On 24 Jan 2020, at 11:49, Felix Rubio wrote:
Hi Benjamin,
I have enabled the debug logging on nfsd by running
When mounting from the client, this is what I get:
[629588.647849] nfsd_dispatch: vers 4 proc 1
[629588.655615] nfsv4 compound op #1/1: 53 (OP_SEQUENCE)
[629588.663926] __find_in_sessionid_hashtbl:
1579604994:2010353049:95:0
[629588.675361] nfsd4_sequence: slotid 0
[629588.679065] check_slot_seqid enter. seqid 644 slot_seqid 643
[629588.684589] nfsv4 compound op ffff882839705080 opcnt 1 #1: 53:
status 0
[629588.691545] nfsv4 compound returned 0
[629588.695292] --> nfsd4_store_cache_entry slot ffff882806e83000
[629588.701933] renewing client (clientid 5e26dc02/77d38d99)
[629591.804857] nfsd_dispatch: vers 4 proc 1
[629591.809364] nfsv4 compound op #1/4: 53 (OP_SEQUENCE)
[629591.814944] __find_in_sessionid_hashtbl:
1579604994:2010353053:99:0
[629591.822163] nfsd4_sequence: slotid 0
[629591.826670] check_slot_seqid enter. seqid 155 slot_seqid 154
[629591.832771] nfsv4 compound op ffff882839705080 opcnt 4 #1: 53:
status 0
[629591.839864] nfsv4 compound op #2/4: 24 (OP_PUTROOTFH)
[629591.845161] nfsd: fh_compose(exp 08:02/17468677 /export,
ino=17468677)
[629591.851706] nfsv4 compound op ffff882839705080 opcnt 4 #2: 24:
status 10016
[629591.859660] nfsv4 compound returned 10016
So this is definitely the server returning NFS4ERR_WRONGSEC..
[629591.864797] --> nfsd4_store_cache_entry slot ffff882838b9e000
[629591.872968] renewing client (clientid 5e26dc02/77d38d9d)
[629591.889085] nfsd_dispatch: vers 4 proc 1
[629591.893713] nfsv4 compound op #1/4: 53 (OP_SEQUENCE)
[629591.899703] __find_in_sessionid_hashtbl:
1579604994:2010353053:99:0
[629591.906687] nfsd4_sequence: slotid 0
[629591.912695] check_slot_seqid enter. seqid 156 slot_seqid 155
[629591.918261] nfsv4 compound op ffff882839705080 opcnt 4 #1: 53:
status 0
[629591.924866] nfsv4 compound op #2/4: 22 (OP_PUTFH)
[629591.931075] nfsd: fh_verify(32: 01060001 63ce4307 5a18c100
00000000 00000000 1fba000a)
[629591.940556] nfsv4 compound op ffff882839705080 opcnt 4 #2: 22:
status 0
[629591.948776] nfsv4 compound op #3/4: 3 (OP_ACCESS)
[629591.954607] nfsd: fh_verify(32: 01060001 63ce4307 5a18c100
00000000 00000000 1fba000a)
[629591.967117] nfsv4 compound op ffff882839705080 opcnt 4 #3: 3:
status 0
[629591.975364] nfsv4 compound op #4/4: 9 (OP_GETATTR)
[629591.980854] nfsd: fh_verify(32: 01060001 63ce4307 5a18c100
00000000 00000000 1fba000a)
[629591.990257] nfsv4 compound op ffff882839705080 opcnt 4 #4: 9:
status 0
[629591.996796] nfsv4 compound returned 0
[629592.001758] --> nfsd4_store_cache_entry slot ffff882838b9e000
[629592.008061] renewing client (clientid 5e26dc02/77d38d9d)
Using wireshark, this is the log of the packages from/to that ip
address:
# tshark -i eth0 -p -w /tmp/nfs_mount.cap host 10.1.0.12 and port nfs
# tshark -r /tmp/nfs_mount.cap
1 0.000000000 10.1.0.12 -> 10.0.2.9 NFS 202 V4 Call PUTROOTFH
| GETATTR
..to this call ^^ ..
2 0.000058001 10.0.2.9 -> 10.1.0.12 TCP 54 nfs > rndc [ACK]
Seq=1 Ack=149 Win=1432 Len=0
3 0.074041118 10.0.2.9 -> 10.1.0.12 NFS 146 V4 Reply (Call In
1) PUTROOTFH Status: NFS4ERR_WRONGSEC
4 0.074927630 10.1.0.12 -> 10.0.2.9 TCP 54 rndc > nfs [ACK]
Seq=149 Ack=93 Win=1476 Len=0
5 0.084223658 10.1.0.12 -> 10.0.2.9 NFS 266 V4 Call ACCESS
FH: 0xea1b01ae, [Check: RD LU MD XT DL]
6 0.084270458 10.0.2.9 -> 10.1.0.12 TCP 54 nfs > rndc [ACK]
Seq=93 Ack=361 Win=1432 Len=0
7 0.208635667 10.0.2.9 -> 10.1.0.12 NFS 254 V4 Reply (Call In
5) ACCESS, [Access Denied: RD MD XT DL], [Allowed: LU]
8 0.248855020 10.1.0.12 -> 10.0.2.9 TCP 54 rndc > nfs [ACK]
Seq=361 Ack=293 Win=1498 Len=0
I think the frame of interest is #1, so this is its contents:
Frame 1: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits)
on interface 0
Interface id: 0
Encapsulation type: Ethernet (1)
Arrival Time: Jan 24, 2020 17:39:05.721360043 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1579883945.721360043 seconds
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 202 bytes (1616 bits)
Capture Length: 202 bytes (1616 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ip:tcp:rpc]
Ethernet II, Src: 00:81:c4:c1:50:7f (00:81:c4:c1:50:7f), Dst:
Microsof_44:24:d3 (00:0d:3a:44:24:d3)
Destination: Microsof_44:24:d3 (00:0d:3a:44:24:d3)
Address: Microsof_44:24:d3 (00:0d:3a:44:24:d3)
.... ..0. .... .... .... .... = LG bit: Globally unique
address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address
(unicast)
Source: 00:81:c4:c1:50:7f (00:81:c4:c1:50:7f)
Address: 00:81:c4:c1:50:7f (00:81:c4:c1:50:7f)
.... ..0. .... .... .... .... = LG bit: Globally unique
address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address
(unicast)
Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.1.0.12 (10.1.0.12), Dst: 10.0.2.9
(10.0.2.9)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN:
0x00: Not-ECT (Not ECN-Capable Transport))
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..00 = Explicit Congestion Notification: Not-ECT (Not
ECN-Capable Transport) (0x00)
Total Length: 188
Identification: 0xa3e0 (41952)
Flags: 0x02 (Don't Fragment)
0... .... = Reserved bit: Not set
.1.. .... = Don't fragment: Set
..0. .... = More fragments: Not set
Fragment offset: 0
Time to live: 64
Protocol: TCP (6)
Header checksum: 0x8046 [validation disabled]
[Good: False]
[Bad: False]
Source: 10.1.0.12 (10.1.0.12)
Destination: 10.0.2.9 (10.0.2.9)
Transmission Control Protocol, Src Port: rndc (953), Dst Port: nfs
(2049), Seq: 1, Ack: 1, Len: 148
Source port: rndc (953)
Destination port: nfs (2049)
[Stream index: 0]
Sequence number: 1 (relative sequence number)
[Next sequence number: 149 (relative sequence number)]
Acknowledgment number: 1 (relative ack number)
Header length: 20 bytes
Flags: 0x018 (PSH, ACK)
000. .... .... = Reserved: Not set
...0 .... .... = Nonce: Not set
.... 0... .... = Congestion Window Reduced (CWR): Not set
.... .0.. .... = ECN-Echo: Not set
.... ..0. .... = Urgent: Not set
.... ...1 .... = Acknowledgment: Set
.... .... 1... = Push: Set
.... .... .0.. = Reset: Not set
.... .... ..0. = Syn: Not set
.... .... ...0 = Fin: Not set
Window size value: 1476
[Calculated window size: 1476]
[Window size scaling factor: -1 (unknown)]
Checksum: 0x4455 [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
[SEQ/ACK analysis]
[Bytes in flight: 148]
Remote Procedure Call, Type:Call XID:0xd17c6210
Fragment header: Last fragment, 144 bytes
1... .... .... .... .... .... .... .... = Last Fragment: Yes
.000 0000 0000 0000 0000 0000 1001 0000 = Fragment Length: 144
XID: 0xd17c6210 (3514589712)
Message Type: Call (0)
RPC Version: 2
Program: NFS (100003)
Program Version: 4
Procedure: COMPOUND (1)
Credentials
Flavor: AUTH_UNIX (1)
.. and the client is using AUTH_UNIX, or sec=sys. Seems your server
isn't
picking up the change to the export for the root for some reason.
How are you modifying the export? What does `exportfs -v` say?
Ben
