Add a function 'repair_inode_isize' to support inode isize repair.
Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com>
---
cmds-check.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/cmds-check.c b/cmds-check.c
index dad10cb..6947420 100644
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -2458,6 +2458,45 @@ out:
}
/*
+ * Set inode's isize to correct value in @info
+ *
+ * Returns <0 means on error
+ * Returns 0 means successful repair
+ */
+static int repair_inode_isize_lowmem(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct inode_item_fix_info *info)
+{
+ struct btrfs_inode_item *ei;
+ struct btrfs_key key;
+ struct btrfs_path path;
+ int ret;
+
+ ASSERT(info);
+ key.objectid = info->ino;
+ key.type = BTRFS_INODE_ITEM_KEY;
+ key.offset = 0;
+
+ ret = btrfs_search_slot(trans, root, &key, &path, 0, 1);
+ if (ret < 0)
+ goto out;
+ if (ret > 0) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ei = btrfs_item_ptr(path.nodes[0], path.slots[0],
+ struct btrfs_inode_item);
+ btrfs_set_inode_size(path.nodes[0], ei, info->isize);
+ btrfs_mark_buffer_dirty(path.nodes[0]);
+ printf("reset isize for inode %llu root %llu\n", info->ino,
+ root->root_key.objectid);
+out:
+ btrfs_release_path(&path);
+ return ret;
+}
+
+/*
* repair_inode_item - repair inode item errors
*
* Repair the inode item if error can be repaired. Any caller should compare
@@ -2485,7 +2524,7 @@ static int repair_inode_item(struct btrfs_root *root,
ret = 0;
goto out;
}
- if (!(err & NBYTES_ERROR)) {
+ if (!(err & NBYTES_ERROR) && !(err & ISIZE_ERROR)) {
warning("root %llu INODE[%llu] have error(s) can't repair,
error : %d",
root->objectid, info->ino, err);
/* can't fix any errors, ret should be positive */
@@ -2506,6 +2545,13 @@ static int repair_inode_item(struct btrfs_root *root,
else if (ret < 0)
goto out;
}
+ if (err & ISIZE_ERROR) {
+ ret = repair_inode_isize_lowmem(trans, root, info);
+ if (ret == 0)
+ err &= ~ISIZE_ERROR;
+ else if (ret < 0)
+ goto out;
+ }
if (err != info->err) {
info->err = err;
@@ -5040,6 +5086,7 @@ out:
if (isize != size) {
err |= ISIZE_ERROR;
+ info->isize = size;
error("root %llu DIR INODE [%llu] size(%llu) not equal
to %llu",
root->objectid, inode_id, isize, size);
}
--
2.11.0
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