Verify that you can install the same version of gluster.If not, plan to update
to a version that is available to both old and new servers' OS.
Once you migrate (check all release notes in advance) to a common version, you
can do something like this:- Install the gluster software on the new host- Setup
the firewall to match the old server- Stop the gluster volumes and any geo-rep
sessions- Shutdown glusterd service- Umount the bricks- Disable LVM LVs/VGs that
host your bricks (if you share the same VG with other software, you will have to
use vgsplit)- Remove the multipath devices (multipath -f)- Remove the block
devices that are part of those multipath devices- Backup /etc/glusterfs- Backup
- Unmap the LUNs- Present the LUNs on the new host- Verify that the multipath
devices are there- Rescan the LVM stack (pvscan --cache, vgscan lvscan)-
Activate the VGs/LVs- Mount the bricks and ensure mounting on boot (autofs,
systemd's '.mount/.automount' units, fstab)- restore /etc/glusterfs
& /var/lib/glusterd- Start the glusterd service- Start the volumes- Mount
via FUSE to verify the situation- Start the geo-replications (if any)
Note, if you use VDO - disable the volume on the old system and backup the
config (/etc/vdoconf.yml) -> restore on the new host.
Check your tuned profile and if needed transfer the configuration file on the
new system and activate it.
I might have missed something (like custom entries in /etc/hosts) , so do a
short test on test system in advance.
Edit: You didn't mention your FS type, so I assume XFS .
Best Regards,Strahil Nikolov
On Mon, Jan 17, 2022 at 13:15, Diego Zuccato<diego.zuccato at unibo.it>
wrote: Hello all.
I have a Gluster volume that I'd need to move to a different server.
The volume is 4x10TB bricks accessed via FC (different LUNs) on an old
I have no extra space to create a copy of all the data, so I'd need to
hide the LUNs from the old server and make 'em visible to the new
the disks"), w/o copying data.
Can I just do something like this?
- stop volume
- umount bricks
- copy volume state files to new server (which ones?)
- map LUNs to new server
- mount bricks on new server (maintaining the same path they had on old
- start glusterd on new server
- start volume
DIFA - Dip. di Fisica e Astronomia
Alma Mater Studiorum - Universit? di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786
Community Meeting Calendar:
Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
Gluster-users mailing list
Gluster-users at gluster.org
-------------- next part --------------
An HTML attachment was scrubbed...