Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: kde-runtime (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1424424
Title:
SMB KIO Slave Mangles Time/Date Stamps
Status in kde-runtime package in Ubuntu:
Confirmed
Bug description:
NOTE: The "What package" question above was left unanswered because
this COULD be due to any of several packages. The primary suspects
are:
"kde-runtime"
(Version 4:4.13.3-0ubuntu0.2 tested)
Various Samba-related ("samba-common", "samba-common-bin", "samba-libs",
"libsmbclient", possibly others)
(Version 2.4.1.6+dfsg-1ubuntu2.14.04.5 tested)
This bug is VERY similar -- but apparently NOT quite identical -- to
two others which have been previously reported:
https://bugs.launchpad.net/ubuntu/+source/samba/+bug/73452
https://bugs.launchpad.net/ubuntu/+source/samba/+bug/122302
both of which have been open for roughly eight years without ever
being properly addressed.
HOWEVER, in both of those cases, the reporters mentioned use of
Nautilus as the GUI file manager used to move/copy the files, which in
turn implies the use of Gnome. But in my case, Gnome was NOT in use
(or even installed on the system), which I believe is significant in
light of the troubleshooting done thus far, which seems to point to a
KDE-specific package.
In any event, the root cause of all three instances may or may not be
the same, and I have no way to definitively determine this. Hence, I
am filing this a a separate bug, and will leave it to others to
determine if it really is a duplicate or not. If indeed it is a
duplicate of either/both of the previously reported bugs, it is long
past time for it to be FIXED!
I recently ran across this bug after setting up a new desktop
workstation under Kubuntu 14.04.2 LTS, which includes KDE v4.13.3.
(Historically, our Linux-based workstations have used other Debian-
based distributions, such as Simply MEPIS and Debian itself.) After
some discussion in another venue (cf.
<https://www.kubuntuforums.net/showthread.php?67480-Time-Stamping-
Weirdness>), I found a viable work-around (Thank You, "kubicle"!); but
the malfunction itself remains unrepaired. Hence this bug report.
The core issue is that, when moving or copying files between the
workstation and a general-purpose fileserver (running Debian and
Samba) elsewhere on our LAN, and using the SMB KIO Slave (i.e., the
"remote" URI starts with "smb://"), the original date/time stamps on
the files being moved/copied are, more often than not, lost in the
process and the files become stamped with the current date & time. I
refer you to the Kubuntu Forums thread cited above for further
details; but a few key points are:
-- When moving/copying files from the workstation to the server, all
folders and files become stamped with the current date/time, every
time (or at least as close to every time as I've been able to
discern).
-- When moving/copying files from the server to the workstation, the
behavior is INCONSISTENT: Some files will still have their original
date/time-stamps, while others will be stamped with the current
date/time -- and there's no telling which (or how many) will be which.
If, for example, you're copying a folder with a dozen files in it,
perhaps three or four will retain their correct time-stamps; the rest
will be re-stamped with the current date/time. But again, this is
VERY inconsistent and unpredictable; sometimes all files will be re-
stamped, sometimes only a few (more often the former than the latter,
it seems).
-- This problem affects ONLY the workstation running Kubuntu.
Another workstation on the same LAN running straight Debian (Stable,
v7.8) & "generic" KDE (v4.8.4) does NOT exhibit the problem, ever; and
the server (to/from which the files are being copied/moved) is the
same in both cases. Notably, the suspect packages ("kde-runtime" and
various Samba-related packages) ALL carry Ubuntu-specific version
numbers on the affected system (and apparently have done so for some
time). So, while it is perhaps possible that the bug is attributable
to KDE itself (or maybe even to Samba), I find this highly doubtful.
For that to be the case, the bug would have to be newly-created since
the release of KDE v4.8.4, which simply does not jibe with the fact
that essentially the same problem has been reported against various
Ubuntu-specific packages going back to 2006 (albeit, it was blamed
exclusively on Samba at that time, which I do not believe to be the
case). Further, I have yet to find any reference to similar issues
from anyone NOT running Ubuntu or Kubuntu.
-- The user-level "shell" application used to initiate the copy/move
operations appears to be irrelevant. As noted above, the originators
of both of those 8-year-old bug reports were using Nautilus. But in
my case, Dolphin was used. Further, Dolphin was used on BOTH
workstation systems: One of them works correctly, the other doesn't;
so obviously, the key variable lies elsewhere, presumably somewhere
"deeper" in the system.
-- In the previous reports the misbehavior was reported in the
context of copy/move operations involving a "real" Windows-based
server. But in THIS case, Windows is not being used at all. Again,
that strongly implies that the problem actually resides in the
workstation(s).
-- The problem does NOT manifest itself when using a different KIO
Slave, even on the same (problematic) system. The "work-around" noted
above was to access the server via the sFTP protocol rather than SMB,
which of course uses the FTP KIO Slave to do teh "grunt work", rather
than the SMB KIO Slave. Since implementing that work-around, I have
experienced zero time-stamp errors, while all the other variables
(same server, use of Dolphin on the local workstation, etc.) have
remained the same.
If there is any further information required, I would be happy to
supply it (as long as I know how to get it).
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