debian/patches/pve/0016-backup-vma-add-dir-format.patch

   1 From 99a526d92531d64ff0c31a83d0d55f38651a32a5 Mon Sep 17 00:00:00 2001
   2 From: Wolfgang Bumiller <w.bumiller@proxmox.com>
   3 Date: Wed, 9 Dec 2015 15:21:54 +0100
   4 Subject: [PATCH 16/48] backup: vma: add dir format
   5
   6 ---
   7  blockdev.c       | 137 ++++++++++++++++++++++++++++++++++++++++---------------
   8  hmp-commands.hx  |   8 ++--
   9  hmp.c            |   4 +-
  10  qapi-schema.json |   2 +-
  11  vma.c            |   2 +-
  12  5 files changed, 111 insertions(+), 42 deletions(-)
  13
  14 diff --git a/blockdev.c b/blockdev.c
  15 index 3e5c9ce..af1b9d4 100644
  16 --- a/blockdev.c
  17 +++ b/blockdev.c
  18 @@ -3007,6 +3007,8 @@ typedef struct PVEBackupDevInfo {
  19      uint8_t dev_id;
  20      //bool started;
  21      bool completed;
  22 +    char targetfile[PATH_MAX];
  23 +    BlockDriverState *target;
  24  } PVEBackupDevInfo;
  25
  26  static void pvebackup_run_next_job(void);
  27 @@ -3075,8 +3077,6 @@ static void pvebackup_complete_cb(void *opaque, int ret)
  28  {
  29      PVEBackupDevInfo *di = opaque;
  30
  31 -    assert(backup_state.vmaw);
  32 -
  33      di->completed = true;
  34
  35      if (ret < 0 && !backup_state.error) {
  36 @@ -3087,8 +3087,11 @@ static void pvebackup_complete_cb(void *opaque, int ret)
  37      BlockDriverState *bs = di->bs;
  38
  39      di->bs = NULL;
  40 +    di->target = NULL;
  41
  42 -    vma_writer_close_stream(backup_state.vmaw, di->dev_id);
  43 +    if (backup_state.vmaw) {
  44 +        vma_writer_close_stream(backup_state.vmaw, di->dev_id);
  45 +    }
  46
  47      block_job_cb(bs, ret);
  48
  49 @@ -3168,6 +3171,7 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
  50  {
  51      BlockBackend *blk;
  52      BlockDriverState *bs = NULL;
  53 +    const char *backup_dir = NULL;
  54      Error *local_err = NULL;
  55      uuid_t uuid;
  56      VmaWriter *vmaw = NULL;
  57 @@ -3175,6 +3179,7 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
  58      GList *di_list = NULL;
  59      GList *l;
  60      UuidInfo *uuid_info;
  61 +    BlockJob *job;
  62
  63      if (backup_state.di_list) {
  64          error_set(errp, ERROR_CLASS_GENERIC_ERROR,
  65 @@ -3185,11 +3190,6 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
  66      /* Todo: try to auto-detect format based on file name */
  67      format = has_format ? format : BACKUP_FORMAT_VMA;
  68
  69 -    if (format != BACKUP_FORMAT_VMA) {
  70 -        error_set(errp, ERROR_CLASS_GENERIC_ERROR, "unknown backup format");
  71 -        return NULL;
  72 -    }
  73 -
  74      if (has_devlist) {
  75          devs = g_strsplit_set(devlist, ",;:", -1);
  76
  77 @@ -3258,27 +3258,62 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
  78
  79      uuid_generate(uuid);
  80
  81 -    vmaw = vma_writer_create(backup_file, uuid, &local_err);
  82 -    if (!vmaw) {
  83 -        if (local_err) {
  84 -            error_propagate(errp, local_err);
  85 +    if (format == BACKUP_FORMAT_VMA) {
  86 +        vmaw = vma_writer_create(backup_file, uuid, &local_err);
  87 +        if (!vmaw) {
  88 +            if (local_err) {
  89 +                error_propagate(errp, local_err);
  90 +            }
  91 +            goto err;
  92          }
  93 -        goto err;
  94 -    }
  95
  96 -    /* register all devices for vma writer */
  97 -    l = di_list;
  98 -    while (l) {
  99 -        PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
 100 -        l = g_list_next(l);
 101 +        /* register all devices for vma writer */
 102 +        l = di_list;
 103 +        while (l) {
 104 +            PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
 105 +            l = g_list_next(l);
 106
 107 -        const char *devname = bdrv_get_device_name(di->bs);
 108 -        di->dev_id = vma_writer_register_stream(vmaw, devname, di->size);
 109 -        if (di->dev_id <= 0) {
 110 -            error_set(errp, ERROR_CLASS_GENERIC_ERROR,
 111 -                      "register_stream failed");
 112 +            const char *devname = bdrv_get_device_name(di->bs);
 113 +            di->dev_id = vma_writer_register_stream(vmaw, devname, di->size);
 114 +            if (di->dev_id <= 0) {
 115 +                error_set(errp, ERROR_CLASS_GENERIC_ERROR,
 116 +                          "register_stream failed");
 117 +                goto err;
 118 +            }
 119 +        }
 120 +    } else if (format == BACKUP_FORMAT_DIR) {
 121 +        if (mkdir(backup_file, 0640) != 0) {
 122 +            error_setg_errno(errp, errno, "can't create directory '%s'\n",
 123 +                             backup_file);
 124              goto err;
 125          }
 126 +        backup_dir = backup_file;
 127 +
 128 +        l = di_list;
 129 +        while (l) {
 130 +            PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
 131 +            l = g_list_next(l);
 132 +
 133 +            const char *devname = bdrv_get_device_name(di->bs);
 134 +            snprintf(di->targetfile, PATH_MAX, "%s/%s.raw", backup_dir, devname);
 135 +
 136 +            int flags = BDRV_O_RDWR;
 137 +            bdrv_img_create(di->targetfile, "raw", NULL, NULL, NULL,
 138 +                            di->size, flags, &local_err, false);
 139 +            if (local_err) {
 140 +                error_propagate(errp, local_err);
 141 +                goto err;
 142 +            }
 143 +
 144 +            di->target = bdrv_open(di->targetfile, NULL, NULL, flags, &local_err);
 145 +            if (!di->target) {
 146 +                error_propagate(errp, local_err);
 147 +                goto err;
 148 +            }
 149 +        }
 150 +    } else {
 151 +       error_set(errp, ERROR_CLASS_GENERIC_ERROR, "unknown backup format");
 152 +       goto err;
 153      }
 154
 155      /* add configuration file to archive */
 156 @@ -3291,12 +3326,27 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
 157              goto err;
 158          }
 159
 160 -        const char *basename = g_path_get_basename(config_file);
 161 -        if (vma_writer_add_config(vmaw, basename, cdata, clen) != 0) {
 162 -            error_setg(errp, "unable to add config data to vma archive");
 163 -            g_free(cdata);
 164 -            goto err;
 165 +        char *basename = g_path_get_basename(config_file);
 166 +
 167 +        if (format == BACKUP_FORMAT_VMA) {
 168 +            if (vma_writer_add_config(vmaw, basename, cdata, clen) != 0) {
 169 +                error_setg(errp, "unable to add config data to vma archive");
 170 +                g_free(cdata);
 171 +                g_free(basename);
 172 +                goto err;
 173 +            }
 174 +        } else if (format == BACKUP_FORMAT_DIR) {
 175 +            char config_path[PATH_MAX];
 176 +            snprintf(config_path, PATH_MAX, "%s/%s", backup_dir, basename);
 177 +            if (!g_file_set_contents(config_path, cdata, clen, &err)) {
 178 +                error_setg(errp, "unable to write config file '%s'", config_path);
 179 +                g_free(cdata);
 180 +                g_free(basename);
 181 +                goto err;
 182 +            }
 183          }
 184 +
 185 +        g_free(basename);
 186          g_free(cdata);
 187      }
 188
 189 @@ -3335,15 +3385,16 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
 190      while (l) {
 191          PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
 192          l = g_list_next(l);
 193 -
 194 -        backup_job_create(NULL, di->bs, NULL, speed, MIRROR_SYNC_MODE_FULL, NULL,
 195 -                          BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT,
 196 -                          pvebackup_dump_cb, pvebackup_complete_cb, di,
 197 -                          1, NULL, &local_err);
 198 -        if (local_err != NULL) {
 199 +        job = backup_job_create(NULL, di->bs, di->target, speed, MIRROR_SYNC_MODE_FULL, NULL,
 200 +                                false, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT,
 201 +                                BLOCK_JOB_DEFAULT,
 202 +                                pvebackup_dump_cb, pvebackup_complete_cb, di,
 203 +                                1, NULL, &local_err);
 204 +        if (!job || local_err != NULL) {
 205              error_setg(&backup_state.error, "backup_job_create failed");
 206              pvebackup_cancel(NULL);
 207          }
 208 +        block_job_start(job);
 209      }
 210
 211      if (!backup_state.error) {
 212 @@ -3352,14 +3403,24 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format,
 213
 214      uuid_info = g_malloc0(sizeof(*uuid_info));
 215      uuid_info->UUID = g_strdup(backup_state.uuid_str);
 216 +
 217      return uuid_info;
 218
 219  err:
 220
 221      l = di_list;
 222      while (l) {
 223 -        g_free(l->data);
 224 +        PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
 225          l = g_list_next(l);
 226 +
 227 +        if (di->target) {
 228 +            bdrv_unref(di->target);
 229 +        }
 230 +
 231 +        if (di->targetfile[0]) {
 232 +            unlink(di->targetfile);
 233 +        }
 234 +        g_free(di);
 235      }
 236      g_list_free(di_list);
 237
 238 @@ -3373,6 +3434,10 @@ err:
 239          unlink(backup_file);
 240      }
 241
 242 +    if (backup_dir) {
 243 +        rmdir(backup_dir);
 244 +    }
 245 +
 246      return NULL;
 247  }
 248
 249 diff --git a/hmp-commands.hx b/hmp-commands.hx
 250 index aea39d0..7288203 100644
 251 --- a/hmp-commands.hx
 252 +++ b/hmp-commands.hx
 253 @@ -89,9 +89,11 @@ ETEXI
 254
 255     {
 256          .name       = "backup",
 257 -        .args_type  = "backupfile:s,speed:o?,devlist:s?",
 258 -        .params     = "backupfile [speed [devlist]]",
 259 -        .help       = "create a VM Backup.",
 260 +        .args_type  = "directory:-d,backupfile:s,speed:o?,devlist:s?",
 261 +        .params     = "[-d] backupfile [speed [devlist]]",
 262 +        .help       = "create a VM Backup."
 263 +                   "\n\t\t\t Use -d to dump data into a directory instead"
 264 +                   "\n\t\t\t of using VMA format.",
 265          .cmd = hmp_backup,
 266      },
 267
 268 diff --git a/hmp.c b/hmp.c
 269 index c685ba5..465d7fa 100644
 270 --- a/hmp.c
 271 +++ b/hmp.c
 272 @@ -1664,11 +1664,13 @@ void hmp_backup(Monitor *mon, const QDict *qdict)
 273  {
 274      Error *error = NULL;
 275
 276 +    int dir = qdict_get_try_bool(qdict, "directory", 0);
 277      const char *backup_file = qdict_get_str(qdict, "backupfile");
 278      const char *devlist = qdict_get_try_str(qdict, "devlist");
 279      int64_t speed = qdict_get_try_int(qdict, "speed", 0);
 280
 281 -    qmp_backup(backup_file, true, BACKUP_FORMAT_VMA, false, NULL, !!devlist,
 282 +    qmp_backup(backup_file, true, dir ? BACKUP_FORMAT_DIR : BACKUP_FORMAT_VMA,
 283 +               false, NULL, !!devlist,
 284                 devlist, qdict_haskey(qdict, "speed"), speed, &error);
 285
 286      hmp_handle_error(mon, &error);
 287 diff --git a/qapi-schema.json b/qapi-schema.json
 288 index 059cbfc..1127f2c 100644
 289 --- a/qapi-schema.json
 290 +++ b/qapi-schema.json
 291 @@ -609,7 +609,7 @@
 292  # @vma: Proxmox vma backup format
 293  ##
 294  { 'enum': 'BackupFormat',
 295 -  'data': [ 'vma' ] }
 296 +  'data': [ 'vma', 'dir' ] }
 297
 298  ##
 299  # @backup:
 300 diff --git a/vma.c b/vma.c
 301 index 8925407..1ffaced 100644
 302 --- a/vma.c
 303 +++ b/vma.c
 304 @@ -264,7 +264,7 @@ static int extract_content(int argc, char **argv)
 305              g_free(statefn);
 306          } else if (di) {
 307              char *devfn = NULL;
 308 -            int flags = BDRV_O_RDWR|BDRV_O_CACHE_WB;
 309 +            int flags = BDRV_O_RDWR;
 310              bool write_zero = true;
 311
 312              if (readmap) {
 313 --
 314 2.1.4
 315