Comment # 1 on bug 1131931 from heming zhao

There are some comments for the c#0 attached test script.

1. It's better to comment out line 264 "numblks=10485760". If not, we can't use
whole disk size.

2. I use kvm-qemu for test: 4 vcpu, 5G mem, 10GB raw file under virtio mode.

3. it's better to add "exit 0" after line 302. the code area for "Test option
'-T mail'" is not related with this bug.

4. the attachment script will stop before running defragfs.ocfs2. For
triggering the issue, there are two method:
- run the defragfs by manual.
- comment line 298 "exit 100"

5. how to run test script
- ./defragfs_test.sh -d /dev/vdf -m /mnt -n ocfstst -s pcmk -o /tmp
- ./defragfs_test.sh -d /dev/vdf -m /mnt -n ocfstst -s pcmk -o /tmp -b 1024 -c
4096
- ./defragfs_test.sh -d /dev/vdf -m /mnt -n ocfstst -s pcmk -o /tmp -b 1024 -c
8192