[Xen-users] Migration failed.

[JAJA <getchus1@xxxxxxxxx>]

Hello, Xen-users.

I am trying to use remus with drbd.(Xen 4.5)

I read next 
link(http://wiki.xenproject.org/wiki/Install_Xen_4.5_with_Remus_and_DRBD_on_Ubuntu_12.10) 
carefully and follow it.(I remove pygrub and xen-create-image comnmands 
Because I use gentoo for Dom0 Linux) But, failed with next error messages.

Error1 : When I trying to live migration,
xl migrate --live gentoo (Backup domain name)
> Saving to migration stream new xl format (info 0x3/0x0/1349)
> Loading new save file <incoming migration stream> (new xl fmt info 
> 0x3/0x0/1349)
> Savefile has mandatory flag(s) 0x2 which are not supported; need newer xl
> migration target: Domain creation failed (code -6).
> xc: info: Saving domain 5, type x86 PV
> libxl: error: libxl_utils.c:430:libxl_read_exactly: file/stream 
> truncated reading ipc msg header from domain 5 save/restore helper 
> stdout pipe
> libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain 5 
> save/restore helper [5528] died due to fatal signal Broken pipe
> migration sender: libxl_domain_suspend failed (rc=-3)
> libxl: info: libxl_exec.c:118:libxl_report_child_exitstatus: migration 
> transport process [5515] exited with error status 6
> Migration failed, resuming at sender.
> xc: error: Dom 5 not suspended: (shutdown 0, reason 255): Internal error
> libxl: error: libxl_dom_suspend.c:409:libxl__domain_resume: 
> xc_domain_resume failed for domain 5: Invalid argument
Error2 : When I trying Remus command,
xl remus -i 40 gentoo (Backup domain name)
> migration target: Ready to receive domain.
> Saving to migration stream new xl format (info 0x3/0x0/1349)
> libxl: error: libxl.c:889:libxl__remus_setup: Remus: No support for 
> network buffering
> Remus: Backup failed? resuming domain at primary.
> xc: error: Dom 5 not suspended: (shutdown 0, reason 255): Internal error
> libxl: error: libxl_dom_suspend.c:409:libxl__domain_resume: 
> xc_domain_resume failed for domain 5: Invalid argument
> Loading new save file <incoming migration stream> (new xl fmt info 
> 0x3/0x0/1349)
> Savefile has mandatory flag(s) 0x2 which are not supported; need newer xl
> migration target: Domain creation failed (code -6).
My DomU is created by following next link.
https://wiki.gentoo.org/wiki/Xen#Creating_an_Unpriviledged_Domain_.28domU.29

And this is my configuration file
> kernel = "/xen/kernel-4.0.5-DomU"
>
> memory = 2048
> name   = "gentoo"
> disk   = ['/dev/drbd1,raw,xvda1,rw,script=block-drbd']
> vif = ['bridge=br0']
> root   = "/dev/xvda1 ro"
>
> on_poweroff = 'destroy'
> on_reboot = 'restart'
> on_crash = 'restart'
I can boot DomU and DomU works perfectly. But can't migrate.
I don't know why normal migation is not working.

I have to use Ubuntu Dom0 and Ubuntu domU(HVM) in order to Remus with DRBD?

Best regards.

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