Re: [zfs-discuss] Mirroring to a smaller disk

2008-03-04 Thread Jonathan Loran
Patrick Bachmann wrote: Jonathan, On Tue, Mar 04, 2008 at 12:37:33AM -0800, Jonathan Loran wrote: I'm 'not sure I follow how this would work. The keyword here is thin provisioning. The sparse zvol only uses as much space as the actual data needs. So, if you use a sparse zvol, you m

Re: [zfs-discuss] Mirroring to a smaller disk

2008-03-04 Thread Patrick Bachmann
Jonathan, On Tue, Mar 04, 2008 at 12:37:33AM -0800, Jonathan Loran wrote: > I'm 'not sure I follow how this would work. The keyword here is thin provisioning. The sparse zvol only uses as much space as the actual data needs. So, if you use a sparse zvol, you may mirror to a smaller "disk", iff

Re: [zfs-discuss] Mirroring to a smaller disk

2008-03-04 Thread Jonathan Loran
Patrick Bachmann wrote: > Jonathan, > > On Mon, Mar 03, 2008 at 11:14:14AM -0800, Jonathan Loran wrote: > >> What I'm left with now is to do more expensive modifications to the new >> mirror to increase its size, or using zfs send | receive or rsync to >> copy the data, and have an extended

Re: [zfs-discuss] Mirroring to a smaller disk

2008-03-03 Thread Patrick Bachmann
Jonathan, On Mon, Mar 03, 2008 at 11:14:14AM -0800, Jonathan Loran wrote: > What I'm left with now is to do more expensive modifications to the new > mirror to increase its size, or using zfs send | receive or rsync to > copy the data, and have an extended down time for our users. Yuck! Not su

Re: [zfs-discuss] Mirroring to a smaller disk

2008-03-03 Thread Jonathan Loran
Shawn Ferry wrote: On Mar 3, 2008, at 2:14 PM, Jonathan Loran wrote: Now I know this is counterculture, but it's biting me in the back side right now, and ruining my life. I have a storage array (iSCSI SAN) that is performing badly, and requires some upgrades/reconfiguration. I have a se

Re: [zfs-discuss] Mirroring to a smaller disk

2008-03-03 Thread Shawn Ferry
On Mar 3, 2008, at 2:14 PM, Jonathan Loran wrote: > > Now I know this is counterculture, but it's biting me in the back side > right now, and ruining my life. > > I have a storage array (iSCSI SAN) that is performing badly, and > requires some upgrades/reconfiguration. I have a second storage ar

[zfs-discuss] Mirroring to a smaller disk

2008-03-03 Thread Jonathan Loran
Now I know this is counterculture, but it's biting me in the back side right now, and ruining my life. I have a storage array (iSCSI SAN) that is performing badly, and requires some upgrades/reconfiguration. I have a second storage array that I wanted to set up as a ZFS mirror so I could fre