[Gluster-users] Gluster and bonding

[Alex K]

Hi Strahil,

On Sat, Mar 23, 2019, 21:50 Strahil <hunter86_bg at yahoo.com> wrote:

> Hi Alex,
>
> Did you setup  LACP using links to both switches ?
>
When I configured LACP (2 cables connecting the switches) servers were not
communicating with each other when one of their cables was removed (leaving
one cable at each server connected to different switches), indicating that
lacp was not functioning. Connecting the switches with one cable only
without lacp and stp enabled servers were able to reach one another though
gluster was logging stagibg errors and volumes did not start. When both
cables were connected at same switch, gluster was ok.

> Best Regards
> Strahil Nikolov
> On Mar 22, 2019 18:42, Alex K <rightkicktech at gmail.com> wrote:
>
> Hi all,
>
> I had the opportunity to test the setup on actual hardware, as I managed
> to arrange for a downtime at customer.
>
> The results were that, when cables were split between two switches, even
> though servers were able to ping each other, gluster was not able to start
> the volumes and the only relevant log I noticed was:
>
> [2019-03-21 14:16:15.043714] E [MSGID: 106153]
> [glusterd-syncop.c:113:gd_collate_errors] 0-glusterd: *Staging failed* on
> gluster2. Please check log file for details.
> [2019-03-21 14:16:15.044034] E [MSGID: 106153]
> [glusterd-syncop.c:113:gd_collate_errors] 0-glusterd: Staging failed on
> gluster2. Please check log file for details.
> [2019-03-21 14:16:15.044292] E [MSGID: 106153]
> [glusterd-syncop.c:113:gd_collate_errors] 0-glusterd: Staging failed on
> gluster2. Please check log file for details.
> [2019-03-21 14:49:11.278724] E [MSGID: 106153]
> [glusterd-syncop.c:113:gd_collate_errors] 0-glusterd: Staging failed on
> gluster2. Please check log file for details.
> [2019-03-21 14:49:40.904596] E [MSGID: 106153]
> [glusterd-syncop.c:113:gd_collate_errors] 0-glusterd: Staging failed on
> gluster1. Please check log file for details.
>
> Does anyone has any idea what does this staging error mean?
> I don't have the hardware anymore available for testing and I will try to
> reproduce on virtual env.
>
> Thanx
> Alex
>
> On Mon, Mar 18, 2019 at 12:52 PM Alex K <rightkicktech at gmail.com> wrote:
>
> Performed some tests simulating the setup on OVS.
> When using mode 6 I had mixed results for both scenarios (see below):
>
> [image: image.png]
>
> There were times that hosts were not able to reach each other (simple ping
> tests) and other time where hosts were able to reach each other with ping
> but gluster volumes were down due to connectivity issues being reported
> (endpoint is not connected). systemctl restart network usually resolved the
> gluster connectivity issue. This was regardless of the scenario (interlink
> or not). I will need to do some more tests.
>
> On Tue, Feb 26, 2019 at 4:14 PM Alex K <rightkicktech at gmail.com> wrote:
>
>
> Thank you to all for your suggestions.
>
> I came here since only gluster was having issues to start. Ping and other
> networking services were showing everything fine, so I guess there is sth
> at gluster that does not like what I tried to do.
> Unfortunately I have this system in production and I cannot experiment. It
> was a customer request to add redundancy to the switch and I went with what
> I assumed would work.
> I guess I have to have the switches stacked, but the current ones do not
> support this. They are just simple managed switches.
>
> Multiple IPs per peers could be a solution.
> I will search a little more and in case I have sth I will get back.
>
> On Tue, Feb 26, 2019 at 6:52 AM Strahil <hunter86_bg at yahoo.com> wrote:
>
> Hi Alex,
>
> As per the following ( ttps://
> community.cisco.com/t5/switching/lacp-load-balancing-in-2-switches-part-of-3750-stack-switch/td-p/2268111
> ) your switches need to be stacked in order to support lacp with your setup.
> Yet, I'm not sure if balance-alb will work with 2 separate switches -
> maybe some special configuration is needed ?!?
> As far as I know gluster can have multiple IPs matched to a single peer,
> but I'm not sure if having 2 separate networks will be used as
> active-backup or active-active.
>
>
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