We've record journal_tail of raid5/6 log in super_block so that recovery
of raid5/6 log can scan from this position.
This teaches inspect-dump-super to acknowledge %journal_tail.
Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
cmds-inspect-dump-super.c | 2 ++
ctree.h | 6 +++++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/cmds-inspect-dump-super.c b/cmds-inspect-dump-super.c
index 98e0270..baa4d1a 100644
--- a/cmds-inspect-dump-super.c
+++ b/cmds-inspect-dump-super.c
@@ -389,6 +389,8 @@ static void dump_superblock(struct btrfs_super_block *sb, int full)
(unsigned long long)btrfs_super_log_root_transid(sb));
printf("log_root_level\t\t%llu\n",
(unsigned long long)btrfs_super_log_root_level(sb));
+ printf("journal_tail\t\t%llu\n",
+ (unsigned long long)btrfs_super_journal_tail(sb));
printf("total_bytes\t\t%llu\n",
(unsigned long long)btrfs_super_total_bytes(sb));
printf("bytes_used\t\t%llu\n",
diff --git a/ctree.h b/ctree.h
index 48ae890..d28d6f7 100644
--- a/ctree.h
+++ b/ctree.h
@@ -458,8 +458,10 @@ struct btrfs_super_block {
__le64 cache_generation;
__le64 uuid_tree_generation;
+ __le64 journal_tail;
+
/* future expansion */
- __le64 reserved[30];
+ __le64 reserved[29];
u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS];
} __attribute__ ((__packed__));
@@ -2143,6 +2145,8 @@ BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block,
log_root_transid, 64);
BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
log_root_level, 8);
+BTRFS_SETGET_STACK_FUNCS(super_journal_tail, struct btrfs_super_block,
+ journal_tail, 64);
BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
total_bytes, 64);
BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
--
2.5.0
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