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, >> >> >> >> 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. >> > --------------------------------------------------- >> > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org >> > To subscribe, unsubscribe, or to change your mail settings: >> > https://lists.phxlinux.org/mailman/listinfo/plug-discuss >> --------------------------------------------------- >> PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org >> To subscribe, unsubscribe, or to change your mail settings: >> https://lists.phxlinux.org/mailman/listinfo/plug-discuss > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > https://lists.phxlinux.org/mailman/listinfo/plug-discuss -- A mouse trap, placed on top of your alarm clock, will prevent you from rolling over and going back to sleep after you hit the snooze button. Stephen