[PATCH 03/14] Btrfs: raid56: detect raid56 log on mount
From: Liu Bo <hidden>
Date: 2017-08-01 17:15:54
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
We've put the flag BTRFS_DEV_RAID56_LOG in device->type, so we can recognize the journal device of raid56 while reading the chunk tree. Signed-off-by: Liu Bo <redacted> --- fs/btrfs/volumes.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 5c50df7..a17a488 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c@@ -6696,6 +6696,18 @@ static int read_one_dev(struct btrfs_fs_info *fs_info, } fill_device_from_item(leaf, dev_item, device); + + if (device->type & BTRFS_DEV_RAID56_LOG) { + ret = btrfs_set_r5log(fs_info, device); + if (ret) { + btrfs_err(fs_info, "error %d on loading r5log", ret); + return ret; + } + + btrfs_info(fs_info, "devid %llu uuid %pU is raid56 log", + device->devid, device->uuid); + } + device->in_fs_metadata = 1; if (device->writeable && !device->is_tgtdev_for_dev_replace) { device->fs_devices->total_rw_bytes += device->total_bytes;
--
2.9.4