Re: [zfs-discuss] Adding another mirror to storage pool

2009-10-20 Thread Bob Friesenhahn
On Tue, 20 Oct 2009, Matthias Appel wrote: OK, that means, over time, data will be distributed across all mirrors? (assuming all blocks will be written once) Yes, but it is quite rare for all files to be re-written. If you have reliable storage somewhere else, you could send your existing po

Re: [zfs-discuss] Adding another mirror to storage pool

2009-10-20 Thread Matthias Appel
Von: Bruno Sousa [mailto:bso...@epinfante.com] Gesendet: Dienstag, 20. Oktober 2009 22:20 An: Matthias Appel Cc: zfs-discuss@opensolaris.org Betreff: Re: [zfs-discuss] Adding another mirror to storage pool Hi, Something like http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id

Re: [zfs-discuss] Adding another mirror to storage pool

2009-10-20 Thread Bruno Sousa
Hi, Something like http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6855425 ? Bruno Matthias Appel wrote: You will see more IOPS/bandwith, but if your existing disks are very full, then more traffic may be sent to the new disks, which results in less benefit. OK, that mean

Re: [zfs-discuss] Adding another mirror to storage pool

2009-10-20 Thread Matthias Appel
> You will see more IOPS/bandwith, but if your existing disks are very > full, then more traffic may be sent to the new disks, which results in > less benefit. OK, that means, over time, data will be distributed across all mirrors? (assuming all blocks will be written once) I think a useful exte

Re: [zfs-discuss] Adding another mirror to storage pool

2009-10-20 Thread Bob Friesenhahn
On Tue, 20 Oct 2009, Matthias Appel wrote: As these mirrors will be "striped" in the pool I want to know what will happen to the existing data oft he pool. Will it stay at its location and only new data will be written to the new mirror or will the existing data be spread over all 3 mirrors?

[zfs-discuss] Adding another mirror to storage pool

2009-10-20 Thread Matthias Appel
Hi, at the moment I am running a pool consisting of 4 vdefs (Seagate Enterprise SATA disks) assmebled to 2 mirrors. Now I want to add two more drives to extend the capacity to 1.5 times the old capacity. As these mirrors will be "striped" in the pool I want to know what will happen to the existi