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I have Ubuntu 12.04 running on VirtualBox 4.2.4 in a Dynamic VDI disk with the limit set to 8gb on a real ext4 partition with more than 40gb of empty room available. However, the VDI it does not expand to the limit. 8gb is more than enough for what I want to do.

How do I make the rest of the space available? Available space in / and .home is 41kb.

vm

vdi

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Is this a bug then? – jeremyjjbrown Nov 19 '12 at 1:59

migrated from serverfault.com Nov 19 '12 at 13:41

2 Answers

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/tmp is going to be a tmpfs - i.e. a filesystem stored in RAM. So unless you assigned you have ~800MB free RAM in your VM, it isn't going to be enough to hold the ISO.

This is probably not what you intended: just save the ISO in a 'real' directory (e.g. /home/<username>) and it should work just fine.

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So if I am trying to load 1+GB of files into MongoDB and the VM memory is set to 1024 is it likely that I would be running into the same issue? – jeremyjjbrown Nov 19 '12 at 0:22
Where is the file stored? If it's disk-backed, then no - MongoDB should read the file in chunks and load it rather than loading the entire file at once. By storing your ISO in /tmp, you're forcing the OS to store the entire ISO in memory. – Jay Nov 19 '12 at 0:24
dbpath=/var/lib/mongodb I'm getting the computer is running out of disk space message from the OS. Apparently, my image was misleading. – jeremyjjbrown Nov 19 '12 at 0:26
up vote 1 down vote

It doesn't seem to be related to the growth of your virtual disk as you should have an error message from VirtualBox telling you that it can't allocate more disk space for your virtual disk.

Some ideas:

  • Did you use a special partitionning scheme in your VM?
  • What's the result of df -h in your VM?
  • You may use baobab to search what consumes all your / space.
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+1 for baobab. Although it did not tell me why the vdi won't grow it's going to be useful in the future. – jeremyjjbrown Nov 22 '12 at 1:02
Thanks. From what I can tell, your vdi don't grow because the OS inside don't need it to grow. I mean, surely your /tmp or even / filesystem is full in your VM. The filesystem won't expand by itself. What df -h tells you? – Christophe Drevet Nov 22 '12 at 7:09

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