Commit 615f2867 (Btrfs-progs: cleanup similar code in open_ctree_*
and close_ctree) introduced a regression in btrfs-convert.
open_ctree takes a sb_bytenr argument to specify where to find the
superblock. Under normal conditions, this will be at BTRFS_SUPER_INFO_OFFSET,
and that commit assumed as much under all conditions.
make_btrfs allows the caller to specify which blocks to use for
certain blocks (including the superblock) and this is used by btrfs-convert
to avoid overwriting the source file system's superblock until the
conversion is complete.
When btrfs-convert goes to open the newly initialized file system, it
fails with: "No valid btrfs found" since its superblock wasn't written
to the normal location.
This patch restores the passing down of super_bytesnr to
btrfs_scan_one_device.
Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>
---
btrfs-find-root.c | 2 +-
cmds-chunk.c | 2 +-
disk-io.c | 10 +++++++---
disk-io.h | 3 ++-
4 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/btrfs-find-root.c b/btrfs-find-root.c
index 9b3d7df..374cf81 100644
--- a/btrfs-find-root.c
+++ b/btrfs-find-root.c
@@ -82,7 +82,7 @@ static struct btrfs_root *open_ctree_broken(int fd, const char *device)
return NULL;
}
- ret = btrfs_scan_fs_devices(fd, device, &fs_devices);
+ ret = btrfs_scan_fs_devices(fd, device, &fs_devices, 0);
if (ret)
goto out;
diff --git a/cmds-chunk.c b/cmds-chunk.c
index 03314de..6ada328 100644
--- a/cmds-chunk.c
+++ b/cmds-chunk.c
@@ -1291,7 +1291,7 @@ static int recover_prepare(struct recover_control *rc, char *path)
goto fail_free_sb;
}
- ret = btrfs_scan_fs_devices(fd, path, &fs_devices);
+ ret = btrfs_scan_fs_devices(fd, path, &fs_devices, 0);
if (ret)
goto fail_free_sb;
diff --git a/disk-io.c b/disk-io.c
index 13dbe27..1b91de6 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -909,13 +909,17 @@ void btrfs_cleanup_all_caches(struct btrfs_fs_info *fs_info)
}
int btrfs_scan_fs_devices(int fd, const char *path,
- struct btrfs_fs_devices **fs_devices)
+ struct btrfs_fs_devices **fs_devices,
+ u64 super_bytenr)
{
u64 total_devs;
int ret;
+ if (super_bytenr == 0)
+ super_bytenr = BTRFS_SUPER_INFO_OFFSET;
+
ret = btrfs_scan_one_device(fd, path, fs_devices,
- &total_devs, BTRFS_SUPER_INFO_OFFSET);
+ &total_devs, super_bytenr);
if (ret) {
fprintf(stderr, "No valid Btrfs found on %s\n", path);
return ret;
@@ -1001,7 +1005,7 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp, const char *path,
if (restore)
fs_info->on_restoring = 1;
- ret = btrfs_scan_fs_devices(fp, path, &fs_devices);
+ ret = btrfs_scan_fs_devices(fp, path, &fs_devices, sb_bytenr);
if (ret)
goto out;
diff --git a/disk-io.h b/disk-io.h
index effaa9f..d7792e0 100644
--- a/disk-io.h
+++ b/disk-io.h
@@ -59,7 +59,8 @@ int btrfs_setup_all_roots(struct btrfs_fs_info *fs_info,
void btrfs_release_all_roots(struct btrfs_fs_info *fs_info);
void btrfs_cleanup_all_caches(struct btrfs_fs_info *fs_info);
int btrfs_scan_fs_devices(int fd, const char *path,
- struct btrfs_fs_devices **fs_devices);
+ struct btrfs_fs_devices **fs_devices,
+ u64 super_bytenr);
int btrfs_setup_chunk_tree_and_device_map(struct btrfs_fs_info *fs_info);
struct btrfs_root *open_ctree(const char *filename, u64 sb_bytenr, int writes);
--
1.8.1.4
--
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