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| author | Anthony Liguori <aliguori@us.ibm.com> | 2013-02-26 07:44:39 -0600 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-02-26 07:44:39 -0600 |
| commit | 864a556e9a800116a305f10fbb714268ca7e9bc3 (patch) | |
| tree | c9e5fdc33d2a1be16446c7504106b4f128e3d0cd /qemu-nbd.texi | |
| parent | 9a1d7f00efd4b69f051d4223a70ca91af0ccb19d (diff) | |
| parent | bf3caa3dc17552b323cec6831301a22cfc98ecd5 (diff) | |
Merge remote-tracking branch 'kwolf/for-anthony' into staging
# By Paolo Bonzini (7) and others
# Via Kevin Wolf
* kwolf/for-anthony: (22 commits)
pc: add compatibility machine types for 1.4
blockdev: enable discard by default
qemu-nbd: add --discard option
blockdev: add discard suboption to -drive
block: implement BDRV_O_UNMAP
block: complete all IOs before .bdrv_truncate
coroutine: trim down nesting level in perf_nesting test
coroutine: move pooling to common code
qemu-iotests: Test qcow2 image creation options
qemu-iotests: Add qemu-img compare test
qemu-img: Add compare subcommand
qemu-img: Add "Quiet mode" option
block: Add synchronous wrapper for bdrv_co_is_allocated_above
block: refuse negative iops and bps values
block: use Error in do_check_io_limits()
qcow2: support compressed clusters in BlockFragInfo
qemu-img: add compressed clusters to BlockFragInfo
qemu-img: fix missing space in qemu-img check output
qcow2: record fragmentation statistics during check
qcow2: introduce check_refcounts_l1/l2() flags
...
Diffstat (limited to 'qemu-nbd.texi')
| -rw-r--r-- | qemu-nbd.texi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/qemu-nbd.texi b/qemu-nbd.texi index 3e57200e76..5f3f3e3276 100644 --- a/qemu-nbd.texi +++ b/qemu-nbd.texi @@ -35,6 +35,10 @@ Export QEMU disk image using NBD protocol. @item --aio=@var{aio} choose asynchronous I/O mode between @samp{threads} (the default) and @samp{native} (Linux only). +@item --discard=@var{discard} + toggles whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap}) + requests are ignored or passed to the filesystem. The default is no + (@samp{--discard=ignore}). @item -c, --connect=@var{dev} connect @var{filename} to NBD device @var{dev} @item -d, --disconnect |