diff options
| author |   Doug Goldstein <cardoe@cardoe.com> | 2012-10-29 00:55:53 -0500 |
|---|---|---|
| committer | Doug Goldstein <cardoe@cardoe.com> | 2013-01-12 20:39:15 -0600 |
| commit | b6773f5e8e8d9a9cf79f5fb34b78ae76589d6e2e (patch) | |
| tree | 5cb20a1da4f6a7916cd59d07cd9ca1c9ca031821 | |
| parent | Call MADV_HUGEPAGE for guest RAM allocations (diff) | |
| download | qemu-kvm-1.2.2-gentoo.tar.gz qemu-kvm-1.2.2-gentoo.tar.bz2 qemu-kvm-1.2.2-gentoo.zip | |
migrate: error message for ram_load sizeqemu-kvm-1.2.2-gentoo
Report an error when ramblock's sizes mismatch with a suggestion to the
user as to what went wrong. If a user has a managedsave state by
libvirt, which is the default now, and upgrades their distro, which in
turn upgrades QEMU, they will be surprised by the fact that their VMs fail
to start. The reason for this is that the default ROM sizes changed
recently which makes it not possible to migrate from that saved state.
However the error message really does not provide details as to what
went wrong. This patch attempts to provide more details
see:
http://lists.nongnu.org/archive/html/qemu-devel/2012-10/msg03746.html
http://lists.nongnu.org/archive/html/qemu-devel/2012-10/msg04108.html
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
(cherry picked from commit 4a9f00c12caa9e28992d76c18aeec468295bb157)
| -rw-r--r-- | arch_init.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch_init.c b/arch_init.c index f849f9b87..d38cd53b1 100644 --- a/arch_init.c +++ b/arch_init.c @@ -732,6 +732,11 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id) QLIST_FOREACH(block, &ram_list.blocks, next) { if (!strncmp(id, block->idstr, sizeof(id))) { if (block->length != length) { + fprintf(stderr, "qemu: warning: error ramblock " + "'%s' length %ld != %ld. Did you " + "change the ROM/BIOS or RAM size " + "between restarts?\n", id, + block->length, length); ret = -EINVAL; goto done; } |