multiple snapshot support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2086 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 36 insertions, 35 deletions

diff --git a/qemu-img.c b/qemu-img.c
index 8b2acad14e..06687bc1f3 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -159,36 +159,6 @@ void help(void)
     exit(1);
 }
 
-
-#define NB_SUFFIXES 4
-
-static void get_human_readable_size(char *buf, int buf_size, int64_t size)
-{
-    static const char suffixes[NB_SUFFIXES] = "KMGT";
-    int64_t base;
-    int i;
-
-    if (size <= 999) {
-        snprintf(buf, buf_size, "%" PRId64, size);
-    } else {
-        base = 1024;
-        for(i = 0; i < NB_SUFFIXES; i++) {
-            if (size < (10 * base)) {
-                snprintf(buf, buf_size, "%0.1f%c", 
-                         (double)size / base,
-                         suffixes[i]);
-                break;
-            } else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) {
-                snprintf(buf, buf_size, "%" PRId64 "%c", 
-                         ((size + (base >> 1)) / base),
-                         suffixes[i]);
-                break;
-            }
-            base = base * 1024;
-        }
-    }
-}
-
 #if defined(WIN32)
 /* XXX: put correct support for win32 */
 static int read_password(char *buf, int buf_size)
@@ -486,6 +456,7 @@ static int img_convert(int argc, char **argv)
     int64_t total_sectors, nb_sectors, sector_num;
     uint8_t buf[IO_BUF_SIZE];
     const uint8_t *buf1;
+    BlockDriverInfo bdi;
 
     fmt = NULL;
     out_fmt = "raw";
@@ -525,9 +496,9 @@ static int img_convert(int argc, char **argv)
     drv = bdrv_find_format(out_fmt);
     if (!drv)
         error("Unknown file format '%s'", fmt);
-    if (compress && drv != &bdrv_qcow)
+    if (compress && drv != &bdrv_qcow && drv != &bdrv_qcow2)
         error("Compression not supported for this file format");
-    if (encrypt && drv != &bdrv_qcow)
+    if (encrypt && drv != &bdrv_qcow && drv != &bdrv_qcow2)
         error("Encryption not supported for this file format");
     if (compress && encrypt)
         error("Compression and encryption not supported at the same time");
@@ -544,7 +515,9 @@ static int img_convert(int argc, char **argv)
     out_bs = bdrv_new_open(out_filename, out_fmt);
 
     if (compress) {
-        cluster_size = qcow_get_cluster_size(out_bs);
+        if (bdrv_get_info(out_bs, &bdi) < 0)
+            error("could not get block driver info");
+        cluster_size = bdi.cluster_size;
         if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE)
             error("invalid cluster size");
         cluster_sectors = cluster_size >> 9;
@@ -562,12 +535,15 @@ static int img_convert(int argc, char **argv)
             if (n < cluster_sectors)
                 memset(buf + n * 512, 0, cluster_size - n * 512);
             if (is_not_zero(buf, cluster_size)) {
-                if (qcow_compress_cluster(out_bs, sector_num, buf) != 0)
+                if (bdrv_write_compressed(out_bs, sector_num, buf, 
+                                          cluster_sectors) != 0)
                     error("error while compressing sector %" PRId64,
                           sector_num);
             }
             sector_num += n;
         }
+        /* signal EOF to align */
+        bdrv_write_compressed(out_bs, 0, NULL, 0);
     } else {
         sector_num = 0;
         for(;;) {
@@ -630,6 +606,24 @@ static int64_t get_allocated_file_size(const char *filename)
 }
 #endif
 
+static void dump_snapshots(BlockDriverState *bs)
+{
+    QEMUSnapshotInfo *sn_tab, *sn;
+    int nb_sns, i;
+    char buf[256];
+
+    nb_sns = bdrv_snapshot_list(bs, &sn_tab);
+    if (nb_sns <= 0)
+        return;
+    printf("Snapshot list:\n");
+    printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
+    for(i = 0; i < nb_sns; i++) {
+        sn = &sn_tab[i];
+        printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn));
+    }
+    qemu_free(sn_tab);
+}
+
 static int img_info(int argc, char **argv)
 {
     int c;
@@ -640,6 +634,7 @@ static int img_info(int argc, char **argv)
     int64_t total_sectors, allocated_size;
     char backing_filename[1024];
     char backing_filename2[1024];
+    BlockDriverInfo bdi;
 
     fmt = NULL;
     for(;;) {
@@ -690,13 +685,19 @@ static int img_info(int argc, char **argv)
            dsize_buf);
     if (bdrv_is_encrypted(bs))
         printf("encrypted: yes\n");
+    if (bdrv_get_info(bs, &bdi) >= 0) {
+        if (bdi.cluster_size != 0) 
+            printf("cluster_size: %d\n", bdi.cluster_size);
+    }
     bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
-    if (backing_filename[0] != '\0')
+    if (backing_filename[0] != '\0') {
         path_combine(backing_filename2, sizeof(backing_filename2),
                      filename, backing_filename);
         printf("backing file: %s (actual path: %s)\n", 
                backing_filename,
                backing_filename2);
+    }
+    dump_snapshots(bs);
     bdrv_delete(bs);
     return 0;
 }