Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.unix.programmer > #13634

Re: How to check for error with write(2)

Show all headers | View raw

Philip Guenther <guenther@gmail.com> writes:

<snip>

but down below the ERRORS section, in the NOTES:

       A successful return from write() does not make any guarantee that  data
       has  been  committed  to  disk.  On some filesystems, including NFS, it
       does not even guarantee that space has successfully been  reserved  for
       the  data.   In  this case, some errors might be delayed until a future
       write(), fsync(2), or even close(2).  The only way to  be  sure  is  to
       call fsync(2) after you are done writing all your data.

Successfully writing to the file system isn't the same thing as
successfully writing to actual nonvolatile storage (ie the disk).  Much
as we wish it were (and in all but a microscopic subset of cases we can
get away with pretending).

Back to comp.unix.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

How to check for error with write(2) Steve Keller <keller.steve@gmx.de> - 2021-12-16 18:58 +0100
  Re: How to check for error with write(2) scott@slp53.sl.home (Scott Lurndal) - 2021-12-16 18:26 +0000
    Re: How to check for error with write(2) Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2021-12-20 13:52 +0000
  Re: How to check for error with write(2) Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-12-16 18:49 +0000
    Re: How to check for error with write(2) Rainer Weikusat <rweikusat@talktalk.net> - 2021-12-16 19:00 +0000
  Re: How to check for error with write(2) Rainer Weikusat <rweikusat@talktalk.net> - 2021-12-16 19:06 +0000
  Re: How to check for error with write(2) Jorgen Grahn <grahn+nntp@snipabacken.se> - 2021-12-16 22:34 +0000
    Re: How to check for error with write(2) Steve Keller <keller.steve@gmx.de> - 2021-12-17 04:38 +0100
      Re: How to check for error with write(2) Rainer Weikusat <rweikusat@talktalk.net> - 2021-12-17 15:14 +0000
      Re: How to check for error with write(2) Jorgen Grahn <grahn+nntp@snipabacken.se> - 2021-12-18 10:25 +0000
  Re: How to check for error with write(2) Philip Guenther <guenther@gmail.com> - 2021-12-16 15:04 -0800
    Re: How to check for error with write(2) Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2021-12-16 20:10 -0700
    Re: How to check for error with write(2) Steve Keller <keller.steve@gmx.de> - 2021-12-17 04:35 +0100
      Re: How to check for error with write(2) Philip Guenther <guenther@gmail.com> - 2021-12-18 14:58 -0800
        Re: How to check for error with write(2) scott@slp53.sl.home (Scott Lurndal) - 2021-12-19 16:07 +0000

csiph-web