Gui Hecheng
2014-Jun-12 02:24 UTC
[PATCH 1/3] btrfs-progs: fix missing parity stripe for raid6 in chunk-recover
When deal with the p & q stripes for data profile raid6, chunk-recover
forgets to insert them into the chunk record. Just insert them back
freely.
Also wrap the inert procedure into a new function, fill_chunk_up.
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
---
chunk-recover.c | 30 ++++++++++++++++++++----------
1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/chunk-recover.c b/chunk-recover.c
index dfa7ff6..9b46b0b 100644
--- a/chunk-recover.c
+++ b/chunk-recover.c
@@ -1785,6 +1785,23 @@ static inline int count_devext_records(struct list_head
*record_list)
return num_of_records;
}
+static int fill_chunk_up(struct chunk_record *chunk, struct list_head *devexts,
+ struct recover_control *rc)
+{
+ int ret = 0;
+ int i;
+
+ for (i = 0; i < chunk->num_stripes; i++) {
+ if (!chunk->stripes[i].devid) {
+ ret = insert_stripe(devexts, rc, chunk, i);
+ if (ret)
+ break;
+ }
+ }
+
+ return ret;
+}
+
#define EQUAL_STRIPE (1 << 0)
static int rebuild_raid_data_chunk_stripes(struct recover_control *rc,
@@ -1919,9 +1936,9 @@ next_csum:
num_unordered = count_devext_records(&unordered);
if (chunk->type_flags & BTRFS_BLOCK_GROUP_RAID6
&& num_unordered == 2) {
- list_splice_init(&unordered, &chunk->dextents);
btrfs_release_path(&path);
- return 0;
+ ret = fill_chunk_up(chunk, &unordered, rc);
+ return ret;
}
goto next_stripe;
@@ -1966,14 +1983,7 @@ out:
& BTRFS_BLOCK_GROUP_RAID5)
|| (num_unordered == 3 && chunk->type_flags
& BTRFS_BLOCK_GROUP_RAID6)) {
- for (i = 0; i < chunk->num_stripes; i++) {
- if (!chunk->stripes[i].devid) {
- ret = insert_stripe(&unordered, rc,
- chunk, i);
- if (ret)
- break;
- }
- }
+ ret = fill_chunk_up(chunk, &unordered, rc);
}
}
fail_out:
--
1.8.1.4
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