[sheepdog] [PATCH v3 02/10] collie: add -c for 'collie vdi create' to specify redundancy level for per-vdi

[levin li]

From: levin li <xingke.lwp at taobao.com>


Signed-off-by: levin li <xingke.lwp at taobao.com>
---
 collie/vdi.c |   27 ++++++++++++++++++++-------
 sheep/ops.c  |    9 ++++++---
 2 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/collie/vdi.c b/collie/vdi.c
index e4f4f65..4c793c9 100644
--- a/collie/vdi.c
+++ b/collie/vdi.c
@@ -23,6 +23,7 @@ struct vdi_cmd_data {
 	int exclusive;
 	int delete;
 	int prealloc;
+	int nr_copies;
 } vdi_cmd_data = { ~0, };
 
 struct get_vdi_info {
@@ -399,7 +400,7 @@ out:
 }
 
 static int do_vdi_create(char *vdiname, int64_t vdi_size, uint32_t base_vid,
-			 uint32_t *vdi_id, int snapshot)
+			 uint32_t *vdi_id, int snapshot, int nr_copies)
 {
 	struct sd_req hdr;
 	struct sd_rsp *rsp = (struct sd_rsp *)&hdr;
@@ -425,6 +426,7 @@ static int do_vdi_create(char *vdiname, int64_t vdi_size, uint32_t base_vid,
 	hdr.vdi.base_vdi_id = base_vid;
 	hdr.vdi.snapid = snapshot;
 	hdr.vdi.vdi_size = roundup(vdi_size, 512);
+	hdr.vdi.copies = nr_copies;
 
 	ret = exec_req(fd, &hdr, buf, &wlen, &rlen);
 
@@ -469,7 +471,7 @@ static int vdi_create(int argc, char **argv)
 		return EXIT_USAGE;
 	}
 
-	ret = do_vdi_create(vdiname, size, 0, &vid, 0);
+	ret = do_vdi_create(vdiname, size, 0, &vid, 0, vdi_cmd_data.nr_copies);
 	if (ret != EXIT_SUCCESS || !vdi_cmd_data.prealloc)
 		goto out;
 
@@ -548,7 +550,8 @@ static int vdi_snapshot(int argc, char **argv)
 				      0, inode->nr_copies, 0);
 	}
 
-	return do_vdi_create(vdiname, inode->vdi_size, vid, NULL, 1);
+	return do_vdi_create(vdiname, inode->vdi_size, vid, NULL, 1,
+			     vdi_cmd_data.nr_copies);
 }
 
 static int vdi_clone(int argc, char **argv)
@@ -595,7 +598,8 @@ static int vdi_clone(int argc, char **argv)
 		goto out;
 	}
 
-	ret = do_vdi_create(dst_vdi, inode->vdi_size, base_vid, &new_vid, 0);
+	ret = do_vdi_create(dst_vdi, inode->vdi_size, base_vid, &new_vid, 0,
+			    vdi_cmd_data.nr_copies);
 	if (ret != EXIT_SUCCESS || !vdi_cmd_data.prealloc)
 		goto out;
 
@@ -1479,11 +1483,11 @@ out:
 static struct subcommand vdi_cmd[] = {
 	{"check", "<vdiname>", "saph", "check and repair image's consistency",
 	 NULL, SUBCMD_FLAG_NEED_NODELIST|SUBCMD_FLAG_NEED_THIRD_ARG, vdi_check},
-	{"create", "<vdiname> <size>", "Paph", "create an image",
+	{"create", "<vdiname> <size>", "Pcaph", "create an image",
 	 NULL, SUBCMD_FLAG_NEED_NODELIST|SUBCMD_FLAG_NEED_THIRD_ARG, vdi_create},
-	{"snapshot", "<vdiname>", "saph", "create a snapshot",
+	{"snapshot", "<vdiname>", "scaph", "create a snapshot",
 	 NULL, SUBCMD_FLAG_NEED_NODELIST|SUBCMD_FLAG_NEED_THIRD_ARG, vdi_snapshot},
-	{"clone", "<src vdi> <dst vdi>", "sPaph", "clone an image",
+	{"clone", "<src vdi> <dst vdi>", "sPcaph", "clone an image",
 	 NULL, SUBCMD_FLAG_NEED_NODELIST|SUBCMD_FLAG_NEED_THIRD_ARG, vdi_clone},
 	{"delete", "<vdiname>", "saph", "delete an image",
 	 NULL, SUBCMD_FLAG_NEED_NODELIST|SUBCMD_FLAG_NEED_THIRD_ARG, vdi_delete},
@@ -1513,6 +1517,7 @@ static struct subcommand vdi_cmd[] = {
 static int vdi_parser(int ch, char *opt)
 {
 	char *p;
+	int nr_copies;
 
 	switch (ch) {
 	case 'P':
@@ -1539,6 +1544,14 @@ static int vdi_parser(int ch, char *opt)
 	case 'd':
 		vdi_cmd_data.delete = 1;
 		break;
+	case 'c':
+		nr_copies = strtol(opt, &p, 10);
+		if (opt == p || nr_copies < 0 || nr_copies > SD_MAX_COPIES) {
+			fprintf(stderr, "Invalid copies number, must be "
+				"an integer between 0 and %d\n", SD_MAX_COPIES);
+			exit(EXIT_FAILURE);
+		}
+		vdi_cmd_data.nr_copies = nr_copies;
 	}
 
 	return 0;
diff --git a/sheep/ops.c b/sheep/ops.c
index 8793c8d..062a7b4 100644
--- a/sheep/ops.c
+++ b/sheep/ops.c
@@ -112,7 +112,7 @@ static int cluster_new_vdi(struct request *req)
 {
 	const struct sd_req *hdr = &req->rq;
 	struct sd_rsp *rsp = &req->rp;
-	uint32_t vid = 0, nr_copies = sys->nr_copies;
+	uint32_t vid = 0;
 	struct vdi_iocb iocb;
 	int ret;
 
@@ -121,12 +121,15 @@ static int cluster_new_vdi(struct request *req)
 	iocb.size = hdr->vdi.vdi_size;
 	iocb.base_vid = hdr->vdi.base_vdi_id;
 	iocb.is_snapshot = hdr->vdi.snapid;
-	iocb.nr_copies = sys->nr_copies;
+	iocb.nr_copies = hdr->vdi.copies;
+
+	if (!iocb.nr_copies)
+		iocb.nr_copies = SD_DEFAULT_COPIES;
 
 	ret = add_vdi(&iocb, &vid);
 
 	rsp->vdi.vdi_id = vid;
-	rsp->vdi.copies = nr_copies;
+	rsp->vdi.copies = iocb.nr_copies;
 
 	return ret;
 }
-- 
1.7.1