6:31 a.m.
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Hello,=0A=
=0A=
we tried to migrate our first VM into the OVirt cluster. Lacking a separate=
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host for that task we simply jumped onto on of our FC19 OVirt nodes and=0A=
installed the virt-v2v packages. Converting speed ESX->NFS is less than =0A=
10 MB/sec. OUCH!=0A=
=0A=
To make sure we have no problems in our environment we reinstalled FC19 =0A=
on the node and made a direct NFS test: 450MB/sec read speed =0A=
=0A=
Inserting node into OVirt cluster once again we are down to 15MB/sec=0A=
=0A=
Could someone clarify which kind of throtteling is activated for the Host=
=0A=
and if that might be an issue for the VMS.=0A=
=0A=
Attached a short log:=0A=
=0A=
Before Ovirt Install:=0A=
=0A=
[root@colovn01 _ISOs]# date=0A=
Mi 11. Dez 08:33:53 CET 2013=0A=
[root@colovn01 _ISOs]# pwd=0A=
/mnt/_von_nas2/_ISOs=0A=
[root@colovn01 _ISOs]# mount | grep "mnt "=0A=
10.10.30.251:/var/nas1 on /mnt type nfs4 (rw,relatime,vers=3D4.0,rsize=3D10=
48576,wsize=3D1048576,namlen=3D255,hard,proto=3Dtcp,port=3D0,timeo=3D600,re=
trans=3D2,sec=3Dsys,clientaddr=3D10.10.30.1,local_lock=3Dnone,addr=3D10.10.=
30.251)=0A=
[root@colovn01 _ISOs]# echo 3 > /proc/sys/vm/drop_caches=0A=
[root@colovn01 _ISOs]# dd if=3DSLES-10-SP2-DVD-x86_64-GM-DVD1.iso of=3D/dev=
/null=0A=
5480236+0 Datens=E4tze ein=0A=
5480236+0 Datens=E4tze aus=0A=
2805880832 Bytes (2,8 GB) kopiert, 6,13422 s, 457 MB/s=0A=
=0A=
After OVirt Install (test done twice to ensure NFS server cache is hot):=0A=
=0A=
[root@colovn01 _ISOs]# date=0A=
Mi 11. Dez 11:33:53 CET 2013=0A=
[root@colovn01 _ISOs]# pwd=0A=
/mnt/_von_nas2/_ISOs=0A=
[root@colovn01 _ISOs]# mount | grep "mnt "=0A=
10.10.30.251:/var/nas1=0A=
on /mnt type nfs4 =0A=
(rw,relatime,vers=3D4.0,rsize=3D1048576,wsize=3D1048576,namlen=3D255,hard,p=
roto=3Dtcp,port=3D0,timeo=3D600,retrans=3D2,sec=3Dsys,clientaddr=3D10.10.30=
.1,local_lock=3Dnone,addr=3D10.10.30.251)=0A=
[root@colovn01 _ISOs]# echo 3 > /proc/sys/vm/drop_caches=0A=
[root@colovn01 _ISOs]# dd if=3DSLES-10-SP2-DVD-x86_64-GM-DVD1.iso of=3D/dev=
/null=0A=
5480236+0 Datens=E4tze ein=0A=
5480236+0 Datens=E4tze aus=0A=
2805880832 Bytes (2,8 GB) kopiert, 192,587 s, 14,6 MB/s=0A=
[root@colovn01 _ISOs]# echo 3 > /proc/sys/vm/drop_caches=0A=
[root@colovn01 _ISOs]# dd if=3DSLES-10-SP2-DVD-x86_64-GM-DVD1.iso of=3D/dev=
/null=0A=
5480236+0 Datens=E4tze ein=0A=
5480236+0 Datens=E4tze aus=0A=
2805880832 Bytes (2,8 GB) kopiert, 193,131 s, 14,5 MB/s=0A=
=0A=
Markus=0A=
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Unternehmensberatung AG
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