file size errors on ext3 shared folder

[tsr]

My virtualbox_1.6.4-33808_Ubuntu_gutsy_i386.deb sometimes sets the size of files in a shared folder incorrectly. When it happens they appear much bigger (on the host as well as the guest) than they actually are. When i "look" at these files they seem to have the null character appended countless times, but they dont seem to actually occupy the additional diskspace.

The problem occurs with torrent downloads, so the data is written directly into the shared folder chunk by chunk as its being downloaded. It does not happen to all files. Host&Guest are Ubuntu 7.10. The shared folder is mounted like this in the fstab:

fls /media/files vboxsf rw,uid=user 0 0

I have just noticed that the logfile becomes quite big (~450mb for 2 days uptime). Maybe i should also mention that the hosts cpu is often maxed out.

These are the tailing lines of a log:

---

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7e036f8

remR3NotifyTrap: uTrap=ff error=0 next_eip=00000002 eip=00000000 cr2=b7eb4580

remR3NotifyTrap: uTrap=d error=7fa next_eip=00000000 eip=00000000 cr2=b7eb4580

remR3NotifyTrap: uTrap=ff error=0 next_eip=00000002 eip=00000000 cr2=b7eb4580

remR3NotifyTrap: uTrap=d error=7fa next_eip=00000000 eip=00000000 cr2=b7eb4580

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7e036f8

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7e036f8

remR3NotifyTrap: uTrap=ef error=0 next_eip=00000000 eip=c02f60c9 cr2=b7e036f8

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7e036f8

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7e036f8

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7de46f8

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7de46f8

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7de46f8

remR3NotifyTrap: uTrap=7 error=0 next_eip=08048e00 eip=08048e00 cr2=b7f7f451

remR3NotifyTrap: uTrap=e error=3 next_eip=c01feac2 eip=c01feac2 cr2=b7de46f8

---

I'm posting this bug report after having posted this on the forum earlier: ​http://forums.virtualbox.org/viewtopic.php?t=8534

[tsr]

It just came into my mind: the guest additions running on the guest are older than 1.6.4, but i don't know how to determine their version (?).

[Frank Mehnert]

These strange log entries are a bug of 1.6.4 which will be fixed with 1.6.6. To disable these strange log files add VBOX_LOG_DEST=nofile to the environment of your host.

Regarding your problem: The guest additions print their version to the kernel log so use 'dmesg' inside your guest to determine this version. Upgrade the additions to 1.6.4 if possible. If you observe this problem anyway, does the file size look equal from the host and from the guest?

[tsr]

The guest additions were 1.5.6. They are updated now and i'll report back in a couple of days or as soon as the problem occurs again. Yes, the file size is equal, and the files do not seem to be corrupt otherwise (from either end).

[tsr]

the problem has NOT occured again so far, and i think i waited long enough. so im sorry for not having thought about the guest additions earlier. im pretty sure they fixed it.