1
vote
1answer
41 views

Check the filesystem format with BusyBox (stat -f and df -T do not work)

I am using latest BusyBox v1.22.1 in my target. I want to check the filesystem type using stat -f or df -T but busybox doesn't support such commands. busybox help shows stat command as supported but ...
3
votes
1answer
50 views

Get device with major number 0 (btrfs subvolume)

When I stat a file on a btrfs subvolume I get a major device number of 0. Is there a reliable way to find the mount point of this device, without knowing in advance it is a btrfs subvolume? e.g. I'd ...
0
votes
1answer
78 views

How to increase the link count for a directory, link count went to 0?

I have made myself land in this situation, it is a chrooted workspace on my system where I virtualize the entire file system ( so its not actual /var/log ) Is there a way that I can either delete this ...
3
votes
2answers
173 views

Determining if a file system object is a procfs/sysfs/etc. “virtual file” which doesn't report its length correctly

Some kinds of pseudo-files, like many in the procfs and sysfs virtual file systems, have no file size (stat returns st_size == 0) and do not support SEEK_END in fseek. These file system objects, such ...
3
votes
2answers
399 views

Why do . and .. have a file size of 4 kB and 12 kB, respectively? [duplicate]

As displayed by ls -al, for example: drwxr-xr-x 9 jb jb 4.0K Mar 8 18:05 ./ drwx------ 49 jb jb 12K Mar 17 14:15 ../ I assume this is the minimum amount of space required to store the inode's ...
15
votes
2answers
5k views

Birth is empty on ext4

I was just reading up on the Birth section of stat and it appears ext4 should support it, but even a file I just created leaves it empty. ~ % touch test ...
3
votes
2answers
2k views

file block size - difference between stat and ls

I've noticed that when I do a: ls -ls file It provides block count, say 8 blocks. When I do: stat file I notice that the block count is 16, twice the number given by ls. The block size on my ...
7
votes
1answer
1k views

When was `relatime` made the default?

What is the first Linux kernel release to set relatime as the default mount option?
6
votes
2answers
788 views

Change file creation time on a FAT filesystem

I need a way to change the creation time of a file on a mounted FAT32 volume. I have to do that because my MP3 player will only read files sorted by this creation time. If I can find a way to set the ...