Harry Putnam wrote:
If I install a new IDE disk into a freshly installed 2008.11 (101b)
that resides on a partitioned disc. The new install claiming 25GB
leaving 35gb more I wanted to get into a raidz pool.
I am not following here. Are you installing 2008.11 to an IDE disk ?
What do I really need to do to create a raidz pool using this disk? I
don't mean the mechanics of creating the zpool, that seems well
documented.
Is this going to be the root pool or a secondary pool. raidz as root
pool is not supported using 2008.11.
I mean like if the disk has partitions from another os?
Do I need to `format/fdisk' and remove the partitions? Then create a
single partition for the whole disk?
This might be needed.
Disk naming convention in Solaris is as follows:
fdisk partitions
cxdyp0 (entire disk)
cxdyp1 (partition 1)
..
cxdyp4 (partition 4).
Extended partition are currently not supported.
Any disk partition can be marked as a Solaris type 2 partition and
within this Solaris places it's lablel called VTOC. A VTOC allows one
to further divide the partition into slices. Slices are represented in
the device namespace as cxdys{0,7}. By convention, slice 2 covers the
entire partition.
A zpool can take the entire disk by using cxdyp0 or cxdy (the p0 is
implied) as the disk name. In this case zfs will place a GPT label
(EFI spec). Alternatively one can also allocate all the disk to one
partition, place a VTOC on it.
If so, at the part it prompts you for a type of file system, what do I
need to do there?
Also, assuming the disk I installed on is also partitioned leaving 25
GB for sol-11 (1101b) and 35 to use in a zpool.
Two Solaris fdisk partitions are not supported.
What do I need to do to the remaining un-partitioned part of the disc?
Again, we run into the filesystem type prompt.
If I create a second partition encompassing the rest of the disk, how
to tell zfs about it?
In the online demos I've seen the raid1z is created using only the discs
that `format' sees.
Or is all the partitioning anxiety completely unnecessary?
I may just be blind but, the supposed Bible of OpenSolaris appears to
have pretty thin treatment in this area. It goes over ZFS a bit but
I'm not finding details about preparing disks for use, or what to do
with disks that have partitions.
At least one demo site
(Simons blog about zfs -
http://breden.org.uk/2008/09/01/home-fileserver-raidz-expansion/)
says you can't expand a raidz pool. That is has to be recreated
through a bunch of manipulations involving backup of possibly huge
amount of data.
Is that still the case in the latest dev builds?
I ask because I have 1 disk and a sata controller on order that will
allow me to add another three disks to the setup. Right now I'm just
tinkering (and probably annoying the heck out of these lists) trying
to understand the way zfs is intended to be used.
I can create and destroy all I want with the two discs I now have to
work with but not really understanding how treat partial discs or
discs with partitions; wondering to if I should wait until all disks are
installed before creating a real zfs pool that will start filling up
with data.
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