<div dir="ltr">Hi Joseph.<div>my shared disk is formatted with 2 slots :</div><div><div>root@debian2:~# debugfs.ocfs2 /dev/sdb -R stats | grep Slots</div><div><span style="white-space:pre"> </span>Max Node Slots: 2</div></div><div><br></div><div>I was hoping I can change it without unmounting my partition but it seems not :</div><div><div>root@debian2:~# tunefs.ocfs2 -N 3 /dev/sdb</div><div>tunefs.ocfs2: Trylock failed while opening device "/dev/sdb"</div></div><div><br></div><div>Cédric</div><div></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2017-11-09 12:54 GMT+01:00 Joseph Qi <span dir="ltr"><<a href="mailto:jiangqi903@gmail.com" target="_blank">jiangqi903@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Cédric,<br>
I guess it is because your shared disk is formatted with only 2 slots.<br>
You can check it using debugfs.ocfs2.<br>
If it is, you may update slot count using tunefs.ocfs2 -N <num_of_slot>.<br>
Hope it will help you.<br>
<br>
Thanks,<br>
Joseph<br>
<div><div class="h5"><br>
On 17/11/9 18:56, BASSAGET Cédric wrote:<br>
> Hello,<br>
> As I did not get help on users mailing list, I allow myself to post my<br>
> question here. Sorry if it's not the right place, but I can't find any<br>
> documentation.<br>
><br>
> I'm currently running an OCFS2 cluster on two hosts.<br>
> My ocfs2 partition is an iscsi disk mounted on both hosts debian1 and<br>
> debian2<br>
><br>
> I need to add a third host (debian3) to this cluster.<br>
> I've set up iscsi (& multipath), but now I'm looking for the correct way<br>
> to add the ocfs2 partition to my existing cluster.<br>
><br>
> root@debian1:~# cat /etc/ocfs2/cluster.conf<br>
> node:<br>
> ip_port = 7777<br>
> ip_address = 192.168.0.11<br>
> number = 0<br>
> name = debian1<br>
> cluster = ocfs2<br>
> node:<br>
> ip_port = 7777<br>
> ip_address = 192.168.0.12<br>
> number = 1<br>
> name = debian2<br>
> cluster = ocfs2<br>
> cluster:<br>
> node_count = 2<br>
> name = ocfs2<br>
><br>
> Same config on debian2.<br>
><br>
> I try to add the new node to the cluster, running this command on nodes<br>
> debian1 et debian2 :<br>
><br>
> root@debian1:~# o2cb_ctl -C -i -n debian3 -t node -a number=2 -a<br>
> ip_address=192.168.0.13 -a ip_port=7777 -a cluster=ocfs2<br>
><br>
> my new node is added to the config file, and node_count is incremented to 3.<br>
><br>
> then I do a "systemctl reload ocfs2" on debian1 and debian2.<br>
> I copy the cluster.conf file on debian3 and restart ocfs2 on it.<br>
><br>
> and in dmesg, I get :<br>
> [ 145.582469] o2net: Connected to node debian2 (num 1) at <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__192.168.0.12-3A7777&d=DwMFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=C7gAd4uDxlAvTdc0vmU6X8CMk6L2iDY8-HD0qT6Fo7Y&m=2EscYgpUzamy6kXer3E9ni-s4QSmWNqUMBPuy0bdPUg&s=6GK0ClcSvN8cn-ZeNxir0kxLlGwKc83XFX77IRPtZcI&e=" rel="noreferrer" target="_blank">192.168.0.12:7777</a><br>
> [ 145.582978] o2net: Connected to node debian1 (num 0) at <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__192.168.0.11-3A7777&d=DwMFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=C7gAd4uDxlAvTdc0vmU6X8CMk6L2iDY8-HD0qT6Fo7Y&m=2EscYgpUzamy6kXer3E9ni-s4QSmWNqUMBPuy0bdPUg&s=hM2TN0X94tyug5Xe3syHQDl6GCTBvQaetKLtWwdZq04&e=" rel="noreferrer" target="_blank">192.168.0.11:7777</a><br>
> [ 149.631921] o2dlm: Joining domain D2A1F74976E04C55B625CDC8DAC1D5<wbr>E5<br>
> [ 149.631922] (<br>
> [ 149.631923] 0<br>
> [ 149.631924] 1<br>
> [ 149.631924] 2<br>
> [ 149.631925] ) 3 nodes<br>
</div></div>> [ 149.634255] (mount.ocfs2,1627,0):ocfs2_<wbr>find_slot:490 *ERROR: no free<br>
> slots available!*<br>
> [ 149.634784] (mount.ocfs2,1627,0):ocfs2_<wbr>mount_volume:1859 ERROR: status =<br>
<span class="">> -22<br>
> [ 153.738044] o2dlm: Leaving domain D2A1F74976E04C55B625CDC8DAC1D5<wbr>E5<br>
> [ 153.738153] ocfs2: Unmounting device (254,0) on (node 2)<br>
> [ 153.738174] (mount.ocfs2,1627,0):ocfs2_<wbr>fill_super:1218 ERROR: status =<br>
> -22<br>
> [ 155.657295] o2net: No longer connected to node debian1 (num 0) at<br>
> <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__192.168.0.11-3A7777&d=DwMFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=C7gAd4uDxlAvTdc0vmU6X8CMk6L2iDY8-HD0qT6Fo7Y&m=2EscYgpUzamy6kXer3E9ni-s4QSmWNqUMBPuy0bdPUg&s=hM2TN0X94tyug5Xe3syHQDl6GCTBvQaetKLtWwdZq04&e=" rel="noreferrer" target="_blank">192.168.0.11:7777</a><br>
> [ 155.657387] o2net: No longer connected to node debian2 (num 1) at<br>
> <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__192.168.0.12-3A7777&d=DwMFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=C7gAd4uDxlAvTdc0vmU6X8CMk6L2iDY8-HD0qT6Fo7Y&m=2EscYgpUzamy6kXer3E9ni-s4QSmWNqUMBPuy0bdPUg&s=6GK0ClcSvN8cn-ZeNxir0kxLlGwKc83XFX77IRPtZcI&e=" rel="noreferrer" target="_blank">192.168.0.12:7777</a><br>
><br>
><br>
> Can anyone tell me how I can add a slot, so my new node can work ?<br>
><br>
> Thanks for your help.<br>
> Regards,<br>
> Cédric<br>
><br>
><br>
><br>
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><br>
</blockquote></div><br></div>