Re: Geo-replication status Faulty

[Gilberto Nunes <gilberto.nunes32@xxxxxxxxx>]

[SOLVED]

Well... It seems to me that pure Debian Linux 10 has some problem with XFS, which is the FS that  I used.

It's not accept attr2 mount options.

Interestingly enough, I have now used Proxmox 6.x, which is Debian based, I am now able to use the attr2 mount point option.

Then the Faulty status of geo-rep has gone.

Perhaps Proxmox staff has compiled xfs from scratch... Don't know....
But now I am happy ' cause the main reason to use geo-rep to me is to use it over Proxmox....

cat /etc/fstab  
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/pve/root / xfs defaults 0 1
/dev/pve/swap none swap sw 0 0
/dev/sdb1       /DATA   xfs     attr2   0       0
gluster01:VMS /vms glusterfs defaults,_netdev,x-systemd.automount,backupvolfile-server=gluster02 0 0
proc /proc proc defaults 0 0

---

Gilberto Nunes Ferreira

Em ter., 27 de out. de 2020 às 09:39, Gilberto Nunes <gilberto.nunes32@xxxxxxxxx> escreveu:

>> IIUC you're begging for split-brain ...

Not at all!

I have used this configuration and there isn't any split brain at all!

But if I do not use it, then I get a split brain.

Regarding count 2 I will see it!

Thanks

---

Gilberto Nunes Ferreira

Em ter., 27 de out. de 2020 às 09:37, Diego Zuccato <diego.zuccato@xxxxxxxx> escreveu:

Il 27/10/20 13:15, Gilberto Nunes ha scritto:
> I have applied this parameters to the 2-node gluster:
> gluster vol set VMS cluster.heal-timeout 10
> gluster volume heal VMS enable
> gluster vol set VMS cluster.quorum-reads false
> gluster vol set VMS cluster.quorum-count 1
Urgh!
IIUC you're begging for split-brain ...
I think you should leave quorum-count=2 for safe writes. If a node is
down, obviously the volume becomes readonly. But if you planned the
downtime you can reduce quorum-count just before shutting it down.
You'll have to bring it back to 2 before re-enabling the downed server,
then wait for heal to complete before being able to down the second server.

> Then I mount the gluster volume putting this line in the fstab file:
> In gluster01
> gluster01:VMS /vms glusterfs
> defaults,_netdev,x-systemd.automount,backupvolfile-server=gluster02 0 0
> In gluster02
> gluster02:VMS /vms glusterfs
> defaults,_netdev,x-systemd.automount,backupvolfile-server=gluster01 0 0
Isn't it preferrable to use the 'hostlist' syntax?
gluster01,gluster02:VMS /vms glusterfs defaults,_netdev 0 0
A / at the beginning is optional, but can be useful if you're trying to
use the diamond freespace collector (w/o the initial slash, it ignores
glusterfs mountpoints).

--
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786

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