Re: [Qemu-devel] VirtIO 9p mount_tag (bogus?) limit of 32 bytes

["M. Mohan Kumar" <mohan@in.ibm.com>]

Hi Anthony,

When I tried with ldconfig version 2.14.90, ldconfig successfully completed

QEMU version: 1.0.50
Kernel version: 3.3.0-rc6+

Could you please try with recent ldconfig?

On 02/22/2012 09:28 AM, C Anthony Risinger wrote:
> On Sat, Feb 18, 2012 at 11:38 AM, Aneesh Kumar K.V
> <aneesh.kumar@linux.vnet.ibm.com>  wrote:
>> On Thu, 16 Feb 2012 06:20:21 -0600, C Anthony Risinger<anthony@xtfx.me>  wrote:
>>> a) mapped FS security policy (xattrs) causes `ldconfig` to abort()?
>>> root or normal user ...
>>>
>>> somehow `ldconfig` gets a duplicate inode while constructing the
>>> cache, even though it already de-duped (confirmed via gdb and grep --
>>> only a single abort() in the source)
>>>
>>> b) unable to run `locale-gen` on *any* virtfs configuration? (strace)
>>>
>>> [...]
>>> mmap(NULL, 536870912, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
>>> 0x7fb3aac63000
>>> mmap(0x7fb3aac63000, 103860, PROT_READ|PROT_WRITE,
>>> MAP_SHARED|MAP_FIXED, 3, 0) = -1 EINVAL (Invalid argument)
>>> cannot map archive header: Invalid argument
>>>
>>> c) package files containing device nodes fail (maybe this is expected
>>> ...); specifically `/lib/udev/devices/loop0`
>>>
>> Is this with 9p2000.L ?. What is the guest kernel version ?
> (not sure if list will accept this ... too much traffic! had to remove myself)
>
> yes this is with 9p2000.L, both host and guests run kernel 3.2.5.  i'm
> happy to provide/try additional information/tests if useful.
>
> ... is there really no chance of upping the max path?  seems like
> config space will be a big constraint, forever :-(
>
> and i'm very much willing to do additional testing for the other
> issues as well (i had to revert to qemu-as-root to get passthru
> working 100% on rootfs ... ldconfig is kind of critical :-).  are
> these known issues?
>