[Users] NFS with RHEL5 kernel?

[Vasily Tarasov]

Hello,

you should allow kernel threads in VEs by doing:

HN# sysctl kernel.ve_allow_kthreads=1

Thanks,
Vasily

On Mon, 2007-05-14 at 16:32 -0700, E Frank Ball wrote:
> I tried using the RHEL 5 kernel again
> (ovzkernel-2.6.18-8.el5.028stab031.1.i686.rpm) and I still
> can't get NFS to work.  I tried it without amd (the
> automounter) this time.  I tried mounts from both HP-UX and
> NAS servers.
> 
> I get a "mount:  permission denied" error, and this spews
> onto the console:
> 
> 
> lockd_up: no pid, 10 users??
> kernel_thread call inside VE
>  [<c0401b07>] kernel_thread+0x37/0xca
>  [<c0459d88>] __alloc_pages+0x2bd/0x2d8
>  [<e0c2da9c>] svc_create_thread+0xe3/0x10b [sunrpc]
>  [<e0bd2e2a>] lockd+0x0/0x2e2 [lockd]
>  [<e0bd2bcd>] lockd_up+0x100/0x135 [lockd]
>  [<e0cf6742>] nfs_start_lockd+0x16/0x33 [nfs]
>  [<e0cf7296>] nfs_create_server+0x1f8/0x3fe [nfs]
>  [<c0425816>] __do_softirq+0x84/0x109
>  [<c04259ec>] local_bh_enable+0x74/0x7f
>  [<c059f749>] dev_queue_xmit+0x22d/0x24c
>  [<c05be39d>] ip_output+0x1ec/0x217
>  [<c0486b25>] __d_lookup+0x98/0xfe
>  [<c047d4c0>] do_lookup+0x6a/0x178
>  [<e091892d>] ext3_permission+0x0/0xa [ext3]
>  [<e0cfd79a>] nfs_get_sb+0x3d5/0x3f5 [nfs]
>  [<c0477936>] vfs_kern_mount+0x39/0x68
>  [<c0477997>] do_kern_mount+0x25/0x36
>  [<c048b8b9>] do_mount+0x618/0x699
>  [<c04185de>] find_busiest_group+0xeb/0x45c
>  [<c04386d7>] change_slab_charged+0xce/0xec
>  [<c041b14b>] rebalance_tick+0x2d2/0x4a9
>  [<c04367a6>] hrtimer_run_queues+0xd3/0x15e
>  [<c048a4a7>] copy_mount_options+0x90/0x109
>  [<e091892d>] ext3_permission+0x0/0xa [ext3]
>  [<e0cfd79a>] nfs_get_sb+0x3d5/0x3f5 [nfs]
>  [<c0477936>] vfs_kern_mount+0x39/0x68
>  [<c0477997>] do_kern_mount+0x25/0x36
>  [<c048b8b9>] do_mount+0x618/0x699
>  [<c04386d7>] change_slab_charged+0xce/0xec
>  [<c0438860>] ub_slab_charge+0x67/0x10a
>  [<c05c0152>] inet_bind_bucket_create+0x10/0x4b
>  [<c05c1bf9>] inet_csk_get_port+0x21c/0x226
>  [<c05f8787>] _spin_lock_bh+0x8/0x18
>  [<c0596088>] release_sock+0xc/0x91
>  [<c05dc682>] inet_bind+0x1d6/0x1de
>  [<c048a4a7>] copy_mount_options+0x90/0x109
>  [<c0432473>] search_exception_tables+0x14/0x25
>  [<c0415dab>] fixup_exception+0xb/0x20
>  [<c05f98c5>] do_page_fault+0x30f/0x498
>  [<c05f95b6>] do_page_fault+0x0/0x498
>  [<c05fba29>] iret_exc+0x4e9/0xac0
>  [<c048b9a7>] sys_mount+0x6d/0xa5
>  [<c05fa67b>] syscall_call+0x7/0xb
>  [<c05f007b>] xfrm_get_sa+0x4b/0x6a
>  =======================
> lockd_up: create thread failed, error=-1
> 
> 
> This is what I have in /etc/fstab:
> 
> lapis:/vol/v1/d27/users/sm2   /home/sm2 nfs
> hard,intr,nosuid,actimeo=1,rsize=8192,wsize=8192 0 0
> 
> lapis:/vol/v1/d27/SM2   /gfs/prod/SM2   nfs
> hard,intr,nosuid,actimeo=1,rsize=8192,wsize=8192 0 0
> 
> socobld:/hfs/d1/gos     /gfs/prod/gos   nfs
> hard,intr,nosuid,actimeo=1,rsize=8192,wsize=8192 0 0
> 
> beryl:/vol/v8/d22/data/MIDRF1   /gfs/prod/MIDRF1  nfs
> hard,intr,nosuid,actimeo=1,rsize=8192,wsize=8192 0 0
> 
> 
> E Frank Ball                efball at efball.com
> 
> 
> 
> On Thu, Apr 12, 2007 at 12:44:45PM +0400, Vasily Tarasov wrote:
>  > Hello,
>  > 
>  > Can you describe in more details how it doesn't work? :)
>  > 
>  > Thanks,
>  > Vasily.
>  > 
>  > E Frank Ball wrote:
>  > >I have NFS mounts inside the VE working fine with
>  > >kernel-smp-2.6.18-ovz028stab027.1.i686.rpm.
>  > >
>  > >I tried the ovzkernel-2.6.18-8.el5.028stab027.1.i686.rpm
>  > >kernel, but NFS doesn't seem to work.
>  > >
>  > >Is NFS supported in the openvz RHEL5 kernels?  The changlog mentions NFS
>  > >a couple places, but maybe that's not NFS mounts within the VE?
>  > >
>  > >The NFS page in the wiki seems out of date with the new kernels.
>  > >
>  > >Thank you,
>  > >
>  > 
>