[lvm-devel] master - segtype: add linear
Heinz Mauelshagen
heinzm at sourceware.org
Tue Jun 5 14:24:58 UTC 2018
Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=de66704253653305e4513637735a078af00912b7
Commit: de66704253653305e4513637735a078af00912b7
Parent: 2eda683a205d1ad2463cf60d783bc63d9833717e
Author: Heinz Mauelshagen <heinzm at redhat.com>
AuthorDate: Wed May 30 12:44:24 2018 +0200
Committer: Heinz Mauelshagen <heinzm at redhat.com>
CommitterDate: Tue Jun 5 16:23:18 2018 +0200
segtype: add linear
Add linear segtype addressing FIXME in preparation
for linear <-> striped convenience conversion support
---
lib/commands/toolcontext.c | 1 +
lib/metadata/segtype.c | 4 ----
lib/metadata/segtype.h | 4 +++-
lib/striped/striped.c | 19 ++++++++++++++-----
4 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
index 7d0640a..8eaece6 100644
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@@ -1462,6 +1462,7 @@ static int _init_segtypes(struct cmd_context *cmd)
struct segment_type *segtype;
struct segtype_library seglib = { .cmd = cmd, .lib = NULL };
struct segment_type *(*init_segtype_array[])(struct cmd_context *cmd) = {
+ init_linear_segtype,
init_striped_segtype,
init_zero_segtype,
init_error_segtype,
diff --git a/lib/metadata/segtype.c b/lib/metadata/segtype.c
index 2fdbaa3..a6f6203 100644
--- a/lib/metadata/segtype.c
+++ b/lib/metadata/segtype.c
@@ -22,10 +22,6 @@ struct segment_type *get_segtype_from_string(struct cmd_context *cmd,
{
struct segment_type *segtype;
- /* FIXME Register this properly within striped.c */
- if (!strcmp(str, SEG_TYPE_NAME_LINEAR))
- str = SEG_TYPE_NAME_STRIPED;
-
dm_list_iterate_items(segtype, &cmd->segtypes)
if (!strcmp(segtype->name, str))
return segtype;
diff --git a/lib/metadata/segtype.h b/lib/metadata/segtype.h
index fe19b34..5484c23 100644
--- a/lib/metadata/segtype.h
+++ b/lib/metadata/segtype.h
@@ -68,6 +68,7 @@ struct dev_manager;
#define SEG_RAID6 SEG_RAID6_ZR
#define SEG_STRIPED_TARGET (1ULL << 39)
+#define SEG_LINEAR_TARGET (1ULL << 40)
#define SEG_UNKNOWN (1ULL << 63)
@@ -105,7 +106,7 @@ struct dev_manager;
#define SEG_TYPE_NAME_RAID6_RS_6 "raid6_rs_6"
#define SEG_TYPE_NAME_RAID6_N_6 "raid6_n_6"
-#define segtype_is_linear(segtype) (!strcmp(segtype->name, SEG_TYPE_NAME_LINEAR))
+#define segtype_is_linear(segtype) (!strcmp((segtype)->name, SEG_TYPE_NAME_LINEAR))
#define segtype_is_striped_target(segtype) ((segtype)->flags & SEG_STRIPED_TARGET ? 1 : 0)
#define segtype_is_cache(segtype) ((segtype)->flags & SEG_CACHE ? 1 : 0)
#define segtype_is_cache_pool(segtype) ((segtype)->flags & SEG_CACHE_POOL ? 1 : 0)
@@ -274,6 +275,7 @@ struct segtype_library;
int lvm_register_segtype(struct segtype_library *seglib,
struct segment_type *segtype);
+struct segment_type *init_linear_segtype(struct cmd_context *cmd);
struct segment_type *init_striped_segtype(struct cmd_context *cmd);
struct segment_type *init_zero_segtype(struct cmd_context *cmd);
struct segment_type *init_error_segtype(struct cmd_context *cmd);
diff --git a/lib/striped/striped.c b/lib/striped/striped.c
index 9c8408c..a9854a2 100644
--- a/lib/striped/striped.c
+++ b/lib/striped/striped.c
@@ -230,7 +230,7 @@ static struct segtype_handler _striped_ops = {
.destroy = _striped_destroy,
};
-struct segment_type *init_striped_segtype(struct cmd_context *cmd)
+static struct segment_type *_init_segtype(struct cmd_context *cmd, const char *name, uint64_t target)
{
struct segment_type *segtype = dm_zalloc(sizeof(*segtype));
@@ -238,11 +238,20 @@ struct segment_type *init_striped_segtype(struct cmd_context *cmd)
return_NULL;
segtype->ops = &_striped_ops;
- segtype->name = SEG_TYPE_NAME_STRIPED;
- segtype->flags = SEG_STRIPED_TARGET |
- SEG_CAN_SPLIT | SEG_AREAS_STRIPED;
+ segtype->name = name;
+ segtype->flags = target | SEG_CAN_SPLIT | SEG_AREAS_STRIPED;
log_very_verbose("Initialised segtype: %s", segtype->name);
-
return segtype;
}
+
+struct segment_type *init_striped_segtype(struct cmd_context *cmd)
+{
+ return _init_segtype(cmd, SEG_TYPE_NAME_STRIPED, SEG_STRIPED_TARGET);
+}
+
+
+struct segment_type *init_linear_segtype(struct cmd_context *cmd)
+{
+ return _init_segtype(cmd, SEG_TYPE_NAME_LINEAR, SEG_LINEAR_TARGET);
+}
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