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| author | Wang Shilong <wangshilong1991@gmail.com> | 2016-07-07 18:43:38 +0900 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-07-13 18:44:52 +0200 |
| commit | 419334be8042717fead098453995f866a3530814 (patch) | |
| tree | 2c551019491a7545ffc987715c05b85386b46b63 /cmds-inspect.c | |
| parent | dabd2835836cd77c765e3f500c349ffe126f458c (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 <wangshilong1991@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'cmds-inspect.c')
| -rw-r--r-- | cmds-inspect.c | 2 |
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; } |