[CentOS] [Bulk] Re: safest way to mount iscsi loopback..

Mon Feb 15 10:40:45 UTC 2016
lejeczek <peljasz at yahoo.co.uk>

On 11/02/16 20:20, John R Pierce wrote:
> On 2/11/2016 5:14 AM, lejeczek wrote:
>> nobody does use iscsi loopback over an lvm? 
> I'm not sure what 'iscsi loopback' even means.    iSCSI is 
> used to mount a virtual block device hosted on another 
> system (initiator mode) or to share a virtual block device 
> (target mode), while loopback is used to mount a local 
> file as a device, such as an .iso image of an optical disc.
> can you explain in a little more detail what you're trying 
> to do ?
whatever devices you have in your backstores (LIO 
implementation is the default one I believe) and then 
naturally in your targets, etc.. - on the same local system 
you can loop them back = LIO presents them again to the 
kernel as local scsi devices.
I'm thinking, maybe multipath should be involved/deployed here?
I can mount such a loopback iscsi target but I cannot use 
FS's uuid because - in my case first UUID comes from LVM's 
lv and then the same UUID comes via iscsi loopback - which 
makes sense for it's the same one filesystem.