On Sun, Jan 24, 2010 at 4:54 PM, Eric Van Hensbergen <ericvh@gmail.com>wrote:

> On Sun, Jan 24, 2010 at 7:02 AM, Lorenzo Bolla <lbolla@gmail.com> wrote:
> > I'm trying to use "9 mount" to mount acme's socket (in `namespace`/acme)
> to
> > some directory in /mnt (let's say /mnt/acme). I'm using ArchLInux:
> > $> uname -a
> > Linux eee 2.6.32-ARCH #1 SMP PREEMPT Sat Dec 26 08:26:17 UTC 2009 i686
> > Intel(R) Atom(TM) CPU N280 @ 1.66GHz GenuineIntel GNU/Linux
> > The simple command:
> > mount -t 9p -o unix,trans=unix,name=lollo,uname=lollo,noextend,nodev
> > /tmp/ns.lollo.:0/acme /home/lollo/acme
> > and I've traced down the offending option to be "trans=unix".
> > Any suggestions?
>
> you shouldn't need -o unix,trans=unix -- just trans=unix.
> Double check the 9pnet module is installed as well as the 9p module
> (it should be automagically in the kernel version you are running).
> Also, a good tip when trying to figure out whats going south when v9fs
> is involved is to add debug=0xffff into your mount options and post
> the respective sections of your /var/log/messages.
>
> Just tried it on 2.6.33-rc4 and it mounted fine
> mount -t 9p /tmp/ns.root.localhost:10/acme /mnt -o trans=unix,uname=root
>
>       -eric
>
>
Thanks for the answer Eric.
9pnet is loaded, as well as 9p.
I've tried to mount both as a user (with sudo) and as root, with no luck.
Here is the messages I get, with debug=0xffff enabled.


Jan 24 17:51:19 eee kernel: *pde = 00000000
Jan 24 17:51:19 eee kernel: Modules linked in: 9p 9pnet fscache usbhid hid
ipv6 ntfs arc4 ecb ath9k snd_seq_dummy mac80211 i915 snd_seq_oss ath
uvcvideo snd_seq_midi_event drm_kms_helper videodev joydev
snd_hda_codec_realtek snd_seq cfg80211 v4l1_compat eeepc_laptop drm
snd_seq_device snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss iTCO_wdt
rfkill fan psmouse iTCO_vendor_support i2c_algo_bit snd_mixer_oss snd_pcm
intel_agp uhci_hcd snd_timer ehci_hcd led_class pci_hotplug ac serio_raw
pcspkr i2c_core sg atl1e thermal agpgart processor battery snd usbcore video
output soundcore button snd_page_alloc evdev rtc_cmos rtc_core rtc_lib ext3
jbd mbcache sd_mod ata_piix ata_generic pata_acpi libata scsi_mod
Jan 24 17:51:19 eee kernel:
Jan 24 17:51:19 eee kernel: Pid: 22660, comm: mount Tainted: G      D
 (2.6.32-ARCH #1) 1000HE
Jan 24 17:51:19 eee kernel: EIP: 0060:[<f81144ff>] EFLAGS: 00010246 CPU: 1
Jan 24 17:51:19 eee kernel: EIP is at p9_fid_create+0x6f/0x140 [9pnet]
Jan 24 17:51:19 eee kernel: EAX: 00000001 EBX: f5a247c0 ECX: 00000000 EDX:
00000202
Jan 24 17:51:19 eee kernel: ESI: f627d800 EDI: f5a247dc EBP: f6673000 ESP:
e123fe24
Jan 24 17:51:19 eee kernel: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Jan 24 17:51:19 eee kernel: f64c0fb8 00000000 00002000 f5a24540 00000000
f627d800 f6673000 f81155fe
Jan 24 17:51:19 eee kernel: <0> f8115b82 00000023 00000286 e8083f00 00000000
f5a244c6 f5a244ca f64c0fbe
Jan 24 17:51:19 eee kernel: <0> f64c0fb8 c1174cf8 e123feb8 00000000 00000000
f5a24540 f59a9000 00000000
Jan 24 17:51:19 eee kernel: [<f81155fe>] ? p9_client_attach+0x1e/0x110
[9pnet]
Jan 24 17:51:19 eee kernel: [<f8115b82>] ? p9_client_create+0xe2/0x2a0
[9pnet]
Jan 24 17:51:19 eee kernel: [<c1174cf8>] ? match_number+0x88/0xa0
Jan 24 17:51:19 eee kernel: [<f819b044>] ? v9fs_session_init+0x124/0x3d0
[9p]
Jan 24 17:51:19 eee kernel: [<f819909f>] ? v9fs_get_sb+0x4f/0x250 [9p]
Jan 24 17:51:19 eee kernel: [<c10e12d9>] ? vfs_kern_mount+0x69/0x170
Jan 24 17:51:19 eee kernel: [<c10f4f72>] ? get_fs_type+0x32/0xb0
Jan 24 17:51:19 eee kernel: [<c10e143f>] ? do_kern_mount+0x3f/0xe0
Jan 24 17:51:19 eee kernel: [<c10f7ae0>] ? do_mount+0x1f0/0x730
Jan 24 17:51:19 eee kernel: [<c10f5f40>] ? copy_mount_options+0xd0/0x140
Jan 24 17:51:19 eee kernel: [<c10f808e>] ? sys_mount+0x6e/0xa0
Jan 24 17:51:19 eee kernel: [<c10039f3>] ? sysenter_do_call+0x12/0x28
Jan 24 17:51:19 eee kernel: ---[ end trace 3fd7199bdae8deac ]---


Thanks again for you help!
Lorenzo.