[Bug 911529] Re: e4defrag doesn't make an optimized defragmentation

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: e2fsprogs (Ubuntu)
       Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to e2fsprogs in Ubuntu.
https://bugs.launchpad.net/bugs/911529

Title:
  e4defrag doesn't make an optimized defragmentation

Status in “e2fsprogs” package in Ubuntu:
  Confirmed

Bug description:
  I'm using Ubuntu 12.04 dev with e2fsprogs
  1.42~WIP-2011-10-16-1ubuntu1. I wanted to defragment a big file (~9
  GB) but sometimes e4defrag does nothing because it thinks the file is
  optimized and a few seconds later it defragments the file and is
  reducing the most times the extents of this file. Here is an example:

  Command: e4defrag -v '/virtualbox/VirtualBox VMs/Ubuntu 32 Bit/Ubuntu 32 Bit.vdi'
  Result: [1/1]/virtualbox/VirtualBox VMs/Ubuntu 32 Bit/Ubuntu 32 Bit.vdi:	100%  extents: 71 -> 71	[ OK ]

  The file was'nt defragmented and directly after this I used the same
  command again and got:

  [1/1]/virtualbox/VirtualBox VMs/Ubuntu 32 Bit/Ubuntu 32 Bit.vdi:
  100%  extents: 71 -> 69 [ OK ]

  The file was now defragmented. I tried the command again:

  [1/1]/virtualbox/VirtualBox VMs/Ubuntu 32 Bit/Ubuntu 32 Bit.vdi:
  100%  extents: 69 -> 69 [ OK ]

  The file wasn't defragmented but on the next try:

  [1/1]/virtualbox/VirtualBox VMs/Ubuntu 32 Bit/Ubuntu 32 Bit.vdi:
  100%  extents: 69 -> 68 [ OK ]

  The file was defragmented and the behaviour on the last try was a
  little different:

  [1/1]/virtualbox/VirtualBox VMs/Ubuntu 32 Bit/Ubuntu 32 Bit.vdi:
  100%  extents: 68 -> 68 [ OK ]

  The extents wasn't reduced but the file was defragmented which needed
  some minutes. I don't know why e4defrag is sometimes defragmenting an
  already previously defragmented file and sometimes not. And why aren't
  the extents reduced to the minimum size possible on the first try?

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/911529/+subscriptions