Kimmo Paasiala schreef:
On Fri, Jun 14, 2013 at 12:22 AM, Johan Hendriks <joh.hendr...@gmail.com> wrote:
Op 13-6-2013 14:40, Kimmo Paasiala schreef:
The 'device' can be a partition as well as the whole disk, use 'zpool
labelclear' on the freebsd-zfs partition instead of the whole disk.
-Kimmo
On Thu, Jun 13, 2013 at 3:29 PM, Johan Hendriks <joh.hendr...@gmail.com>
wrote:
When i use zpool labelclear, it wipes the whole disk including gpt data.
So the whole disk is empty and i need to create the gpt partitions again.
Is this supposed to work like this?
The man page suggests that it only wipes the ZFS metadata.
zpool labelclear [-f] device
Removes ZFS label information from the specified device. The
device
must not be part of an active pool configuration.
-v Treat exported or foreign devices as inactive.
This is on FreeBSD 9.1 stable r251213 memstick install.
regards
Johan Hendriks
Neuteboom Automatisering
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Thanks for your reply.
I will try it on the actual zfs partition.
But imho it is a bad thing that it destroys the whole disk layout.
It does not remove ZFS label information, it removes ALL label information
on the disk or device you give it
regards
Johan Hendriks
Neuteboom Automatisering
Of course, zpool(8) will do exactly what you tell it to do. It does
not know about any partitioning schemes and assumes that the user
knows that using labelclear on a the whole disk will potentially
destroy all data on it including any partitioning information.
-Kimmo
Well as i found out, zpool(8) does not know what it clears. ! :D
I think an adjustment to the man page is in order here.
The man page clearly state it removes ZFS labels, not GPT, gmirror and
glabel labels.
It should mention it will remove labels from the disk/device, and that
it clears ALL labels.
If a user reads the man page it now looks save to use labelclear.
I thougt that zpool would know if there was zpool label information on
the disk, and if i a case there is no ZFS label information it will tell
me that!
In my case i did not loose anything, so no big deal but there will
proberbly be someone who gets bitten by this.
A plus is that i found a new way to clear my disks fast ! ;)
regards
Johan Hendriks
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