linux-kernel - Re: Unionmount and overlayfs testsuite

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Message-ID: <19229.1401392143@warthog.procyon.org.uk>
Date:	Thu, 29 May 2014 20:35:43 +0100
From:	David Howells <dhowells@...hat.com>
To:	sedat.dilek@...il.com
Cc:	dhowells@...hat.com, Miklos Szeredi <miklos@...redi.hu>,
	Al Viro <viro@...iv.linux.org.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>, apw@...onical.com,
	Felix Fietkau <nbd@...nwrt.org>, neilb@...e.de,
	jordipujolp@...il.com, ezk@....cs.sunysb.edu,
	"J. R. Okajima" <hooanon05@...oo.co.jp>, mszeredi@...e.cz
Subject: Re: Unionmount and overlayfs testsuite

Sedat Dilek <sedat.dilek@...il.com> wrote:

> # LC_ALL=C TEST_OVERLAYFS="1" ./run.sh
> [ run.sh ] TEST_OVERLAYFS is 1
> ***
> *** ./run.sh open-plain.test
> ***
> [ mount_union.sh ] TEST_OVERLAYFS is 1
> TEST100: Open O_RDONLY
>  - open_file -r /mnt/a/foo100 -R :xxx:yyy:zzz
>  - open_file -r /mnt/a/foo100 -R :xxx:yyy:zzz
> TEST101: Open O_WRONLY
>  - open_file -w /mnt/a/foo101 -W q
> /mnt/a/foo101: Test file not on upper filesystem  (line 30)

This looks like what I see when I run it:

	[root@...romeda union-testsuite]# TEST_OVERLAYFS=1 ./run.sh 
	***
	*** ./run.sh open-plain.test
	***
	umount: /mnt: not mounted
	TEST100: Open O_RDONLY
	 - open_file -r /mnt/a/foo100 -R :xxx:yyy:zzz
	 - open_file -r /mnt/a/foo100 -R :xxx:yyy:zzz
	TEST101: Open O_WRONLY
	 - open_file -w /mnt/a/foo101 -W q
	/mnt/a/foo101: Test file not on upper filesystem  (line 30)

I think the problem is that the script expecting the "upper" fs inodes to have
the overlay superblock dev ID and not the upper superblock dev ID.  That
should be easily fixable.

David
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