[mythtv-users] ZFS anyone? Need to move off ZFS Myth machine and not sure what to do..

Jean-Yves Avenard jyavenard at gmail.com
Fri Oct 14 12:37:06 UTC 2011


On Friday, 14 October 2011, Brian J. Murrell <brian at interlinx.bc.ca> wrote:
> On 11-10-13 04:30 PM, Mark wrote:

> Surely one of ZFS' fancy-pants features is that it lets you remove a
> drive from a filesystem without a loss of data -- assuming there is at
> least as much space free as the size of that disk you want to remove.
> If you can remove a drive (again, assuming you have the space free to do
> it) you remove it (if not, this is where you will need the one new 2TB
> drive), move it to your myth box, create an ext4 filesystem on it, put
> it into a storage group and then move 2TB of recording off of ZFS on
> that disk.
> Doing so will free up another 2TB of disk on your ZFS filesystem
> allowing you to remove a second drive.  Move it to your myth box, put
> ext4 on it and move another 2TB from your ZFS filesystem.  Rinse and
> repeat until you have all of your drives independent and in a storage
> group.  If you had to buy a new 2TB drive to accomplish it, you probably
> needed it anyway.  :-)

What a weird logic....

This is certainly not going to work the disks are raid-z... And they
probably are...

You can't remove a disk loosing failure resilience, and it stops there. You
can't shrink the disks to respan on less disks.
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