diff options
| 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.c | |
| 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.c')
| -rw-r--r-- | qemu-nbd.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/qemu-nbd.c b/qemu-nbd.c index 0a6091b6a8..e7268d0a9f 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -33,9 +33,10 @@ #include <libgen.h> #include <pthread.h> -#define SOCKET_PATH "/var/lock/qemu-nbd-%s" -#define QEMU_NBD_OPT_CACHE 1 -#define QEMU_NBD_OPT_AIO 2 +#define SOCKET_PATH "/var/lock/qemu-nbd-%s" +#define QEMU_NBD_OPT_CACHE 1 +#define QEMU_NBD_OPT_AIO 2 +#define QEMU_NBD_OPT_DISCARD 3 static NBDExport *exp; static int verbose; @@ -330,6 +331,7 @@ int main(int argc, char **argv) #ifdef CONFIG_LINUX_AIO { "aio", 1, NULL, QEMU_NBD_OPT_AIO }, #endif + { "discard", 1, NULL, QEMU_NBD_OPT_DISCARD }, { "shared", 1, NULL, 'e' }, { "persistent", 0, NULL, 't' }, { "verbose", 0, NULL, 'v' }, @@ -344,6 +346,7 @@ int main(int argc, char **argv) int ret; int fd; bool seen_cache = false; + bool seen_discard = false; #ifdef CONFIG_LINUX_AIO bool seen_aio = false; #endif @@ -389,6 +392,15 @@ int main(int argc, char **argv) } break; #endif + case QEMU_NBD_OPT_DISCARD: + if (seen_discard) { + errx(EXIT_FAILURE, "--discard can only be specified once"); + } + seen_discard = true; + if (bdrv_parse_discard_flags(optarg, &flags) == -1) { + errx(EXIT_FAILURE, "Invalid discard mode `%s'", optarg); + } + break; case 'b': bindto = optarg; break; |