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[Qemu-block] [PATCH v8 07/36] qemu-img: Add "-L" option to sub commands
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From: |
Fam Zheng |
|
Subject: |
[Qemu-block] [PATCH v8 07/36] qemu-img: Add "-L" option to sub commands |
|
Date: |
Fri, 30 Sep 2016 20:09:37 +0800 |
If specified, BDRV_O_NO_LOCK flag will be set when opening the image.
Signed-off-by: Fam Zheng <address@hidden>
---
qemu-img.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++-------------
1 file changed, 72 insertions(+), 19 deletions(-)
diff --git a/qemu-img.c b/qemu-img.c
index ceffefe..e8d0e78 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -616,6 +616,7 @@ static int img_check(int argc, char **argv)
ImageCheck *check;
bool quiet = false;
bool image_opts = false;
+ bool nolock = false;
fmt = NULL;
output = NULL;
@@ -632,7 +633,7 @@ static int img_check(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "hf:r:T:q",
+ c = getopt_long(argc, argv, "hf:r:T:qL",
long_options, &option_index);
if (c == -1) {
break;
@@ -666,6 +667,9 @@ static int img_check(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
@@ -699,6 +703,7 @@ static int img_check(int argc, char **argv)
return 1;
}
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid source cache option: %s", cache);
@@ -819,6 +824,7 @@ static int img_commit(int argc, char **argv)
Error *local_err = NULL;
CommonBlockJobCBInfo cbi;
bool image_opts = false;
+ bool nolock = false;
fmt = NULL;
cache = BDRV_DEFAULT_CACHE;
@@ -830,7 +836,7 @@ static int img_commit(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "f:ht:b:dpq",
+ c = getopt_long(argc, argv, "f:ht:b:dpqL",
long_options, NULL);
if (c == -1) {
break;
@@ -860,6 +866,9 @@ static int img_commit(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
@@ -891,6 +900,7 @@ static int img_commit(int argc, char **argv)
}
flags = BDRV_O_RDWR | BDRV_O_UNMAP;
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid cache option: %s", cache);
@@ -1149,6 +1159,7 @@ static int img_compare(int argc, char **argv)
int c, pnum;
uint64_t progress_base;
bool image_opts = false;
+ bool nolock = false;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
@@ -1158,7 +1169,7 @@ static int img_compare(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "hf:F:T:pqs",
+ c = getopt_long(argc, argv, "hf:F:T:pqsL",
long_options, NULL);
if (c == -1) {
break;
@@ -1186,6 +1197,9 @@ static int img_compare(int argc, char **argv)
case 's':
strict = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
@@ -1223,7 +1237,7 @@ static int img_compare(int argc, char **argv)
/* Initialize before goto out */
qemu_progress_init(progress, 2.0);
- flags = 0;
+ flags = nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid source cache option: %s", cache);
@@ -1774,6 +1788,7 @@ static int img_convert(int argc, char **argv)
QemuOpts *sn_opts = NULL;
ImgConvertState state;
bool image_opts = false;
+ bool nolock = false;
fmt = NULL;
out_fmt = "raw";
@@ -1789,7 +1804,7 @@ static int img_convert(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn",
+ c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qnL",
long_options, NULL);
if (c == -1) {
break;
@@ -1878,6 +1893,9 @@ static int img_convert(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case 'n':
skip_create = 1;
break;
@@ -1926,7 +1944,7 @@ static int img_convert(int argc, char **argv)
goto out;
}
- src_flags = 0;
+ src_flags = nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough);
if (ret < 0) {
error_report("Invalid source cache option: %s", src_cache);
@@ -2076,6 +2094,7 @@ static int img_convert(int argc, char **argv)
}
flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR;
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid cache option: %s", cache);
@@ -2256,12 +2275,14 @@ static gboolean str_equal_func(gconstpointer a,
gconstpointer b)
static ImageInfoList *collect_image_info_list(bool image_opts,
const char *filename,
const char *fmt,
- bool chain)
+ bool chain,
+ bool nolock)
{
ImageInfoList *head = NULL;
ImageInfoList **last = &head;
GHashTable *filenames;
Error *err = NULL;
+ int flags;
filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL);
@@ -2278,8 +2299,9 @@ static ImageInfoList *collect_image_info_list(bool
image_opts,
}
g_hash_table_insert(filenames, (gpointer)filename, NULL);
- blk = img_open(image_opts, filename, fmt,
- BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false);
+ flags = BDRV_O_NO_BACKING | BDRV_O_NO_IO;
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
+ blk = img_open(image_opts, filename, fmt, flags, false, false);
if (!blk) {
goto err;
}
@@ -2331,6 +2353,7 @@ static int img_info(int argc, char **argv)
const char *filename, *fmt, *output;
ImageInfoList *list;
bool image_opts = false;
+ bool nolock = false;
fmt = NULL;
output = NULL;
@@ -2345,7 +2368,7 @@ static int img_info(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "f:h",
+ c = getopt_long(argc, argv, "f:hL",
long_options, &option_index);
if (c == -1) {
break;
@@ -2358,6 +2381,9 @@ static int img_info(int argc, char **argv)
case 'f':
fmt = optarg;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OUTPUT:
output = optarg;
break;
@@ -2397,7 +2423,7 @@ static int img_info(int argc, char **argv)
return 1;
}
- list = collect_image_info_list(image_opts, filename, fmt, chain);
+ list = collect_image_info_list(image_opts, filename, fmt, chain, nolock);
if (!list) {
return 1;
}
@@ -2543,6 +2569,8 @@ static int img_map(int argc, char **argv)
MapEntry curr = { .length = 0 }, next;
int ret = 0;
bool image_opts = false;
+ bool nolock = false;
+ int flags;
fmt = NULL;
output = NULL;
@@ -2556,7 +2584,7 @@ static int img_map(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "f:h",
+ c = getopt_long(argc, argv, "f:hL",
long_options, &option_index);
if (c == -1) {
break;
@@ -2569,6 +2597,9 @@ static int img_map(int argc, char **argv)
case 'f':
fmt = optarg;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OUTPUT:
output = optarg;
break;
@@ -2605,7 +2636,8 @@ static int img_map(int argc, char **argv)
return 1;
}
- blk = img_open(image_opts, filename, fmt, 0, false, false);
+ flags = nolock ? BDRV_O_NO_LOCK : 0;
+ blk = img_open(image_opts, filename, fmt, flags, false, false);
if (!blk) {
return 1;
}
@@ -2668,6 +2700,7 @@ static int img_snapshot(int argc, char **argv)
bool quiet = false;
Error *err = NULL;
bool image_opts = false;
+ bool nolock = false;
bdrv_oflags = BDRV_O_RDWR;
/* Parse commandline parameters */
@@ -2678,7 +2711,7 @@ static int img_snapshot(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "la:c:d:hq",
+ c = getopt_long(argc, argv, "la:c:d:hqL",
long_options, NULL);
if (c == -1) {
break;
@@ -2723,6 +2756,9 @@ static int img_snapshot(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
@@ -2748,6 +2784,7 @@ static int img_snapshot(int argc, char **argv)
return 1;
}
+ bdrv_oflags |= nolock ? BDRV_O_NO_LOCK : 0;
/* Open the image */
blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet);
if (!blk) {
@@ -2817,6 +2854,7 @@ static int img_rebase(int argc, char **argv)
bool quiet = false;
Error *local_err = NULL;
bool image_opts = false;
+ bool nolock = false;
/* Parse commandline parameters */
fmt = NULL;
@@ -2831,7 +2869,7 @@ static int img_rebase(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "hf:F:b:upt:T:q",
+ c = getopt_long(argc, argv, "hf:F:b:upt:T:qL",
long_options, NULL);
if (c == -1) {
break;
@@ -2862,6 +2900,9 @@ static int img_rebase(int argc, char **argv)
case 'T':
src_cache = optarg;
break;
+ case 'L':
+ nolock = true;
+ break;
case 'q':
quiet = true;
break;
@@ -2901,6 +2942,7 @@ static int img_rebase(int argc, char **argv)
qemu_progress_print(0, 100);
flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0);
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid cache option: %s", cache);
@@ -3162,6 +3204,8 @@ static int img_resize(int argc, char **argv)
bool quiet = false;
BlockBackend *blk = NULL;
QemuOpts *param;
+ int flags;
+ bool nolock = false;
static QemuOptsList resize_options = {
.name = "resize_options",
@@ -3196,7 +3240,7 @@ static int img_resize(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "f:hq",
+ c = getopt_long(argc, argv, "f:hqL",
long_options, NULL);
if (c == -1) {
break;
@@ -3212,6 +3256,9 @@ static int img_resize(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
@@ -3263,8 +3310,9 @@ static int img_resize(int argc, char **argv)
n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0);
qemu_opts_del(param);
- blk = img_open(image_opts, filename, fmt,
- BDRV_O_RDWR, false, quiet);
+ flags = BDRV_O_RDWR;
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
+ blk = img_open(image_opts, filename, fmt, flags, false, quiet);
if (!blk) {
ret = -1;
goto out;
@@ -3325,6 +3373,7 @@ static int img_amend(int argc, char **argv)
BlockBackend *blk = NULL;
BlockDriverState *bs = NULL;
bool image_opts = false;
+ bool nolock = false;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
@@ -3334,7 +3383,7 @@ static int img_amend(int argc, char **argv)
{"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
- c = getopt_long(argc, argv, "ho:f:t:pq",
+ c = getopt_long(argc, argv, "ho:f:t:pqL",
long_options, NULL);
if (c == -1) {
break;
@@ -3371,6 +3420,9 @@ static int img_amend(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case 'L':
+ nolock = true;
+ break;
case OPTION_OBJECT:
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
@@ -3416,6 +3468,7 @@ static int img_amend(int argc, char **argv)
}
flags = BDRV_O_RDWR;
+ flags |= nolock ? BDRV_O_NO_LOCK : 0;
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid cache option: %s", cache);
--
2.7.4
- [Qemu-block] [PATCH v8 00/36] block: Image locking series, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 01/36] block: Add flag bits for image locking, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 02/36] qapi: Add ImageLockMode, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 03/36] block: Introduce image file locking, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 04/36] osdep: Add qemu_lock_fd and qemu_unlock_fd, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 05/36] raw-posix: Add image locking support, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 06/36] qemu-io: Add "-L" option for BDRV_O_NO_LOCK, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 07/36] qemu-img: Add "-L" option to sub commands,
Fam Zheng <=
- [Qemu-block] [PATCH v8 08/36] qemu-img: Update documentation of "-L" option, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 09/36] qemu-nbd: Add "--no-lock/-L" option, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 10/36] block: Don't lock drive-backup target image in none mode, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 11/36] block: Add blk_lock_image, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 12/36] virtio-blk: Apply lock-mode when realize, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 13/36] scsi-disk: Apply lock-mode when realize, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 14/36] scsi-generic: Apply lock-mode when realize, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 15/36] qdev: Add "lock-mode" to block device options, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 16/36] ide: Apply lock-mode when initialize, Fam Zheng, 2016/09/30
- [Qemu-block] [PATCH v8 17/36] nvme: Apply lock-mode when initialize, Fam Zheng, 2016/09/30