VirtualBox

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Ticket Resolution Summary Owner Reporter
#8409 obsolete Unable to allocate and lock memory Sylvain Ragab
Description

Memory used by a guest operating system (With Ubuntu & W7) reaches about 2’750GB (regardless of the amount of memory configured), the virtual machine will crash with a errorID=HostMemoryLow message="Unable to allocate and lock memory' error even if there is free memory available on the host.

#2264 fixed Shared My Documents folder not writable by non-root Linux guest srackham
Description

Host: Windows XP Pro SP2, Guest: Xubuntu 8.04

Non-root users can't write to a shared Windows 'My Documents' folder regardless of the 'uid' and 'gid'. Here's a transcript that illustrates the problem (the shared folder named mydocs shares the C:\Documents and Settings\srackham\My Documents folder and the logged on Xubuntu user is 'srackham'):


$ ls -ld shared/
drwxr-xr-x 2 srackham srackham 4096 2008-09-18 07:59 shared/

$ sudo mount -t vboxsf -o uid=srackham,gid=srackham mydocs shared

$ ls -ld shared/
dr-xr-xr-x 1 srackham srackham 0 2008-09-18 10:15 shared/

$ touch shared/t
touch: cannot touch `shared/t': Permission denied

$ sudo touch shared/t

$ ls shared/t
shared/t


Note how the user write bit on the mounted directory has been turned off so the user can't write but root can.

The problem seems to be related to the special properties imbued in the 'My Documents' folder by Windows. Same applies to the Windows 'Shared Documents' folder (`C:\Documents and Settings\All Users\Documents`).

#2265 invalid Directory names clash with shared folder names srackham
Description

If you have a folder in the same directory as your mount directory that has the same name as the VirtualBox shared folder name you will get a 'mounting failed with the error: Protocol error' error. Here's a transcript that illustrates the problem -- the first mount works fine, but the second (after creating a directory with the same name as the shared folder) fails:


$ ls -l
total 4
drwxr-xr-x 2 srackham srackham 4096 2008-09-18 17:10 shared

$ sudo mount -t vboxsf -o uid=srackham,gid=srackham host shared/

$ mount -t vboxsf
host on shared/ type vboxsf (uid=1001,gid=1001,rw)

$ sudo umount shared/

$ mkdir host

$ ls -l
total 4
drwxr-xr-x 2 srackham srackham 4096 2008-09-18 17:14 host
drwxrwxrwx 1 srackham srackham 0 2008-09-18 10:16 shared

$ sudo mount -t vboxsf -o uid=srackham,gid=srackham host shared/
/sbin/mount.vboxsf: mounting failed with the error: Protocol error


I don't know if this is the right place for unsolicited praise but a big thank you to everyone involved for this absolutely amazing piece of software.

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