Messages in this thread | | | Date | Sun, 29 Jun 2003 08:50:59 -0500 | From | "David D. Hagood" <> | Subject | Re: File System conversion -- ideas |
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This is a place where logical volume management can help.
For example, suppose you have a 60G disk, 55G of data, in ext2, and you wish to convert to ReiserFS.
Step 1: Shrink the volume to 55G. This requires a "shrink disk" utility for the source file system (which exists for the major file systems in use today). Step 2: Create an LVM block in the remaining 5G. Step 3: Create a ReiserFS in the LVM block. Step 4: Move 5G of data from the ext2 system to the ReiserFS block. Step 5: Shrink the ext2 volume by another 5G Step 6: Convert that 5G into an LVM block Step 7: Add that block to the ReiserFS volume group. Step 8: Grow the ReiserFS. Step 9: Repeat 4-8 as needed.
This is why I'd really love to see LVM|EVM become standard, not just in the kernel but in the distributions - if every distro by default made all Linux volumes in LVM, then migrating data to bigger drives/adding more space/converting file systems would be so much easier.
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