Now qemu-img convert have similar options as qemu-nbd for internal
snapshot.
Signed-off-by: Wenchao Xia <xiaw...@linux.vnet.ibm.com>
---
qemu-img-cmds.hx | 2 +-
qemu-img.c | 44 +++++++++++++++++++++++++++++++++++---------
qemu-img.texi | 12 ++++++++----
3 files changed, 44 insertions(+), 14 deletions(-)
diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
index da1d965..9a8153b 100644
--- a/qemu-img-cmds.hx
+++ b/qemu-img-cmds.hx
@@ -34,7 +34,7 @@ STEXI
ETEXI
DEF("convert", img_convert,
- "convert [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-O output_fmt] [-o
options] [-s snapshot_name] [-S sparse_size] filename [filename2 [...]]
output_filename")
+ "convert [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-O output_fmt] [-o
options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename
[filename2 [...]] output_filename")
STEXI
@item convert [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-O
@var{output_fmt}] [-o @var{options}] [-s @var{snapshot_name}] [-S
@var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
ETEXI
diff --git a/qemu-img.c b/qemu-img.c
index a73beb5..ee940c2 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -93,6 +93,11 @@ static void help(void)
" 'options' is a comma separated list of format specific options
in a\n"
" name=value format. Use -o ? for an overview of the options
supported by the\n"
" used format\n"
+ " 'snapshot_param' is param used for internal snapshot, format\n"
+ " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n"
+ " '[ID_OR_NAME]'\n"
+ " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n"
+ " instead\n"
" '-c' indicates that target image must be compressed (qcow format
only)\n"
" '-u' enables unsafe rebasing. It is assumed that old and new
backing file\n"
" match exactly. The image doesn't need a working backing
file before\n"
@@ -1140,6 +1145,7 @@ static int img_convert(int argc, char **argv)
int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */
bool quiet = false;
Error *local_err = NULL;
+ QemuOpts *sn_opts = NULL;
fmt = NULL;
out_fmt = "raw";
@@ -1148,7 +1154,7 @@ static int img_convert(int argc, char **argv)
compress = 0;
skip_create = 0;
for(;;) {
- c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:qn");
+ c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:qnl:");
if (c == -1) {
break;
}
@@ -1183,6 +1189,18 @@ static int img_convert(int argc, char **argv)
case 's':
snapshot_name = optarg;
break;
+ case 'l':
+ if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) {
+ sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0);
+ if (!sn_opts) {
+ error_report("Failed in parsing snapshot param '%s'",
+ optarg);
+ return 1;
+ }
+ } else {
+ snapshot_name = optarg;
+ }
+ break;
case 'S':
{
int64_t sval;
@@ -1254,7 +1272,12 @@ static int img_convert(int argc, char **argv)
total_sectors += bs_sectors;
}
- if (snapshot_name != NULL) {
+ if (sn_opts) {
+ ret = bdrv_snapshot_load_tmp(bs[0],
+ qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID),
+ qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME),
+ &local_err);
+ } else if (snapshot_name != NULL) {
if (bs_n > 1) {
error_report("No support for concatenating multiple snapshot");
ret = -1;
@@ -1262,13 +1285,13 @@ static int img_convert(int argc, char **argv)
}
bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err);
- if (error_is_set(&local_err)) {
- error_report("Failed to load snapshot: %s",
- error_get_pretty(local_err));
- error_free(local_err);
- ret = -1;
- goto out;
- }
+ }
+ if (error_is_set(&local_err)) {
+ error_report("Failed to load snapshot: %s",
+ error_get_pretty(local_err));
+ error_free(local_err);
+ ret = -1;
+ goto out;
}
/* Find driver and parse its options */
@@ -1559,6 +1582,9 @@ out:
free_option_parameters(create_options);
free_option_parameters(param);
qemu_vfree(buf);
+ if (sn_opts) {
+ qemu_opts_del(sn_opts);
+ }
if (out_bs) {
bdrv_unref(out_bs);
}
diff --git a/qemu-img.texi b/qemu-img.texi
index 768054e..fbdbfa7 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -46,7 +46,11 @@ is the destination disk image filename
is a comma separated list of format specific options in a
name=value format. Use @code{-o ?} for an overview of the options supported
by the used format or see the format descriptions below for details.
-
+@item snapshot_param
+is param used for internal snapshot, format is
+'snapshot.id=[ID],snapshot.name=[NAME]' or '[ID_OR_NAME]'
+@item snapshot_id_or_name
+is deprecated, use snapshot_param instead
@item -c
indicates that target image must be compressed (qcow format only)
@@ -179,10 +183,10 @@ Error on reading data
@end table
-@item convert [-c] [-p] [-n] [-f @var{fmt}] [-t @var{cache}] [-O
@var{output_fmt}] [-o @var{options}] [-s @var{snapshot_name}] [-S
@var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
+@item convert [-c] [-p] [-n] [-f @var{fmt}] [-t @var{cache}] [-O
@var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l
@var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2}
[...]] @var{output_filename}
-Convert the disk image @var{filename} or a snapshot @var{snapshot_name} to
disk image @var{output_filename}
-using format @var{output_fmt}. It can be optionally compressed (@code{-c}
+Convert the disk image @var{filename} or a snapshot
@var{snapshot_param}(@var{snapshot_id_or_name} is deprecated)
+to disk image @var{output_filename} using format @var{output_fmt}. It can be
optionally compressed (@code{-c}
option) or use any format specific options like encryption (@code{-o} option).
Only the formats @code{qcow} and @code{qcow2} support compression. The
--
1.7.1
