Inconsistent st_blocks and st_size values for inaccessible file

Asked May 03 '20 at 22:01

Active May 04 '20 at 06:58

Viewed 237 times

I have a small text file (some metadata redacted)

-rw-r--r--  1 ****  ****  17198 Sep 29  2019 230999.txt

But it can't be viewed

% cat 230999.txt
cat: 230999.txt: Attribute not found

I'm not sure what attribute is missing. It's a simple text file. cp and mv return the same error.

Stat shows st_blocks and st_size values that don't seem consistent:

% stat -f 'st_size=%z st_blocks=%b st_blksize=%k' 230999.txt
st_size=17198 st_blocks=0 st_blksize=4096

Everything I've read relates st_size and st_blocks usually using st_blksize. This tells me the file size but says there are no blocks allocated to it.

How do I access this file?

Update in response to comment:

I am unfamiliar with strace so I did the following:

sudo dtruss cat 230999.txt
...
open("230999.txt\0", 0x0, 0xFFFFFFFFE4CFABE5)        = -1 Err#2
write_nocancel(0x2, "cat: \004\b\0", 0x5)        = 5 0
write_nocancel(0x2, "230999.txt\b\0", 0xA)       = 10 0
write_nocancel(0x2, ": \b\0", 0x2)       = 2 0
write_nocancel(0x2, "No such file or directory\n\b\0", 0x1A)         = 26 0
close_nocancel(0x1)

(Left as an update since comments destroyed formatting)

edited May 04 '20 at 06:58

asked May 03 '20 at 22:01

John D.

1

Have you run fsck on that volume? If so, add the output of strace cat 230999.txt (only the last lines before the error) to your question. – Hauke Laging May 03 '20 at 22:05
On what type of filesystem is the file located? – Kusalananda May 03 '20 at 22:05
This is a Mac running the most recent version of 10.15. – John D. May 04 '20 at 06:50
sudo fsck_hfs -fl /dev/disk6s1 says the volume is okay. – John D. May 04 '20 at 06:52

Inconsistent st_blocks and st_size values for inaccessible file

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