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D2.1.4 IST-033576

tests that say "restart/timeout" then you should ﬁrst try increasing the timeout as

follows (assuming the kernel modules have already been loaded):

% make c he ck CRUT_TIMEOUT=120

The CRUT_TIMEOUT is a value in seconds, with a default of 60 (CRUT is

an acronym for Checkpoint/Restart Unit Test).

Tests marked SKIP are neither a PASS, nor a FAIL - instead they indicate a

test that was not actually run. So don’t be alarmed if you see one or more tests

marked SKIP. This happens when a given test is not applicable to your system (for

instance the hugetlbfs test is skipped when no writable mountpoint for hugetlbfs

is found).

We do not advise continuing to install BLCR if any tests FAIL (other than

timeouts correctable by raising CRUT_TIMEOUT sufﬁciently).

A.1.7 Installing BLCR

Use the standard install make target to install the BLCR utilities and libraries, and

to place the kernel modules in the standard location for your kernel:

% make i n s t a l l

or, if you prefer stripped binaries:

% make i n s t a l l −s t r i p

A.1.8 Loading the Kernel Modules

Before you can checkpoint/restart applications, the kernel modules need to be

loaded into your kernel. The kernel modules are placed into a subdirectory of the

lib/blcr (or lib64/blcr) branch of the installation directory. In this example, we’ll

assume the installation preﬁx was the default /usr/local and that your kernel is

version 2.6.12-1.234 for an x86. Thus, for this example the kernel modules are in

the directory /usr/local/lib/blcr/2.6.12-1.234/. There are three kernel modules in

this directory which must be loaded (in the correct order) for BLCR to function.

As root, load the kernel modules in this order:

# / s b i n / insmod / u s r / l o c a l / l i b / b l c r / 2 . 6 . 1 2 −1 . 2 3 4 /

b l c r _ i m p o r t s . ko

# / s b i n / insmod / u s r / l o c a l / l i b / b l c r / 2 . 6 . 1 2 −1 . 2 3 4 /

blcr_vmadump . ko

# / s b i n / insmod / u s r / l o c a l / l i b / b l c r / 2 . 6 . 1 2 −1 . 2 3 4 / b l c r .

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CDA SC510 Guida Utente Pagina 37