[PVE-User] Fwd: Snapshot

Gilberto Nunes gilberto.nunes32 at gmail.com
Thu Jul 10 19:43:04 CEST 2014


>From the beggin, that's very clear to me... I know the difference between
LVM Snapshots an Live Snapshots...
Perhaps I do not mention it on my first mail...
My doubt is if I deploy my software storage under Ubuntu or Debian or even
in CentOS, whatever SO, if I get the same behavior like real storage...

But I see that is not the case....


2014-07-10 14:37 GMT-03:00 Joel S. | VOZELIA <joel at vozelia.com>:

> 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
>



-- 
Gilberto Ferreira
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