From patchwork Wed Apr 21 05:57:19 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshiaki Tamura X-Patchwork-Id: 93806 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o3L62Lmb005310 for ; Wed, 21 Apr 2010 06:02:23 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752195Ab0DUGCG (ORCPT ); Wed, 21 Apr 2010 02:02:06 -0400 Received: from sh.osrg.net ([192.16.179.4]:58778 "EHLO sh.osrg.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751876Ab0DUGCB (ORCPT ); Wed, 21 Apr 2010 02:02:01 -0400 Received: from fs.osrg.net (postfix@fs.osrg.net [10.0.0.12]) by sh.osrg.net (8.14.3/8.14.3/OSRG-NET) with ESMTP id o3L61QGI004088; Wed, 21 Apr 2010 15:01:26 +0900 Received: from localhost (hype-wd0.osrg.net [10.72.1.16]) by fs.osrg.net (Postfix) with ESMTP id 44FCD3E02FB; Wed, 21 Apr 2010 15:01:25 +0900 (JST) From: Yoshiaki Tamura To: kvm@vger.kernel.org, qemu-devel@nongnu.org Cc: avi@redhat.com, aliguori@us.ibm.com, mtosatti@redhat.com, ohmura.kei@lab.ntt.co.jp, yoshikawa.takuya@oss.ntt.co.jp, Yoshiaki Tamura Subject: [RFC PATCH 14/20] Upgrade QEMU_FILE_VERSION from 3 to 4, and introduce qemu_savevm_state_all(). Date: Wed, 21 Apr 2010 14:57:19 +0900 Message-Id: <1271829445-5328-15-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> X-Mailer: git-send-email 1.7.0.31.g1df487 In-Reply-To: <1271829445-5328-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> References: <1271829445-5328-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> X-Dispatcher: imput version 20070423(IM149) Lines: 132 X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Wed, 21 Apr 2010 06:02:23 +0000 (UTC) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (sh.osrg.net [192.16.179.4]); Wed, 21 Apr 2010 15:01:26 +0900 (JST) X-Virus-Scanned: clamav-milter 0.95.3 at sh X-Virus-Status: Clean Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org diff --git a/savevm.c b/savevm.c index 292ae32..19b3efb 100644 --- a/savevm.c +++ b/savevm.c @@ -1402,8 +1402,10 @@ static void vmstate_save(QEMUFile *f, SaveStateEntry *se) } #define QEMU_VM_FILE_MAGIC 0x5145564d -#define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 -#define QEMU_VM_FILE_VERSION 0x00000003 +#define QEMU_VM_FILE_VERSION_COMPAT 0x00000003 +#define QEMU_VM_FILE_VERSION 0x00000004 +#define QEMU_VM_LIVE_MIGRATION_MODE 0x00000005 +#define QEMU_VM_FT_MODE 0x00000006 #define QEMU_VM_EOF 0x00 #define QEMU_VM_SECTION_START 0x01 @@ -1425,6 +1427,12 @@ int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, qemu_put_be32(f, QEMU_VM_FILE_MAGIC); qemu_put_be32(f, QEMU_VM_FILE_VERSION); + + if (ft_mode) { + qemu_put_be32(f, QEMU_VM_FT_MODE); + } else { + qemu_put_be32(f, QEMU_VM_LIVE_MIGRATION_MODE); + } QTAILQ_FOREACH(se, &savevm_handlers, entry) { int len; @@ -1533,6 +1541,66 @@ int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f) return 0; } +int qemu_savevm_state_all(Monitor *mon, QEMUFile *f) +{ + SaveStateEntry *se; + + QTAILQ_FOREACH(se, &savevm_handlers, entry) { + int len; + + if (se->save_live_state == NULL) + continue; + + /* Section type */ + qemu_put_byte(f, QEMU_VM_SECTION_START); + qemu_put_be32(f, se->section_id); + + /* ID string */ + len = strlen(se->idstr); + qemu_put_byte(f, len); + qemu_put_buffer(f, (uint8_t *)se->idstr, len); + + qemu_put_be32(f, se->instance_id); + qemu_put_be32(f, se->version_id); + if (ft_mode == FT_INIT) { + /* This is workaround. */ + se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); + } else { + se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); + } + } + + ft_mode = FT_TRANSACTION; + QTAILQ_FOREACH(se, &savevm_handlers, entry) { + int len; + + if (se->save_state == NULL && se->vmsd == NULL) + continue; + + /* Section type */ + qemu_put_byte(f, QEMU_VM_SECTION_FULL); + qemu_put_be32(f, se->section_id); + + /* ID string */ + len = strlen(se->idstr); + qemu_put_byte(f, len); + qemu_put_buffer(f, (uint8_t *)se->idstr, len); + + qemu_put_be32(f, se->instance_id); + qemu_put_be32(f, se->version_id); + + vmstate_save(f, se); + } + + qemu_put_byte(f, QEMU_VM_EOF); + + if (qemu_file_has_error(f)) + return -EIO; + + return 0; +} + + void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f) { SaveStateEntry *se; @@ -1617,6 +1685,10 @@ int qemu_loadvm_state(QEMUFile *f, int skip_header) if (v != QEMU_VM_FILE_VERSION) return -ENOTSUP; + v = qemu_get_be32(f); + if (v == QEMU_VM_FT_MODE) { + ft_mode = FT_INIT; + } } while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { diff --git a/sysemu.h b/sysemu.h index 6c1441f..df314bb 100644 --- a/sysemu.h +++ b/sysemu.h @@ -67,6 +67,7 @@ int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, int shared); int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f); int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f); +int qemu_savevm_state_all(Monitor *mon, QEMUFile *f); void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f); int qemu_loadvm_state(QEMUFile *f, int skip_header);