diff options
Diffstat (limited to 'debian/patches/debian/btrfs-warn-about-raid5-6-being-experimental-at-mount.patch')
| -rw-r--r-- | debian/patches/debian/btrfs-warn-about-raid5-6-being-experimental-at-mount.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/debian/patches/debian/btrfs-warn-about-raid5-6-being-experimental-at-mount.patch b/debian/patches/debian/btrfs-warn-about-raid5-6-being-experimental-at-mount.patch new file mode 100644 index 000000000..9f21e0705 --- /dev/null +++ b/debian/patches/debian/btrfs-warn-about-raid5-6-being-experimental-at-mount.patch @@ -0,0 +1,35 @@ +From: Adam Borowski <kilobyte@angband.pl> +Date: Tue, 28 Mar 2017 16:55:05 +0200 +Subject: btrfs: warn about RAID5/6 being experimental at mount time +Bug-Debian: https://bugs.debian.org/863290 +Origin: https://bugs.debian.org/863290#5 + +Too many people come complaining about losing their data -- and indeed, +there's no warning outside a wiki and the mailing list tribal knowledge. +Message severity chosen for consistency with XFS -- "alert" makes dmesg +produce nice red background which should get the point across. + +Signed-off-by: Adam Borowski <kilobyte@angband.pl> +[bwh: Also add_taint() so this is flagged in bug reports] +--- + fs/btrfs/disk-io.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +--- a/fs/btrfs/disk-io.c ++++ b/fs/btrfs/disk-io.c +@@ -3060,6 +3060,15 @@ retry_root_backup: + btrfs_set_and_info(fs_info, SSD, "enabling ssd optimizations"); + } + ++ if ((fs_info->avail_data_alloc_bits | ++ fs_info->avail_metadata_alloc_bits | ++ fs_info->avail_system_alloc_bits) & ++ BTRFS_BLOCK_GROUP_RAID56_MASK) { ++ btrfs_alert(fs_info, ++ "btrfs RAID5/6 is EXPERIMENTAL and has known data-loss bugs"); ++ add_taint(TAINT_AUX, LOCKDEP_STILL_OK); ++ } ++ + /* + * Mount does not set all options immediately, we can do it now and do + * not have to wait for transaction commit |