The modification of .volWipe callback wipes ploop volume using one of given wiping algorithm: dod, nnsa, etc. However, in case of ploop volume we need to reinitialize root.hds and DiskDescriptor.xml. v2: - added check on ploop tools presens - virCommandAddArgFormat changed to virCommandAddArg Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com> --- src/storage/storage_backend.c | 68 +++++++++++++++++++++++++++++++++++++++---- 1 file changed, 62 insertions(+), 6 deletions(-) diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c index 5adf1fd..14b3a64 100644 --- a/src/storage/storage_backend.c +++ b/src/storage/storage_backend.c @@ -2195,6 +2195,55 @@ virStorageBackendWipeLocal(virStorageVolDefPtr vol, return ret; } +static int +virStorageBackendVolWipePloop(virStorageVolDefPtr vol) +{ + virCommandPtr cmd = NULL; + char *target_path = NULL; + char *disk_desc = NULL; + char *create_tool = NULL; + + int ret = -1; + + create_tool = virFindFileInPath("ploop"); + if (!create_tool) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("unable to find ploop tools, please install them")); + return -1; + } + + if (virAsprintf(&target_path, "%s/root.hds", vol->target.path) < 0) + goto cleanup; + + if (virAsprintf(&disk_desc, "%s/DiskDescriptor.xml", vol->target.path) < 0) + goto cleanup; + + if (virFileRemove(disk_desc, 0, 0) < 0) { + virReportError(errno, _("Failed to delete DiskDescriptor.xml of volume '%s'"), + vol->target.path); + goto cleanup; + } + if (virFileRemove(target_path, 0, 0) < 0) { + virReportError(errno, _("failed to delete root.hds of volume '%s'"), + vol->target.path); + goto cleanup; + } + + cmd = virCommandNewArgList(create_tool, "init", "-s", NULL); + + virCommandAddArgFormat(cmd, "%lluM", VIR_DIV_UP(vol->target.capacity, + (1024 * 1024))); + virCommandAddArgList(cmd, "-t", "ext4", NULL); + virCommandAddArg(cmd, target_path); + ret = virCommandRun(cmd, NULL); + + cleanup: + VIR_FREE(disk_desc); + VIR_FREE(target_path); + VIR_FREE(create_tool); + virCommandFree(cmd); + return ret; +} int virStorageBackendVolWipeLocal(virConnectPtr conn ATTRIBUTE_UNUSED, @@ -2207,6 +2256,8 @@ virStorageBackendVolWipeLocal(virConnectPtr conn ATTRIBUTE_UNUSED, const char *alg_char = NULL; struct stat st; virCommandPtr cmd = NULL; + char *path = NULL; + char *target_path = vol->target.path; virCheckFlags(0, -1); @@ -2214,12 +2265,12 @@ virStorageBackendVolWipeLocal(virConnectPtr conn ATTRIBUTE_UNUSED, vol->target.path, algorithm); if (vol->target.format == VIR_STORAGE_FILE_PLOOP) { - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("wiping for ploop volumes is not supported")); - goto cleanup; + if (virAsprintf(&path, "%s/root.hds", vol->target.path) < 0) + goto cleanup; + target_path = path; } - fd = open(vol->target.path, O_RDWR); + fd = open(target_path, O_RDWR); if (fd == -1) { virReportSystemError(errno, _("Failed to open storage volume with path '%s'"), @@ -2276,13 +2327,12 @@ virStorageBackendVolWipeLocal(virConnectPtr conn ATTRIBUTE_UNUSED, if (algorithm != VIR_STORAGE_VOL_WIPE_ALG_ZERO) { cmd = virCommandNew(SCRUB); virCommandAddArgList(cmd, "-f", "-p", alg_char, - vol->target.path, NULL); + target_path, NULL); if (virCommandRun(cmd, NULL) < 0) goto cleanup; ret = 0; - goto cleanup; } else { if (S_ISREG(st.st_mode) && st.st_blocks < (st.st_size / DEV_BSIZE)) { ret = virStorageBackendVolZeroSparseFileLocal(vol, st.st_size, fd); @@ -2292,10 +2342,16 @@ virStorageBackendVolWipeLocal(virConnectPtr conn ATTRIBUTE_UNUSED, vol->target.allocation, st.st_blksize); } + if (ret < 0) + goto cleanup; } + if (vol->target.format == VIR_STORAGE_FILE_PLOOP) + ret = virStorageBackendVolWipePloop(vol); + cleanup: virCommandFree(cmd); + VIR_FREE(path); VIR_FORCE_CLOSE(fd); return ret; } -- 1.8.3.1