Knowledge Base

Switch to the correct GCC version or use a workaround

This article applies to:

• Acronis Backup & Recovery 10 Advanced Server (Agent for Linux)
• Acronis Backup & Recovery 10 Server for Linux (Standalone)
• Acronis Backup & Recovery 10 Advanced Server - Virtual Edition (Agent for Linux)

Symptoms

1. You install Acronis Backup & Recovery 10 on Linux. The product reports that the installation is successful;
2. When you start the product, there are no disks or partitions displayed;
3. Checking the running modules shows that there is no snapapi:

   lsmod | grep snapapi

4. Checking the dmesg output shows GCC related errors:

   snapapi26: disagrees about version of symbol struct_module
   snapapi26: version magic '2.6.9-67.0.7.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.2' should be '2.6.9-67.0.7.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4'

Cause

The running GCC version does not correspond to the version the kernel has been compiled with.

Solution

• If switching the GCC version is possible, then do the following:
  1. Check the running GCC version:

     # gcc --version

  2. Check the GCC version your running kernel has been compiled with:

     # cat /proc/version

  3. Switch the version to the corresponding one if GCC versions are different:

     For example

     ln -sf /usr/bin/gcc-4.1 /usr/bin/gcc

• If switching the GCC version is not possible, then do the following:
  1. Open /var/lib/dkms/snapapi26/0.7.51/source/dkms.conf in a text editor;
  2. Modify following strings:

     MAKE[0]="make -C ${kernel_source_dir} SUBDIRS=${dkms_tree}/${PACKAGE_NAME}/${PACKAGE_VERSION}/build modules"
     CLEAN="make -C ${kernel_source_dir} SUBDIRS=${dkms_tree}/${PACKAGE_NAME}/${PACKAGE_VERSION}/build clean"

     to

     MAKE[0]="make -C ${kernel_source_dir} CC=/usr/bin/i386-redhat-linux-gcc SUBDIRS=${dkms_tree}/${PACKAGE_NAME}/${PACKAGE_VERSION}/build modules"
     CLEAN="make -C ${kernel_source_dir} CC=/usr/bin/i386-redhat-linux-gcc SUBDIRS=${dkms_tree}/${PACKAGE_NAME}/${PACKAGE_VERSION}/build clean"

     where snapapi26 version 0.7.51 is the latest one used in Acronis Backup & Recovery 10.

     and /usr/bin/i386-redhat-linux-gcc path corresponds to the GCC version your running kernel was compiled with (cat /proc/version).

More information

Feel free to contact Acronis Customer Central if you have further questions or need assistance.