I figured out my issue and it had nothing to do with the virtual server. I had to set world executable permissions on the folder where the apache logs reside for some reason. To figure this out I had set the sunrpc.nfsd_debug level to 3 and then I caught the errors which determined the rights issue.
I experienced another issue yesterday where the virtual host server crashed after I made a change to the /etc/hosts.allow file on the guest system to allow all traffic from the host. I did this because I saw a log entry with request from unauthorized host getting generated with the IP from the host system.
The failure on the host system brought both virtual servers down. I had to hard boot the server and brought up both guest systems with no problem. Here is what I found in the logs:
Jan 22 11:07:14 web kernel: Unable to handle kernel paging request at virtual address 00160082
Jan 22 11:07:14 web kernel: printing eip:
Jan 22 11:07:14 web kernel: f8b31f50
Jan 22 11:07:14 web kernel: *pde = 30d30001
Jan 22 11:07:14 web kernel: Oops: 0000
1
Jan 22 11:07:14 web kernel: SMP
Jan 22 11:07:14 web kernel: Modules linked in: nfsd exportfs autofs4 i2c_dev i2c_core nfs lockd nfs_acl vmnet(U) parport_pc
parport vmmon(U) sunrpc dm_mirror dm_mod button battery ac md5 ipv6 ohci_hcd hw_random k8_edac edac_mc tg3 floppy ext3 jbd mp
tscsih mptsas mptspi mptfc mptscsi mptbase sd_mod scsi_mod
Jan 22 11:07:14 web kernel: CPU: 0
Jan 22 11:07:14 web kernel: EIP: 0060:
<f8b31f50> Tainted: P VLI
Jan 22 11:07:14 web kernel: EFLAGS: 00010286 (2.6.9-67.0.1.ELsmp)
Jan 22 11:07:14 web kernel: EIP is at xdr_encode_string+0x11/0x23
sunrpc
Jan 22 11:07:14 web kernel: eax: 00000000 ebx: d97f8054 ecx: ffffffff edx: 00000000
Jan 22 11:07:14 web kernel: esi: 00160082 edi: 00160082 ebp: d97f804c esp: f739feb0
Jan 22 11:07:14 web kernel: ds: 007b es: 007b ss: 0068
Jan 22 11:07:14 web kernel: Process rpciod (pid: 2866, threadinfo=f739f000 task=f73750b0)
Jan 22 11:07:14 web kernel: Stack: 00000000 dae60034 d97f8054 dae60034 f8b8163f f7e24d60 f739feec c011e7fb
Jan 22 11:07:14 web kernel: 00000000 dae600c8 d97f8054 ce549000 dae60034 d97f804c f8b81fd0 f8b460d4
Jan 22 11:07:14 web kernel: f6b68e80 dae60010 f8b2d684 ce549000 f8b81f8e f6b68e80 f8b81f8e ce549028
Jan 22 11:07:14 web kernel: Call Trace:
Jan 22 11:07:14 web kernel:
<f8b8163f> nlm4_encode_lock+0x1e/0x1e7
lockd
Jan 22 11:07:14 web kernel:
<c011e7fb> __wake_up_common+0x36/0x51
Jan 22 11:07:14 web kernel:
<f8b81fd0> nlm4clt_encode_testargs+0x42/0x5e
lockd
Jan 22 11:07:14 web kernel:
<f8b2d684> rpcauth_wrap_req+0x69/0x70
sunrpc
Jan 22 11:07:14 web kernel:
<f8b81f8e> nlm4clt_encode_testargs+0x0/0x5e
lockd
Jan 22 11:07:14 web kernel:
<f8b81f8e> nlm4clt_encode_testargs+0x0/0x5e
lockd
Jan 22 11:07:14 web kernel:
<f8b289e9> call_encode+0xb8/0xe9
sunrpc
Jan 22 11:07:14 web kernel:
<f8b28cec> call_transmit+0x52/0x7f
sunrpc
Jan 22 11:07:14 web kernel:
<f8b2bf0b> __rpc_execute+0xa6/0x326
sunrpc
Jan 22 11:07:14 web kernel:
<c0107a87> do_IRQ+0x175/0x1ae
Jan 22 11:07:14 web kernel:
<f8b2c229> __rpc_schedule+0x3f/0x93
sunrpc
Jan 22 11:07:14 web kernel:
<f8b2c96a> rpciod+0xf7/0x251
sunrpc
Jan 22 11:07:14 web kernel:
<c012051d> autoremove_wake_function+0x0/0x2d
Jan 22 11:07:14 web kernel:
<c02d852e> ret_from_fork+0x6/0x14
Jan 22 11:07:14 web kernel:
<c012051d> autoremove_wake_function+0x0/0x2d
Jan 22 11:07:14 web kernel:
<f8b2c873> rpciod+0x0/0x251
sunrpc
Jan 22 11:07:14 web kernel:
<c01041f5> kernel_thread_helper+0x5/0xb
Jan 22 11:07:14 web kernel: Code: 00 00 ff 00 c1 eb 08 09 de 89 cb c1 eb 18 09 de 89 37 5b 5e 5f e9 6a ff ff ff 57 56 89 d6
31 d2 53 51 89 c3 83 c9 ff 89 f7 89 d0 <f2> ae f7 d1 49 5f 89 d8 89 f2 5b 5e 5f e9 a5 ff ff ff 55 89 d5
Jan 22 11:07:14 web kernel: <0>Fatal exception: panic in 5 seconds
