Extend Inode Block

Marcos Matsunaga, Feb 09 2007.

Problem:

The df output shows that a specific partition has enough space to create files, but when trying to create them, it fails with the message "No space left on device.".

Reason:

The partition ran out of inode blocks and can't allocate a new one, since there is not enough contiguous bits available.

Solution:

Create a script that does:

• Using debugfs.ocfs2, find out the device blocksize and clustersize.
• Compute the number of contiguous bits that are necessary to allocate a new block.
• Using debugfs.ocfs2, find out what files on that specific partition have the number of contiguous bits that can be removed to free up space.
• Let the user select which file to be removed.
• Remove the chosen file and touch two new files in the partition so that OCFS2 can allocate the new inode block.