Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-24 Thread Avishay Traeger
One more reason why block storage management doesn't really work on file systems. I'm OK with storing the format, but that just means you fail migration/backup operations with different formats, right? On Mon, Jun 23, 2014 at 6:07 PM, Trump.Zhang zhangleiqi...@gmail.com wrote: Hi, all:

Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-24 Thread Duncan Thomas
On 24 June 2014 16:42, Avishay Traeger avis...@stratoscale.com wrote: One more reason why block storage management doesn't really work on file systems. I'm OK with storing the format, but that just means you fail migration/backup operations with different formats, right? Actually I think

Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-24 Thread John Griffith
On Tue, Jun 24, 2014 at 9:42 AM, Avishay Traeger avis...@stratoscale.com wrote: One more reason why block storage management doesn't really work on file systems. I'm OK with storing the format, but that just means you fail migration/backup operations with different formats, right? ​+1...

Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-24 Thread John Griffith
On Tue, Jun 24, 2014 at 9:56 AM, Duncan Thomas duncan.tho...@gmail.com wrote: On 24 June 2014 16:42, Avishay Traeger avis...@stratoscale.com wrote: One more reason why block storage management doesn't really work on file systems. I'm OK with storing the format, but that just means you fail

[openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-23 Thread Trump.Zhang
Hi, all: Currently, there are several filesystem-based drivers in Cinder, such as nfs, glusterfs, etc. Multiple format of volume other than raw can be potentially supported in these drivers, such as qcow2, raw, sparse, etc. However, Cinder does not store the actual format of volume and

Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-23 Thread Duncan Thomas
Write a blueprint and a patch... On 23 June 2014 16:07, Trump.Zhang zhangleiqi...@gmail.com wrote: Hi, all: Currently, there are several filesystem-based drivers in Cinder, such as nfs, glusterfs, etc. Multiple format of volume other than raw can be potentially supported in these

Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-23 Thread Eric Harney
On 06/23/2014 11:07 AM, Trump.Zhang wrote: Hi, all: Currently, there are several filesystem-based drivers in Cinder, such as nfs, glusterfs, etc. Multiple format of volume other than raw can be potentially supported in these drivers, such as qcow2, raw, sparse, etc. However,