Re: zvol clone diffs

2016-09-22 Thread Dean E. Weimer
On 2016-09-22 9:38 am, Slawa Olhovchenkov wrote: On Thu, Sep 22, 2016 at 04:56:53PM +0500, Eugene M. Zheganin wrote: Hi. I should mention from the start that this is a question about an engineering task, not a question about FreeBSD issue. I have a set of zvol clones that I redistribute over

Re: zvol clone diffs

2016-09-22 Thread Slawa Olhovchenkov
On Thu, Sep 22, 2016 at 04:56:53PM +0500, Eugene M. Zheganin wrote: > Hi. > > I should mention from the start that this is a question about an > engineering task, not a question about FreeBSD issue. > > I have a set of zvol clones that I redistribute over iSCSI. Several > Windows VMs use these

Re: zvol clone diffs

2016-09-22 Thread Matthew Seaman
On 22/09/2016 13:56, Eugene M. Zheganin wrote: > Is there any way to figure out what these writes are ? Because I cannot > propose any simple enough method. Given you're using volumes for datasets where ZFS knows nothing about the contained filesystem structure, about the only way to proceed is

zvol clone diffs

2016-09-22 Thread Eugene M. Zheganin
Hi. I should mention from the start that this is a question about an engineering task, not a question about FreeBSD issue. I have a set of zvol clones that I redistribute over iSCSI. Several Windows VMs use these clones as disks via their embedded iSCSI initiators (each clone represents a disk