path: root/cmds-inspect.c
diff options
authorWang Shilong <>2016-07-07 18:43:38 +0900
committerDavid Sterba <>2016-07-13 18:44:52 +0200
commit419334be8042717fead098453995f866a3530814 (patch)
tree2c551019491a7545ffc987715c05b85386b46b63 /cmds-inspect.c
parentdabd2835836cd77c765e3f500c349ffe126f458c (diff)
btrfs-progs: du: fix to skip not btrfs dir/file
'btrfs file du' is a very useful tool to watch my system file usage information with snapshot aware. when trying to run following commands: [root@localhost btrfs-progs]# btrfs file du / Total Exclusive Set shared Filename ERROR: Failed to lookup root id - Inappropriate ioctl for device ERROR: cannot check space of '/': Unknown error -1 and My Filesystem looks like this: [root@localhost btrfs-progs]# df -Th Filesystem Type Size Used Avail Use% Mounted on devtmpfs devtmpfs 16G 0 16G 0% /dev tmpfs tmpfs 16G 368K 16G 1% /dev/shm tmpfs tmpfs 16G 1.4M 16G 1% /run tmpfs tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda3 btrfs 60G 19G 40G 33% / tmpfs tmpfs 16G 332K 16G 1% /tmp /dev/sdc btrfs 2.8T 166G 1.7T 9% /data /dev/sda2 xfs 2.0G 452M 1.6G 23% /boot /dev/sda1 vfat 1.9G 11M 1.9G 1% /boot/efi tmpfs tmpfs 3.2G 24K 3.2G 1% /run/user/1000 So I installed Btrfs as my root partition, but boot partition can be other fs. We can Let btrfs tool aware of this is not a btrfs file or directory and skip those files, so that someone like me could just run 'btrfs file du /' to scan all btrfs filesystems. After patch, it will look like: Total Exclusive Set shared Filename 0.00B 0.00B - //root/.bash_logout 0.00B 0.00B - //root/.bash_profile 0.00B 0.00B - //root/.bashrc 0.00B 0.00B - //root/.cshrc 0.00B 0.00B - //root/.tcshrc This works for me to analysis system usage and analysis performaces. Signed-off-by: Wang Shilong <> Signed-off-by: David Sterba <>
Diffstat (limited to 'cmds-inspect.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/cmds-inspect.c b/cmds-inspect.c
index dd7b9dd2..2ae44be2 100644
--- a/cmds-inspect.c
+++ b/cmds-inspect.c
@@ -323,7 +323,7 @@ static int cmd_inspect_rootid(int argc, char **argv)
ret = lookup_ino_rootid(fd, &rootid);
if (ret) {
- error("rootid failed with ret=%d", ret);
+ error("failed to lookup root id: %s", strerror(-ret));
goto out;