[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] remus problem

On 2011-08-29, at 10:33 PM, Pasi KÃrkkÃinen <pasik@xxxxxx> wrote:

On Mon, Aug 29, 2011 at 05:18:21PM +0800, 350608693 wrote:
  i recently study on the remus,and install xen-4.2-unstable on cetos
  5.5(x86_64),and the kernel version is

There's a newer kernel already available for dom0, but dunno if that'll help.

Did you try the drbd backend for Remus?

I added CC to Shriram, maybe he can help..

-- Pasi

  but i met a lot of problem,such as:
  1)when using the configure "disk = [
  'tap2:remus:backup:9000|aio:imgpath,xvda,w' ]",after a few minutes,the vm
  looks just as dead and can NOT log in;
Are you sure that the problem is caused by the disk configuration ?
 Is imgpath same on both machines?
 More importantly, make sure that the disk is not on a shared storage
  2)i install a centos hvm guest,and run the command "remus <domid>",error
  message is as follow:
  Disk is not replicated: tap:aio:/home/xen/tpl/hvm/base.img,xvda,w
This is a harmless error
  Segmentation fault
This is the actual issue. You ran Remus without specifying a backup host. You have enabled netbuffering but I don't know if you installed appropriate modules.
 other netfilter modules.
 Checkout the wiki page that Pasi pointed to.
  3)i install a centos pv guest,the configure file is as follows:
  name = "mailserver"
  memory = "512"
  disk = [ 'tap2:aio:/var/lib/xen/images/vmdisk.img,xvda,w', ]
  #disk = [
  #disk = [
  'tap2:remus:server02:9000|aio:/var/lib/xen/images/vmdisk.img,xvda,w' ]
  #vif = [ 'bridge=xenbr0', ]
  #vif = [ "type=ioemu,bridge=eth0, mac=00:16:3e:38:9a:ff" ]

  it can boot properly.but when run the command "remus <domid>",the error
  message is as follows:
  Disk is not replicated: tap:aio:/var/lib/xen/images/vmdisk.img,xvda,w
  WARNING: suspend event channel unavailable, falling back to slow xenstore
  PROF: suspending at 1314608468.806815
  PROF: resumed at 1314608468.828319
  PROF: flushed memory at 1314608468.829534
  PROF: suspending at 1314608469.022028
  domain 9 not shut down
  xc: error: Suspend request failed: Internal error
  xc: error: Domain appears not to have suspended: Internal error
  PROF: resumed at 1314608469.035179
I am not sure what kind of kernel is running inside centos. It seems to support xenstore based suspend but something weird is happening.

  i really do not know what to do next and how to address this problem.could
  anybody tell me how to address them?
  What's more,could anybody tell me how to install xen that supports remus
  properly and how to install PV/HVM domains and the configure file in
  details ?

Try this wiki (one of Remus users created it)

Also, in future, if you want to run remus on one system without disk replication and network buffering, try
remus -i <interval> --no-net --blackhole domname

  I would really pleasure if you could give some advices, thanks lot!


  yunjie du

Xen-users mailing list

Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.