T o n g:
> >> mount -t aufs -o br:./rw:./ro2=wh:./ro1 none ./u
> >
> > I am afraid this branch permission "=wh" returned an error. Did it
> > really succeed?
>
> It seems to be OK at my side. Here is the full log around the point that
> I did it:
You are right.
I forgot that "every unknown permission will be treated as =ro".
If you read /sys/fs/aufs/si_*/br*, then it would show you "/.../ro2=ro"
instead of "...=wh" or "...=ro+wh".
> But could you double check if the 2nd invocation of 'aubrsync _move'
> doesn't affect old history at your side please? I was hoping that giving
> my work history would make your life a bit easier than re-creating/
> retyping on your own. Anyway...
Here is a simple script and the result.
Is this behaviour what you want?
J. R. Okajima
----------------------------------------------------------------------
#!/bin/sh
set -eu
. /etc/default/aufs
cd /tmp
rm -fr u rw ro_mid ro_bot
mkdir u rw ro_mid ro_bot
cd ro_mid
mkdir d1 d2
cd d1
> ${AUFS_WH_PFX}2
ln ${AUFS_WH_PFX}2 ${AUFS_WH_PFX}3
ln ${AUFS_WH_PFX}2 ${AUFS_WH_PFX}4
> four
cd ../d2
seq 6 | while read i; do > $i; done
cd ../../ro_bot
mkdir d1
cd d1
seq 9 | while read i; do > $i; done
cd ../..
set -x
sudo mount -t aufs -o br:rw:ro_mid=ro+wh:ro_bot none u
ls u/d?
rm u/d1/[67]
sudo mount -o remount,ro,shwh u
sudo find rw ro_mid
sudo aubrsync _move u rw ro_bot \
"--remove-source-files \
--exclude=$AUFS_WH_BASE --exclude=$AUFS_WH_PLINKDIR
--exclude=$AUFS_WH_ORPHDIR \
--max-delete=0 \
rw/ ro_mid" || :
sudo find rw ro_mid
sudo umount u
----------------------------------------------------------------------
+ sudo mount -t aufs -o br:rw:ro_mid=ro+wh:ro_bot none u
+ ls u/d1 u/d2
u/d1:
1 5 6 7 8 9 four
u/d2:
1 2 3 4 5 6
+ rm u/d1/6 u/d1/7
+ sudo mount -o remount,ro,shwh u
+ sudo find rw ro_mid
rw
rw/.wh..wh.aufs
rw/.wh..wh.plnk
rw/.wh..wh.orph
rw/d1
rw/d1/.wh.6
rw/d1/.wh.7
ro_mid
ro_mid/d1
ro_mid/d1/.wh.2
ro_mid/d1/.wh.3
ro_mid/d1/.wh.4
ro_mid/d1/four
ro_mid/d2
ro_mid/d2/1
ro_mid/d2/2
ro_mid/d2/3
ro_mid/d2/4
ro_mid/d2/5
ro_mid/d2/6
+ sudo aubrsync _move u rw ro_bot --remove-source-files
--exclude=.wh..wh.aufs --exclude=.wh..wh.plnk --exclude=.wh..wh.orph
--max-delete=0 rw/ ro_mid
+ mount -o remount,ro,udba=reval,noshwh /tmp/u
+ eval _move --remove-source-files --exclude=.wh..wh.aufs
--exclude=.wh..wh.plnk --exclude=.wh..wh.orph --max-delete=0 rw/ ro_mid
+ _move --remove-source-files --exclude=.wh..wh.aufs --exclude=.wh..wh.plnk
--exclude=.wh..wh.orph --max-delete=0 rw/ ro_mid
+ set +x
aubrsync: warning, -i is not specified
+ rsync --exclude=lost+found -aHSx --devices --specials --delete-before
--remove-source-files --exclude=.wh..wh.aufs --exclude=.wh..wh.plnk
--exclude=.wh..wh.orph --max-delete=0 rw/ ro_mid
cannot delete non-empty directory: d2
Deletions stopped due to --max-delete limit (10 skipped)
rsync error: the --max-delete limit stopped deletions (code 25) at main.c(1058)
[sender=3.0.3]
+ mount -o remount,udba=reval,noshwh,ro,si=d50767e3e9b2d9d5,shwh /tmp/u
+ :
+ sudo find rw ro_mid
rw
rw/.wh..wh.aufs
rw/.wh..wh.plnk
rw/.wh..wh.orph
rw/d1
ro_mid
ro_mid/d1
ro_mid/d1/.wh.2
ro_mid/d1/.wh.3
ro_mid/d1/.wh.4
ro_mid/d1/four
ro_mid/d1/.wh.6
ro_mid/d1/.wh.7
ro_mid/d2
ro_mid/d2/1
ro_mid/d2/2
ro_mid/d2/3
ro_mid/d2/4
ro_mid/d2/5
ro_mid/d2/6
+ sudo umount u
----------------------------------------------------------------------
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