Re: partition table numberings
Ritesh Raj Sarraf <rrs@researchut.com> writes:
> This is fabulous. But I don't think it's much feasible in case of a
> notebook and I posted the problem keeping my notebook in mind. Will
> using LVM on a notebook, which will always have just one singe disk,
> give any benefit ?
Yes, it will. I've probably expressed it somewhat unclearly. Even
with one disk you don't need any partitioning (except if you use also
Windows in which case you make partitions for Windows as usual, and
only one partition for Linux LVM). The one Linux LVM partition
contains all of your logical volumes (LV) which hold file systems,
swap space of whatever else you would put to partitions. You can
resize, create, and delelte locigal volumes *much* easier than
partitions, without moving, without any renumbering of partition
numers, without rebooting.
On my system it looks like this:
janus:urs$ df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/vg0/root 126931 107678 12700 90% /
/dev/sda1 54416 4696 46911 10% /boot
/dev/vg0/var 507748 400756 106992 79% /var
/dev/vg0/news 2014611 1804138 210473 90% /var/spool/news
/dev/vg0/usr 2579707 2166277 282358 89% /usr
/dev/vg0/local 515940 488020 6949 99% /usr/local
/dev/vg0/ftp 1031880 753735 278145 74% /usr/local/ftp
/dev/vg0/opt 253871 50039 193347 21% /opt
/dev/vg0/home 8254992 7789756 129692 99% /home
/dev/vg0/galois 63461 31211 28974 52% /tftpboot/galois
/dev/vg0/tux 63461 18065 42120 31% /tftpboot/tux
/dev/vg0/tuxbox 126931 66055 54323 55% /tftpboot/tuxbox
tmpfs 452936 308 452628 1% /tmp
/dev/vg0/old 63461 52398 8442 87% /OLD
janus:urs$ swapon -s
Filename Type Size Used Priority
/dev/vg0/swap partition 262136 3980 -2
/boot is required on sda1, since lilo don't know about LVM.
Everything else is in sda2 which is a LVM physical volume.
This is really useful, even if you have only one disk.
LVM has *additional* advantages when you have multiple disks. You can
then stripe a file system across several disks for performance, and
have file systems larger than any one of your disks by combining the
space of all disks into one volume group.
urs
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