From: Alexander Tomokhov <alexoundos@ya.ru>
To: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Does data checksumming remain for files with No_COW file attribute?
Date: Sat, 24 Sep 2016 15:26:14 +0300 [thread overview]
Message-ID: <767591474719974@web21o.yandex.ru> (raw)
There is an unanswered question at stackexchange:
http://unix.stackexchange.com/q/303130/41572
Assume that we don't invoke mount options like nodatacow and nodatasum - operate only at file attributes level, which are controlled with lsattr/chattr. So does setting No_COW on a file (chattr +C) imply disabling data checksumming on it? The same way as mount options behave (nodatacow implies nodatasum)? Moreover may it disable checksumming only for newly written extents and keep for reading existing ones?
next reply other threads:[~2016-09-24 12:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-24 12:26 Alexander Tomokhov [this message]
2016-09-24 12:37 ` Does data checksumming remain for files with No_COW file attribute? Hugo Mills
2016-09-24 23:25 ` Alexander Tomokhov
2016-09-24 23:50 ` Adam Borowski
2016-09-25 5:44 ` Duncan
2016-09-26 20:41 ` Adam Borowski
2016-09-24 12:40 ` Roman Mamedov
2016-09-24 12:43 ` Hugo Mills
2016-09-24 18:11 ` Christoph Anton Mitterer
2016-09-25 13:49 ` Goffredo Baroncelli
2016-09-25 19:53 ` Christoph Anton Mitterer
2016-09-26 11:11 ` Austin S. Hemmelgarn
2016-09-24 18:09 ` Christoph Anton Mitterer
2016-09-24 21:44 ` Adam Borowski
2016-09-24 22:52 ` Christoph Anton Mitterer
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