qemu/block
Jeff Cody 0a43a1b5d7 block: vhdx - log parsing, replay, and flush support
This adds support for VHDX v0 logs, as specified in Microsoft's
VHDX Specification Format v1.00:
https://www.microsoft.com/en-us/download/details.aspx?id=34750

The following support is added:

* Log parsing, and validation - validate that an existing log
  is correct.

* Log search - search through an existing log, to find any valid
  sequence of entries.

* Log replay and flush - replay an existing log, and flush/clear
  the log when complete.

The VHDX log is a circular buffer, with elements (sectors) of 4KB.

A log entry is a variably-length number of sectors, that is
comprised of a header and 'descriptors', that describe each sector.

A log may contain multiple entries, know as a log sequence.  In a log
sequence, each log entry immediately follows the previous entry, with an
incrementing sequence number.  There can only ever be one active and
valid sequence in the log.

Each log entry must match the file log GUID in order to be valid (along
with other criteria).  Once we have flushed all valid log entries, we
marked the file log GUID to be zero, which indicates a buffer with no
valid entries.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-11-07 13:58:58 +01:00
..
Makefile.objs block: vhdx - log parsing, replay, and flush support 2013-11-07 13:58:58 +01:00
backup.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
blkdebug.c blkdebug: Employ error parameter 2013-10-11 16:50:00 +02:00
blkverify.c blkverify: Employ error parameter 2013-10-11 16:50:00 +02:00
bochs.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
cloop.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
commit.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
cow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
curl.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
dmg.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
gluster.c block: introduce BlockDriver.bdrv_needs_filename to enable some drivers. 2013-09-25 16:21:28 +02:00
iscsi.c misc: New spelling fixes in comments 2013-10-26 13:01:57 +04:00
linux-aio.c aio: drop io_flush argument 2013-08-19 15:52:19 +02:00
mirror.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
nbd.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
parallels.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
qapi.c block/qapi: Human-readable ImageInfoSpecific dump 2013-10-11 10:52:54 +02:00
qcow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qcow2-cache.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2-cluster.c bswap.h: Remove cpu_to_be64wu() 2013-11-05 19:57:47 -08:00
qcow2-refcount.c qcow2: Make overlap check mask variable 2013-10-11 16:50:00 +02:00
qcow2-snapshot.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2.c qcow2: Flush image after creation 2013-10-28 17:34:32 +01:00
qcow2.h qcow2: Add more overlap check bitmask macros 2013-10-11 16:50:00 +02:00
qed-check.c qed: mark image clean after repair succeeds 2012-08-10 10:25:12 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qed.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qed.h block: qed - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:15 +02:00
raw-aio.h block: make discard asynchronous 2013-01-15 10:03:47 +01:00
raw-posix.c block/raw-posix: fix FreeBSD compilation 2013-11-07 13:53:30 +01:00
raw-win32.c block: Avoid unecessary drv->bdrv_getlength() calls 2013-10-29 13:10:26 +01:00
raw_bsd.c block: Avoid unecessary drv->bdrv_getlength() calls 2013-10-29 13:10:26 +01:00
rbd.c rbd: avoid qemu_rbd_snap_list() memory leaks 2013-09-25 16:22:00 +02:00
sheepdog.c sheepdog: check simultaneous create in resend_aioreq 2013-10-30 12:22:24 +01:00
snapshot.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
ssh.c bdrv: Use "Error" for creating images 2013-09-12 10:12:48 +02:00
stream.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
vdi.c block: vdi - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:05 +02:00
vhdx-endian.c block: vhdx - break endian translation functions out 2013-11-07 13:58:58 +01:00
vhdx-log.c block: vhdx - log parsing, replay, and flush support 2013-11-07 13:58:58 +01:00
vhdx.c block: vhdx - log parsing, replay, and flush support 2013-11-07 13:58:58 +01:00
vhdx.h block: vhdx - log parsing, replay, and flush support 2013-11-07 13:58:58 +01:00
vmdk.c vmdk: Implment bdrv_get_specific_info 2013-10-31 14:44:43 +01:00
vpc.c block/vpc: fix virtual size for images created with disk2vhd 2013-11-07 13:58:58 +01:00
vvfat.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
win32-aio.c win32-aio: drop win32_aio_flush_cb() 2013-08-22 22:05:04 +02:00