Re: [PATCH] xfstests: avoid ext4/306 failures caused by incompatible mount options

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* Eric Sandeen <esandeen@xxxxxxxxxx>:
> On 1/29/14, 3:38 PM, Theodore Ts'o wrote:
> > On Wed, Jan 29, 2014 at 03:45:02PM -0500, Eric Whitney wrote:
> >> ext4/306 will fail when mounting the ext3 file system it creates if an
> >> ext3-incompatible mount option is applied by _scratch_mount.  This can
> >> happen if EXT_MOUNT_OPTIONS is defined appropriately in the test
> >> environment.  For example, the block_validity option is commonly used
> >> to enhance ext4 testing, and it is not supported by ext3.  Fix this by
> >> not including any mount options defined by the test environment.
> > 
> > I'm not sure I understand why the test is insisting that the file
> > system be mounted using ext3.  If the file system is created without
> > the extents flag, all of the files will be created using indirect
> > blocks, and fundamentally what this test is getting at is that after
> > we grow the file system using resize2fs, the new blocks are available
> > to be allocated and attached to an indirect block file.
> > 
> > We can do this by using ext4; I'm not sure why this test is trying to
> > use ext3 to set up the test flie system.  It might be better to get
> > rid of the requirement to create the file system using ext3, since it
> > will make the test runnable even if the ext3 file system hasn't been
> > configured into the system and CONFIG_EXT23_AS_EXT4 is not enabled.
> > 
> > IIRC, Eric Sandeen wrote this test --- Eric, am I missing some reason
> > why it was necessary to use ext3 here?
> 
> Nope.  Tomayto, tomahto - I think the original report had trouble with
> an ext3 filesystem, so that's how I wrote the testcase.
> 
> It could be fixed either way, I think.
> 

If using ext3 doesn't add any additional value to the test, using ext4
instead certainly simplifies it.  I'll post a V2 shortly.

Thanks,
Eric


> -Eric
> 
> > 
> > 					- Ted
> > 
> 

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