Hello,

I have env1 and env2, both in 4.3 and both configured as single host HCI environments.

On both I have the predefined hosted_storage, data and vmstore gluster storage domains.

On env1 I have hosted_storage and data on a disk, and vmstore on a whole different disk. I also have a "big2" gluster storage domain created in another disk in a second time.

I want  to scratch env1 but preserve and then import vmstore and big2 storage domains in env2

This "big2" is configured as a PV on the whole 4Tb disk on env1.

- nvme1n1 4Tb  gluster_vg_4t2   serial: BTLF72840DVK4P0DGN
eui.01000000010000005cd2e45c02de4d51 dm-3 NVME,INTEL SSDPEDKX040T7                    
size=3.6T features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=0 status=active
  `- 1:0:1:0 nvme1n1 259:3 active undef running

[root@ovirt ~]# pvs /dev/mapper/eui.01000000010000005cd2e45c02de4d51
  PV                                               VG             Fmt  Attr PSize  PFree
  /dev/mapper/eui.01000000010000005cd2e45c02de4d51 gluster_vg_4t2 lvm2 a--  <3.64t    0
[root@ovirt ~]#

[root@ovirt ~]# lvs gluster_vg_4t2
  LV              VG             Attr       LSize  Pool    Origin Data%  Meta%  Move Log Cpy%Sync Convert
  gluster_lv_big2 gluster_vg_4t2 Vwi-aot--- <4.35t my_pool        1.36                                  
  my_pool         gluster_vg_4t2 twi-aot--- <3.61t                1.64   0.18                            
[root@ovirt ~]#

In similar way the vmstore storage domain has:

- nvme2n1 1Tb gluster_vg_nvme1n1   serial: PHLF8125037R1P0GGN
eui.01000000010000005cd2e4e359284f51 dm-1 NVME,INTEL SSDPE2KX010T7                    
size=932G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=0 status=active
  `- 2:0:1:0 nvme2n1 259:2 active undef running

[root@ovirt ~]# pvs /dev/mapper/eui.01000000010000005cd2e4e359284f51
  PV                                               VG                 Fmt  Attr PSize   PFree
  /dev/mapper/eui.01000000010000005cd2e4e359284f51 gluster_vg_nvme1n1 lvm2 a--  931.51g    0
[root@ovirt ~]#

[root@ovirt ~]# lvs gluster_vg_nvme1n1
  LV                                  VG                 Attr       LSize   Pool                                Origin Data%  Meta%  Move Log Cpy%Sync Convert
  gluster_lv_vmstore                  gluster_vg_nvme1n1 Vwi-aot--- 930.00g gluster_thinpool_gluster_vg_nvme1n1        63.99                                
  gluster_thinpool_gluster_vg_nvme1n1 gluster_vg_nvme1n1 twi-aot--- 921.51g                                            64.58  1.80                          
[root@ovirt ~]#

I presume the correct way is:

- env1

delete and detach vmstore and big2 (without formatting/zeroing)

- env2

attach the two disks to the system

and then?

What should I do at gluster commands level to "import" the already setup gluster bricks/volumes and then at oVirt side to import the corresponding storage domain?

BTW: can I import the previous storage domain named "vmstore" giving anothe r name such as vmstore2, not to create conflict with already existing "vmstore" storage domain or the name is hard coded when importing and creating possible conflict?

Thanks,

Gianluca