[PVE-User] Fwd: Snapshot

Gilberto Nunes gilberto.nunes32 at gmail.com
Thu Jul 10 19:49:41 CEST 2014


And just to compare....

I have install XenServer 6.2 here right now, and using the same iSCSO
Storage, I am able to took some snapshot....

So, I think that has same issue with Proxmox...

Don't you think?


2014-07-10 14:43 GMT-03:00 Gilberto Nunes <gilberto.nunes32 at gmail.com>:

> 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
>



-- 
Gilberto Ferreira
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