.. what is? fellow centosians.
how to you mount your loopback targets? I'm trying lvm backstore, I was hoping I would do it with uuid, but it's exposed more than once and how would kernel decide which device to use I don't know.
thanks
nobody does use iscsi loopback over an lvm?
On 05/02/16 17:36, lejeczek wrote:
.. what is? fellow centosians.
how to you mount your loopback targets? I'm trying lvm backstore, I was hoping I would do it with uuid, but it's exposed more than once and how would kernel decide which device to use I don't know.
thanks _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
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 ?
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.
On Mon, 15 Feb 2016, lejeczek wrote:
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.
Why would you be trying to do some loopback fun when you could just mount the underlying block device directly? Why not avoid loopback and mount the LV?
jh
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John Hodrien -
John R Pierce -
lejeczek