Op maandag 21 februari 2011 10:36:15 schreef Thierry Vignaud: > On 21 February 2011 08:51, P. Christeas <p_chr...@hol.gr> wrote: > >> What do you think about switching from defaulting to installing on raw > >> partitions to lvm > >> installing on LVs like fedora does ? > > > > I vote against that. (=to be enabled by default) > > > > LVM is fine for "enterprise" setups, or better, installations where the > > (expert) admin will need to resize/move partitions in the future. But, > > for simple machines/users, the complexity of having LVM is IMHO not > > worth it. > > > > (remember also that on all *nix OSes, you can just add a partition, move > > some files like /usr/share/doc into it and then mount it on > > /usr/share/doc, thus freeing /usr of some space. No LVM, no > > virtualization, no ZFS required) > > It's not as easy as LVM (need to use a partitionner). > Diskdrake and the like will force you to umount the partitions to resize > which may needs to boot on a rescue CD (eg for resizing / fs) > It may not be possible ie: > > - you already have 4 primary partitions and none of them is an extended > one. > > - If you've a small 8Go partition at start of the disk followed by one > To partition > and you want to increase the first one, you're screwed without LVM > With LVM, you can just got some free space from anywhere (even another > disk) > > What's more, one gains many features: > > - snapshots (yes snapshots for sql db backups are not for end users) but > still usefull for saving the whole system at one fixed time > > - you can extend some filesystems from space from other disks > > - it's easier to add space where needed when defaults partitions sizing > proved to be altered after some usage > > - one can live resize (w/o umouting/remounting) > > - one can use snapshots in order to rollback dangerous update > (eg: for trying initscript -> systemd switch, ...) > > I think it brings many usefull features. > Those who don't want LVM could still do manual partitionning.
if we switch from ext4 to btrfs next year or so, we will have snapshotting and a lot of other usefull features.