Re: [zfs-discuss] compress an existing filesystem

2009-12-18 Thread Brandon High
On Fri, Dec 18, 2009 at 7:44 PM, Edward Ned Harvey wrote: > So ... Something like this? > > zpool create -m /path/to/mountpoint myzpool c1t0d0 > > and then...  Assuming it's a 500G disk ... > zfs create -V 50G /path/to/mountpoint/unused > zfs create /path/to/mountpoint/importantdata Once you've c

Re: [zfs-discuss] compress an existing filesystem

2009-12-18 Thread Edward Ned Harvey
> I've taken to creating an unmounted empty filesystem with a > reservation to prevent the zpool from filling up. It gives you > behavior similar to ufs's reserved blocks. So ... Something like this? zpool create -m /path/to/mountpoint myzpool c1t0d0 and then... Assuming it's a 500G disk ... zf

Re: [zfs-discuss] compress an existing filesystem

2009-12-17 Thread Brandon High
On Thu, Dec 17, 2009 at 7:11 AM, Edward Ned Harvey wrote: > And I've heard a trend of horror stories, that zfs has a tendency to implode > when it's very full.  So try to keep your disks below 90%. I've taken to creating an unmounted empty filesystem with a reservation to prevent the zpool from f

Re: [zfs-discuss] compress an existing filesystem

2009-12-17 Thread Edward Ned Harvey
> Hi all, > I need to move a filesystem off of one host and onto another > smaller > one. The fs in question, with no compression enabled, is using 1.2 TB > (refer). I'm hoping that zfs compression will dramatically reduce this > requirement and allow me to keep the dataset on an 800 GB sto

Re: [zfs-discuss] compress an existing filesystem

2009-12-17 Thread Darren J Moffat
Jacob Ritorto wrote: Hi all, I need to move a filesystem off of one host and onto another smaller one. The fs in question, with no compression enabled, is using 1.2 TB (refer). I'm hoping that zfs compression will dramatically reduce this requirement and allow me to keep the dataset on a

[zfs-discuss] compress an existing filesystem

2009-12-17 Thread Jacob Ritorto
Hi all, I need to move a filesystem off of one host and onto another smaller one. The fs in question, with no compression enabled, is using 1.2 TB (refer). I'm hoping that zfs compression will dramatically reduce this requirement and allow me to keep the dataset on an 800 GB store. Does th