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util: Improve os_mem_prealloc error message

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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>
This commit is contained in:
Michal Privoznik 2014-10-16 15:13:32 +02:00 committed by Michael Tokarev
parent 2944d742f7
commit 404ac83efd
1 changed files with 2 additions and 1 deletions
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3
util/oslib-posix.c
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@ -390,7 +390,8 @@ void os_mem_prealloc(int fd, char *area, size_t memory)
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;