Hi all,
I am bit confused since the recommendation for HA is either NAS/NFS or SAN/(iSCSI|FC). I understand the idea is that the PVE cluster must have a shared storage but how do you create a shared storage using iSCSI? Is it the intention to have the nodes share the same LUN without a cluster aware file system??
To the best of my knowledge sharing a LUN between different nodes is a dangerous setup given the fact that iSCSI does not support locking or is this something you can circumvent since pvecm ensures that a file will never be accessed by more than a single node at the time?
From studying the documentation as this forum it seems this is the way to go:
1) Create to dedicated LUN's on the SAN. (file IO or block IO??)
2) Add LVM on these LUN's
3) One LUN is configured from the web interface: disable 'use LUNs direcly' and add a shared LVM group
4) Use one LUN for KVM
5) Mount the second LUN under /var/lib/vz for CT's
Is the above all there is to it? !!
Thanks in advance.
Michael.
I am bit confused since the recommendation for HA is either NAS/NFS or SAN/(iSCSI|FC). I understand the idea is that the PVE cluster must have a shared storage but how do you create a shared storage using iSCSI? Is it the intention to have the nodes share the same LUN without a cluster aware file system??
To the best of my knowledge sharing a LUN between different nodes is a dangerous setup given the fact that iSCSI does not support locking or is this something you can circumvent since pvecm ensures that a file will never be accessed by more than a single node at the time?
From studying the documentation as this forum it seems this is the way to go:
1) Create to dedicated LUN's on the SAN. (file IO or block IO??)
2) Add LVM on these LUN's
3) One LUN is configured from the web interface: disable 'use LUNs direcly' and add a shared LVM group
4) Use one LUN for KVM
5) Mount the second LUN under /var/lib/vz for CT's
Is the above all there is to it? !!
Thanks in advance.
Michael.