[PVE-User] How to use lvm on zfs ?
denis.morejon at etecsa.cu
Wed Aug 8 15:32:48 CEST 2018
Why does Proxmox team have not incorporated a software Raid in the
install process ? So that we could include redundancy and lvm advantages
when using local disks.
El 08/08/18 a las 09:23, Denis Morejon escribió:
> El 07/08/18 a las 17:51, Yannis Milios escribió:
>>> (zfs create -V 100G rpool/lvm) and make that a PV (pvcreate
>>>>> /dev/zvol/rpool/lvm) and make a VG (vgcreate pve /dev/zvol/rpool/lvm)
>>>>> and then a LV (lvcreate -L100% pve/data)
>> Try the above as it was suggested to you ...
>>>> But I suspect I have no space to create an
>>>>> additional zfs volume since the one mounted on "/" occupied all
>>>>> the space
>> No, that's a wrong assumption, zfs does not pre-allocate the whole
>> space of
>> the pool, even if looks like it does so. In short there is no need to
>> "shrink" the pool in order to create a zvol as it was suggested above...
>> Still, the whole idea of having LVM ontop of ZFS/zvol is a mess, but
>> if you
>> insist, it's up to you ...
>> A combination of Linux RAID + LVM would look much more elegant in your
>> case, but for that you have to reinstall PVE by using the Debian iso.
>> During the installation create a linux raid array with lvm on top and
>> add PVE repos ass described in the wiki:
> That's right. Now I understand that lvm/zfs would be a mess. Mainly
> zfs doesn't create a block devices such as partitions on which I could
> do pvcreate ...
> and make It part of a lvm volumen group.
> After a (zfs create -V 100G rpool/lvm) a have to do a losetup to
> create a loop device an so on...
> Instead, I will keep zfs Raid mounted on "/" (local storage) on the
> last 4 Proxmox, remove the local-lvm storage from all Proxmox, and
> resize the local storage of the first 4 Proxmox . In such a way that
> all the 8 Proxmox have just local storage making the migration of VMs
> between nodes easy.
>> pve-user mailing list
>> pve-user at pve.proxmox.com
More information about the pve-user