File lost in IHEP EOS


I find a file lost in IHEP EOS instance. I can see the file size through eos ls, but when reading the content, it shows the file is empty.

The eos fille info command shows the file has the size of 6464.

[root@eos01 ~]# eos file info fxid:0070a0f1 --fullpath
  File: '/eos/public/nano/data/PROG/amber12/AmberTools/test/pbsa_aug_c2/prmtop-inpcrd/Ca.prmtop'  Flags: 0644  Clock: 1b261a014
  Size: 6464
Modify: Thu Feb 23 11:16:17 2017 Timestamp: 1487819777.410343649
Change: Wed Dec 28 00:53:41 2016 Timestamp: 1482857621.0
  CUid: 10232 CGid: 1002  Fxid: 0070a0f1 Fid: 7381233    Pid: 312248   Pxid: 0004c3b8
XStype: adler    XS: c8 26 dc 35    ETAGs: "1981384646197248:c826dc35"
plain Stripes: 1 Blocksize: 4k LayoutId: 00100002
  #Rep: 1
│no.│ fs-id│                    host│      schedgroup│            path│      boot│  configstatus│ drainstatus│  active│                  geotag│           physical location│
 0        1          default       /data1/eos     booted             rw      nodrain   online              IHEP_LHAASO /data1/eos/000002e2/0070a0f1

However, when using stat command to check the real file on disk, it shows the file is empty.

[root@eos01 ~]# stat /data1/eos/000002e2/0070a0f1
  File: ‘/data1/eos/000002e2/0070a0f1’
  Size: 0               Blocks: 24         IO Block: 4096   regular empty file
Device: 811h/2065d      Inode: 42952271237  Links: 1
Access: (0640/-rw-r-----)  Uid: (    2/  daemon)   Gid: (    2/  daemon)
Access: 2019-12-30 23:26:40.886755198 +0800
Modify: 2019-10-16 11:03:24.797719588 +0800
Change: 2020-02-03 08:20:46.279983175 +0800
 Birth: -

The information in MGM and FST is inconsistent and the file lost in FST. We don’t know what happened in EOS MGM.

Has anyone encountered the same problem? How to solve it, we are worried that other files also have this problem.

EOS MGM and FST verison is 4.4.23