Yikuo Chan (Kevin)
2006-Apr-28 10:43 UTC
[Xen-users] number of virtual machine server limitations
Mathias Diehl
2006-Apr-28 11:54 UTC
Re:[Xen-users] number of virtual machine server limitations
Hey there, actually I don''t know about a limit that I could reach (beside my poor hardware :-)) But you may check your max_loop - as you need to extend your number of loop devices if using file backed domU''s cheers, Mat -----Original Message----- Sent: Freitag 28.04.06 18:43:54 Subject: [Xen-users] number of virtual machine server limitations>Hello > >Is xen (3.0.2) have *limit*ations to run more than 4 virtual machine at >th same time ? >I got below error measge when I create 5th virtual machine : > >xen-1:/etc/xen# xm list >Name ID Mem(MiB) VCPUs State Time(s) >Domain-0 0 256 2 r----- 1390.5 >vm1 7 512 1 -b---- 3.4 >vm2 8 512 1 -b---- 3.2 >vm3 9 512 1 -b---- 3.3 >vm4 20 512 1 r----- 1.6 >xen-1:/etc/xen# xm create vm5-centos3 >Using config file "vm5-centos3". >Error: Device 2049 (vbd) could not be connected. Backend device not found. >xen-1:/etc/xen# > > >any idea . > >yikuo chan > > > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Angel de Vicente
2006-Apr-28 12:37 UTC
[Xen-users] number of virtual machine server limitations
Hi, > Is xen (3.0.2) have *limit*ations to run more than 4 virtual machine at > th same time ? > I got below error measge when I create 5th virtual machine : > > xen-1:/etc/xen# xm list > Name ID Mem(MiB) VCPUs State Time(s) > Domain-0 0 256 2 r----- 1390.5 > vm1 7 512 1 -b---- 3.4 > vm2 8 512 1 -b---- 3.2 > vm3 9 512 1 -b---- 3.3 > vm4 20 512 1 r----- 1.6 > xen-1:/etc/xen# xm create vm5-centos3 > Using config file "vm5-centos3". > Error: Device 2049 (vbd) could not be connected. Backend device not found. > xen-1:/etc/xen# You might want to check this FAQ: http://wiki.xensource.com/xenwiki/XenFaq#head-b4167b873a6b3a6657ecf9339c44e4a0692f8ada Cheers, Angel de Vicente -- ---------------------------------- http://www.iac.es/galeria/angelv/ PostDoc Software Support Instituto de Astrofisica de Canarias _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Yikuo Chan (Kevin)
2006-Apr-30 06:56 UTC
Re: [Xen-users] number of virtual machine server limitations
hi Mathias Diehl : thanks .. after recompiler xen-3.0.2 kernel and incrace loop device it''s work fine now . don''t know why setting max_loop=32 in Grub not work for me .. cheers Yikuo Chan Mathias Diehl wrote:> Hey there, > > actually I don''t know about a limit that I could reach (beside my poor hardware :-)) > > But you may check your max_loop - as you need to extend your number of loop devices if using file backed domU''s > > cheers, > > Mat > > > -----Original Message----- > Sent: Freitag 28.04.06 18:43:54 > Subject: [Xen-users] number of virtual machine server limitations > > >> Hello >> >> Is xen (3.0.2) have *limit*ations to run more than 4 virtual machine at >> th same time ? >> I got below error measge when I create 5th virtual machine : >> >> xen-1:/etc/xen# xm list >> Name ID Mem(MiB) VCPUs State Time(s) >> Domain-0 0 256 2 r----- 1390.5 >> vm1 7 512 1 -b---- 3.4 >> vm2 8 512 1 -b---- 3.2 >> vm3 9 512 1 -b---- 3.3 >> vm4 20 512 1 r----- 1.6 >> xen-1:/etc/xen# xm create vm5-centos3 >> Using config file "vm5-centos3". >> Error: Device 2049 (vbd) could not be connected. Backend device not found. >> xen-1:/etc/xen# >> >> >> any idea . >> >> yikuo chan >> >> >> >> >> >> > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users