On Fri, Jan 27, 2012 at 09:57:27PM -0600, Eric Sandeen wrote: > On 1/27/12 4:53 PM, Richard W.M. Jones wrote: > > > > I've just noticed that with the latest e2fsprogs, kernel 3.3.0 and > > blkid (util-linux 2.20.1), I see this spurious warning when using > > mke2fs on a file: > > > > $ truncate -s 4G test1.img > > $ mke2fs -t ext2 -q -F test1.img > > warning: Unable to get device geometry for test1.img > > > > Oddly this *doesn't* happen except on the very bleeding edge latest > > versions of everything. I've not (yet) worked out exactly what > > component has to be upgraded to see it ... > > Taking a quick look, I don't _think_ anything above blkid changed > in e2fsprogs lately, but keep us posted. Some more observations: - The warning is 32 bit *only*. Sorry I didn't notice this rather obvious point before. I have two identically configured Rawhide guests, except that one is i686 and the other is x86-64, and only the i686 guest gives this warning. - If the disk is 1G, no warning. After some binary searching I found the threshold for the warning is 'truncate -s 2048M' (greater than or equal gives the warning; smaller, no warning). > Does mkfs.xfs do any differently? No warning, at least, not with the default settings and a 4G disk on 32 bit. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
