[parted-devel] [PATCH] unneeded stats...

Bryn M. Reeves bmr at redhat.com
Mon Feb 23 16:10:58 UTC 2009

Joel Granados wrote:
> On Mon, Feb 23, 2009 at 03:50:02PM +0000, Bryn M. Reeves wrote:
>> Joel Granados Moreno wrote:
>>> Hello List
>>> Here is the reviewed patch for the unneeded stats that we are doing when
>>> looking for mounted devices.  It is modified to not search for "server
>>> strings" (//servername/path/to/somewhere)
>>> Review appreciated
>> There's a slight gotcha with this approach in that the kernel will  
>> honour the names that userspace gives it in a mount syscall. E.g. if I  
>> mount /dev/sda then that's what appears in /proc/mounts but if I mount  
>> //dev/sda, then that's the string that will appear.
>> E.g.:
>> # mount //dev/mapper/cyan /mnt
>> # grep cyan /proc/mounts
>> //dev/mapper/cyan /mnt ext3 rw,data=ordered 0 0
> I tested for this situation in my fedora10 environment  With the latest
> parted.  And if I do the mount with "//" /proc/mounts will show it with

Yep, just confirmed that on my f10 box so this has changed somewhere 
between RHEL5's 2.6.18 (where I tested previously) and current upstream.

> just one.  This comment does make me doubt a little of the patch.  The
> question here is, will kernel always have this behavior for now on?

I think we still need to take account of this as users could be 
running on pretty much any kernel release. It'd be useful if there was 
a simple check that could tell us whether or not the running kernel 
will collapse slashes in mounts but I don't think such a think exists.


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