Hey Sahina,

it seems that almost all of my devices are locked - just like Fred's.

What exactly does it mean - I don't have any issues with my bricks/storage domains.

Best Regards,

Strahil Nikolov

В понеделник, 20 май 2019 г., 14:56:11 ч. Гринуич+3, Sahina Bose <sabose@redhat.com> написа:

To scale existing volumes - you need to add bricks and run rebalance on the gluster volume so that data is correctly redistributed as Alex mentioned.

We do support expanding existing volumes as the bug https://bugzilla.redhat.com/show_bug.cgi?id=1471031 has been fixed

As to procedure to expand volumes:

1. Create bricks from UI - select Host -> Storage Device -> Storage device. Click on "Create Brick"

If the device is shown as locked, make sure there's no signature on device.  If multipath entries have been created for local devices, you can blacklist those devices in multipath.conf and restart multipath.

(If you see device as locked even after you do this -please report back).

2. Expand volume using Volume -> Bricks -> Add Bricks, and select the 3 bricks created in previous step

3. Run Rebalance on the volume. Volume -> Rebalance.

On Thu, May 16, 2019 at 2:48 PM Fred Rolland <frolland@redhat.com> wrote:

Sahina,

Can someone from your team review the steps done by Adrian?

Thanks,

Freddy

On Thu, Apr 25, 2019 at 5:14 PM Adrian Quintero <adrianquintero@gmail.com> wrote:

Ok, I will remove the extra 3 hosts, rebuild them from scratch and re-attach them to clear any possible issues and try out the suggestions provided.

thank you!

On Thu, Apr 25, 2019 at 9:22 AM Strahil Nikolov <hunter86_bg@yahoo.com> wrote:

I have the same locks , despite I have blacklisted all local disks:

# VDSM PRIVATE
blacklist {
        devnode "*"
        wwid Crucial_CT256MX100SSD1_14390D52DCF5
        wwid WDC_WD5000AZRX-00A8LB0_WD-WCC1U0056126
        wwid WDC_WD5003ABYX-01WERA0_WD-WMAYP2335378
        wwid nvme.1cc1-324a31313230303131353936-414441544120535838323030504e50-00000001
}

If you have multipath reconfigured, do not forget to rebuild the initramfs (dracut -f). It's a linux issue , and not oVirt one.

In your case you had something like this:

               /dev/VG/LV

          /dev/disk/by-id/pvuuid

     /dev/mapper/multipath-uuid

/dev/sdb

Linux will not allow you to work with /dev/sdb , when multipath is locking the block device.

Best Regards,

Strahil Nikolov

В четвъртък, 25 април 2019 г., 8:30:16 ч. Гринуич-4, Adrian Quintero <adrianquintero@gmail.com> написа:

under Compute, hosts, select the host that has the locks on /dev/sdb, /dev/sdc, etc.., select storage devices and in here is where you see a small column with a bunch of lock images showing for each row.

However as a work around, on the newly added hosts (3 total), I had to manually modify /etc/multipath.conf and add the following at the end as this is what I noticed from the original 3 node setup.

-------------------------------------------------------------

# VDSM REVISION 1.3
# VDSM PRIVATE
# BEGIN Added by gluster_hci role

blacklist {
        devnode "*"
}
# END Added by gluster_hci role
----------------------------------------------------------

After this I restarted multipath and the lock went away and was able to configure the new bricks thru the UI, however my concern is what will happen if I reboot the server will the disks be read the same way by the OS?

Also now able to expand the gluster with a new replicate 3 volume if needed using http://host4.mydomain.com:9090.

thanks again

On Thu, Apr 25, 2019 at 8:00 AM Strahil Nikolov <hunter86_bg@yahoo.com> wrote:

In which menu do you see it this way ?

Best Regards,

Strahil Nikolov

В сряда, 24 април 2019 г., 8:55:22 ч. Гринуич-4, Adrian Quintero <adrianquintero@gmail.com> написа:

Strahil,

this is the issue I am seeing now

The is thru the UI when I try to create a new brick.

So my concern is if I modify the filters on the OS what impact will that have after server reboots?

thanks,

On Mon, Apr 22, 2019 at 11:39 PM Strahil <hunter86_bg@yahoo.com> wrote:

I have edited my multipath.conf to exclude local disks , but you need to set '#VDSM private' as per the comments in the header of the file.
Otherwise, use the /dev/mapper/multipath-device notation - as you would do with any linux.

Best Regards,
Strahil NikolovOn Apr 23, 2019 01:07, adrianquintero@gmail.com wrote:
>
> Thanks Alex, that makes more sense now  while trying to follow the instructions provided I see that all my disks /dev/sdb, /dev/sdc, /dev/sdd are locked and inidicating " multpath_member" hence not letting me create new bricks. And on the logs I see
>
> Device /dev/sdb excluded by a filter.\n", "item": {"pvname": "/dev/sdb", "vgname": "gluster_vg_sdb"}, "msg": "Creating physical volume '/dev/sdb' failed", "rc": 5}
> Same thing for sdc, sdd
>
> Should I manually edit the filters inside the OS, what will be the impact?
>
> thanks again.
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