Relocate chunks which have at least one stripe located on a device with
devid X.
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
---
fs/btrfs/volumes.c | 23 +++++++++++++++++++++++
fs/btrfs/volumes.h | 1 +
2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index b49ecfa..ce2a9e0 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2220,6 +2220,23 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset,
return ret;
}
+static int chunk_devid_filter(struct extent_buffer *leaf,
+ struct btrfs_chunk *chunk,
+ struct btrfs_restripe_args *rargs)
+{
+ struct btrfs_stripe *stripe;
+ int num_stripes = btrfs_chunk_num_stripes(leaf, chunk);
+ int i;
+
+ for (i = 0; i < num_stripes; i++) {
+ stripe = btrfs_stripe_nr(chunk, i);
+ if (btrfs_stripe_devid(leaf, stripe) == rargs->devid)
+ return 0;
+ }
+
+ return 1;
+}
+
static int chunk_soft_convert_filter(u64 chunk_profile,
struct btrfs_restripe_args *rargs)
{
@@ -2269,6 +2286,12 @@ static int should_restripe_chunk(struct btrfs_root *root,
return 0;
}
+ /* devid filter */
+ if ((rargs->flags & BTRFS_RESTRIPE_ARGS_DEVID) &&
+ chunk_devid_filter(leaf, chunk, rargs)) {
+ return 0;
+ }
+
/* soft profile changing mode */
if ((rargs->flags & BTRFS_RESTRIPE_ARGS_SOFT) &&
chunk_soft_convert_filter(chunk_type, rargs)) {
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index c6baf4b..1b8dc3e 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -187,6 +187,7 @@ struct map_lookup {
*/
#define BTRFS_RESTRIPE_ARGS_PROFILES (1ULL << 0)
#define BTRFS_RESTRIPE_ARGS_USAGE (1ULL << 1)
+#define BTRFS_RESTRIPE_ARGS_DEVID (1ULL << 2)
/*
* Profile changing flags. When SOFT is set we won't relocate chunk if
--
1.7.5.4
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