Patching XCP-ng via XOA

gthvn1

And if you run the command from pool master for pool master you still have an empty list?

xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update

Maybe this command must be run from pool master (I'll be surprised...)?

rvreugde

@gthvn1

Result for both hosts (xcp-082 gives now a busy-error)

[11:45 xcp-080 ~]# xe host-call-plugin host-uuid=fae5e2cb-a474-4541-8c30-8a5bc87ef945 plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 119, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

[11:46 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 127, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

Danp

https://docs.xcp-ng.org/troubleshooting/common-problems/#the-updater-plugin-is-busy

rvreugde

@Danp @gthvn1
Deleting the lockfile works (had to do it twice). Could it be possible that XOA attempts are also responsible for creating this file?

rm -f /var/lib/xcp-ng-xapi-plugins/updater.py.lock

Result of the command

[12:55 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
[{"url": null, "version": "4.19.19", "name": "kernel", "license": "GPLv2", "changelog": null, "release": "7.0.24.1.xcpng8.2", "size": 31000948, "description": "The Linux kernel"}, {"url": "https://github.com/xapi-project/sm", "version": "2.30.8", "name": "sm", "license": "LGPL", "changelog": null, "release": "13.2.xcpng8.2", "size": 650876, "description": "sm - XCP storage managers"}, {"url": "https://github.com/xenserver/rrdd-plugins/", "version": "1.10.9", "name": "rrdd-plugins", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "17.1.xcpng8.2", "size": 4024592, "description": "RRDD metrics plugins"}, {"url": null, "version": "1.0.2", "name": "vendor-drivers", "license": "GPLv2", "changelog": null, "release": "1.7.xcpng8.2", "size": 3236, "description": "Vendor drivers"}, {"url": "https://xcp-ng.org", "version": "8.2.0", "name": "xcp-ng-deps", "license": "GPLv2", "changelog": null, "release": "13", "size": 10152, "description": "A meta package pulling all needed dependencies for XCP-ng"}, {"url": "https://github.com/xcp-ng/xcp-ng-release", "version": "8.2.1", "name": "xcp-ng-release-presets", "license": "GPLv2", "changelog": null, "release": "14", "size": 11428, "description": "XCP-ng presets file"}, {"url": "https://github.com/xapi-project/xcp-rrdd", "version": "1.33.5", "name": "xcp-rrdd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "3.1.xcpng8.2", "size": 2712836, "description": "Statistics gathering daemon for the xapi toolstack"}, {"url": "https://github.com/xapi-project/sm-cli", "version": "0.23.0", "name": "sm-cli", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "66.1.xcpng8.2", "size": 1217100, "description": "CLI for xapi toolstack storage managers"}, {"url": "https://github.com/xapi-project/message-switch", "version": "1.23.2", "name": "message-switch", "license": "ISC", "changelog": null, "release": "22.1.xcpng8.2", "size": 2386580, "description": "A store and forward message switch"}, {"url": null, "version": "1.3.17", "name": "xenserver-status-report", "license": "GPLv2+", "changelog": null, "release": "1.xcpng8.2", "size": 33092, "description": "A program that generates status reports for a XenServer host"}, {"url": "https://github.com/xenserver/rrd2csv/", "version": "1.2.6", "name": "rrd2csv", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "20.1.xcpng8.2", "size": 2054068, "description": "Tool for converting Xen API RRDs to CSV"}, {"url": "https://github.com/xapi-project/xcp-networkd", "version": "0.56.2", "name": "xcp-networkd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "20.xcpng8.2", "size": 3426224, "description": "Simple host network management service for the xapi toolstack"}, {"url": "https://github.com/xapi-project/vhd-tool", "version": "0.43.0", "name": "vhd-tool", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "23.1.xcpng8.2", "size": 3768904, "description": "Command-line tools for manipulating and streaming .vhd format files"}, {"url": "http://www.openssh.com/portable.html", "version": "7.4p1", "name": "openssh-server", "license": "BSD", "changelog": null, "release": "23.3.1.xcpng8.2", "size": 402980, "description": "An open source SSH server daemon"}, {"url": "https://github.com/xapi-project/xapi-storage", "version": "11.19.0_sxm2", "name": "xapi-storage", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "22.xcpng8.2", "size": 63340, "description": "Xapi storage interface"}, {"url": "https://github.com/xapi-project/varstored-guard", "version": "0.6.2", "name": "varstored-guard", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "20.xcpng8.2", "size": 2340836, "description": "Deprivileged XAPI socket Daemon for EFI variable storage"}, {"url": "http://www.openssh.com/portable.html", "version": "7.4p1", "name": "openssh", "license": "BSD", "changelog": null, "release": "23.3.1.xcpng8.2", "size": 428792, "description": "An open source implementation of SSH protocol versions 1 and 2"}, {"url": "https://www.sudo.ws", "version": "1.9.15", "name": "sudo", "license": "ISC", "changelog": null, "release": "4.1.xcpng8.2", "size": 1301008, "description": "Allows restricted root access for specified users"}, {"url": "https://github.com/xapi-project/xapi-nbd", "version": "1.11.0", "name": "xapi-nbd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "22.1.xcpng8.2", "size": 2086492, "description": "NBD server that exposes XenServer disks"}, {"url": "http://www.kernel.org/", "version": "20190314", "name": "linux-firmware", "license": "GPL, GPLv2, GPLv2+, GPLv3, MIT and Redistributable, no modification permitted", "changelog": null, "release": "11.2.xcpng8.2", "size": 41281672, "description": "Firmware files used by the Linux kernel"}, {"url": "http://www.openssh.com/portable.html", "version": "7.4p1", "name": "openssh-clients", "license": "BSD", "changelog": null, "release": "23.3.1.xcpng8.2", "size": 603784, "description": "An open source SSH client applications"}, {"url": "https://github.com/xenserver/xha", "version": "10.3.1", "name": "xha", "license": "GPLv2", "changelog": null, "release": "3.1.xcpng8.2", "size": 91844, "description": "xha - XenServer proprietary HA daemon"}, {"url": "https://github.com/xapi-project/xenopsd", "version": "0.150.19", "name": "xenopsd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "8.1.xcpng8.2", "size": 85088, "description": "Simple VM manager"}, {"url": "https://github.com/xcp-ng/xcp-ng-release", "version": "8.2.1", "name": "xcp-ng-release", "license": "GPLv2", "changelog": null, "release": "14", "size": 106568, "description": "XCP-ng release file"}, {"url": "https://github.com/xenserver/gpumon", "version": "0.18.0", "name": "gpumon", "license": "ISC", "changelog": null, "release": "23.1.xcpng8.2", "size": 1327416, "description": "RRDD GPU metrics plugin"}, {"url": "http://www.xen.org", "version": "1.249.40", "name": "xapi-xe", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.1.xcpng8.2", "size": 864380, "description": "The xapi toolstack CLI"}, {"url": "https://github.com/xapi-project/forkexecd", "version": "1.18.3", "name": "forkexecd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "15.1.xcpng8.2", "size": 1304412, "description": "A subprocess management service"}, {"url": "https://github.com/xcp-ng/xcp-ng-release", "version": "8.2.1", "name": "xcp-ng-release-config", "license": "GPLv2", "changelog": null, "release": "14", "size": 107020, "description": "XCP-ng configuration"}, {"url": "https://github.com/xapi-project/xenopsd", "version": "0.150.19", "name": "xenopsd-cli", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "8.1.xcpng8.2", "size": 1338280, "description": "CLI for xenopsd, the xapi toolstack domain manager"}, {"url": "https://github.com/xapi-project/wsproxy", "version": "1.12.0", "name": "wsproxy", "license": "LGPL-2.0-only WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "24.xcpng8.2", "size": 616644, "description": "Websockets proxy for VNC traffic"}, {"url": "https://github.com/xapi-project/squeezed", "version": "0.27.0", "name": "squeezed", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "23.1.xcpng8.2", "size": 1227604, "description": "Memory ballooning daemon for the xapi toolstack"}, {"url": "https://github.com/xapi-project/xenopsd", "version": "0.150.19", "name": "xenopsd-xc", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "8.1.xcpng8.2", "size": 4189872, "description": "Xenopsd using xc"}, {"url": "https://github.com/xapi-project/sm", "version": "2.30.8", "name": "sm-rawhba", "license": "LGPL", "changelog": null, "release": "13.2.xcpng8.2", "size": 36932, "description": "rawhba SR type capability"}, {"url": "http://www.xen.org", "version": "1.249.40", "name": "xapi-tests", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.1.xcpng8.2", "size": 4019016, "description": "Toolstack test programs"}, {"url": "http://www.xen.org", "version": "1.249.40", "name": "xapi-core", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.1.xcpng8.2", "size": 19172572, "description": "The xapi toolstack"}, {"url": "https://github.com/xapi-project/xapi-storage-script", "version": "0.34.1", "name": "xapi-storage-script", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "21.1.xcpng8.2", "size": 3643732, "description": "Xapi storage script plugin server"}]

But after the command, the file is not deleted automatically.

[13:50 xcp-080 ~]# ls -alh /var/lib/xcp-ng-xapi-plugins/
total 12K
drwxr-xr-x  2 root root 4,0K Feb 10 12:55 .
drwxr-xr-x 36 root root 4,0K Nov 26 19:34 ..
-rw-r--r--  1 root root   13 Feb 10 13:50 updater.py.lock

gthvn1

In fact on my testing host (xcp-ng 8.3) the file is also there. So it looks like it is normal to not delete it. Can you run the command several times? Because on my host even if the file is not deleted I can run the command several times. So I guess that sometimes a process still holds the file and we need to delete it but most of the time the file is just closed and it works.
EDIT: Oh but in fact it looks like by default the update is run by XO so you will see the file that is updated (time is modified each minute on my host). But I'm discovering this plugin and I'm not sure how it is used...

rvreugde

@gthvn1
FYI: After deleting the file the last time, it reappeared, without having invoked the host-call-plugin command.

13:57 xcp-080 ~]# ls -al /var/lib/xcp-ng-xapi-plugins/
total 12
drwxr-xr-x  2 root root 4096 Feb 10 13:57 .
drwxr-xr-x 36 root root 4096 Nov 26 19:34 ..
-rw-r--r--  1 root root   13 Feb 10 13:57 updater.py.lock

Invoking the command, results every time in:

[14:06 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 127, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

[14:07 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 127, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

[14:10 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 127, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

[14:10 xcp-080 ~]# 
[14:11 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 127, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

[14:11 xcp-080 ~]# xe host-call-plugin host-uuid=20cacce5-ffac-4ace-ac7c-e48f4e6dfc8e plugin=updater.py fn=check_update
Error code: -1
Error parameters: The updater plugin is busy (current operation: check_update), , Traceback (most recent call last):
  File "/etc/xapi.d/plugins/xcpngutils/__init__.py", line 127, in wrapper
    return func(*args, **kwds)
  File "/etc/xapi.d/plugins/updater.py", line 95, in decorator
    with OperationLocker(*pid_args, **pid_kwargs):
  File "/etc/xapi.d/plugins/xcpngutils/filelocker.py", line 55, in __enter__
    self.lock()
  File "/etc/xapi.d/plugins/updater.py", line 55, in lock
    self._raise_busy()
  File "/etc/xapi.d/plugins/updater.py", line 74, in _raise_busy
    raise OperationException('The updater plugin is busy (current operation: {})'.format(op))
OperationException: The updater plugin is busy (current operation: check_update)

rvreugde

@gthvn1
Following process is keeping the file opne (not the manual command). Is it XOA?

14:18 xcp-080 ~]# lsof -t /var/lib/xcp-ng-xapi-plugins/updater.py.lock
15894

[14:19 xcp-080 ~]# ps -ef | grep 15894
root     15894 15893  0 14:15 ?        00:00:00 python /etc/xapi.d/plugins/updater.py <methodCall><methodName>check_update</methodName><params><param><value>OpaqueRef:cfc61ae4-5548-467b-ba63-e06d2572405b</value></param><param><value><struct/></value></param></params></methodCall>

gthvn1

@rvreugde it is really strange... I only have one host on my setup that I'm using for testing and I don't see this behavior... But I see almost every minutes a message in my /var/log/xensource.log saying:
Feb 10 14:55:58 xcp-gthvn1 xapi: [debug||518 HTTPS 10.1.0.100->:::80|host.call_plugin R:dd18d954e8e1|audit] Host.call_plugin host = 'd7f4a210-369a-410e-9c73-4acb59fe5e7c (xcp-gthvn1)'; plugin = 'updater.py' ; fn = 'check_update' args = [ 'hidden' ]
I don't know who is calling this. But for me the file is always released properly. No process that locks the file... Not sure about what to test next. Is there someone on the forum with the same issue?

rvreugde

@gthvn1

It seems to be working on another pool, but, how can we get this working in XOA?

XOA:

CLI:

[07:38 xcp-102 ~]# xe host-call-plugin host-uuid=a0d83751-159a-4f0b-8618-4984d543f0c8 plugin=updater.py fn=check_update
[{"url": "http://www.xen.org", "version": "24.19.2", "name": "xcp-networkd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 4647492, "description": "Simple host network management service for the xapi toolstack"}, {"url": "https://github.com/xapi-project/sm", "version": "3.2.3", "name": "sm-fairlock", "license": "LGPL", "changelog": null, "release": "1.15.xcpng8.3", "size": 42552, "description": "Fair locking subsystem"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "forkexecd", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 2361328, "description": "A subprocess management service"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "sm-cli", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 1787364, "description": "CLI for xapi toolstack storage managers"}, {"url": null, "version": "4.19.19", "name": "kernel", "license": "GPLv2", "changelog": null, "release": "8.0.37.1.xcpng8.3", "size": 30911672, "description": "The Linux kernel"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "xapi-storage-script", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 4589220, "description": "Xapi storage script plugin server"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "xapi-xe", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 1369152, "description": "The xapi toolstack CLI"}, {"url": "https://www.jedsoft.org/slang/", "version": "2.3.2", "name": "slang", "license": "GPLv2+", "changelog": null, "release": "11.xcpng8.3", "size": 367944, "description": "Shared library for the S-Lang extension language"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "xenopsd-xc", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 5163268, "description": "Xenopsd using xc"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git", "version": "20240503", "name": "amd-microcode", "license": "Redistributable", "changelog": null, "release": "1.1.xcpng8.3", "size": 96912, "description": "AMD Microcode"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "xapi-rrd2csv", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 2924652, "description": "A tool to output RRD values in CSV format"}, {"url": "http://www.xen.org", "version": "24.19.2", "name": "xenopsd-cli", "license": "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception", "changelog": null, "release": "1.9.xcpng8.3", "size": 1879780, "description": "CLI for xenopsd, the xapi toolstack domain manager"}, {"url": 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gthvn1

@olivierlambert do you know who on XOA side can have a look?