[R] Corrupting files while copying (was Re: saveRDS() and readRDS() Why? [solved, pretty much anyway])

[Patrick Connolly]

Thanks William,

I've used Dolphin for years and never encountered that phenomenon.
Even so, that description doesn't fit what's going on here.  1.7
kilobytes is hardly a 'large directory'.

The problem seems to be with the way VirtualBox mounts directories
which isn't an R issue, nor is the fact that copying from Linux to
Windows isn't affected.  But the fact that it happens only with rds
files that use the name of the R object as part of their own names
must be an R issue (that surfaces only when other conditions are
present).

Theories short of divine intervention appreciated.



On Tue, 13-Nov-2018 at 02:22PM -0800, William Dunlap wrote:

|> Perhaps you got bitten by Dolphin's non-modal dialogs, as described in
|> https://userbase.kde.org/Dolphin/File_Management:
|> 
|> Non Modal Dialogs
|> 
|> When Moving, Copying or Deleting files/directories the dialog disappears
|> even when the operation has not yet completed. A progress bar then appears
|> in the bottom right of the screen, this then disappears also, if you want
|> see the progress you need to click a small (i) information icon in the
|> system tray.
|> 
|> 
|> Warning
|> New users who are not used to this way of working (and even experienced
|> users) can get caught out by this, if you are Moving, Copying or Deleting
|> large directories then you need to use the icon to monitor the progress of
|> your operation. If you don't then any subsequent actions you do, may well
|> use an incomplete file structure resulting in corrupted files. You have
|> been warned!
|> 
|> Bill Dunlap
|> TIBCO Software
|> wdunlap tibco.com
|> 
|> On Tue, Nov 13, 2018 at 2:10 PM, p_connolly <p_connolly using slingshot.co.nz>
|> wrote:
|> 
|> > This is getting more strange.
|> >
|> > I normally copy from the shared folder to the appropriate directory using
|> > Dolphin, the KDE file manager.  If instead I use the standard bash cp
|> > command, no corruption happens -- at least with the limited testing I have
|> > done.  There also seems to be no problem copying from Linux to Windows.  I
|> > installed R-3.5.1 for Windows just to eliminate that possible issue.
|> >
|> > However, R has *something* to do with it because it was used to make the
|> > .rds file.  Just how the relationship between the name of the R object and
|> > the name of the .rds file comes into it, I can't imagine.
|> >
|> > Thanks for the suggestion William.
|> >
|> >
|> > On 2018-11-14 06:26, William Dunlap wrote:
|> >
|> >> It seems like copying the files corrupted them. How did you copy them
|> >> (with R
|> >> or cp or copy or ftp, etc.)?  I don't see how this has anything to do
|> >> with R.
|> >>
|> >> Bill Dunlap
|> >> TIBCO Software
|> >> wdunlap tibco.com [1]
|> >> On Mon, Nov 12, 2018 at 7:10 PM, p_connolly
|> >> <p_connolly using slingshot.co.nz> wrote:
|> >>
|> > [...]
|> >
|> >

-- 
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   ___    Patrick Connolly   
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