Re: udev memory problem when trying to plug a disk with corrupted partition table

[berenger.morel@neutralite.org]

Le 17.11.2014 17:55, Henrique de Moraes Holschuh a écrit :
> On Mon, 17 Nov 2014, berenger.morel@neutralite.org wrote:
> > Now, fact is that the hard-disk partition table is no longer
> > correct, and when I plug it (it is an USB HD) into a Debian system,
> > it makes udev eating all my memory, and more.
>
> Please image the partition table so that someone can reproduce the 
> issue and
> fix it... looks like an useful test case :-)
>
> > I think that udev crashes, instead of simply acknowledging that it
>
> It is likely triggering a bug somewhere in the load of stuff we run 
> when a
> disk is hotplugged to create the links in /dev/by-uuid, etc.
>
> I.e. maybe the bug is not in udev itself.
>
> > So, does anyone know how to make udev stopping gracefully to detect
> > the full list of partitions, and restrict itself to real hardware?
>
> The kernel itself parses the partition table.  Did it output any 
> error
> messages?
>
> > Also, I should probably report that bug, but how could I find more
> > informations to provide, since I strongly doubt that it can be
> > reproduced, and so fixed, without the "correct" partition table?
>
> Indeed.  Either preserve enough of that partition table to be able to
> reproduce the bug, or give up on it ever being found at the moment 
> you
> decide to clean up the disk to be able to use it :-(

I've already built an image of the disk, but it's a 500GB disk. I doubt 
you'll want to download it hehe.
So, what part of that disk should I extract, which could be usable and 
sharable? Partition table, of course, which is probably at disk's 
beginning, but how long might it be?