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X-Received-From: 2607:f8b0:4864:20::541 Subject: [Qemu-devel] [PATCH v9 11/17] qemu-io: adds option to use aio engine X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Maxim Levitsky , Sergio Lopez , qemu-block@nongnu.org, Markus Armbruster , Max Reitz , saket.sinha89@gmail.com, Stefan Hajnoczi , Paolo Bonzini , Fam Zheng , Stefan Hajnoczi , Julia Suvorova , Aarushi Mehta Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Aarushi Mehta --- qemu-io.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/qemu-io.c b/qemu-io.c index f64eca6940..0abb4af134 100644 --- a/qemu-io.c +++ b/qemu-io.c @@ -130,7 +130,8 @@ static void open_help(void) " -C, -- use copy-on-read\n" " -n, -- disable host cache, short for -t none\n" " -U, -- force shared permissions\n" -" -k, -- use kernel AIO implementation (on Linux only)\n" +" -k, -- use kernel AIO implementation (Linux only, prefer use of -i)\n" +" -i, -- use AIO mode (threads, native or io_uring)\n" " -t, -- use the given cache mode for the image\n" " -d, -- use the given discard mode for the image\n" " -o, -- options to be given to the block driver" @@ -172,7 +173,7 @@ static int open_f(BlockBackend *blk, int argc, char **argv) QDict *opts; bool force_share = false; - while ((c = getopt(argc, argv, "snCro:kt:d:U")) != -1) { + while ((c = getopt(argc, argv, "snCro:ki:t:d:U")) != -1) { switch (c) { case 's': flags |= BDRV_O_SNAPSHOT; @@ -204,6 +205,13 @@ static int open_f(BlockBackend *blk, int argc, char **argv) return -EINVAL; } break; + case 'i': + if (bdrv_parse_aio(optarg, &flags) < 0) { + error_report("Invalid aio option: %s", optarg); + qemu_opts_reset(&empty_opts); + return -EINVAL; + } + break; case 'o': if (imageOpts) { printf("--image-opts and 'open -o' are mutually exclusive\n"); @@ -291,7 +299,9 @@ static void usage(const char *name) " -n, --nocache disable host cache, short for -t none\n" " -C, --copy-on-read enable copy-on-read\n" " -m, --misalign misalign allocations for O_DIRECT\n" -" -k, --native-aio use kernel AIO implementation (on Linux only)\n" +" -k, --native-aio use kernel AIO implementation\n" +" (Linux only, prefer use of -i)\n" +" -i, --aio=MODE use AIO mode (threads, native or io_uring)\n" " -t, --cache=MODE use the given cache mode for the image\n" " -d, --discard=MODE use the given discard mode for the image\n" " -T, --trace [[enable=]][,events=][,file=]\n" @@ -489,7 +499,7 @@ static QemuOptsList file_opts = { int main(int argc, char **argv) { int readonly = 0; - const char *sopt = "hVc:d:f:rsnCmkt:T:U"; + const char *sopt = "hVc:d:f:rsnCmki:t:T:U"; const struct option lopt[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, 'V' }, @@ -501,6 +511,7 @@ int main(int argc, char **argv) { "copy-on-read", no_argument, NULL, 'C' }, { "misalign", no_argument, NULL, 'm' }, { "native-aio", no_argument, NULL, 'k' }, + { "aio", required_argument, NULL, 'i' }, { "discard", required_argument, NULL, 'd' }, { "cache", required_argument, NULL, 't' }, { "trace", required_argument, NULL, 'T' }, @@ -568,6 +579,12 @@ int main(int argc, char **argv) case 'k': flags |= BDRV_O_NATIVE_AIO; break; + case 'i': + if (bdrv_parse_aio(optarg, &flags) < 0) { + error_report("Invalid aio option: %s", optarg); + exit(1); + } + break; case 't': if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { error_report("Invalid cache option: %s", optarg); -- 2.21.0