[PVE-User] Fwd: Snapshot

[Joel S. | VOZELIA]

>From https://pve.proxmox.com/wiki/Live_Snapshots#Requirements:

"""
Requirements

In order to use Proxmox VE live snapshots all your virtual machine disk images must be stored as qcow2 image or be in a storage that supports live snapshots and is managed by Proxmox (like Ceph’s RADOS Block Device (RBD)). Future version will support also Sheepdog or Nexenta.

Difference between LVM snapshots and Live snapshots

LVM snapshots are used for doing backups. Live snapshots are used to preserve the state of KVM virtual machine.
"""

So we are confusing "LVM Snapshots" with "Live snapshots" don't you think? :)

They both have different requirements and different goals...


----- Original Message ----- 

> From: "Gilberto Nunes" <gilberto.nunes32 at gmail.com>
> To: "Joel S. | VOZELIA" <joel at vozelia.com>
> Cc: pve-user at pve.proxmox.com
> Sent: Thursday, July 10, 2014 7:30:29 PM
> Subject: Re: [PVE-User] Fwd: Snapshot

> Yes... I agree.... But, also, according to this:

> https://pve.proxmox.com/wiki/Live_Snapshots#Requirements

> If I have a iSCSI Storage that support live snapshot, I am able to take
> snapshot too...

> Perhaps, this is not the case if I use some kind of software iSCSI, like
> iscsi-target or tgt in a Linux box, such Ubuntu, for example....

> 2014-07-10 14:24 GMT-03:00 Joel S. | VOZELIA < joel at vozelia.com > :

> > Hi,
> 

> > Check and see this post:
> 

> > http://forum.proxmox.com/threads/11929-VM-snapshots-will-not-work-Backup-works
> 

> > The "Take snapshot" seems to be enabled only on hosts with qcow2 disks...
> 

> > ----- Original Message -----
> 
> > > From: "Joel S. | VOZELIA" < joel at vozelia.com >
> 
> > > To: "Gilberto Nunes" < gilberto.nunes32 at gmail.com >
> 
> > > Cc: pve-user at pve.proxmox.com
> 
> > > Sent: Thursday, July 10, 2014 7:16:05 PM
> 
> > > Subject: Re: [PVE-User] Fwd: Snapshot
> 
> > >
> 
> > > Hi,
> 
> > >
> 
> > > I use vzdump normally to create snapshots not the GUI, I've just checked
> > > and
> 
> > > the "Take snapshot" is also disabled for me (not sure why though...).
> 
> > >
> 
> > > Try this command:
> 
> > >
> 
> > > vzdump --mode snapshot --dumpdir /path/to/some/dir <VMID>
> 
> > >
> 
> > > BR,
> 
> > > Joel
> 
> > >
> 
> > > ----- Original Message -----
> 
> > >
> 
> > > > From: "Gilberto Nunes" < gilberto.nunes32 at gmail.com >
> 
> > > > To: "Yannis Milios" < yannis.milios at gmail.com >
> 
> > > > Cc: pve-user at pve.proxmox.com
> 
> > > > Sent: Thursday, July 10, 2014 6:19:41 PM
> 
> > > > Subject: Re: [PVE-User] Fwd: Snapshot
> 
> > >
> 
> > > > I make some Google research and found out that IBM Storwize V3700
> > > > support
> 
> > > > Snapshot...
> 
> > > > So, I thing that my poor storage solution is wrong in this context....
> 
> > > > I thing iSCSI storage software do not has snapshot support.... I meant,
> > > > not
> 
> > > > LVM Snapshot but Live Snapshot...
> 
> > >
> 
> > > > 2014-07-10 12:49 GMT-03:00 Gilberto Nunes < gilberto.nunes32 at gmail.com
> > > > >
> > > > :
> 
> > >
> 
> > > > > I don't know... Perhaps I misconfigurate something... But I tried
> > > > > with
> 
> > > > > another iSCSI Target Software
> 
> > > >
> 
> > > > > ( Iscsi Enterprise Target - IET ) but still have the same behavior: I
> 
> > > > > cannot
> 
> > > > > change disk format...
> 
> > > >
> 
> > >
> 
> > > > > 2014-07-10 11:54 GMT-03:00 Gilberto Nunes <
> > > > > gilberto.nunes32 at gmail.com
> > > > > >
> 
> > > > > :
> 
> > > >
> 
> > >
> 
> > > > > > Hi Yannis....
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > I have follow all those steps that you pointed to me on your last
> 
> > > > > > reply...
> 
> > > > >
> 
> > > >
> 
> > > > > > Well, in fact, I already do it in other physical server before, but
> 
> > > > > > without
> 
> > > > > > success....
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > When I attempt to create a VM, I cannot choose Format to my VM
> > > > > > disk,
> > > > > > as
> 
> > > > > > you
> 
> > > > > > can see bellow:
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > Some other advices??
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > Thank you
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > 2014-07-10 11:31 GMT-03:00 Gilberto Nunes <
> > > > > > gilberto.nunes32 at gmail.com
> 
> > > > > > >
> 
> > > > > > :
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > yep... I just do it right now... But I need to reboot both nodes,
> 
> > > > > > > because
> 
> > > > > > > qorum disk go to offline...
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > I will post results later... Stay tuned =)
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > 2014-07-10 11:29 GMT-03:00 Yannis Milios <
> > > > > > > yannis.milios at gmail.com
> > > > > > > >
> 
> > > > > > > :
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > > No, they do not.
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > Follow these steps from the wiki:
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > > LVM Groups with Network Backing
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > > In this configuration, network block devices (iSCSI targets)
> > > > > > > > are
> 
> > > > > > > > used
> 
> > > > > > > > as
> 
> > > > > > > > the
> 
> > > > > > > > physical volumes for LVM logical volume storage. This is a two
> > > > > > > > step
> 
> > > > > > > > procedure and can be fully configured via the web interface.
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > > 1. First, add the iSCSI target. (On some iSCSI targets you need
> > > > > > > > to
> 
> > > > > > > > add
> 
> > > > > > > > the
> 
> > > > > > > > IQN of the Proxmox VE server to allow access.)
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * Click 'Add iSCSI Target' on the Storage list
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * As storage name use whatever you want but take care, this
> > > > > > > > name
> 
> > > > > > > > cannot
> 
> > > > > > > > be
> 
> > > > > > > > changed later.
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * Give the 'Portal' IP address or servername and scan for
> > > > > > > > unused
> 
> > > > > > > > targets
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * disable 'use LUNs direcly'
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * Click save
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > 2. Second, add LVM group on this target.
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * Click 'Add LVM Group' on the Storage list
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * As storage name use whatever you want but take care, this
> > > > > > > > name
> 
> > > > > > > > cannot
> 
> > > > > > > > be
> 
> > > > > > > > changed later.
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * For 'Base Storage', use the drop down menu to select the
> 
> > > > > > > > previously
> 
> > > > > > > > defined
> 
> > > > > > > > iSCSI target.
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * For 'Base Volume' select a LUN
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * For 'Volume Group Name' give a unique name (this name cannot
> > > > > > > > be
> 
> > > > > > > > changed
> 
> > > > > > > > later).
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * Enable shared use (recommended)
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > > * Click save
> 
> > > > > > >
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > > --
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > > > > > > Gilberto Ferreira
> 
> > > > > >
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > > --
> 
> > > > >
> 
> > > >
> 
> > > > > > Gilberto Ferreira
> 
> > > > >
> 
> > > >
> 
> > >
> 
> > > > > --
> 
> > > >
> 
> > > > > Gilberto Ferreira
> 
> > > >
> 
> > >
> 
> > > > --
> 
> > > > Gilberto Ferreira
> 
> > >
> 
> > > > _______________________________________________
> 
> > > > pve-user mailing list
> 
> > > > pve-user at pve.proxmox.com
> 
> > > > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
> 
> > > _______________________________________________
> 
> > > pve-user mailing list
> 
> > > pve-user at pve.proxmox.com
> 
> > > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
> 
> > >
> 

> --
> Gilberto Ferreira