Hi, to all.
In our PVE cluster have 5 hosts with ceph storage on all hosts disks.
I setup backups to save on Synology with NFS storage.
For 2-3 moths right now backups load very long time and not fast to
finish backup from all hosts.
If we change the MTU from default 1500 on Synology and on hosts to 9000
MTU is possible to make it fast.
Synology and the hosts connect to the Fiber Optic 10GB switch but the
mtu on switch and on the hosts for now is default.
If I ping to Synology from hosts :
ping -s 9000 -d 192.168.8.23
PING 192.168.8.23 (192.168.8.23) 9000(9028) bytes of data.
9008 bytes from 192.168.8.23: icmp_seq=1 ttl=63 time=1.03 ms
9008 bytes from 192.168.8.23: icmp_seq=2 ttl=63 time=0.223 ms
9008 bytes from 192.168.8.23: icmp_seq=3 ttl=63 time=0.229 ms
I have the answer.
When I test connection with between the hosts PVE connect :
iperf3 -c 10.10.29.16
Connecting to host 10.10.29.16, port 5201
[ 5] local 10.10.29.10 port 51502 connected to 10.10.29.16 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.07 GBytes 9.19 Gbits/sec 1089 639 KBytes
[ 5] 1.00-2.00 sec 1.09 GBytes 9.38 Gbits/sec 52 1.17 MBytes
[ 5] 2.00-3.00 sec 1.09 GBytes 9.38 Gbits/sec 0 1.23 MBytes
[ 5] 3.00-4.00 sec 1.09 GBytes 9.37 Gbits/sec 0 1.27 MBytes
[ 5] 4.00-5.00 sec 1.07 GBytes 9.20 Gbits/sec 608 789 KBytes
[ 5] 5.00-6.00 sec 1.09 GBytes 9.38 Gbits/sec 45 1.09 MBytes
[ 5] 6.00-7.00 sec 1.09 GBytes 9.37 Gbits/sec 0 1.26 MBytes
[ 5] 7.00-8.00 sec 1.08 GBytes 9.28 Gbits/sec 411 872 KBytes
[ 5] 8.00-9.00 sec 1.09 GBytes 9.33 Gbits/sec 114 1.14 MBytes
[ 5] 9.00-10.00 sec 1.08 GBytes 9.30 Gbits/sec 321 676 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 10.8 GBytes 9.32 Gbits/sec 2640 sender
[ 5] 0.00-10.00 sec 10.8 GBytes 9.31 Gbits/sec
receiver
But the speed to backup to NFS is very low.
Can some one give me suggestion how I can make faster the NFS backup on
hosts (all hosts is now production).
--
Sergey TS
The best Regard
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