Message ID | 1351959772-21473-1-git-send-email-cardoe@cardoe.com |
---|---|
State | New |
Headers | show |
On 11/03/2012 10:22 AM, Doug Goldstein wrote: > 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 > --- Missing a Signed-off-by; see http://wiki.qemu-project.org/Contribute/SubmitAPatch
diff --git a/arch_init.c b/arch_init.c index 8c3bb0d..33f783b 100644 --- a/arch_init.c +++ b/arch_init.c @@ -810,6 +810,11 @@ 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; }