I will +1 LVM as well. on top of the above, the LVM caching is pretty slick
as well.
And so far zfs is also very interesting.
On Mon, May 31, 2021 at 2:46 PM Michael Butash via PLUG-discuss <
plug-discuss@lists.phxlinux.org> wrote:
> I would disagree there is little benefit to using lvm with a single disk,
> unless you only use it as a raid mechanism, which I don't. Otherwise, I
> tend to compartmentalize my os for root, var, var/log, home, usr, and
> others, but occasionally I need to grow them over time, even adding another
> disparate disk to the system. LVM lets me do this where I cannot with a
> base ext partition. Also filling a bare root ext partition tends to fsck
> up the os royally, sometimes fsck is help in recovering, or not. Never had
> this again switching to using lvm for everything.
>
> Last time I built my laptop with arch, I was bent on using ZFS, but arch
> and maybe linux in general couldn't boot off an encrypted volume still.
> BTRFS not sure currently, but it always seems a bit sketchy anyways. Years
> later, I'd love to know if this works yet.
>
> End of the day, I need 1) raid, 2) encryption, 3) volume
> management/scaling, and 4) ssd features to keep them alive. I use only
> samsung disks that tend to do their own auto-leveling as I have found other
> SSD's entirely unreliable when layering said requirements currently with
> mdraid/luks/lvm/ext. Samsung seems to nail it for longevity, though my
> laptop currently uses only a single toshiba m2 ssd and has been working
> fine for almost 5 years. Maybe *other* vendors have finally copied them,
> but I simply don't even consider non-samsung drives these days.
>
> ZFS seems the long-term ideal to replace mdraid/luks/lvm/ext all in one,
> maybe BTRFS, but curious if anyone's figured it out yet. Probably wait for
> a new desktop/laptop to try this.
>
> -mb
>
>
> On Mon, May 31, 2021 at 8:27 AM Keith Smith via PLUG-discuss <
> plug-discuss@lists.phxlinux.org> wrote:
>
>>
>> Thanks Michael and Matt,
>>
>> <scroll>
>>
>> On 2021-05-27 17:33, Matt Graham via PLUG-discuss wrote:
>> > On 2021-05-26 17:32, Michael Butash via PLUG-discuss wrote:
>> >> On Wed, May 26, 2021 at 2:24 PM Keith Smith via PLUG-discuss
>> >>> I am running a 250GB SSD. It will be entirely dedicated to the
>> >>> server.
>> >>> In reading the docs there is an option of using the entire disk for
>> >>> LVM
>> >>> and there will be two partitions, one for /boot and one for
>> >>> everything
>> >>> else.
>> >
>> > This is overkill unless you're going to be adding another disk at some
>> > point or constantly making and destroying LVs. With a disk that
>> > small, it'd be totally fine to have an EFI partition of about 256M and
>> > a / partition taking up the rest of the space.
>> >
>> >> I run everything through LVM after about the second time I crashed my
>> >> root partition on plain ext2 by filling it entirely, at least probably
>> >> 10-12 years now. LVM2 doesn't crash it like that even if filled, or
>> >> cause a full fsck of fscking time and other weird catastrophic
>> >
>> > ext3 was in the vanilla kernel in Nov. 2001 and rapidly became
>> > available and really well-tested. SuSE was heavily pushing ReiserFS,
>> > so I was using that for a while, but I went ext3 in 2004 or 2005.
>> > ext2 in 2009?
>> >
>> >> I'd love to hear reasons not to use lvm, as it's dated,
>> >
>> > You hear "dated", I hear "has had a lot of people banging on it for a
>> > long time, so all the major and most of the minor bugs are fixed".
>> > The main reason not to use LVM is dual booting, as nothing but Linux
>> > can read LVM. With things like laptops, where you've usually only got
>> > 1 disk, there's little benefit to LVM.
>>
>> I am running a single disk for now. I have two spinners however I
>> replaced them with an SSD.
>>
>> I think the default install is LVM.
>>
>> You say "where you've usually only got 1 disk, there's little benefit to
>> LVM." Please expand on that a little more.
>>
>> >
>> >> and looked at things like zfs and btrfs to replace 1)
>> >> raid, 2) encryption. and 3) logical volumes, but without these all
>> >> wasn't really an option. Curious if anyone's using any one native
>> >> solution for all three yet. Using mdraid+luks+lvm+ext4 is still my
>> >> general go-to.
>> >
>> > btrfs and zfs try to do too much in the same place and suffer for it.
>> > md has proven itself in the field, and LVM is filesystem-agnostic so
>> > if you want to run something other than ext4, you could.
>> >
>> > --
>> > Crow202 Blog: http://crow202.org/wordpress
>> > There is no Darkness in Eternity
>> > But only Light too dim for us to see.
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