Início / user-256137

again's questions

Martin Hope
again
Asked: 2018-03-09 03:33:56 +0800 CST
  • 1

Eu preciso saber o tempo de criação de um arquivo. Tentei executar o stat filenamecomando. Mas meu fs não armazena o tempo de criação do arquivo como metadados.

[root@s1 XYZ]# stat ./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp
  File: `./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp'
  Size: 16241           Blocks: 32         IO Block: 4096   regular file
Device: fd02h/64770d    Inode: 129108489   Links: 1
Access: (0644/-rw-r--r--)  Uid: (  509/ UNKNOWN)   Gid: (  509/ UNKNOWN)
Access: 2018-03-07 12:28:31.000000000 +0200
Modify: 2018-03-07 07:04:15.000000000 +0200
Change: 2018-03-07 12:28:31.468075157 +0200

No entanto, li este site e usei o comando debugfs. Ele mostra crtime (tempo de criação). Mas o tempo de criação mostrado é maior (mais recente) do que o tempo de modificação. O que está errado?

[root@s1 XYZ]# ls -i ./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp
129108489 ./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp
[root@s1 XYZ]# df -T ./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp
Filesystem                Type  1K-blocks       Used Available Use% Mounted on
/dev/mapper/datavg-datalv ext4 5986257120 5645927428  36483732 100% /data
[root@s1 fcs_backup]#  debugfs -R 'stat <129108489>' /dev/mapper/datavg-datalv
debugfs 1.41.12 (17-May-2010)
Inode: 129108489   Type: regular    Mode:  0644   Flags: 0x80000
Generation: 3953510053    Version: 0x00000000:00000001
User:   509   Group:   509   Size: 16241
File ACL: 0    Directory ACL: 0
Links: 1   Blockcount: 32
Fragment:  Address: 0    Number: 0    Size: 0
 ctime: 0x5a9fbecf:6f990a54 -- Wed Mar  7 12:28:31 2018
 atime: 0x5a9fbecf:00000000 -- Wed Mar  7 12:28:31 2018
 mtime: 0x5a9f72cf:00000000 -- Wed Mar  7 07:04:15 2018
crtime: 0x5a9fbecf:6f990a54 -- Wed Mar  7 12:28:31 2018
Size of extra inode fields: 28
EXTENTS:
(0-3): 516503300-516503303

O arquivo editado não é aberto. Eu corro pelo mesmo caminho.

[root@s1 XYZ]# stat ./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp
      File: `./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp'
      Size: 16241           Blocks: 32         IO Block: 4096   regular file
    Device: fd02h/64770d    Inode: 129108489   Links: 1
    Access: (0644/-rw-r--r--)  Uid: (  509/ UNKNOWN)   Gid: (  509/ UNKNOWN)
    Access: 2018-03-07 12:28:31.000000000 +0200
    Modify: 2018-03-07 07:04:15.000000000 +0200
    Change: 2018-03-07 12:28:31.468075157 +0200
    [root@s1 XYZ]#  debugfs -R 'stat <129108489>' /dev/mapper/datavg-datalv
    debugfs 1.41.12 (17-May-2010)
    Inode: 129108489   Type: regular    Mode:  0644   Flags: 0x80000
    Generation: 3953510053    Version: 0x00000000:00000001
    User:   509   Group:   509   Size: 16241
    File ACL: 0    Directory ACL: 0
    Links: 1   Blockcount: 32
    Fragment:  Address: 0    Number: 0    Size: 0
     ctime: 0x5a9fbecf:6f990a54 -- Wed Mar  7 12:28:31 2018
     atime: 0x5a9fbecf:00000000 -- Wed Mar  7 12:28:31 2018
     mtime: 0x5a9f72cf:00000000 -- Wed Mar  7 07:04:15 2018
    crtime: 0x5a9fbecf:6f990a54 -- Wed Mar  7 12:28:31 2018
    Size of extra inode fields: 28
    EXTENTS:
    (0-3): 516503300-516503303
    [root@s1 XYZ]# lsof ./px/cd/78/cd78eholuefekgpz6c0snn5oaayypnloqxgfivszd5d.mxp
    [root@s1 XYZ]#
linux stat
Martin Hope
again
Asked: 2017-12-08 01:16:17 +0800 CST
  • 0

Isto é estranho. Eu quero apenas grep linha contendo /run. Mas está retornando outras linhas também.

  [root@s5 ~]# df -h | grep -w "tm"
    [root@s5 ~]# df -h | grep -w "tmpfs"
    tmpfs                    489M     0  489M   0% /dev/shm
    tmpfs                    489M  6.8M  483M   2% /run
    tmpfs                    489M     0  489M   0% /sys/fs/cgroup
    tmpfs                     98M     0   98M   0% /run/user/1001
    tmpfs                     98M     0   98M   0% /run/user/0
    [root@s5 ~]# df -h | grep -w "tmpf"
    [root@s5 ~]# df -h | grep -w "/run"
    tmpfs                    489M  6.8M  483M   2% /run
    tmpfs                     98M     0   98M   0% /run/user/1001
    tmpfs                     98M     0   98M   0% /run/user/0
grep