GNU bug report logs - #7420
[Feature request]: add option to dd to fsync|fdatasync after each block written

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From: Марк Коренберг <socketpair <at> gmail.com>
To: 7420 <at> debbugs.gnu.org
Subject: bug#7420: [Feature request]: add option to dd to fsync|fdatasync after each block written
Date: Wed, 17 Nov 2010 15:19:33 +0500

[Feature request]: add option to dd to fsync|fdatasync after each block written

Suppose I want to show progress with:

pv image.img | dd bs=16M of=/dev/sdc

it will not work, as dd will write to sdc momentarily. dd will hang on
close(1) waiting for actual write to complete (tested on USB stick
Linux 2.6.32)

I decide to use  oflag=direct. It help, OK. But: http://kerneltrap.org/node/7563

It will be nice if, dd will be able to fsync/fdatasync after each block.

I think, it is useful for other usages.

-- 
Segmentation fault

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