp/001=rw /tmp/union + cat /sys/fs/aufs/si_974147a266762f5e/br0 /sys/fs/aufs/si_974147a266762f5e/br1 /sys/fs/aufs/si_974147a266762f5e/xi_path /tmp/001=rw /tmp/empty=rw /tmp/empty/xino --------------------- + mount -o remount,mod:/tmp/empty=ro /tmp/union + cat /sys/fs/aufs/si_974147a266762f5e/br0 /sys/fs/aufs/si_974147a266762f5e/br1 /sys/fs/aufs/si_974147a266762f5e/xi_path /tmp/001=rw /tmp/empty=ro /tmp/empty/xino --------------------- --------------------- + touch /tmp/union/001 + mount -o remount,del:/tmp/empty /tmp/union + mount -o remount,ins:0:/tmp/empty=rw /tmp/union + mount -o remount,mod:/tmp/001=ro /tmp/union + mkdir -p /tmp/002 + mount -o remount,ins:0:/tmp/002=rw /tmp/union + cat /sys/fs/aufs/si_974147a266762f5e/br0 /sys/fs/aufs/si_974147a266762f5e/br1 /sys/fs/aufs/si_974147a266762f5e/br2 /sys/fs/aufs/si_974147a266762f5e/xi_path /tmp/002=rw /tmp/empty=rw /tmp/001=ro /tmp/empty/xino --------------------- + mount -o remount,mod:/tmp/empty=ro /tmp/union mount: warning: /tmp/union seems to be mounted read-only. + cat /sys/fs/aufs/si_974147a266762f5e/br0 /sys/fs/aufs/si_974147a266762f5e/br1 /sys/fs/aufs/si_974147a266762f5e/br2 /sys/fs/aufs/si_974147a266762f5e/xi_path /tmp/empty=ro /tmp/002=rw /tmp/001=ro /tmp/empty/xino + touch /tmp/union/002 touch: cannot touch `/tmp/union/002': Read-only file system
reproduce.sh
Description: Bourne shell script
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