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[Qemu-devel] [PATCH 00/17] make bdrv_is_allocated[_above] byte-based

From: Eric Blake
Subject: [Qemu-devel] [PATCH 00/17] make bdrv_is_allocated[_above] byte-based
Date: Tue, 11 Apr 2017 17:29:28 -0500

There are patches floating around to add NBD_CMD_BLOCK_STATUS,
but NBD wants to report status on byte granularity (even if the
reporting will probably be naturally aligned to sectors or even
much higher levels).  I've therefore started the task of
converting our block status code to report at a byte granularity
rather than sectors.

This is part one of that conversion: bdrv_is_allocated().
Other parts (still to be written) include tracking dirty bitmaps
by bytes (it's still one bit per granularity, but now we won't
be double-scaling from bytes to sectors to granularity), then
replacing bdrv_get_block_status() with a byte based callback
in all the drivers.

Available as a tag at:
git fetch git://repo.or.cz/qemu/ericb.git nbd-byte-allocated-v1

It requires v9 or later of my prior work on blkdebug:
which in turn requires Max's block-next tree:

Eric Blake (17):
  blockjob: Track job ratelimits via bytes, not sectors
  trace: Show blockjob actions via bytes, not sectors
  stream: Switch stream_populate() to byte-based
  stream: Switch stream_run() to byte-based
  commit: Switch commit_populate() to byte-based
  commit: Switch commit_run() to byte-based
  mirror: Switch MirrorBlockJob to byte-based
  mirror: Switch mirror_do_zero_or_discard() to byte-based
  mirror: Switch mirror_cow_align() to byte-based
  mirror: Switch mirror_do_read() to byte-based
  mirror: Switch mirror_iteration() to byte-based
  backup: Switch BackupBlockJob to byte-based
  backup: Switch block_backup.h to byte-based
  backup: Switch backup_do_cow() to byte-based
  backup: Switch backup_run() to byte-based
  block: Make bdrv_is_allocated() byte-based
  block: Make bdrv_is_allocated_above() byte-based

 include/block/block.h        |   6 +-
 include/block/block_backup.h |  11 +-
 include/qemu/ratelimit.h     |   3 +-
 block/backup.c               | 126 ++++++++----------
 block/commit.c               |  54 ++++----
 block/io.c                   |  59 +++++----
 block/mirror.c               | 300 ++++++++++++++++++++++---------------------
 block/replication.c          |  29 +++--
 block/stream.c               |  35 +++--
 block/vvfat.c                |  34 +++--
 migration/block.c            |   9 +-
 qemu-img.c                   |  15 ++-
 qemu-io-cmds.c               |  57 ++++----
 block/trace-events           |  14 +-
 14 files changed, 381 insertions(+), 371 deletions(-)


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