Solved how to "unmirror" a pool/disk?

wolffnx

wolffnx

I reformulate my question from here:

how to correct detach a disk in mirror mode?

the case is the same, I have 2 mirrored disk
I want to detach the second and tell the other one that now is "alone"
and from booting from 1 disk like before
but if I do it the principal disk dont boot

zfs.jpg



someone guys? is a easy answer four you
just in case I wrote the boot loader code to the pincipal disk
like chrbr suggested to me(thanks) , but is the same case
I know that is one step to tell the disk "your are no mirrror anymore" but how?
thanks
 
Impossible to answer unless you're a bit more specific about the mirror. How was it set up, what filesystem was used, etc..
 
ShelLuser said:
Impossible to answer unless you're a bit more specific about the mirror. How was it set up, what filesystem was used, etc..
Click to expand...
FreeBSD 13-BETA3
ZFS
two SSD disk of the same size diferent brand
pool name zroot

ada0 is the main disk and ada1 is the second

Code: 
zpool attach zroot /dev/ada0 /dev/ada1
wait to resilver
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada1

if a detach the sata cable from my primary disk I can boot from the second
but if I do it backbards not
 
Well, to remove a mirror you'd normally use zpool(8). It's even part of the examples, check number 16:

Code: 
       The command to remove the mirrored log mirror-2 is:

         # zpool remove tank mirror-2

       The command to remove the mirrored data mirror-1 is:

         # zpool remove tank mirror-1
The booting process though is indeed probably caused by missing or incorrect bootcode. Normally you should be able to boot from both disks.
 
wolffnx said:
Hi , EFI
Click to expand...
Hi. Write the bootcode for EFI to your primary disk
Code: 
 # gpart bootcode -p /boot/boot1.efifat -i 1 ada0
and make sure you can boot from this disk.
Then detach your 2nd disk from the pool
Code: 
# zpool detach zroot /dev/ada1
This should be sufficient, no need to detach the SATA cable
 
ShelLuser said:
Well, to remove a mirror you'd normally use zpool(8). It's even part of the examples, check number 16:

Code: 
       The command to remove the mirrored log mirror-2 is:

         # zpool remove tank mirror-2

       The command to remove the mirrored data mirror-1 is:

         # zpool remove tank mirror-1
The booting process though is indeed probably caused by missing or incorrect bootcode. Normally you should be able to boot from both disks.
Click to expand...

Hi , when I run the command returns with the error
Code: 
cannot remove mirror-0: out of space
 
twllnbrck said:
Hi. Write the bootcode for EFI to your primary disk
Code: 
 # gpart bootcode -p /boot/boot1.efifat -i 1 ada0
and make sure you can boot from this disk.
Then detach your 2nd disk from the pool
Code: 
# zpool detach zroot /dev/ada1
This should be sufficient, no need to detach the SATA cable
Click to expand...

the twoo first times don work , the last one yes
I dettach the disk from the pool and copy the boot code to the disk
only a little diferent from you
Code: 
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
Thanks ShelLuser and twllnbrck , mark as solved
 
You must log in or register to reply here.
Back
Top