util: Improve os_mem_prealloc error message
Currently, when the preallocating guest memory process fails, a not
so helpful error message is printed out:
# virsh start migt10
error: Failed to start domain migt10
error: internal error: process exited while connecting to monitor:
os_mem_prealloc: failed to preallocate pages
From the error message it's not clear at the first glance where the
problem lies. However, changing the error message might give users a
clue.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 016a047..8c9d80e 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -390,7 +390,8 @@
pthread_sigmask(SIG_UNBLOCK, &set, &oldset);
if (sigsetjmp(sigjump, 1)) {
- fprintf(stderr, "os_mem_prealloc: failed to preallocate pages\n");
+ fprintf(stderr, "os_mem_prealloc: Insufficient free host memory "
+ "pages available to allocate guest RAM\n");
exit(1);
} else {
int i;
