Nilfs is a LFS that NTT(Nippon Telegraph and Telephone Corp.) Group distributed to the Linux world.
It has been merged into Linux mainline 2.6.30 rc-1
Below is the tutorial of how to set up a LFS partition in a VMware VM.
1. Attach multiple virtual disks to the VM in VMware
Editing virutal machine settings -> add -> add a hard disk
2. Install a CentOS5.1 distro in the VM and run the more than 260 updates
(It is said CentOS5.1/5.2 are both OK. But CentOS5.0 needs to be patched.)
root : centos
3. Download the NilFS kmod and utils rpms from nilfs.org site.
i386 utilities package: http://www.nilfs.org/pub/centos/5/RPMS/i386/
i386 kernel module package: http://www.nilfs.org/pub/centos/5/RPMS/i686/
Look for the nilfs utilities : nilfs-utils-2.0.12-1.i386.rpm
Look for the exact kernel version 2.8.18_128 : kmod-nilfs-2.0.12-2.2.6.18_128.1.6.el5.i686.rpm
the utilities and the kernel module version should match the same nilfs version and also the centos kernel version.
(It also includes PAE and Xen rpm packages in the same directory)
4. Install the NilFS rpm package
root: ~>rpm -Uvh kmod-nilfs-2.0.12-2.6.18_128.1.6.el5.i686.rpm
5. Format the virtual disk as nilFS and mount to the system.
(The extra disk is /dev/hda)
Format the disk by mkfs command
root: ~>mkfs -t nilfs2 /dev/hda
mount the LFS disk by mount command
root: ~>mount -t nilfs2 /dev/hda /root/nilfs
6. Use the nilFS to recover the data
Before you make some changes, you can set a checkpoint by mkcp
root: ~>mkcp
root: ~>lscp (lscp will show what checkpoints you have)
After you make the changes, you sjhould make the previous checkpoint to be a snapshot and then mount that previous snapshot to a new spot
root: ~>chcp ss 5
root: ~>mount -t nilfs2 -r -0 cp=5 /dev/hda /root/nilfs-cp
nilfs.org website instructions are at the link http://www.nilfs.org/en/about_nilfs.html (how to use nilfs --incomplete)
7. Umount nilFS disk
root: ~>umount /root/nilfs-cp
root: ~>umount /root/nilfs
Next --> Setup NilFS in a Xen Guest
