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[Bug-tar] tar doesn't extract original date & timestamps on cifs mounts

From: F.Hofmann
Subject: [Bug-tar] tar doesn't extract original date & timestamps on cifs mounts ??
Date: Mon, 6 Aug 2018 10:58:45 +0200
Hi,
 
i believe that tar (GNU tar) 1.27.1 in  Debian GNU/Linux 8 \n \l has a bug when you extract tar archives on a cifs mounted directory. let me explain what I mean.
 
mounted a windows cifs share to /media/deepspace directory. there are a couple of older tar.gz archives inside.
 
 
/etc/fstab:
 
//deepspace/EDIStorage          /media/deepspace cifs file_mode=0775,iocharset=utf8,noperm,dir_mode=0775,sec=ntlm,vers=2.1,credentials=/root/.biscredentials       0       0
 
 
Dateisystem            1K-Blöcke   Benutzt Verfügbar Verw% Eingehängt auf
/dev/sda1               29526092   2947996  25055204   11% /
udev                       10240         0     10240    0% /dev
tmpfs                     812152      9044    803108    2% /run
tmpfs                    2030380         0   2030380    0% /dev/shm
tmpfs                       5120         0      5120    0% /run/lock
tmpfs                    2030380         0   2030380    0% /sys/fs/cgroup
tmpfs                     406076         0    406076    0% /run/user/1000
//deepspace/EDIStorage 335396860 111916744 223480116   34% /media/deepspace
 
address@hidden:~# ls -als  /media/deepspace/Temp/KSZ_DC_060879_20170222965.tar.gz

92 -rwxrwxr-x 1 root root 92731 Feb 22  2017 /media/deepspace/Temp/KSZ_DC_060879_20170222965.tar.gz
 
tried to extract the KSZ_DC_060879_20170222965.tar.gz file from 22.02.2017 with files inside from 22.12.2016
 
address@hidden:/media/deepspace/Temp/test# tar tvfz ../KSZ_DC_060879_20170222965.tar.gz
-rwxr-xr-x root/root    119542 2016-12-22 20:08 000000017795
-rwxr-xr-x root/root     59264 2016-12-22 20:08 000000017796
-rwxr-xr-x root/root    568240 2016-12-22 20:09 000000017797
-rwxr-xr-x root/root    640734 2016-12-22 20:09 000000017798
-rwxr-xr-x root/root     93144 2016-12-22 20:09 000000017799
-rwxr-xr-x root/root    347313 2016-12-22 20:09 000000017800
-rwxr-xr-x root/root    189032 2016-12-22 20:09 000000017801
-rwxr-xr-x root/root      7243 2016-12-22 20:09 000000017802
-rwxr-xr-x root/root     39876 2016-12-22 20:09 000000017803
-rwxr-xr-x root/root     68277 2016-12-22 20:09 000000017804
-rwxr-xr-x root/root    321799 2016-12-22 20:11 000000017805
-rwxr-xr-x root/root     57720 2016-12-22 20:13 000000017806
-rwxr-xr-x root/root     30014 2016-12-22 20:11 000000017807
-rwxr-xr-x root/root    161049 2016-12-22 20:12 000000017808
-rwxr-xr-x root/root     34090 2016-12-22 20:12 000000017809
-rwxr-xr-x root/root      6662 2016-12-22 20:10 000000017810
-rwxr-xr-x root/root    182991 2016-12-22 20:11 000000017811
-rwxr-xr-x root/root      7005 2016-12-22 20:11 000000017812
-rwxr-xr-x root/root     21500 2016-12-22 20:10 000000017813
-rwxr-xr-x root/root    131538 2016-12-22 20:11 000000017814
 
address@hidden:/media/deepspace/Temp/test# tar xvfz ../KSZ_DC_060879_20170222965.tar.gz
000000017795
000000017796
000000017797
000000017798
000000017799
000000017800
000000017801
000000017802
000000017803
000000017804
000000017805
000000017806
000000017807
000000017808
000000017809
000000017810
000000017811
000000017812
000000017813
000000017814
 
If I extraxt this file to a test folder and do a ls -als, the extracted files all have the actual date and timestamp.
 
 
address@hidden:/media/deepspace/Temp/test# ls -als
insgesamt 3056
-rwxrwxr-x 1 root root 119542 Aug  6 10:40 000000017795
-rwxrwxr-x 1 root root  59264 Aug  6 10:40 000000017796
-rwxrwxr-x 1 root root 568240 Aug  6 10:40 000000017797
-rwxrwxr-x 1 root root 640734 Aug  6 10:40 000000017798
-rwxrwxr-x 1 root root  93144 Aug  6 10:40 000000017799
-rwxrwxr-x 1 root root 347313 Aug  6 10:40 000000017800
-rwxrwxr-x 1 root root 189032 Aug  6 10:40 000000017801
-rwxrwxr-x 1 root root   7243 Aug  6 10:40 000000017802
-rwxrwxr-x 1 root root  39876 Aug  6 10:40 000000017803
-rwxrwxr-x 1 root root  68277 Aug  6 10:40 000000017804
-rwxrwxr-x 1 root root 321799 Aug  6 10:40 000000017805
-rwxrwxr-x 1 root root  57720 Aug  6 10:40 000000017806
-rwxrwxr-x 1 root root  30014 Aug  6 10:40 000000017807
-rwxrwxr-x 1 root root 161049 Aug  6 10:40 000000017808
-rwxrwxr-x 1 root root  34090 Aug  6 10:40 000000017809
-rwxrwxr-x 1 root root   6662 Aug  6 10:40 000000017810
-rwxrwxr-x 1 root root 182991 Aug  6 10:40 000000017811
-rwxrwxr-x 1 root root   7005 Aug  6 10:40 000000017812
-rwxrwxr-x 1 root root  21500 Aug  6 10:40 000000017813
-rwxrwxr-x 1 root root 131538 Aug  6 10:40 000000017814
address@hidden:/media/deepspace/Temp/test#
 
 
 
But if I extract the same tar archive to a local filesystem folder like /tmp/test, everythings is ok. The date and timestamps are the original date and time from the tar archive.
 
address@hidden:/tmp/test# tar xvfz /media/deepspace/Temp/KSZ_DC_060879_20170222965.tar.gz
000000017795
000000017796
000000017797
000000017798
000000017799
000000017800
000000017801
000000017802
000000017803
000000017804
000000017805
000000017806
000000017807
000000017808
000000017809
000000017810
000000017811
000000017812
000000017813
000000017814
 
address@hidden:/tmp/test# l
insgesamt 3056
-rwxr-xr-x 1 root root 119542 Dez 22  2016 000000017795
-rwxr-xr-x 1 root root  59264 Dez 22  2016 000000017796
-rwxr-xr-x 1 root root 568240 Dez 22  2016 000000017797
-rwxr-xr-x 1 root root 640734 Dez 22  2016 000000017798
-rwxr-xr-x 1 root root  93144 Dez 22  2016 000000017799
-rwxr-xr-x 1 root root 347313 Dez 22  2016 000000017800
-rwxr-xr-x 1 root root 189032 Dez 22  2016 000000017801
-rwxr-xr-x 1 root root   7243 Dez 22  2016 000000017802
-rwxr-xr-x 1 root root  39876 Dez 22  2016 000000017803
-rwxr-xr-x 1 root root  68277 Dez 22  2016 000000017804
-rwxr-xr-x 1 root root 321799 Dez 22  2016 000000017805
-rwxr-xr-x 1 root root  57720 Dez 22  2016 000000017806
-rwxr-xr-x 1 root root  30014 Dez 22  2016 000000017807
-rwxr-xr-x 1 root root 161049 Dez 22  2016 000000017808
-rwxr-xr-x 1 root root  34090 Dez 22  2016 000000017809
-rwxr-xr-x 1 root root   6662 Dez 22  2016 000000017810
-rwxr-xr-x 1 root root 182991 Dez 22  2016 000000017811
-rwxr-xr-x 1 root root   7005 Dez 22  2016 000000017812
-rwxr-xr-x 1 root root  21500 Dez 22  2016 000000017813
-rwxr-xr-x 1 root root 131538 Dez 22  2016 000000017814
 
 
What is the problem ?? I believe it has something to do with the cifs mount to /media/deepspace but I don't have a clue where exactly the problem comes from. Can you help me ?
 
Regards,
Frank
 
 
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