Messages in this thread | | | Date | Sun, 29 Jun 2003 14:31:08 -0400 | From | rmoser <> | Subject | Re: File System conversion -- ideas |
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On 6/29/2003 at 8:50 AM David D. Hagood wrote:
>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. >
Ass yourself for hours, each time risking making a typo and killing both filesystems, or risking having the LVM resize die from a powerdrop or a kick to the power button (sorry we don't all have immortal fault tolerance). I actually though about this one and figured it was too rediculously annoying to actually bring up :-p
> >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. >
I've never used LVM, but I'll look at it one day. If it's stable, that's good; I don't use Windows. I don't know exactly what LVM is but I have a pretty good idea; it's been forever since I read the doc on it, I forgot what it said!
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--Bluefox Icy
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