diff options
| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | Makefile.objs | 3 | ||||
| -rw-r--r-- | block/monitor/Makefile.objs | 1 | ||||
| -rw-r--r-- | block/monitor/bitmap-qmp-cmds.c | 321 | ||||
| -rw-r--r-- | blockdev.c | 284 |
5 files changed, 324 insertions, 286 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 4e99bb05da..87a412c229 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2018,6 +2018,7 @@ L: qemu-block@nongnu.org S: Supported F: include/qemu/hbitmap.h F: include/block/dirty-bitmap.h +F: block/monitor/bitmap-qmp-cmds.c F: block/dirty-bitmap.c F: block/qcow2-bitmap.c F: migration/block-dirty-bitmap.c diff --git a/Makefile.objs b/Makefile.objs index a7c967633a..99774cfd25 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -13,9 +13,8 @@ chardev-obj-y = chardev/ authz-obj-y = authz/ -block-obj-y = nbd/ +block-obj-y = block/ block/monitor/ nbd/ scsi/ block-obj-y += block.o blockjob.o job.o -block-obj-y += block/ scsi/ block-obj-y += qemu-io-cmds.o block-obj-$(CONFIG_REPLICATION) += replication.o diff --git a/block/monitor/Makefile.objs b/block/monitor/Makefile.objs index 0a74f9a8b5..39acf85022 100644 --- a/block/monitor/Makefile.objs +++ b/block/monitor/Makefile.objs @@ -1 +1,2 @@ common-obj-y += block-hmp-cmds.o +block-obj-y += bitmap-qmp-cmds.o diff --git a/block/monitor/bitmap-qmp-cmds.c b/block/monitor/bitmap-qmp-cmds.c new file mode 100644 index 0000000000..9f11deec64 --- /dev/null +++ b/block/monitor/bitmap-qmp-cmds.c @@ -0,0 +1,321 @@ +/* + * QEMU block dirty bitmap QMP commands + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * later. See the COPYING file in the top-level directory. + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" + +#include "block/block_int.h" +#include "qapi/qapi-commands-block.h" +#include "qapi/error.h" + +/** + * block_dirty_bitmap_lookup: + * Return a dirty bitmap (if present), after validating + * the node reference and bitmap names. + * + * @node: The name of the BDS node to search for bitmaps + * @name: The name of the bitmap to search for + * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. + * @errp: Output pointer for error information. Can be NULL. + * + * @return: A bitmap object on success, or NULL on failure. + */ +BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, + const char *name, + BlockDriverState **pbs, + Error **errp) +{ + BlockDriverState *bs; + BdrvDirtyBitmap *bitmap; + + if (!node) { + error_setg(errp, "Node cannot be NULL"); + return NULL; + } + if (!name) { + error_setg(errp, "Bitmap name cannot be NULL"); + return NULL; + } + bs = bdrv_lookup_bs(node, node, NULL); + if (!bs) { + error_setg(errp, "Node '%s' not found", node); + return NULL; + } + + bitmap = bdrv_find_dirty_bitmap(bs, name); + if (!bitmap) { + error_setg(errp, "Dirty bitmap '%s' not found", name); + return NULL; + } + + if (pbs) { + *pbs = bs; + } + + return bitmap; +} + +void qmp_block_dirty_bitmap_add(const char *node, const char *name, + bool has_granularity, uint32_t granularity, + bool has_persistent, bool persistent, + bool has_disabled, bool disabled, + Error **errp) +{ + BlockDriverState *bs; + BdrvDirtyBitmap *bitmap; + AioContext *aio_context; + + if (!name || name[0] == '\0') { + error_setg(errp, "Bitmap name cannot be empty"); + return; + } + + bs = bdrv_lookup_bs(node, node, errp); + if (!bs) { + return; + } + + aio_context = bdrv_get_aio_context(bs); + aio_context_acquire(aio_context); + + if (has_granularity) { + if (granularity < 512 || !is_power_of_2(granularity)) { + error_setg(errp, "Granularity must be power of 2 " + "and at least 512"); + goto out; + } + } else { + /* Default to cluster size, if available: */ + granularity = bdrv_get_default_bitmap_granularity(bs); + } + + if (!has_persistent) { + persistent = false; + } + + if (!has_disabled) { + disabled = false; + } + + if (persistent && + !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) + { + goto out; + } + + bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp); + if (bitmap == NULL) { + goto out; + } + + if (disabled) { + bdrv_disable_dirty_bitmap(bitmap); + } + + bdrv_dirty_bitmap_set_persistence(bitmap, persistent); + +out: + aio_context_release(aio_context); +} + +BdrvDirtyBitmap *block_dirty_bitmap_remove(const char *node, const char *name, + bool release, + BlockDriverState **bitmap_bs, + Error **errp) +{ + BlockDriverState *bs; + BdrvDirtyBitmap *bitmap; + AioContext *aio_context; + + bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); + if (!bitmap || !bs) { + return NULL; + } + + aio_context = bdrv_get_aio_context(bs); + aio_context_acquire(aio_context); + + if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY | BDRV_BITMAP_RO, + errp)) { + aio_context_release(aio_context); + return NULL; + } + + if (bdrv_dirty_bitmap_get_persistence(bitmap) && + bdrv_remove_persistent_dirty_bitmap(bs, name, errp) < 0) + { + aio_context_release(aio_context); + return NULL; + } + + if (release) { + bdrv_release_dirty_bitmap(bitmap); + } + + if (bitmap_bs) { + *bitmap_bs = bs; + } + + aio_context_release(aio_context); + return release ? NULL : bitmap; +} + +void qmp_block_dirty_bitmap_remove(const char *node, const char *name, + Error **errp) +{ + block_dirty_bitmap_remove(node, name, true, NULL, errp); +} + +/** + * Completely clear a bitmap, for the purposes of synchronizing a bitmap + * immediately after a full backup operation. + */ +void qmp_block_dirty_bitmap_clear(const char *node, const char *name, + Error **errp) +{ + BdrvDirtyBitmap *bitmap; + BlockDriverState *bs; + + bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); + if (!bitmap || !bs) { + return; + } + + if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_DEFAULT, errp)) { + return; + } + + bdrv_clear_dirty_bitmap(bitmap, NULL); +} + +void qmp_block_dirty_bitmap_enable(const char *node, const char *name, + Error **errp) +{ + BlockDriverState *bs; + BdrvDirtyBitmap *bitmap; + + bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); + if (!bitmap) { + return; + } + + if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { + return; + } + + bdrv_enable_dirty_bitmap(bitmap); +} + +void qmp_block_dirty_bitmap_disable(const char *node, const char *name, + Error **errp) +{ + BlockDriverState *bs; + BdrvDirtyBitmap *bitmap; + + bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); + if (!bitmap) { + return; + } + + if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { + return; + } + + bdrv_disable_dirty_bitmap(bitmap); +} + +BdrvDirtyBitmap *block_dirty_bitmap_merge(const char *node, const char *target, + BlockDirtyBitmapMergeSourceList *bms, + HBitmap **backup, Error **errp) +{ + BlockDriverState *bs; + BdrvDirtyBitmap *dst, *src, *anon; + BlockDirtyBitmapMergeSourceList *lst; + Error *local_err = NULL; + + dst = block_dirty_bitmap_lookup(node, target, &bs, errp); + if (!dst) { + return NULL; + } + + anon = bdrv_create_dirty_bitmap(bs, bdrv_dirty_bitmap_granularity(dst), + NULL, errp); + if (!anon) { + return NULL; + } + + for (lst = bms; lst; lst = lst->next) { + switch (lst->value->type) { + const char *name, *node; + case QTYPE_QSTRING: + name = lst->value->u.local; + src = bdrv_find_dirty_bitmap(bs, name); + if (!src) { + error_setg(errp, "Dirty bitmap '%s' not found", name); + dst = NULL; + goto out; + } + break; + case QTYPE_QDICT: + node = lst->value->u.external.node; + name = lst->value->u.external.name; + src = block_dirty_bitmap_lookup(node, name, NULL, errp); + if (!src) { + dst = NULL; + goto out; + } + break; + default: + abort(); + } + + bdrv_merge_dirty_bitmap(anon, src, NULL, &local_err); + if (local_err) { + error_propagate(errp, local_err); + dst = NULL; + goto out; + } + } + + /* Merge into dst; dst is unchanged on failure. */ + bdrv_merge_dirty_bitmap(dst, anon, backup, errp); + + out: + bdrv_release_dirty_bitmap(anon); + return dst; +} + +void qmp_block_dirty_bitmap_merge(const char *node, const char *target, + BlockDirtyBitmapMergeSourceList *bitmaps, + Error **errp) +{ + block_dirty_bitmap_merge(node, target, bitmaps, NULL, errp); +} diff --git a/blockdev.c b/blockdev.c index 69a30613a3..72df193ca7 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1185,53 +1185,6 @@ out_aio_context: return NULL; } -/** - * block_dirty_bitmap_lookup: - * Return a dirty bitmap (if present), after validating - * the node reference and bitmap names. - * - * @node: The name of the BDS node to search for bitmaps - * @name: The name of the bitmap to search for - * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. - * @errp: Output pointer for error information. Can be NULL. - * - * @return: A bitmap object on success, or NULL on failure. - */ -BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, - const char *name, - BlockDriverState **pbs, - Error **errp) -{ - BlockDriverState *bs; - BdrvDirtyBitmap *bitmap; - - if (!node) { - error_setg(errp, "Node cannot be NULL"); - return NULL; - } - if (!name) { - error_setg(errp, "Bitmap name cannot be NULL"); - return NULL; - } - bs = bdrv_lookup_bs(node, node, NULL); - if (!bs) { - error_setg(errp, "Node '%s' not found", node); - return NULL; - } - - bitmap = bdrv_find_dirty_bitmap(bs, name); - if (!bitmap) { - error_setg(errp, "Dirty bitmap '%s' not found", name); - return NULL; - } - - if (pbs) { - *pbs = bs; - } - - return bitmap; -} - /* New and old BlockDriverState structs for atomic group operations */ typedef struct BlkActionState BlkActionState; @@ -2432,243 +2385,6 @@ void qmp_block_passwd(bool has_device, const char *device, "Setting block passwords directly is no longer supported"); } -void qmp_block_dirty_bitmap_add(const char *node, const char *name, - bool has_granularity, uint32_t granularity, - bool has_persistent, bool persistent, - bool has_disabled, bool disabled, - Error **errp) -{ - BlockDriverState *bs; - BdrvDirtyBitmap *bitmap; - AioContext *aio_context; - - if (!name || name[0] == '\0') { - error_setg(errp, "Bitmap name cannot be empty"); - return; - } - - bs = bdrv_lookup_bs(node, node, errp); - if (!bs) { - return; - } - - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); - - if (has_granularity) { - if (granularity < 512 || !is_power_of_2(granularity)) { - error_setg(errp, "Granularity must be power of 2 " - "and at least 512"); - goto out; - } - } else { - /* Default to cluster size, if available: */ - granularity = bdrv_get_default_bitmap_granularity(bs); - } - - if (!has_persistent) { - persistent = false; - } - - if (!has_disabled) { - disabled = false; - } - - if (persistent && - !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) - { - goto out; - } - - bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp); - if (bitmap == NULL) { - goto out; - } - - if (disabled) { - bdrv_disable_dirty_bitmap(bitmap); - } - - bdrv_dirty_bitmap_set_persistence(bitmap, persistent); - -out: - aio_context_release(aio_context); -} - -BdrvDirtyBitmap *block_dirty_bitmap_remove(const char *node, const char *name, - bool release, - BlockDriverState **bitmap_bs, - Error **errp) -{ - BlockDriverState *bs; - BdrvDirtyBitmap *bitmap; - AioContext *aio_context; - - bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); - if (!bitmap || !bs) { - return NULL; - } - - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); - - if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY | BDRV_BITMAP_RO, - errp)) { - aio_context_release(aio_context); - return NULL; - } - - if (bdrv_dirty_bitmap_get_persistence(bitmap) && - bdrv_remove_persistent_dirty_bitmap(bs, name, errp) < 0) - { - aio_context_release(aio_context); - return NULL; - } - - if (release) { - bdrv_release_dirty_bitmap(bitmap); - } - - if (bitmap_bs) { - *bitmap_bs = bs; - } - - aio_context_release(aio_context); - return release ? NULL : bitmap; -} - -void qmp_block_dirty_bitmap_remove(const char *node, const char *name, - Error **errp) -{ - block_dirty_bitmap_remove(node, name, true, NULL, errp); -} - -/** - * Completely clear a bitmap, for the purposes of synchronizing a bitmap - * immediately after a full backup operation. - */ -void qmp_block_dirty_bitmap_clear(const char *node, const char *name, - Error **errp) -{ - BdrvDirtyBitmap *bitmap; - BlockDriverState *bs; - - bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); - if (!bitmap || !bs) { - return; - } - - if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_DEFAULT, errp)) { - return; - } - - bdrv_clear_dirty_bitmap(bitmap, NULL); -} - -void qmp_block_dirty_bitmap_enable(const char *node, const char *name, - Error **errp) -{ - BlockDriverState *bs; - BdrvDirtyBitmap *bitmap; - - bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); - if (!bitmap) { - return; - } - - if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { - return; - } - - bdrv_enable_dirty_bitmap(bitmap); -} - -void qmp_block_dirty_bitmap_disable(const char *node, const char *name, - Error **errp) -{ - BlockDriverState *bs; - BdrvDirtyBitmap *bitmap; - - bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); - if (!bitmap) { - return; - } - - if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { - return; - } - - bdrv_disable_dirty_bitmap(bitmap); -} - -BdrvDirtyBitmap *block_dirty_bitmap_merge(const char *node, const char *target, - BlockDirtyBitmapMergeSourceList *bms, - HBitmap **backup, Error **errp) -{ - BlockDriverState *bs; - BdrvDirtyBitmap *dst, *src, *anon; - BlockDirtyBitmapMergeSourceList *lst; - Error *local_err = NULL; - - dst = block_dirty_bitmap_lookup(node, target, &bs, errp); - if (!dst) { - return NULL; - } - - anon = bdrv_create_dirty_bitmap(bs, bdrv_dirty_bitmap_granularity(dst), - NULL, errp); - if (!anon) { - return NULL; - } - - for (lst = bms; lst; lst = lst->next) { - switch (lst->value->type) { - const char *name, *node; - case QTYPE_QSTRING: - name = lst->value->u.local; - src = bdrv_find_dirty_bitmap(bs, name); - if (!src) { - error_setg(errp, "Dirty bitmap '%s' not found", name); - dst = NULL; - goto out; - } - break; - case QTYPE_QDICT: - node = lst->value->u.external.node; - name = lst->value->u.external.name; - src = block_dirty_bitmap_lookup(node, name, NULL, errp); - if (!src) { - dst = NULL; - goto out; - } - break; - default: - abort(); - } - - bdrv_merge_dirty_bitmap(anon, src, NULL, &local_err); - if (local_err) { - error_propagate(errp, local_err); - dst = NULL; - goto out; - } - } - - /* Merge into dst; dst is unchanged on failure. */ - bdrv_merge_dirty_bitmap(dst, anon, backup, errp); - - out: - bdrv_release_dirty_bitmap(anon); - return dst; -} - -void qmp_block_dirty_bitmap_merge(const char *node, const char *target, - BlockDirtyBitmapMergeSourceList *bitmaps, - Error **errp) -{ - block_dirty_bitmap_merge(node, target, bitmaps, NULL, errp); -} - BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, const char *name, Error **errp) |