[zfs-discuss] space allocation vs. thin provisioning

2007-09-14 Thread Mike Gerdts
Short question: I'm curious as to how ZFS manages space (free and used) and how its usage interacts with thin provisioning provided by HDS arrays. Is there any effort to minimize the number of provisioned disk blocks that get writes so as to not negate any space benefits that thin provisioning

Re: [zfs-discuss] space allocation vs. thin provisioning

2007-09-14 Thread Victor Latushkin
Mike Gerdts wrote: Short question: Not so short really :-) Answers to som questions inline. I think others will correct me if I'm wrong. I'm curious as to how ZFS manages space (free and used) and how its usage interacts with thin provisioning provided by HDS arrays. Is there any effort

Re: [zfs-discuss] space allocation vs. thin provisioning

2007-09-14 Thread Moore, Joe
Mike Gerdts wrote: I'm curious as to how ZFS manages space (free and used) and how its usage interacts with thin provisioning provided by HDS arrays. Is there any effort to minimize the number of provisioned disk blocks that get writes so as to not negate any space benefits that thin

Re: [zfs-discuss] space allocation vs. thin provisioning

2007-09-14 Thread Mike Gerdts
On 9/14/07, Moore, Joe [EMAIL PROTECTED] wrote: I was trying to compose an email asking almost the exact same question, but in the context of array-based replication. They're similar in the sense that you're asking about using already-written space, rather than to go off into virgin sectors