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    xo-server start on Ubuntu 20.04.2 LTS

    Xen Orchestra
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    • K
      k_hamilton
      last edited by marcungeschikts

      Attempting to execute yarn start as a non-root user on Ubuntu 20.04 I'm seeing an issue with the losetup -D command.

      yarn run v1.22.10
$ node dist/cli.mjs
2021-07-31T13:55:23.259Z xo:main INFO Configuration loaded.
2021-07-31T13:55:23.263Z xo:main INFO Web server listening on http://[::]:1024
2021-07-31T13:55:23.356Z xo:mixins:hooks WARN start failure {
  error: Error: Command failed with exit code 1: losetup -D
  losetup: /dev/loop1: detach failed: Permission denied
  losetup: /dev/loop4: detach failed: Permission denied
  losetup: /dev/loop2: detach failed: Permission denied
  losetup: /dev/loop0: detach failed: Permission denied
  losetup: /dev/loop5: detach failed: Permission denied
  losetup: /dev/loop3: detach failed: Permission denied
      at makeError (/home/kevin/xen-orchestra/node_modules/execa/lib/error.js:60:11)
      at handlePromise (/home/kevin/xen-orchestra/node_modules/execa/index.js:118:26) {
    shortMessage: 'Command failed with exit code 1: losetup -D',
    command: 'losetup -D',
    escapedCommand: 'losetup -D',
    exitCode: 1,
    signal: undefined,
    signalDescription: undefined,
    stdout: '',
    stderr: 'losetup: /dev/loop1: detach failed: Permission denied\n' +
      'losetup: /dev/loop4: detach failed: Permission denied\n' +
      'losetup: /dev/loop2: detach failed: Permission denied\n' +
      'losetup: /dev/loop0: detach failed: Permission denied\n' +
      'losetup: /dev/loop5: detach failed: Permission denied\n' +
      'losetup: /dev/loop3: detach failed: Permission denied',
    failed: true,
    timedOut: false,
    isCanceled: false,
    killed: false
  }
}

      And running as root (sudo from my user) starts the server, with a different warning, but I can pull up the web page.

      yarn run v1.22.10
$ node dist/cli.mjs
2021-07-31T14:10:25.783Z xo:main INFO Configuration loaded.
2021-07-31T14:10:25.790Z xo:main INFO Web server listening on http://[::]:1024
2021-07-31T14:10:25.920Z xo:mixins:hooks WARN start failure {
  error: Error: Command failed with exit code 5: vgchange -an
    Logical volume ubuntu-vg/ubuntu-lv contains a filesystem in use.
    Can't deactivate volume group "ubuntu-vg" with 1 open logical volume(s)
      at makeError (/home/kevin/xen-orchestra/node_modules/execa/lib/error.js:60:11)
      at handlePromise (/home/kevin/xen-orchestra/node_modules/execa/index.js:118:26) {
    shortMessage: 'Command failed with exit code 5: vgchange -an',
    command: 'vgchange -an',
    escapedCommand: 'vgchange -an',
    exitCode: 5,
    signal: undefined,
    signalDescription: undefined,
    stdout: '',
    stderr: '  Logical volume ubuntu-vg/ubuntu-lv contains a filesystem in use.\n' +
      `  Can't deactivate volume group "ubuntu-vg" with 1 open logical volume(s)`,
    failed: true,
    timedOut: false,
    isCanceled: false,
    killed: false
  }
}
2021-07-31T14:10:26.097Z xo:main INFO Setting up / → /home/kevin/xen-orchestra/packages/xo-web/dist

      I'm not sure how to resolve this issue.
      (edited to add warning when submitted as root)

      K 1 Reply Last reply Reply Quote 0
      • K
        k_hamilton @k_hamilton
        last edited by

        @k_hamilton this install was built from source, I should have mentioned that.

        1 Reply Last reply Reply Quote 0
        • olivierlambertO
          olivierlambert Vates 🪐 Co-Founder🦸 CEO 🧑‍💼
          last edited by olivierlambert

          Have you tried to change the config to run it as non-root?

          See https://xen-orchestra.com/docs/installation.html#sudo

          K 1 Reply Last reply Reply Quote 0
          • K
            k_hamilton @olivierlambert
            last edited by

            @olivierlambert

            Yes I set usesudo=true and added the following line using visudo:

            # User privilege specification
root    ALL=(ALL:ALL) ALL
kevin   ALL=(root)NOPASSWD: /bin/mount, /bin/umount

            The page still fails to start as a non-root user. It seems to come up when I start it as root.

            kevin@ubuntu-xoa:~/xen-orchestra/packages/xo-server$ yarn start 
yarn run v1.22.10
$ node dist/cli.mjs
2021-07-31T15:31:03.808Z xo:main INFO Configuration loaded.
2021-07-31T15:31:03.815Z xo:main INFO Web server listening on http://[::]:1024
2021-07-31T15:31:03.910Z xo:mixins:hooks WARN start failure {
  error: Error: Command failed with exit code 1: losetup -D
  losetup: /dev/loop1: detach failed: Permission denied
  losetup: /dev/loop4: detach failed: Permission denied
  losetup: /dev/loop2: detach failed: Permission denied
  losetup: /dev/loop0: detach failed: Permission denied
  losetup: /dev/loop5: detach failed: Permission denied
  losetup: /dev/loop3: detach failed: Permission denied
      at makeError (/home/kevin/xen-orchestra/node_modules/execa/lib/error.js:60:11)
      at handlePromise (/home/kevin/xen-orchestra/node_modules/execa/index.js:118:26) {
    shortMessage: 'Command failed with exit code 1: losetup -D',
    command: 'losetup -D',
    escapedCommand: 'losetup -D',
    exitCode: 1,
    signal: undefined,
    signalDescription: undefined,
    stdout: '',
    stderr: 'losetup: /dev/loop1: detach failed: Permission denied\n' +
      'losetup: /dev/loop4: detach failed: Permission denied\n' +
      'losetup: /dev/loop2: detach failed: Permission denied\n' +
      'losetup: /dev/loop0: detach failed: Permission denied\n' +
      'losetup: /dev/loop5: detach failed: Permission denied\n' +
      'losetup: /dev/loop3: detach failed: Permission denied',
    failed: true,
    timedOut: false,
    isCanceled: false,
    killed: false
  }
}
            1 Reply Last reply Reply Quote 0
            • olivierlambertO
              olivierlambert Vates 🪐 Co-Founder🦸 CEO 🧑‍💼
              last edited by olivierlambert

              You need to type sudo before the yarn start command 😉 So sudo yarn start.

              K 1 Reply Last reply Reply Quote 0
              • K
                k_hamilton @olivierlambert
                last edited by

                @olivierlambert

                Is there a difference between "sudo yarn start" with user=username set in the config, and executing yarn start as the ID? I was seeing similar errors either way. It seems like the ID I'm running xo-server as needs more permissions, but I'm not sure what they are.

                I can't figure out why xo-server is looking in "/root/.config/xo-server" for something. Completely acceptable to me if the answer to fix this is, just delete the VM and pull in from a config backup. I realize that building from the sources is mostly unsupported 😃

                kevin@ubuntu-xoa:~/xen-orchestra/packages/xo-server$ sudo yarn start 
yarn run v1.22.10
$ node dist/cli.mjs
2021-07-31T18:18:13.784Z xo:main INFO Configuration loaded.
2021-07-31T18:18:13.790Z xo:main INFO Web server listening on http://[::]:1024
2021-07-31T18:18:13.791Z xo:main INFO User changed to kevin
2021-07-31T18:18:13.887Z xo:mixins:hooks WARN start failure {
  error: Error: Command failed with exit code 1: losetup -D
  losetup: /dev/loop1: detach failed: Permission denied
  losetup: /dev/loop4: detach failed: Permission denied
  losetup: /dev/loop2: detach failed: Permission denied
  losetup: /dev/loop0: detach failed: Permission denied
  losetup: /dev/loop5: detach failed: Permission denied
  losetup: /dev/loop3: detach failed: Permission denied
      at makeError (/home/kevin/xen-orchestra/node_modules/execa/lib/error.js:60:11)
      at handlePromise (/home/kevin/xen-orchestra/node_modules/execa/index.js:118:26) {
    shortMessage: 'Command failed with exit code 1: losetup -D',
    command: 'losetup -D',
    escapedCommand: 'losetup -D',
    exitCode: 1,
    signal: undefined,
    signalDescription: undefined,
    stdout: '',
    stderr: 'losetup: /dev/loop1: detach failed: Permission denied\n' +
      'losetup: /dev/loop4: detach failed: Permission denied\n' +
      'losetup: /dev/loop2: detach failed: Permission denied\n' +
      'losetup: /dev/loop0: detach failed: Permission denied\n' +
      'losetup: /dev/loop5: detach failed: Permission denied\n' +
      'losetup: /dev/loop3: detach failed: Permission denied',
    failed: true,
    timedOut: false,
    isCanceled: false,
    killed: false
  }
}
glob error [Error: EACCES: permission denied, scandir '/root/.config/xo-server'] {
  errno: -13,
  code: 'EACCES',
  syscall: 'scandir',
  path: '/root/.config/xo-server'
}
2021-07-31T18:18:13.903Z xo:mixins:config WARN EACCES: permission denied, scandir '/root/.config/xo-server' {
  error: [Error: EACCES: permission denied, scandir '/root/.config/xo-server'] {
    errno: -13,
    code: 'EACCES',
    syscall: 'scandir',
    path: '/root/.config/xo-server'
  }
}
                julien-fJ 1 Reply Last reply Reply Quote 0
                • olivierlambertO
                  olivierlambert Vates 🪐 Co-Founder🦸 CEO 🧑‍💼
                  last edited by

                  Ping @julien-f

                  1 Reply Last reply Reply Quote 0
                  • julien-fJ
                    julien-f Vates 🪐 Co-Founder🦸 XO Team 🔭 @k_hamilton
                    last edited by

                    @k_hamilton The issue is that XO tries to store some config in ${HOME}/.config/xo-server and the setting user=username does not set the home to the specified user.

                    You can work-around this by explicitly setting the $HOME var when starting xo-server.

                    K 1 Reply Last reply Reply Quote 1
                    • K
                      k_hamilton @julien-f
                      last edited by

                      @julien-f

                      Apologies, I'm not sure how to do that, but it seems easier to run the server as root instead of these workarounds.

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