Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Tytus,
thanks!
I have just did some test and the slow sync occurs only with the first
syncro of the virtual disks between the 2 nodes...
When the disks are syncronized and you write data on the virtual disk,
the speed is very high!
For example: just tried to install ubuntu server on a virtual machine
with virtual disks syncronized, the sync speed was about 1 Gbit/sec !
Regards
Piero
Il 21/06/2016 11:01, Tytus Rogalewski ha scritto:
> Lol i made it :)
>
>
> Ok so i thought that it was buggy drbd9 but after 3 days of lost time
> i finally made it :)
> Before that fix i had 20mbit/s syncing but after that i have 800mbit/s
> on 1GBit :)
>
> Code:
> NET | bond0 80% | pcki 13298 | pcko 133286 | si 3879 Kbps | so 807 Mbps | coll 0 | mlti 12 | erri 0 | erro 0 | drpi 0 | drpo 0 |
> NET | eth1 80% | pcki 13298 | pcko 133286 | si 3879 Kbps | so 807 Mbps | coll 0 | mlti 12 | erri 0 | erro 0 | drpi 0 | drpo 0 |
> NET | tap0 0% | pcki 4 | pcko 4 | si 0 Kbps | so 12 Kbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 |
> NET | eth2
> it was all about stupid config file ..... and accually you need to
> edit proper config ....
>
> First of all if you have working drbd9 cluster first stop all VMs and
> then all resources on both drbd nodes:
> Code:
> drbdadm disconnect all
> Then you need to edit config (and this is what i was looking for so
> long)* /var/lib/drbd.d/drbdmanage_global_common.conf* because editing
> /etc/drbd.d/global_common.conf doesnt work at all :)
>
> Enter those settings to */var/lib/drbd.d/drbdmanage_global_common.conf
> ON BOTH NODES
> Code:
> # it must be content of /var/lib/drbd.d/drbdmanage_global_common.conf !!!!
> common {
> disk {
> on-io-error detach;
> no-disk-flushes ;
> no-disk-barrier;
> c-plan-ahead 10;
> c-fill-target 24M;
> c-min-rate 10M;
> c-max-rate 100M;
> }.
> net {
> # max-epoch-size 20000;
> max-buffers 36k;
> sndbuf-size 1024k ;
> rcvbuf-size 2048k;
> }
> }
> *
> Then simply restart drbd by:
> *
> Code:
> /etc/init.d/drbd restart
> *
> And thats it. Syncing should be at 800mbits :)
> In you have 10GBit just change c-max-rate to 1000M
> Play with those settings
>
> --
> sky-link.net <http://sky-link.net> Tytus Rogalewski
> eMail: tytanick at gmail.com <mailto:tytanick at gmail.com>
> strona: http://sky-link.net
> kom. 790 202 300
> gg: 210533
> skype: tytanick
> NIP: 9570976234
> REGON: 221197388
>
>
> 2016-06-21 11:00 GMT+02:00 Tytus Rogalewski <tytanick at gmail.com
> <mailto:tytanick at gmail.com>>:
>
> Lol i made it :)
>
>
> Ok so i thought that it was buggy drbd9 but after 3 days of lost
> time i finally made it :)
> Before that fix i had 20mbit/s syncing but after that i have
> 800mbit/s on 1GBit :)
>
> Code:
>
> NET | bond0 80% | pcki 13298 | pcko 133286 | si 3879 Kbps | so 807 Mbps | coll 0 | mlti 12 | erri 0 | erro 0 | drpi 0 | drpo 0 |
> NET | eth1 80% | pcki 13298 | pcko 133286 | si 3879 Kbps | so 807 Mbps | coll 0 | mlti 12 | erri 0 | erro 0 | drpi 0 | drpo 0 |
> NET | tap0 0% | pcki 4 | pcko 4 | si 0 Kbps | so 12 Kbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 |
> NET | eth2
>
> it was all about stupid config file ..... and accually you need to
> edit proper config ....
>
> First of all if you have working drbd9 cluster first stop all VMs
> and then all resources on both drbd nodes:
> Code:
>
> drbdadm disconnect all
>
> Then you need to edit config (and this is what i was looking for
> so long)* /var/lib/drbd.d/drbdmanage_global_common.conf* because
> editing /etc/drbd.d/global_common.conf doesnt work at all :)
>
> Enter those settings to
> */var/lib/drbd.d/drbdmanage_global_common.conf ON BOTH NODES
> Code:
>
> # it must be content of /var/lib/drbd.d/drbdmanage_global_common.conf !!!!
> common {
> disk {
> on-io-error detach;
> no-disk-flushes ;
> no-disk-barrier;
> c-plan-ahead 10;
> c-fill-target 24M;
> c-min-rate 10M;
> c-max-rate 100M;
> }.
> net {
> # max-epoch-size 20000;
> max-buffers 36k;
> sndbuf-size 1024k ;
> rcvbuf-size 2048k;
> }
> }
>
> *
> Then simply restart drbd by:
> *
> Code:
>
> /etc/init.d/drbd restart
>
> *
> And thats it. Syncing should be at 800mbits :)
> In you have 10GBit just change c-max-rate to 1000M
> Play with those settings :)
>
> --
> sky-link.net <http://sky-link.net> Tytus Rogalewski
> eMail: tytanick at gmail.com <mailto:tytanick at gmail.com>
> strona: http://sky-link.net
> kom. 790 202 300
> gg: 210533
> skype: tytanick
> NIP: 9570976234
> REGON: 221197388
>
>
> 2016-06-21 8:02 GMT+02:00 Tytus Rogalewski <tytanick at gmail.com
> <mailto:tytanick at gmail.com>>:
>
> Drbd 8.x was totally fine.
> 9.0 in proxmox 4.2 is bugged i suppose.
> I will try 8.x in 4.2
>
> 21 cze 2016 01:00 "Adam Goryachev"
> <mailinglists at websitemanagers.com.au
> <mailto:mailinglists at websitemanagers.com.au>> napisa?(a):
>
> On 20/06/16 22:47, Emmanuel Florac wrote:
>
> Le Sun, 19 Jun 2016 08:56:18 +0200
> Piero Baudino <pbaudino at formatnet.it
> <mailto:pbaudino at formatnet.it>> écrivait:
>
> Hi all,
>
> I have a cluster with 2 PVE servers with DRBD9.
> The replicated volume is about 7 Tb, the disks are
> 7200 rpm near line
> SAS. The communications channel for DRBD9 is done
> via 4 Gbit
> dedicated network cards in bond configuration
> (round robbin).
> I have created a VM with 1 Tb disk for test
> purpuse in the DRBD
> volume. After that, DRBD starts sync...
> The sync speed is about 10 Mbyte/sec
> The effective network speed misured with IPERF is
> about 3,6 Gbit/sec
>
> Is there a way to increse sync speed ?
> All the docs about this topic are related to 8.x.y
> DRBD version....
>
>
> See this thread maybe:
> http://www.gossamer-threads.com/lists/drbd/users/27675
>
>
> Stupid question perhaps, but doesn't that thread also
> relate to 8.4.x rather than 9.0.x ?
>
>
> --
> Adam Goryachev Website Managers www.websitemanagers.com.au
> <http://www.websitemanagers.com.au>
> _______________________________________________
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>
>
>
>
>
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