--- Begin Message ---
On 8/31/20 6:31 PM, Dominik Csapak wrote:
> this is always a bad idea, because the different installations do not
> communicate and do not know about the others, so
> there is nothing that tells one installation/cluster that some
> disk belongs to another installation.
>
> do not let multiple clusters access the same storage
> (see also https://pve.proxmox.com/wiki/Storage for that info)
>
> if that happens and you have vmid collisions, every cluster thinks
> that all disks belong to its own vm (which obviously does not work)
>
> this is particularly bad for e.g. lvm, since the way we lock
> the storage is based around a cluster so multiple lvm operations
> from multiple cluster will conflict with each other
>
These are 10 nodes which they are not clustered, I'm creating a cluster
and migrating each vm to cluster in order to prevent vmid collision and
more.
>
> btw. afaics from your config, this has nothing to do with
> iscsi, but the actual storage is lvm?
>
Yes, I'm using lvm over iscsi.
> or do you use the iscsi luns directly?
>
> this should not happen if you have selected the same vgname
> since the second installation should have listed the disks and
> created a new one
> > can you post both storage cfgs from both installations?
> (and tell us which is which?)
All proxmoxs storage configuration are the same as this:
dir: local
path /var/lib/vz
content rootdir,iso,snippets,vztmpl,images
maxfiles 0
nfs: nas02nfs
export /proxnfs
path /mnt/pve/nas02nfs
server a.b.c.d
content iso,rootdir,backup,vztmpl,images,snippets
maxfiles 3
iscsi: nas02iscsi
portal a.b.c.d
target iqn.2004-04.com.qnap:ts-431x2:iscsi.proxmox.36fa44
content images
lvm: nas02iscsilvm
vgname vg_nas02
content rootdir,images
shared 1
Ignore the nfs storage, we use it for backups.
>
> if you used the luns directly, there is no mechanism to
> limit the use of a disk at all, and the admin is responsible
> for handling the assignment
>
> you can even assign the same lun to multiple vms in the same cluster
> (there are use cases for this, but needs special file systems, e.g.
> ocfs2 or gfs2)
>
> which is why most users choose to use lvm over iscsi, it
> is then managed (and locked) by our cluster mechanism,
> but only in a single cluster
> Well sorry I didn't state well, but I'm using lvm over iscsi.
signature.asc
Description: OpenPGP digital signature
--- End Message ---
_______________________________________________
pve-user mailing list
[email protected]
https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user
