I am also having the same "Invalid argument" error with 'ubuntu/focal64' version '20210803.0.0' when doing vagrant up. Manually running the mount command from inside the guest machine brings the same error. The host machine (also Ubuntu focal64) is running vagrant 2.2.18 and Virtualbox 6.1.22 I did note in the guest machine dmesg (see below), that it shows version 6.1.16_Ubuntu for vboxsf but VBoxService is version 6.1.22_Ubuntu. I
Output from vagrant up: Mounting shared folders... /vagrant => /home/xx/checkout Vagrant was unable to mount VirtualBox shared folders. This is usually because the filesystem "vboxsf" is not available. This filesystem is made available via the VirtualBox Guest Additions and kernel module. Please verify that these guest additions are properly installed in the guest. This is not a bug in Vagrant and is usually caused by a faulty Vagrant box. For context, the command attempted was: mount -t vboxsf -o uid=1000,gid=1000,_netdev vagrant /vagrant The error output from the command was: /sbin/mount.vboxsf: mounting failed with the error: Invalid argument dmesg output: [ 9.581826] vboxsf: g_fHostFeatures=0x8000000f g_fSfFeatures=0x1 g_uSfLastFunction=29 [ 9.581876] vboxsf: Successfully loaded version 6.1.16_Ubuntu [ 9.581890] vboxsf: Successfully loaded version 6.1.16_Ubuntu on 5.4.0-80-generic SMP mod_unload modversions (LINUX_VERSION_CODE=0x5047c) [ 9.624089] 23:59:13.455579 main VBoxService 6.1.22_Ubuntu r144080 (verbosity: 0) linux.amd64 (Jun 22 2021 07:15:58) release log 23:59:13.455582 main Log opened 2021-08-07T23:59:13.455569000Z [ 9.624130] 23:59:13.455666 main OS Product: Linux [ 9.624149] 23:59:13.455687 main OS Release: 5.4.0-80-generic [ 9.624163] 23:59:13.455705 main OS Version: #90-Ubuntu SMP Fri Jul 9 22:49:44 UTC 2021 [ 9.624185] 23:59:13.455719 main Executable: /usr/sbin/VBoxService 23:59:13.455719 main Process ID: 679 23:59:13.455720 main Package type: LINUX_64BITS_GENERIC (OSE) [ 9.628306] 23:59:13.459819 main 6.1.22_Ubuntu r144080 started. Verbose level = 0 [ 9.630916] 23:59:13.462430 main vbglR3GuestCtrlDetectPeekGetCancelSupport: Supported (#1) [ 16.847539] vboxsf: Invalid info signature: 0x75 0x69 0x64 0x3d! [ 16.847543] vbsf_read_super_aux err=-22 [ 16.939693] vboxsf: Invalid info signature: 0x75 0x69 0x64 0x3d! [ 16.939697] vbsf_read_super_aux err=-22 [ 22.079670] vboxsf: Invalid info signature: 0x75 0x69 0x64 0x3d! [ 22.079674] vbsf_read_super_aux err=-22 [ 27.219309] vboxsf: Invalid info signature: 0x75 0x69 0x64 0x3d! [ 27.219313] vbsf_read_super_aux err=-22 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873506 Title: ubuntu/focal64 fails to mount Vagrant shared folders To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-images/+bug/1873506/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs