5:26 p.m.
From: Clementine Hayat <clem(a)lse.epita.fr>
Signed-off-by: Clementine Hayat <clem(a)lse.epita.fr>
---
src/storage/storage_backend_iscsi_direct.c | 121 ++++++++++++++++++++-
1 file changed, 120 insertions(+), 1 deletion(-)
diff --git a/src/storage/storage_backend_iscsi_direct.c
b/src/storage/storage_backend_iscsi_direct.c
index 7bdd39582b..5a7d70f24d 100644
--- a/src/storage/storage_backend_iscsi_direct.c
+++ b/src/storage/storage_backend_iscsi_direct.c
@@ -41,6 +41,8 @@
#define ISCSI_DEFAULT_TARGET_PORT 3260
#define VIR_ISCSI_TEST_UNIT_TIMEOUT 30 * 1000
+#define BLOCK_PER_PACKET 128
+#define VOL_NAME_PREFIX "unit:0:0:"
VIR_LOG_INIT("storage.storage_backend_iscsi_direct");
@@ -225,7 +227,7 @@ virISCSIDirectSetVolumeAttributes(virStoragePoolObjPtr pool,
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(pool);
- if (virAsprintf(&vol->name, "unit:0:0:%u", lun) < 0)
+ if (virAsprintf(&vol->name, "%s%u", VOL_NAME_PREFIX, lun) < 0)
return -1;
if (virAsprintf(&vol->key, "ip-%s-iscsi-%s-lun-%u", portal,
def->source.devices[0].path, lun) < 0)
@@ -601,12 +603,129 @@ virStorageBackendISCSIDirectRefreshPool(virStoragePoolObjPtr pool)
return ret;
}
+static int
+virStorageBackendISCSIDirectGetLun(virStorageVolDefPtr vol,
+ int *lun)
+{
+ const char *name = vol->name;
+ int ret = -1;
+
+ if (!STRPREFIX(name, VOL_NAME_PREFIX)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Invalid volume name %s"), name);
+ goto cleanup;
+ }
+
+ name += strlen(VOL_NAME_PREFIX);
+ if (virStrToLong_i(name, NULL, 10, lun) < 0)
+ goto cleanup;
+
+ ret = 0;
+ cleanup:
+ return ret;
+}
+
+static int
+virStorageBackendISCSIDirectVolWipeZero(virStorageVolDefPtr vol,
+ struct iscsi_context *iscsi)
+{
+ uint32_t lba = 0;
+ uint32_t block_size;
+ uint32_t nb_block;
+ struct scsi_task *task = NULL;
+ int lun = 0;
+ int ret = -1;
+ unsigned char *data;
+
+ if (virStorageBackendISCSIDirectGetLun(vol, &lun) < 0)
+ return ret;
+ if (virISCSIDirectTestUnitReady(iscsi, lun) < 0)
+ return ret;
+ if (virISCSIDirectGetVolumeCapacity(iscsi, lun, &block_size, &nb_block))
+ return ret;
+ if (VIR_ALLOC_N(data, block_size * BLOCK_PER_PACKET))
+ return ret;
+
+ while (lba < nb_block) {
+ if (nb_block - lba > block_size * BLOCK_PER_PACKET) {
+
+ if (!(task = iscsi_write10_sync(iscsi, lun, lba, data,
+ block_size * BLOCK_PER_PACKET,
+ block_size, 0, 0, 0, 0, 0)))
+ goto cleanup;
+ scsi_free_scsi_task(task);
+ lba += BLOCK_PER_PACKET;
+ } else {
+ if (!(task = iscsi_write10_sync(iscsi, lun, lba, data, block_size,
+ block_size, 0, 0, 0, 0, 0)))
+ goto cleanup;
+ scsi_free_scsi_task(task);
+ lba++;
+ }
+ }
+
+ ret = 0;
+ cleanup:
+ VIR_FREE(data);
+ return ret;
+}
+
+static int
+virStorageBackenISCSIDirectWipeVol(virStoragePoolObjPtr pool,
+ virStorageVolDefPtr vol,
+ unsigned int algorithm,
+ unsigned int flags)
+{
+ struct iscsi_context *iscsi = NULL;
+ char *portal = NULL;
+ int ret = -1;
+
+ virCheckFlags(0, -1);
+
+ if (!(iscsi = virStorageBackendISCSIDirectSetConnection(pool, &portal)))
+ goto cleanup;
+
+ switch ((virStorageVolWipeAlgorithm) algorithm) {
+ case VIR_STORAGE_VOL_WIPE_ALG_ZERO:
+ if (virStorageBackendISCSIDirectVolWipeZero(vol, iscsi) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("failed to wipe volume %s"),
+ vol->name);
+ goto disconnect;
+ }
+ break;
+ case VIR_STORAGE_VOL_WIPE_ALG_TRIM:
+ case VIR_STORAGE_VOL_WIPE_ALG_NNSA:
+ case VIR_STORAGE_VOL_WIPE_ALG_DOD:
+ case VIR_STORAGE_VOL_WIPE_ALG_BSI:
+ case VIR_STORAGE_VOL_WIPE_ALG_GUTMANN:
+ case VIR_STORAGE_VOL_WIPE_ALG_SCHNEIER:
+ case VIR_STORAGE_VOL_WIPE_ALG_PFITZNER7:
+ case VIR_STORAGE_VOL_WIPE_ALG_PFITZNER33:
+ case VIR_STORAGE_VOL_WIPE_ALG_RANDOM:
+ case VIR_STORAGE_VOL_WIPE_ALG_LAST:
+ virReportError(VIR_ERR_INVALID_ARG, _("unsupported algorithm %d"),
+ algorithm);
+ goto disconnect;
+ }
+
+ ret = 0;
+ disconnect:
+ virISCSIDirectDisconnect(iscsi);
+ iscsi_destroy_context(iscsi);
+ cleanup:
+ VIR_FREE(portal);
+ return ret;
+}
+
+
virStorageBackend virStorageBackendISCSIDirect = {
.type = VIR_STORAGE_POOL_ISCSI_DIRECT,
.checkPool = virStorageBackendISCSIDirectCheckPool,
.findPoolSources = virStorageBackendISCSIDirectFindPoolSources,
.refreshPool = virStorageBackendISCSIDirectRefreshPool,
+ .wipeVol = virStorageBackenISCSIDirectWipeVol,
};
int
--
2.18.0