On Mon, Nov 13, 2017 at 4:45 PM, Chandan Rajendra <chandan@xxxxxxxxxxxxxxxxxx> wrote: > This commit adds a test to verify consistent st_ino feature when > the overlayfs instance is composed of two different underlying > filesystem instances. > > For example, > $ mount -t xfs /dev/loop0 /mnt/test > $ mount -t xfs /dev/loop1 /mnt/scratch > $ mkdir /mnt/scratch/upper > $ mkdir /mnt/scratch/work > $ mount -t overlay overlay -o lowerdir=/mnt/test \ > -o upperdir=/mnt/scratch/upper \ > -o workdir=/mnt/scratch/work /mnt/merge > > The goal of this test is to verify that overlayfs returns consistent > st_ino for the following scenarios, > - Copy-up of lowerdir files > - Rename files and drop dentry/inode cache > - Remount the overlayfs instance > > Signed-off-by: Chandan Rajendra <chandan@xxxxxxxxxxxxxxxxxx> > --- > Eryu, > To pass, This test requires Amir's "Overlayfs: constant st_ino/d_ino for > non-samefs" patchset. But this patch can be merged as it indicates an > incorrect behaviour by overlayfs code as presently available on > upstream kernel. Eryu, To add a bit more context This test, like test 041 checks for bad behavior of overlayfs with upper/lower not on the samefs. I posted work to address these issues, but the work was not accepted to v4.15, so 041 as well as the new proposed test are still going to fail on v4.15. I had already posted some new patches (i.e. the 'xino' mount option which these patches refer to), available on my ovl-xino development branch. The new work addresses those issues and got positive feedback from Miklos, so it may land in the next merge cycle. Thanks Chandan, I will review this test later. Cheers, Amir. -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
