Groups > alt.comp.os.windows-11 > #17808

Re: MS Shadow Copy service

From	"Carlos E.R." <robin_listas@es.invalid>
Newsgroups	alt.comp.os.windows-11
Subject	Re: MS Shadow Copy service
Date	2025-03-17 21:34 +0100
Message-ID	<ikdmalx5ql.ln2@Telcontar.valinor> (permalink)
References	(2 earlier) <vr89ec$3d9oh$1@dont-email.me> <ldglalx0ej.ln2@Telcontar.valinor> <vr9ess$ddei$1@dont-email.me> <4g7malxthr.ln2@Telcontar.valinor> <vr9t2e$pi7r$1@dont-email.me>

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On 2025-03-17 20:27, Paul wrote:
> On Mon, 3/17/2025 2:50 PM, Carlos E.R. wrote:
>> On 2025-03-17 16:25, Paul wrote:
> 
>>>       fwontwrite64()
>>
>> Sigh. Reir para no llorar. Spanish saying. Laugh so as not to cry.
>>
> To be clear, this is unlikely to affect anyone, except
> I can find questions from developers regarding the status
> of the issue.
> 
> My purpose in using it, is as a "student exercise" in
> why we don't do it this way. It's possible (I haven't checked
> yet), that as a single kernel call, it could "lock" the OS and
> not play nicely. But then, as a developer, if you choose to
> write your code that way, that's your choice. The compiler people
> know it is not their job, to do engineering for people. The
> option should be left open, to make it any size you might want,
> as the size_t implies. Then if you don't like the dynamic
> response of the thing, you'll change your code.
> 
> I'm a bit curious how Windows Defender handles the
> shadowing of a large request like that. Does it
> bug out ? Dunno. It's one of the reasons for testing
> and investigating... if it had worked.

You can make a file copy in Linux with dd, and assign a huge cache:

bs=16G

It will read up to 16 gigs into ram, them write it :-D

I learned it as I saw the system I had then starting to swap and sweat. 
It surely obeyed my orders :-)


-- 
Cheers, Carlos.

Thread

MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-16 17:02 -0400
  Re: MS Shadow Copy service User One <noreply@invalid.com> - 2025-03-16 22:03 +0000
    Re: MS Shadow Copy service Stan Brown <the_stan_brown@fastmail.fm> - 2025-03-16 20:42 -0700
    Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-29 00:50 -0400
      Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-29 01:38 -0400
  Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-16 21:49 -0400
    Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 00:46 -0400
      Re: MS Shadow Copy service "Carlos E.R." <robin_listas@es.invalid> - 2025-03-17 13:16 +0100
        Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 11:25 -0400
          Re: MS Shadow Copy service "Carlos E.R." <robin_listas@es.invalid> - 2025-03-17 19:50 +0100
            Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 15:27 -0400
              Re: MS Shadow Copy service "Carlos E.R." <robin_listas@es.invalid> - 2025-03-17 21:34 +0100
                Re: MS Shadow Copy service Frank Slootweg <this@ddress.is.invalid> - 2025-03-18 14:45 +0000
                Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-18 20:13 -0400
    Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 01:07 -0400
      Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-27 01:00 -0400
        Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-27 02:51 -0400
  Re: MS Shadow Copy service Newyana2 <newyana@invalid.nospam> - 2025-03-17 08:41 -0400
    Re: MS Shadow Copy service Frank Slootweg <this@ddress.is.invalid> - 2025-03-17 16:45 +0000
      Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 15:32 -0400
        Re: MS Shadow Copy service Newyana2 <newyana@invalid.nospam> - 2025-03-17 17:27 -0400
          Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 18:16 -0400
          Re: MS Shadow Copy service Frank Slootweg <this@ddress.is.invalid> - 2025-03-18 13:49 +0000
  Re: MS Shadow Copy service Frank Slootweg <this@ddress.is.invalid> - 2025-03-17 16:36 +0000
    Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-27 01:05 -0400
      Re: MS Shadow Copy service Char Jackson <none@none.invalid> - 2025-03-28 00:27 -0500
        Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-28 12:17 -0400
  Re: MS Shadow Copy service ...w¡ñ§±¤ñ  <winstonmvp@gmail.com> - 2025-03-17 10:44 -0700
    Re: MS Shadow Copy service Newyana2 <newyana@invalid.nospam> - 2025-03-17 17:28 -0400
      Re: MS Shadow Copy service Paul <nospam@needed.invalid> - 2025-03-17 18:50 -0400
      Re: MS Shadow Copy service ...w¡ñ§±¤ñ  <winstonmvp@gmail.com> - 2025-03-20 11:52 -0700
        Re: MS Shadow Copy service micky <NONONOmisc07@fmguy.com> - 2025-03-27 01:09 -0400

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