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2017-07-11block: release persistent bitmaps on inactivateVladimir Sementsov-Ogievskiy
We should release them here to reload on invalidate cache. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20170628120530.31251-31-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block/dirty-bitmap: add bdrv_remove_persistent_dirty_bitmapVladimir Sementsov-Ogievskiy
Interface for removing persistent bitmap from its storage. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 20170628120530.31251-28-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11qmp: add x-debug-block-dirty-bitmap-sha256Vladimir Sementsov-Ogievskiy
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20170628120530.31251-26-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block/dirty-bitmap: add bdrv_dirty_bitmap_next()Vladimir Sementsov-Ogievskiy
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 20170628120530.31251-19-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block: introduce persistent dirty bitmapsVladimir Sementsov-Ogievskiy
New field BdrvDirtyBitmap.persistent means, that bitmap should be saved by format driver in .bdrv_close and .bdrv_inactivate. No format driver supports it for now. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20170628120530.31251-18-vsementsov@virtuozzo.com [mreitz: Fixed indentation] Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block/dirty-bitmap: add autoload field to BdrvDirtyBitmapVladimir Sementsov-Ogievskiy
Mirror AUTO flag from Qcow2 bitmap in BdrvDirtyBitmap. This will be needed in future, to save this flag back to Qcow2 for persistent bitmaps. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20170628120530.31251-16-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block/dirty-bitmap: add readonly field to BdrvDirtyBitmapVladimir Sementsov-Ogievskiy
It will be needed in following commits for persistent bitmaps. If bitmap is loaded from read-only storage (and we can't mark it "in use" in this storage) corresponding BdrvDirtyBitmap should be read-only. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20170628120530.31251-11-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block/dirty-bitmap: fix comment for BlockDirtyBitmap.disabled fieldVladimir Sementsov-Ogievskiy
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20170628120530.31251-10-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block/dirty-bitmap: add deserialize_ones funcVladimir Sementsov-Ogievskiy
Add bdrv_dirty_bitmap_deserialize_ones() function, which is needed for qcow2 bitmap loading, to handle unallocated bitmap parts, marked as all-ones. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 20170628120530.31251-7-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11block: fix bdrv_dirty_bitmap_granularity signatureVladimir Sementsov-Ogievskiy
Make getter signature const-correct. This allows other functions with const dirty bitmap parameter use bdrv_dirty_bitmap_granularity(). Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 20170628120530.31251-6-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-06-16block: protect modification of dirty bitmaps with a mutexPaolo Bonzini
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20170605123908.18777-17-pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
2017-06-16block: introduce dirty_bitmap_mutexPaolo Bonzini
It protects only the list of dirty bitmaps; in the next patch we will also protect their content. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20170605123908.18777-15-pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
2016-10-24block: More operations for meta dirty bitmapFam Zheng
Callers can create an iterator of meta bitmap with bdrv_dirty_meta_iter_new(), then use the bdrv_dirty_iter_* operations on it. Meta iterators are also counted by bitmap->active_iterators. Also add a couple of functions to retrieve granularity and count. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1476395910-8697-11-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-10-24block: BdrvDirtyBitmap serialization interfaceVladimir Sementsov-Ogievskiy
Several functions to provide necessary access to BdrvDirtyBitmap for block-migration.c Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> [Add the "finish" parameters. - Fam] Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1476395910-8697-9-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-10-24block: Assert that bdrv_release_dirty_bitmap succeededFam Zheng
We use a loop over bs->dirty_bitmaps to make sure the caller is only releasing a bitmap owned by bs. Let's also assert that in this case the caller is releasing a bitmap that does exist. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1476395910-8697-7-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-10-24block: Add two dirty bitmap gettersFam Zheng
For dirty bitmap users to get the size and the name of a BdrvDirtyBitmap. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1476395910-8697-6-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-10-24block: Support meta dirty bitmapFam Zheng
The added group of operations enables tracking of the changed bits in the dirty bitmap. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1476395910-8697-5-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-10-24block: Hide HBitmap in block dirty bitmap interfaceFam Zheng
HBitmap is an implementation detail of block dirty bitmap that should be hidden from users. Introduce a BdrvDirtyBitmapIter to encapsulate the underlying HBitmapIter. A small difference in the interface is, before, an HBitmapIter is initialized in place, now the new BdrvDirtyBitmapIter must be dynamically allocated because the structure definition is in block/dirty-bitmap.c. Two current users are converted too. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1476395910-8697-2-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-07-19dirty-bitmap: operate with int64_t amountDenis V. Lunev
Underlying HBitmap operates even with uint64_t. Thus this change is safe. This would be useful f.e. to mark entire bitmap dirty in one call. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 1468503209-19498-2-git-send-email-den@openvz.org CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Max Reitz <mreitz@redhat.com> CC: Jeff Cody <jcody@redhat.com> Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-03-22include/qemu/osdep.h: Don't include qapi/error.hMarkus Armbruster
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the Error typedef. Since then, we've moved to include qemu/osdep.h everywhere. Its file comment explains: "To avoid getting into possible circular include dependencies, this file should not include any other QEMU headers, with the exceptions of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which are doing a similar job to this file and are under similar constraints." qapi/error.h doesn't do a similar job, and it doesn't adhere to similar constraints: it includes qapi-types.h. That's in excess of 100KiB of crap most .c files don't actually need. Add the typedef to qemu/typedefs.h, and include that instead of qapi/error.h. Include qapi/error.h in .c files that need it and don't get it now. Include qapi-types.h in qom/object.h for uint16List. Update scripts/clean-includes accordingly. Update it further to match reality: replace config.h by config-target.h, add sysemu/os-posix.h, sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h comment quoted above similarly. This reduces the number of objects depending on qapi/error.h from "all of them" to less than a third. Unfortunately, the number depending on qapi-types.h shrinks only a little. More work is needed for that one. Signed-off-by: Markus Armbruster <armbru@redhat.com> [Fix compilation without the spice devel packages. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-14block: Move block dirty bitmap code to separate filesFam Zheng
The only code change is making bdrv_dirty_bitmap_truncate public. It is used in block.c. Also two long lines (bdrv_get_dirty) are wrapped. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 1457412306-18940-5-git-send-email-famz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
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