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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [PATCH 09/36] migration: don't "write" when migration is not active |
Date: | Mon, 17 Oct 2011 08:59:22 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.21) Gecko/20110831 Lightning/1.0b2 Thunderbird/3.1.13 |
On 10/11/2011 05:00 AM, Juan Quintela wrote:
If migration is not active, just ignore writes. Signed-off-by: Juan Quintela<address@hidden> --- migration.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/migration.c b/migration.c index 7ac1fc2..090c925 100644 --- a/migration.c +++ b/migration.c @@ -323,6 +323,10 @@ ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size) FdMigrationState *s = opaque; ssize_t ret; + if (s->state != MIG_STATE_ACTIVE) { + return -EIO; + } +
Buffered file is buffered. The migration may complete before the buffer is completely drained. That means additional put_buffer calls may come after the migration state has moved to complete.
Regards, Anthony Liguori
do { ret = s->write(s, data, size); } while (ret == -1&& ((s->get_error(s)) == EINTR));
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