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From:   "Mora, Jorge" <Jorge.Mora@netapp.com>
To:     "zhoujie2011@fujitsu.com" <zhoujie2011@fujitsu.com>,
        Jeff Layton <jlayton@kernel.org>
CC:     linux-nfs <linux-nfs@vger.kernel.org>
Subject: Re: nfstest_delegation test can not stop
Thread-Topic: nfstest_delegation test can not stop
Thread-Index: AQHZVhyeEgfrYxW7RUGMwOMBUm8Jra77uYeAgAAsUpWAAstQgIASSXMAgAExjCmAAHj9AIAA9GF2
Date:   Thu, 30 Mar 2023 16:57:47 +0000
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Hello,=0A=
=0A=
First of all, the --client option can be used successfully when the system =
in which you are running the test is able to capture the traffic for both c=
lients, e.g., when you are running VMware and both clients are VMs. If you =
are using real clients, tcpdump will only capture traffic for the local sys=
tem.=0A=
=0A=
./nfstest_delegation -h=0A=
  Test options:=0A=
    --runtest=3DRUNTEST=0A=
          Comma separated list of tests to run, if list starts with a '^' t=
hen=0A=
          all tests are run except the ones listed [default: 'all']=0A=
    --client=3DCLIENT=0A=
          Remote NFS client and options used for recall delegation tests.=
=0A=
          Clients are separated by a ',' and each client definition is a li=
st=0A=
          of arguments separated by a ':' given in the following order if=
=0A=
          positional arguments is used (see examples):=0A=
          clientname:server:export:nfsversion:port:proto:sec:mtpoint [defau=
lt:=0A=
          'nfsversion=3D3:proto=3Dtcp:port=3D2049']=0A=
    --client-nfsvers=3DCLIENT_NFSVERS=0A=
          Comma separated list of valid NFS versions to use in the --client=
=0A=
          option. An NFS version from this list, which is different than th=
at=0A=
          given by --nfsversion, is selected and included in the --client=
=0A=
          option [default: 4.0,4.1]=0A=
=0A=
The second client is a combination of --client and --client-nfsvers and the=
 default for --client is 'nfsversion=3D3:proto=3Dtcp:port=3D2049'. This mea=
ns that the mount for the second 'client' is on the main client with the fo=
llowing nfs mount options: 'nfsversion=3D4.0:proto=3Dtcp:port=3D2049' or 'n=
fsversion=3D4.1:proto=3Dtcp:port=3D2049' depending on the value for option =
--nfsversion. In you case, --nfsversion=3D4 (if you mean 4.0) the mount opt=
ions for the second client should be 'nfsversion=3D4.1...'. This way main m=
ount is 4.0 (holding delegation) and the second mount is 4.1 (recall delega=
tion) on the same system so the network traffic could be fully captured.=0A=
=0A=
Of course, if you specify --nfsversion=3D4, the client will mount either 4.=
2, 4.1 or 4.0 (in your logs: NFS version of mount point: 4.2). You need to =
explicitly specify the NFS version as 4.0, 4.1 or 4.2.=0A=
=0A=
The reason why the test is hanging is because the server is sending NFS4ERR=
_DELAY to COMMIT:=0A=
133 2023-03-30 07:46:22.533580 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0xfd10f3db SEQUENCE;PUTFH;OPEN;GETFH;ACCESS;GETATTR stid:1,0xe3=
7587e3 rd_deleg_stid:1,0xf1c0280d FH:0x634cb2d9=0A=
135 2023-03-30 07:46:22.533973 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0xfe10f3db SEQUENCE;PUTFH;OPEN;GETFH;ACCESS;GETATTR stid:1,0x49=
7c4f68  FH:0x62ab8136=0A=
136 2023-03-30 07:46:22.534191 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0xff10f3db SEQUENCE;PUTFH;LOCK       FH:0x62ab8136 WRITE_LT off=
:0 len:4096 open(stid:1,0x497c4f68, seqid:0) seqid:0=0A=
137 2023-03-30 07:46:22.534304 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0xff10f3db SEQUENCE;PUTFH;LOCK       stid:1,0xd4ab77d1=0A=
146 2023-03-30 07:46:22.659988 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0x0011f3db SEQUENCE;PUTFH;WRITE;GETATTR FH:0x62ab8136 stid:0,0x=
d4ab77d1 off:0 len:4096 UNSTABLE4=0A=
147 2023-03-30 07:46:22.660009 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0x0111f3db SEQUENCE;PUTFH;WRITE;GETATTR FH:0x62ab8136 stid:0,0x=
d4ab77d1 off:4096 len:4096 UNSTABLE4=0A=
...=0A=
191 2023-03-30 07:46:22.660695 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0x1011f3db SEQUENCE;PUTFH;COMMIT     FH:0x62ab8136 off:0 len:0=
=0A=
192 2023-03-30 07:46:22.672090 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0x1011f3db SEQUENCE;PUTFH;COMMIT     NFS4ERR_DELAY=0A=
194 2023-03-30 07:46:22.778177 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0x1111f3db SEQUENCE;PUTFH;COMMIT     FH:0x62ab8136 off:0 len:0=
=0A=
195 2023-03-30 07:46:22.779064 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0x1111f3db SEQUENCE;PUTFH;COMMIT     NFS4ERR_DELAY=0A=
197 2023-03-30 07:46:22.882100 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0x1211f3db SEQUENCE;PUTFH;COMMIT     FH:0x62ab8136 off:0 len:0=
=0A=
198 2023-03-30 07:46:22.882566 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0x1211f3db SEQUENCE;PUTFH;COMMIT     NFS4ERR_DELAY=0A=
200 2023-03-30 07:46:22.986157 192.168.122.108 -> 192.168.122.110 NFS   v4.=
2 call  xid:0x1311f3db SEQUENCE;PUTFH;COMMIT     FH:0x62ab8136 off:0 len:0=
=0A=
201 2023-03-30 07:46:22.986931 192.168.122.110 -> 192.168.122.108 NFS   v4.=
2 reply xid:0x1311f3db SEQUENCE;PUTFH;COMMIT     NFS4ERR_DELAY=0A=
=0A=
As Jeff mentioned earlier, Linux server does not grant write delegations. I=
 don't know what server are you using but the OPEN clearly shows it did not=
 grant a write delegation so this test should fail.=0A=
=0A=
Here is a sample run against a RHEL 8.6 server:=0A=
./nfstest_delegation -s 192.168.68.86 -e /export --nfsversion 4.0 -v all --=
createlog --keeptraces --rexeclog --tracepoints nfs,nfs4 recall22=0A=
=0A=
*** Recall WRITE delegation with RENAME (DST) with file lock=0A=
    TEST: Running test 'recall22'=0A=
    DBG5: 10:48:51.644258 - Sync all buffers to disk=0A=
    DBG2: 10:48:51.651724 - Unmount volume: /usr/bin/sudo umount -f /mnt/t=
=0A=
    DBG5: 10:48:51.684054 - Sync all buffers to disk=0A=
    DBG2: 10:48:51.685482 - Unmount volume: /usr/bin/sudo umount -f /mnt/t_=
01=0A=
    DBG2: 10:48:51.719133 - Enable trace points: /usr/bin/sudo sh -c "echo =
1 > /sys/kernel/debug/tracing/events/nfs/enable"=0A=
    DBG2: 10:48:51.761795 - Enable trace points: /usr/bin/sudo sh -c "echo =
1 > /sys/kernel/debug/tracing/events/nfs4/enable"=0A=
    DBG2: 10:48:51.805703 - Capturing trace points: /usr/bin/sudo sh -c "ca=
t /sys/kernel/debug/tracing/trace_pipe > /tmp/nfstest_delegation_20230330_1=
04846_001.out"=0A=
    DBG2: 10:48:51.808284 - Trace start: /usr/bin/sudo /usr/sbin/tcpdump -i=
 ens160 -n -B 196608 -s 0 -w /tmp/nfstest_delegation_20230330_104846_001.ca=
p host 192.168.68.87=0A=
    DBG2: 10:48:52.904843 - Mount volume: /usr/bin/sudo mount -o vers=3D4.0=
,proto=3Dtcp,sec=3Dsys,hard,rsize=3D4096,wsize=3D4096 192.168.68.86:/export=
 /mnt/t=0A=
    DBG5: 10:48:53.045345 - Get the actual NFS version of mount point: find=
mnt /mnt/t=0A=
    DBG6: 10:48:53.053811 -     NFS version of mount point: 4.0=0A=
    DBG2: 10:48:53.054069 - Mount volume: /usr/bin/sudo mount -o vers=3D4.1=
,proto=3Dtcp,sec=3Dsys,hard,rsize=3D4096,wsize=3D4096 192.168.68.86:/export=
 /mnt/t_01=0A=
    DBG5: 10:48:53.194449 - Get the actual NFS version of mount point: find=
mnt /mnt/t_01=0A=
    DBG6: 10:48:53.202076 -     NFS version of mount point: 4.1=0A=
    DBG4: 10:48:53.202297 - Open /mnt/t/nfstest_delegation_20230330_104846_=
f_001 so open owner sticks around=0A=
    DBG2: 10:48:53.207257 - Open file for WRITE [/mnt/t/nfstest_delegation_=
20230330_104846_f_002]=0A=
    PASS: Open file for WRITE should succeed=0A=
    DBG3: 10:48:53.208168 - Lock /mnt/t/nfstest_delegation_20230330_104846_=
f_002 (F_SETLK, F_WRLCK) start=3D0 len=3D4096=0A=
    PASS: Lock file with F_WRLCK should succeed=0A=
    DBG3: 10:48:53.209489 - Write file on client holding delegation [/mnt/t=
/nfstest_delegation_20230330_104846_f_002]=0A=
    PASS: Write file on client holding delegation should succeed=0A=
    DBG2: 10:48:53.310548 - Rename into the file (DST) from another client =
to recall delegation [nfstest_delegation_20230330_104846_f_003 -> nfstest_d=
elegation_20230330_104846_f_002]=0A=
    PASS: Rename into the file (DST) from another client should succeed=0A=
    DBG3: 10:48:53.320851 - Write file after conflicting operation [/mnt/t/=
nfstest_delegation_20230330_104846_f_002]=0A=
    PASS: Write file after conflicting operation may succeed=0A=
    DBG4: 10:48:53.447733 - Close /mnt/t/nfstest_delegation_20230330_104846=
_f_002=0A=
    DBG5: 10:48:53.450185 - Sync all buffers to disk=0A=
    DBG2: 10:48:53.457125 - Unmount volume: /usr/bin/sudo umount -f /mnt/t=
=0A=
    DBG5: 10:48:53.515896 - Sync all buffers to disk=0A=
    DBG2: 10:48:53.520120 - Unmount volume: /usr/bin/sudo umount -f /mnt/t_=
01=0A=
    DBG5: 10:48:55.580838 - Get all processes: ps -ef=0A=
    DBG5: 10:48:55.621321 - Stopping packet trace capture: /usr/bin/sudo /u=
sr/bin/kill -SIGINT 348494=0A=
    DBG5: 10:48:55.656126 - Stopping packet trace capture: /usr/bin/sudo /u=
sr/bin/kill -SIGINT 348489=0A=
    DBG2: 10:48:55.788319 - Disable trace points: /usr/bin/sudo sh -c "echo=
 0 > /sys/kernel/debug/tracing/events/nfs/enable"=0A=
    DBG2: 10:48:55.829243 - Disable trace points: /usr/bin/sudo sh -c "echo=
 0 > /sys/kernel/debug/tracing/events/nfs4/enable"=0A=
    DBG5: 10:48:55.875925 - Get all processes: ps -ef=0A=
    DBG2: 10:48:55.908161 - Stopping trace points capture: /usr/bin/sudo /u=
sr/bin/kill -SIGINT 348493=0A=
    DBG2: 10:48:55.939992 - Stopping trace points capture: /usr/bin/sudo /u=
sr/bin/kill -SIGINT 348492=0A=
    DBG2: 10:48:55.972241 - Stopping trace points capture: /usr/bin/sudo /u=
sr/bin/kill -SIGINT 348488=0A=
    DBG1: 10:48:56.104525 - trace_open [/tmp/nfstest_delegation_20230330_10=
4846_001.cap]=0A=
    PASS: OPEN should be sent=0A=
    PASS: OPEN should be sent with CLAIM_NULL=0A=
    PASS: OPEN should be sent with the name of the file to be opened=0A=
    PASS: OPEN should be sent with the filehandle of the directory=0A=
    FAIL: WRITE delegation should be granted=0A=
    TIME: 4.570563s=0A=
=0A=
I also added option --tracepoints to collect all nfs and nfs4 tracepoints. =
These are the files that are created:=0A=
ll /tmp/nfstest_delegation_20230330_104846*=0A=
-rw-r--r--. 1 tcpdump tcpdump 106776 Mar 30 10:48 /tmp/nfstest_delegation_2=
0230330_104846_001.cap (packet trace)=0A=
-rw-r--r--. 1 root    root     64218 Mar 30 10:48 /tmp/nfstest_delegation_2=
0230330_104846_001.out (tracepoints)=0A=
-rw-rw-r--. 1 mora    mora       317 Mar 30 10:48 /tmp/nfstest_delegation_2=
0230330_104846_01.log  (second 'client' process log file)=0A=
-rw-rw-r--. 1 mora    mora      9779 Mar 30 10:48 /tmp/nfstest_delegation_2=
0230330_104846.log     (main logfile)=0A=
=0A=
=0A=
--Jorge=0A=
=0A=
________________________________________=0A=
From: zhoujie2011@fujitsu.com <zhoujie2011@fujitsu.com>=0A=
Sent: Wednesday, March 29, 2023 7:42 PM=0A=
To: Mora, Jorge; Jeff Layton=0A=
Cc: linux-nfs=0A=
Subject: Re: nfstest_delegation test can not stop=0A=
=0A=
NetApp Security WARNING: This is an external email. Do not click links or o=
pen attachments unless you recognize the sender and know the content is saf=
e.=0A=
=0A=
=0A=
=0A=
=0A=
hi,=0A=
=0A=
> I am still waiting for all the files created for the run, not just the ou=
tput to the screen:=0A=
>=0A=
> /tmp/nfstest_delegation_20230317_170647*=0A=
The log file is attached.=0A=
=0A=
best regards,=0A=
=0A=
>=0A=
> ping=0A=
>=0A=
> On 3/17/23 16:58, zhoujie2011 wrote:=0A=
>> hi,=0A=
>>=0A=
>>   > Can you provide a log file for the run?=0A=
>> run following command and test result is attached.=0A=
>> ./nfstest_delegation --nfsversion=3D4 -e /nfsroot --server 192.168.122.1=
10=0A=
>> --client 192.168.122.109 --trcdelay 10 -v all --createlog --keeptraces=
=0A=
>> --rexeclog recall22 >nfstest-delegationv4-log_recall22 2>&1=0A=
>>=0A=
>> In server run "cat /etc/exports" output is following.=0A=
>> /nfsroot      *(rw,insecure,no_subtree_check,no_root_squash,fsid=3D1)=0A=
>>=0A=
>> best regards,=0A=
>>=0A=
>> On 3/15/23 22:28, Mora, Jorge wrote:=0A=
>>> Hello,=0A=
>>>=0A=
>>> Can you provide a log file for the run?=0A=
>>>=0A=
>>> ./nfstest_delegation -s 192.168.68.86 -e /export -v all --createlog=0A=
>>> --keeptraces --rexeclog recall22=0A=
>>>=0A=
>>> --Jorge=0A=
>>>=0A=
>>> *From: *Jeff Layton <jlayton@kernel.org>=0A=
>>> *Date: *Wednesday, March 15, 2023 at 5:40 AM=0A=
>>> *To: *zhoujie2011@fujitsu.com <zhoujie2011@fujitsu.com>, Mora, Jorge=0A=
>>> <Jorge.Mora@netapp.com>=0A=
>>> *Cc: *linux-nfs <linux-nfs@vger.kernel.org>=0A=
>>> *Subject: *Re: nfstest_delegation test can not stop=0A=
>>>=0A=
>>> NetApp Security WARNING: This is an external email. Do not click links=
=0A=
>>> or open attachments unless you recognize the sender and know the=0A=
>>> content is safe.=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>> On Tue, 2023-03-14 at 02:28 +0000, zhoujie2011@fujitsu.com wrote:=0A=
>>>   > hi,=0A=
>>>   >=0A=
>>>   > I run following test command and stuck at recall12 recall14 recall2=
0=0A=
>>>   > recall22 recall40 recall42 recall48 recall50.=0A=
>>>   >=0A=
>>>   > ./nfstest_delegation --nfsversion=3D4 -e /nfsroot --server <server =
ip>=0A=
>>>   > --client <client2 ip> --trcdelay 10=0A=
>>>   > ./nfstest_delegation --nfsversion=3D4.1 -e /nfsroot --server  <serv=
er=0A=
>>> ip>=0A=
>>>   > --client <client2 ip> --trcdelay 10=0A=
>>>   > ./nfstest_delegation --nfsversion=3D4.2 -e /nfsroot --server  <serv=
er=0A=
>>> ip>=0A=
>>>   > --client <client2 ip> --trcdelay 10=0A=
>>>   >=0A=
>>>   > recall12 recall14 recall20 recall22 recall40 recall42 recall48=0A=
>>> recall50=0A=
>>>   > tests write files after remove.=0A=
>>>   > After comment out above testcases result is:=0A=
>>>   > 646 tests (588 passed, 58 failed)=0A=
>>>   > FAIL: WRITE delegation should be granted=0A=
>>>   >=0A=
>>>   > run ./nfstest_dio have following messages.=0A=
>>>   > INFO: 16:19:51.455222 - WRITE delegations are not available --=0A=
>>> skipping=0A=
>>>   > tests expecting write delegations=0A=
>>>   >=0A=
>>>   > test OS: RHEL9.2 Nightly Build=0A=
>>>   > Why do these testcases can not stop?=0A=
>>>=0A=
>>> Are you asking why these testcases don't pass? If you're testing agains=
t=0A=
>>> the kernel's NFS server then it's because it does not (yet) support=0A=
>>> write delegations.=0A=
>>> --=0A=
>>> Jeff Layton <jlayton@kernel.org>=0A=
>>>=0A=
>>=0A=
>=0A=
> --=0A=
> ------------------------------------------------=0A=
> zhoujie=0A=
> Dept 1=0A=
> No. 6 Wenzhu Road,=0A=
> Nanjing, 210012, China=0A=
> TEL=1B$B!'=1B(B+86+25-86630566-8508=0A=
> FUJITSU INTERNAL=1B$B!'=1B(B7998-8508=0A=
> E-Mail=1B$B!'=1B(Bzhoujie2011@fujitsu.com=0A=
> ------------------------------------------------=0A=
=0A=
--=0A=
------------------------------------------------=0A=
zhoujie=0A=
Dept 1=0A=
No. 6 Wenzhu Road,=0A=
Nanjing, 210012, China=0A=
TEL=1B$B!'=1B(B+86+25-86630566-8508=0A=
FUJITSU INTERNAL=1B$B!'=1B(B7998-8508=0A=
E-Mail=1B$B!'=1B(Bzhoujie2011@fujitsu.com=0A=
------------------------------------------------=0A=