Re: FIO bug

[Jens Axboe <jens.axboe@oracle.com>]

On Fri, Feb 05 2010, H. Tolley wrote:
> 
> The function static void get_file_system_type(struct fio_file *f)��
> (in file filesetup.c) has a call to lstat(..) which if given a
> symbolic link will give information about the link instead of
> information about the target of the link.� In Solaris it is very
> common that the disk device nodes in /dev/dsk/ are symbolic links to
> files in /devices/... and so the call to lstat(..) will not properly
> identify a file as a block device instead of a normal file.� 
> 
> A call to stat(..) on a filename that represents a block device will
> not return the proper size on Solaris.� Combined with the
> above-mentioned mis-identification of a link to a block device as a
> normal file, the function file_size(..) is invoked rather than a call
> to bdev_size(..) and fio will not run properly.
> 
> Fix: Can the call to lstat(..) in get_file_system_type(..) be replaced
> by a call to stat(..)?
> 
> This happens on Open Solaris v10 x86_64.

That does look like a bug, that stat should return info about the real
device and not a potential link. I have committed a fix for that now.

-- 
Jens Axboe