Project

General

Profile

Actions
Copy link

Bug #7424

closed

Cannot read from zero-length file

Added by Pavel Veretennikov about 10 years ago. Updated about 10 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Regression:
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

Ubuntu 12.04 LTS 3.8.0-35-generic x64
Ceph 0.72.2-1precise from http://ceph.com/debian-emperor/ 

cluster b841459d-255a-4a9a-992a-2b1778440820
     health HEALTH_OK
     monmap e2: 2 mons at {}, election epoch 4, quorum 0,1 storage
     mdsmap e4: 1/1/1 up {0=storage=up:active}
     osdmap e13: 2 osds: 2 up, 2 in
      pgmap v682: 320 pgs, 5 pools, 5120 MB data, 667 objects
            10315 MB used, 235 GB / 245 GB avail
                 320 active+clean

On a kernel mounted cephfs I cannot read from zero-length file, it gives me 25: Operation not permitted.

  1. touch test_file
  2. stat test_file
    File: `test_file'
    Size: 0 Blocks: 0 IO Block: 4194304 regular empty file
    Device: 0h/0d Inode: 1099511627801 Links: 1
    Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
    Access: 2014-02-14 11:14:12.499979076 +0100
    Modify: 2014-02-14 11:14:12.499979076 +0100
    Change: 2014-02-14 11:14:12.503081000 +0100
    Birth: -
  3. cat test_file
    cat: test_file: Operation not permitted
  4. echo 1 > test_file
  5. cat test_file
    1
Actions
Copy link

Also available in: Atom PDF