Can't create ISO NFS SR via XOA #1845

hoerup · 2016-12-22T10:26:54Z

When Using XenCenter I have no problem creating a NFS SR pointing to this NFSv3 export 192.168.12.4:/Public

When I try to do the same thing in Xen Orchestra I just get an error:
"Server Detection

unknown error from the peer"

julien-f · 2016-12-22T10:29:35Z

Which version are you using?

olivierlambert · 2016-12-22T10:32:10Z

@hoerup please just enter the host address first (not the path), then click on the "search" icon.

hoerup · 2016-12-22T11:15:39Z

Without path I get this in log:

Dec 22 11:11:14 xotest xo-server[1228]: Thu, 22 Dec 2016 11:11:14 GMT xen-api [email protected]: SR.probe(...) [173ms] =!> XapiError: SR_BACKEND_FAILURE_101(, The request is missing the serverpath parameter, )
Dec 22 11:11:14 xotest xo-server[1228]: Thu, 22 Dec 2016 11:11:14 GMT xo:api [email protected] | sr.probeNfs(...) [177ms] =!> TypeError: Cannot read property 'nfs-exports' of null

But with the path I get this:

Dec 22 11:11:59 xotest xo-server[1228]: Thu, 22 Dec 2016 11:11:59 GMT xen-api [email protected]: SR.probe(...) [151ms] =!> XapiError: SR_BACKEND_FAILURE_140(, Incorrect DNS name, unable to resolve., )
Dec 22 11:11:59 xotest xo-server[1228]: Thu, 22 Dec 2016 11:11:59 GMT xo:api [email protected] | sr.probeNfs(...) [155ms] =!> XapiError: SR_BACKEND_FAILURE_140(, Incorrect DNS name, unable to resolve., )

I'm using
XenServer 7
XOweb 5.5.0, XOserver 5.5.1 from source
nfs host is nfsv3 only

julien-f · 2016-12-22T11:22:33Z

@hoerup you have to enter both the host and the path but in the two different inputs.

hoerup · 2016-12-22T11:27:17Z

Well, there's the problem - I never get more than one input field
https://i.imgur.com/soVgebj.png

julien-f · 2016-12-22T11:30:06Z

My bad, it's normal to have a single input.

The error with the path is normal: you should not put the path in the server input.

We cannot reproduce the other error.

olivierlambert · 2016-12-22T11:39:57Z

@hoerup normally, XenServer should return:

XapiError: SR_BACKEND_FAILURE_101(, The request is missing the serverpath parameter, <?xml version="1.0" ?>
<nfs-exports>
	<Export>
		<Target>192.168.100.42</Target>
		<Path>/srv/nfs</Path>
		<Accesslist>*</Accesslist>
	</Export>
</nfs-exports>

)

In your case, it's like XAPI didn't return a XML with the list of exports.

hoerup · 2016-12-22T14:08:58Z

The target is a Qnap nas running latest QTS(4.2).
Just for fun i tried install nfs server on a debian VM - and here works the XO nfs SR creation as expected

olivierlambert · 2016-12-22T16:27:33Z

An interesting result would be to use xe sr-probe CLI to see the difference about the XML returned between QNAP and Debian.

olivierlambert · 2017-01-02T10:29:13Z

Any news @hoerup ?

I tried to reproduce here, without success :(

olivierlambert · 2017-04-22T13:24:09Z

Closing until we have news on this.

snickson · 2018-04-08T18:55:47Z

Here are the xe CLI outputs:

# xe sr-probe type=nfs device-config:server=192.168.0.15 device-config:serverpath=/ISO
<?xml version="1.0" ?>
<SRlist/>

# rpcinfo -t 192.168.0.15 nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting
program 100003 version 4 ready and waiting

# showmount -e 192.168.0.15
Export list for 192.168.0.15:
/Web
/Public
/ISO
/Download
/Documents
/Development
/Backup

When trying to input the details for an NFS-ISO SR in XOA, I get this:

With the following in the logs: Cannot read property 'nfs-exports' of null | April 8, 2018, 7:21:28 PM

I've just had a thought though, does XO expect the be on the same network? My XO instance is in a cloud VM, and communicating with the XCP-ng server through a firewall (only port 443 and 5900 open).

olivierlambert · 2018-04-08T19:10:17Z

Reopening to see if I can reproduce

olivierlambert · 2018-04-09T12:39:09Z

I can't reproduce here. Can you open a support tunnel that I test it myself in your XOA?

snickson · 2018-04-11T12:38:45Z

I'm using XOA from source, but can deploy the turnkey appliance unless there is a way to open a support tunnel from the source build? I have re-deployed XOA to the same host where I am trying to set up the NFS mount, and getting the same symptoms.

Also found this in the SMLog when trying to search the NFS through the UI:

Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] lock: opening lock file /var/lock/sm/sr
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] lock: acquired /var/lock/sm/sr
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] sr_probe {'subtask_of': 'DummyRef:|46ff88fd-3f51-4fe2-a0c7-35a6641da7e0|SR.probe', 'sr_sm_config': {}, 'args': [], 'host_ref': 'OpaqueRef:b96b28fe-2ac7-4f47-aef5-25701a107508', 'session_ref': 'OpaqueRef:759a3696-fff3-404e-a4fb-7c022cfef939', 'device_config': {'SRmaster': 'true', 'server': '192.168.0.15'}, 'command': 'sr_probe'}
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] _testHost: Testing host/port: 192.168.0.15,2049
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] scanning2 (target=192.168.0.15)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] scanning
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] ['/usr/sbin/showmount', '--no-headers', '-e', '192.168.0.15']
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   pread SUCCESS
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] Raising exception [101, The request is missing the serverpath parameter]
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] lock: released /var/lock/sm/sr
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] ***** generic exception: sr_probe: EXCEPTION <class 'SR.SROSError'>, The request is missing the serverpath parameter
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     return self._run_locked(sr)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     rv = self._run(sr, target)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 332, in _run
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     txt = sr.probe()
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/NFSSR", line 164, in probe
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     self.validate_remotepath(True)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/NFSSR", line 109, in validate_remotepath
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     raise xs_errors.XenError('ConfigServerPathMissing')
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] ***** NFS VHD: EXCEPTION <class 'SR.SROSError'>, The request is missing the serverpath parameter
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 372, in run
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     ret = cmd.run(sr)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     return self._run_locked(sr)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     rv = self._run(sr, target)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/SRCommand.py", line 332, in _run
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     txt = sr.probe()
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/NFSSR", line 164, in probe
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     self.validate_remotepath(True)
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]   File "/opt/xensource/sm/NFSSR", line 109, in validate_remotepath
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]     raise xs_errors.XenError('ConfigServerPathMissing')
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954]
Apr 11 13:36:21 nxnxcp-ng1 SM: [24954] lock: closed /var/lock/sm/sr

olivierlambert · 2018-04-11T13:38:32Z

Please just type the server IP address in the server field, NOT the full path.

edit: hmm it seems you just entered the server address, correct?

snickson · 2018-04-11T13:40:14Z

That error is with just the IP, as per the XOA screenshot above.

olivierlambert · 2018-04-11T13:46:47Z

Please import a XOA, create a support tunnel and then I'll try myself ASAP

snickson · 2018-04-11T14:33:58Z

I'm just importing and upgrading, then I will open a tunnel.

olivierlambert · 2018-04-11T16:01:01Z

So it seems the problem is because the probe request (even on xe) doesn't return anything, eg:

xe sr-probe type=nfs device-config:server=192.168.0.15
Error code: SR_BACKEND_FAILURE_101
Error parameters: , The request is missing the serverpath parameter,

It should be:

xe sr-probe type=nfs device-config:server=192.168.0.15
Error code: SR_BACKEND_FAILURE_101
Error parameters: , The request is missing the serverpath parameter,
<nfs-exports>
	<Export>
		<Target>192.168.0.15</Target>
		<Path>/foo/bar</Path>
		<Accesslist>(everyone)</Accesslist>
	</Export>
</nfs-exports>

olivierlambert · 2018-04-11T16:01:27Z

So not XO related. Closing but still eager to know what could be the root cause :)

aidanwardman · 2018-05-01T12:45:27Z

I also have this issue: "Cannot read property 'nfs-exports' of null" using XO

Yet I can mount the NFS to the same host manually.

Tried both VDI SR NFS and ISO SR NFS ISO

olivierlambert · 2018-05-01T12:46:36Z

This will be fixed in the today's release.

nilsan · 2018-12-13T11:26:12Z

I have this problem running XCP-ng 7.6 with the latest patches, XOA 5.29.1, and a QNAP (TS-873U-RP) with the latest firmware 4.3.5.0760

Log message from Xen Orchestra

sr.probeNfs
{
  "host": "281bbf63-56c4-405e-b3fb-b48f8fc492b7",
  "server": "172.18.9.34"
}
{
  "message": "Cannot read property 'nfs-exports' of null",
  "stack": "TypeError: Cannot read property 'nfs-exports' of null
    at Xo.<anonymous> (/usr/local/lib/node_modules/xo-server/src/api/sr.js:389:26)
    at throw (native)
    at asyncGeneratorStep (/usr/local/lib/node_modules/xo-server/dist/api/sr.js:40:103)
    at _throw (/usr/local/lib/node_modules/xo-server/dist/api/sr.js:42:291)
    at run (/usr/local/lib/node_modules/xo-server-xoa/node_modules/core-js/modules/es6.promise.js:75:22)
    at /usr/local/lib/node_modules/xo-server-xoa/node_modules/core-js/modules/es6.promise.js:92:30
    at flush (/usr/local/lib/node_modules/xo-server-xoa/node_modules/core-js/modules/_microtask.js:18:9)
    at _combinedTickCallback (internal/process/next_tick.js:73:7)
    at process._tickCallback (internal/process/next_tick.js:104:9)"
}

xe sr-probe

[root@vm02 ~]# xe sr-probe type=nfs device-config:server=172.18.9.34
Error code: SR_BACKEND_FAILURE_101
Error parameters: , The request is missing the serverpath parameter,

showmount

[root@vm02 ~]# showmount -e 172.18.9.34
Export list for 172.18.9.34:
/vm      
/Public  
/Web

rpcinfo

[root@vm02 ~]# rpcinfo -t 172.18.9.34 nfs
program 100003 version 4 ready and waiting

manual mount

[root@vm02 ~]# mount -v -t nfs 172.18.9.34:/vm /mnt
mount.nfs: timeout set for Thu Dec 13 12:08:33 2018
mount.nfs: trying text-based options 'vers=4,addr=172.18.9.34,clientaddr=10.187.2.8'
[root@vm02 ~]# df -h /mnt/
Filesystem       Size  Used Avail Use% Mounted on
172.18.9.34:/vm  5.5T   17G  5.5T   1% /mnt
[root@vm02 ~]# mount |grep mnt
172.18.9.34:/vm on /mnt type nfs4 (rw,relatime,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.187.2.8,local_lock=none,addr=172.18.9.34)

olivierlambert · 2018-12-21T09:36:29Z

@nilsan as discussed, it's a XCP-ng/XenServer issue, due to NFS v4 only on the server. Please create the issue here on XCP-ng side: https://github.com/xcp-ng/xcp/issues

nilsan · 2018-12-21T09:38:49Z

I'll create the issue, but the problem is identical on both NFSv3 and NFSv4.

olivierlambert · 2018-12-21T09:41:28Z

I can't reproduce your issue if I have v3 enabled, so let's report what we can reproduce first ;)

kevdogg · 2019-03-07T13:34:33Z

Not to piggyback on the same issue:

xe sr-probe

> # xe sr-probe type=nfs device-config:server=10.0.1.197
> Error code: SR_BACKEND_FAILURE_101
> Error parameters: , The request is missing the serverpath parameter, <?xml version="1.0" ?>
> <nfs-exports>
> 	<Export>
> 		<Target>10.0.1.197</Target>
> 		<Path>/mnt/tank/backups/Xen</Path>
> 		<Accesslist>10.0.1.0</Accesslist>
> 	</Export>
> 	<Export>
> 		<Target>10.0.1.197</Target>
> 		<Path>/mnt/tank/ISO</Path>
> 		<Accesslist>10.0.1.1</Accesslist>
> 	</Export>
> </nfs-exports>

mounts:

# showmount -e 10.0.1.197
Export list for 10.0.1.197:
/mnt/tank/backups/Xen 10.0.1.0
/mnt/tank/ISO         10.0.1.1
/mnt/tank/home/kevdog 10.0.1.1

nfs info

# rpcinfo -t 10.0.1.197 nfs program 100003 version 2 ready and waiting program 100003 version 3 ready and waiting

olivierlambert · 2020-08-27T18:54:06Z

My theory about this: xapi-project/sm#511

Mohitsharma44 · 2020-09-05T08:24:07Z

Another quick way that I was able to reproduce this on a fresh install of xcp-ng 8.1.0 and xen-orchestra (xo-server 5.64.1 and xo-web 5.67.0) is:

Start a simple NFS (v4 +) docker container on a linux host:

modprobe nfs nfsd
mkdir /nfsdata
docker run -d --name nfs --privileged -v /nfsdata:/nfsdata -e SHARED_DIRECTORY=/nfsdata -p 2049:2049 itsthenetwork/nfs-server-alpine:latest

# creating an empty file
touch /nfsdata/foo

exports file in the above container looks like:
/nfsdata *(rw,fsid=0,async,no_subtree_check,no_auth_nlm,insecure,no_root_squash)

output of netstat -ntulp | 2049
tcp6 0 0 :::2049 :::* LISTEN 4972/docker-proxy

Xen-orchestra log when trying to add NFS ISO server:

sr.probeNfs
{
  "host": "e7add5b5-daef-4887-90a6-11ee9449fded",
  "server": "192.168.40.60"
}
{
  "message": "Cannot read property 'nfs-exports' of null",
  "name": "TypeError",
  "stack": "TypeError: Cannot read property 'nfs-exports' of null
    at Object.probeNfs (/home/node/xen-orchestra/packages/xo-server/src/api/sr.js:472:26)
    at runNextTicks (internal/process/task_queues.js:58:5)
    at processImmediate (internal/timers.js:431:9)
    at Api.callApiMethod (/home/node/xen-orchestra/packages/xo-server/src/xo-mixins/api.js:301:20)"
}

From xcp-ng host:

xe sr-probe type=nfs device-config:server=192.168.40.60
Error code: SR_BACKEND_FAILURE_101

rpcinfo -T 192.168.40.60
   program version netid     address                service    owner
    100000    4    tcp6      ::.0.111               portmapper superuser
    100000    3    tcp6      ::.0.111               portmapper superuser
    100000    4    udp6      ::.0.111               portmapper superuser
    100000    3    udp6      ::.0.111               portmapper superuser
    100000    4    tcp       0.0.0.0.0.111          portmapper superuser
    100000    3    tcp       0.0.0.0.0.111          portmapper superuser
    100000    2    tcp       0.0.0.0.0.111          portmapper superuser
    100000    4    udp       0.0.0.0.0.111          portmapper superuser
    100000    3    udp       0.0.0.0.0.111          portmapper superuser
    100000    2    udp       0.0.0.0.0.111          portmapper superuser
    100000    4    local     /var/run/rpcbind.sock  portmapper superuser
    100000    3    local     /var/run/rpcbind.sock  portmapper superuser

# Manually mounting nfsshare works fine.
mkdir /mnt/testnfs
mount -t nfs 192.168.40.60:/ /mnt/testnfs

df -h
Filesystem                                                                                                 Size  Used Avail Use% Mounted on
devtmpfs                                                                                                   805M     0  805M   0% /dev
tmpfs                                                                                                      817M   48K  817M   1% /dev/shm
tmpfs                                                                                                      817M  8.9M  808M   2% /run
tmpfs                                                                                                      817M     0  817M   0% /sys/fs/cgroup
/dev/sda1                                                                                                   18G  1.7G   16G  10% /
xenstore                                                                                                   817M     0  817M   0% /var/lib/xenstored
/dev/sda5                                                                                                  3.9G   29M  3.6G   1% /var/log
/dev/mapper/XSLocalEXT--e890aea2--ff74--921a--a687--8f5e1a2aa04b-e890aea2--ff74--921a--a687--8f5e1a2aa04b   58G   53M   55G   1% /run/sr-mount/e890aea2-ff74-921a-a687-8f5e1a2aa04b
tmpfs                                                                                                      164M     0  164M   0% /run/user/0
192.168.40.60:/                                                                                            7.4G  4.6G  2.4G  66% /mnt/testnfs

# Verify we can see the empty file that was created on nfs server
ls /mnt/testnfs/
foo

olivierlambert · 2020-09-05T08:45:31Z

Can you show the result of xe sr-probe please?

Mohitsharma44 · 2020-09-05T09:01:33Z

Sure, looks like I had partially pasted the output in my previous comment.

xe sr-probe type=nfs device-config:server=192.168.40.60

Error code: SR_BACKEND_FAILURE_101
Error parameters: , The request is missing the serverpath parameter,

olivierlambert · 2020-09-05T09:06:46Z

What about showmount -e 192.168.40.60?

Mohitsharma44 · 2020-09-05T09:09:14Z

showmount -e 192.168.40.60
clnt_create: RPC: Port mapper failure - Unable to receive: errno 111 (Connection refused)

olivierlambert · 2020-09-05T09:11:18Z

So this is not exactly the same issue than the previous one. You should at least got a share list available.

Fix that and then, we'll see the problem with XCP-ng/XO

edit: Google says "Firewall issues", eg https://www.linuxhelp.com/questions/showmount-command-failure

Mohitsharma44 · 2020-09-05T09:18:10Z

Well.. Im using NFS v4 (4, 4.1, 4.2 only) so to secure things a bit more (and since technically I dont need rpcbind and its friends), I didnt have portmapper service running.
Let me have that listening and try again.
Will post an update here..
Thanks!

Mohitsharma44 · 2020-09-05T09:57:58Z

Okay.. looks like if I have rpcbind process running on port 111, XO is able to look up the NFS server.

showmount -e 192.168.40.60
Export list for 192.168.40.60:
/nfsdata *

Above, I was not running rpcbind (since its no longer a requirement for NFSv4) and was using fsid=0 so my only share was "mountable" at the root i.e. at 192.168.40.60:/

I'm not sure (and maybe this is a "feature request") but maybe we should let users specify the path, if they know, instead of defaulting on probing?
My guess is some changes around

xen-orchestra/packages/xo-web/src/xo-app/new/sr/index.js

Line 490 in 2a96197

const paths = await probeSrNfs(host.id, server.value)

(but I could be wrong)

Thanks again!
Cheers!

olivierlambert · 2020-09-05T11:15:28Z

Okay so it works and the original issue with QNAP (not reporting the * you have in showmount) isn't the same.

Regarding your feature request, yes, you can create a new issue for adding a SR with a path directly without doing a probe.

olivierlambert added the status::triaging 🚩 label Jan 2, 2017

olivierlambert closed this as completed Apr 22, 2017

olivierlambert removed the status::triaging 🚩 label Apr 22, 2017

snickson mentioned this issue Apr 6, 2018

Unable to mount NFS ISO store or install supplemental pack xcp-ng/xcp#20

Closed

olivierlambert reopened this Apr 8, 2018

olivierlambert changed the title ~~Can't create NFS SR via XOA~~ Can't create ISO NFS SR via XOA Apr 9, 2018

olivierlambert self-assigned this Apr 9, 2018

olivierlambert added this to the 5.19 milestone Apr 9, 2018

olivierlambert added type: bug 🐛 severity 2: medium labels Apr 9, 2018

olivierlambert closed this as completed Apr 11, 2018

olivierlambert removed this from the 5.19 milestone Apr 11, 2018

olivierlambert added this to the 5.19 milestone May 5, 2018

Can't create ISO NFS SR via XOA #1845

Can't create ISO NFS SR via XOA #1845

Comments

hoerup commented Dec 22, 2016

julien-f commented Dec 22, 2016

olivierlambert commented Dec 22, 2016

hoerup commented Dec 22, 2016 • edited by julien-f Loading

julien-f commented Dec 22, 2016

hoerup commented Dec 22, 2016

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hoerup commented Dec 22, 2016

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snickson commented Apr 11, 2018 • edited Loading

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snickson commented Apr 11, 2018

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olivierlambert commented Apr 11, 2018

olivierlambert commented Apr 11, 2018

aidanwardman commented May 1, 2018

olivierlambert commented May 1, 2018

nilsan commented Dec 13, 2018

Log message from Xen Orchestra

xe sr-probe

showmount

rpcinfo

manual mount

olivierlambert commented Dec 21, 2018

nilsan commented Dec 21, 2018

olivierlambert commented Dec 21, 2018

kevdogg commented Mar 7, 2019 • edited Loading

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hoerup commented Dec 22, 2016 •

edited by julien-f

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