Installing Acronis Backup & Recovery Agent for Linux v10 on Xen based kernel

http://kb.acronis.com/content/9766 ?

This article is good as long as target Linux VM is based on RedHat el5 kernel. In my case I run SLES 11 SP1 and obviously compiled kernel module on el5 is incompatible on target host and cannot be loaded due to invalid module format.

DDK kernel: 2.6.18-128.1.6.el5.xs5.5.0.505.1024xen
Target Host: 2.6.32.27-0.2-xen (SLES11SP1)

Any ideas where to retrieve 2.6.32.27-0.2-xen or 2.6.32.29-0.3-xen headers for SLES from? Meanwhile will try contacting Novell directly.

Update from Novell. Kernel source code rpm is the same for xen and native kernels.

All the kernel sources are installed in /usr/src/linux-2.6.32.29-0.3/kernel

So I created extra symbolic link pointing to source files:
/lib/modules/2.6.32.29-0.3-xen/source -> /usr/src/linux-2.6.32.29-0.3/kernel

but so far no luck.

uname -r
2.6.32.29-0.3-xen

rpm -qa |grep kernel
kernel-xen-base-2.6.32.29-0.3.1
kernel-xen-2.6.32.29-0.3.1
linux-kernel-headers-2.6.32-1.4.13
kernel-source-2.6.32.29-0.3.1

dkms build -m snapapi26 -v 0.7.54 -k $(uname -r) --arch $(uname -m) --config /boot/config-$(uname -r) --kernelsourcedir /lib/modules/$(uname -r)/source

Error! Your kernel source for kernel 2.6.32.29-0.3-xen cannot be found at /lib/modules/2.6.32.29-0.3-xen/build or /lib/modules/2.6.32.29-0.3-xen/source.
You can use the --kernelsourcedir option to tell DKMS where it's located.

#with specific path
dkms build -m snapapi26 -v 0.7.54 -k $(uname -r) --arch $(uname -m) --config /boot/config-$(uname -r) --kernelsourcedir /usr/src/linux-2.6.32.29-0.3/kernel/

Error! Your kernel source for kernel 2.6.32.29-0.3-xen cannot be found at
/lib/modules/2.6.32.29-0.3-xen/build or /lib/modules/2.6.32.29-0.3-xen/source.
You can use the --kernelsourcedir option to tell DKMS where it's located.

I hope there is something simple here, but so far can't figure out.

Problem solved. Applying steps from couple of other links with some minor modifications allowed to build Acronis Agent on Suse SLES Xen based kernel running as a guest on XenServer.

Linux Client on SLES 11
=======================
1. Install need packets for build
# zypper in kernel-xen-base kernel-source kernel-syms linux-kernel-headers gcc

cd /usr/src/linux
#http://forum.acronis.com/forum/9769#comments
zcat /boot/symvers-2.6.32.29-0.3-xen.gz > Module.symvers
make cloneconfig
make modules_prepare

#dkms remove -m snapapi26 -v 0.7.54 –all
# download last snapapi26 from http://kb.acronis.com/content/9317
# wget -c http://kb.acronis.com/sites/default/files/content/2010/03/9317/snapapi2…
wget AcronisAgentLinux_v.10.0.12708.i686
chmod +x AcronisAgentLinux_v.10.0.12708.i686
./AcronisAgentLinux_v.10.0.12708.i686

#if kernet module build fails – follow dkms manual rebuild steps below.
#on SLES set:
vi /etc/modprobe.d/unsupported-modules and set to 1
#make sure driver loads
modprobe snapapi26 && lsmod | grep snapapi26
reboot

#Open up firewall for TCP 9876
#Add machine into AMS
#Apply Backup Policy
#Do first full backup
#All Done!!!

#dkms manual rebuild steps
dkms ldtarball --archive /usr/lib/Acronis/kernel_modules/snapapi26-0.7.54-all.tar.gz

#dkms build -m snapapi26 -v 0.7.54 -k $(uname -r) --arch $(uname -m) --config /boot/config-$(uname -r) --kernelsourcedir /usr/src/linux

dkms build -m snapapi26 -v 0.7.54
dkms install -m snapapi26 -v 0.7.54

modprobe snapapi26 --allow-unsupported

#moving to other server
From: http://kb.acronis.com/content/9766
1. from Copy the created file snapapi26.ko to /lib/modules/`uname -r`/kernel/drivers/block directory of the host machine;
2. Recreate the list of module dependencies:
# depmod

#on SLES:
vi /etc/modprobe.d/unsupported-modules and set to 1

3. Make sure the driver can load:
# modprobe snapapi26 && lsmod | grep snapapi26

Hello Saulius,

From your initial post, I guess that the machine has a XEN hypervisor running.

Are you trying to backup the host, as well as all the virtual machines with the single Linux agent?

Thanks,
Asier