Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-28 Thread Erik Trimble
Richard Elling wrote: Erik Trimble wrote: If you had known about the drive sizes beforehand, the you could have done something like this: Partition the drives as follows: A: 1 20GB partition B: 1 20gb 1 10GB partition C: 1 40GB partition D: 1 40GB partition 2 10GB paritions then you

[zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Jef Pearlman
Jef Pearlman wrote: Absent that, I was considering using zfs and just having a single pool. My main question is this: what is the failure mode of zfs if one of those drives either fails completely or has errors? Do I permanently lose access to the entire pool? Can I attempt to read

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Darren Dunham
Perhaps I'm not asking my question clearly. I've already experimented a fair amount with zfs, including creating and destroying a number of pools with and without redundancy, replacing vdevs, etc. Maybe asking by example will clarify what I'm looking for or where I've missed the boat. The key

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Neil Perrin
Darren Dunham wrote: The problem I've come across with using mirror or raidz for this setup is that (as far as I know) you can't add disks to mirror/raidz groups, and if you just add the disk to the pool, you end up in the same situation as above (with more space but no redundancy). You

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Darren Dunham
Darren Dunham wrote: The problem I've come across with using mirror or raidz for this setup is that (as far as I know) you can't add disks to mirror/raidz groups, and if you just add the disk to the pool, you end up in the same situation as above (with more space but no redundancy).

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Erik Trimble
On Wed, 2007-06-27 at 14:50 -0700, Darren Dunham wrote: Darren Dunham wrote: The problem I've come across with using mirror or raidz for this setup is that (as far as I know) you can't add disks to mirror/raidz groups, and if you just add the disk to the pool, you end up in the same

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Richard Elling
Jef Pearlman wrote: Perhaps I'm not asking my question clearly. I've already experimented a fair amount with zfs, including creating and destroying a number of pools with and without redundancy, replacing vdevs, etc. Maybe asking by example will clarify what I'm looking for or where I've

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Erik Trimble
On Wed, 2007-06-27 at 12:03 -0700, Jef Pearlman wrote: Jef Pearlman wrote: Absent that, I was considering using zfs and just having a single pool. My main question is this: what is the failure mode of zfs if one of those drives either fails completely or has errors? Do I

Re: [zfs-discuss] Re: Drive Failure w/o Redundancy

2007-06-27 Thread Richard Elling
Erik Trimble wrote: If you had known about the drive sizes beforehand, the you could have done something like this: Partition the drives as follows: A: 1 20GB partition B: 1 20gb 1 10GB partition C: 1 40GB partition D: 1 40GB partition 2 10GB paritions then you do: zpool create tank