Reindl Harald wrote:
Am 20.01.2013 02:00, schrieb Ranjan Maitra:
Thanks again for your quick response.
OK, so you are suggesting I move to lvm, or leave things as is, to ext4?
The new installer does not give me an option to format ext4 (but I can
keep it as is, I guess).
How does one convert from ext4 to lvm? Is there any benefit to moving
to lvm?
you should really read some basic documentations
ext4 is a filesystem
btrfs is a filesystem
lvm is NOT a filesystem
you have ext4, btrfs, whatever FS ON TOP of LVM
http://en.wikipedia.org/wiki/Logical_volume_management
for most private environments there is no real benefit of LVM
spread LVM over more than one disk with no RAID under it
is simply dumb becasue if ONE of the disks goes down
you have a problem
Your point about loss of data is well taken, but having data on any storage
without RAID for error recovery is a risk, having data on just one machine is a
risk. The admin has to balance cost and benefit, for both hardware and
administrative learning curve considered as "cost." The benefit of LVM is being
able to easily move data to other physical devices and expand the size of
storage. LVM can do RAID by itself, although I have always created arrays with
mdadm because I'm most familiar with doing it that way.
Note that the user interface to LVM, bad as it is, is still much easier to
master than adding drives to a RAID array and growing filesystems. In my
opinion,the fewer commands you need to use the less likely you are to make a
mistake.
While there are unusual use cases in which btrfs is significantly faster than
ext4, and btrfs provides some capabilities not in ext4, most users will see
little benefit from it. The problems btrfs was created to address are not common.
--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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