From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
To: Pavel Machek <pavel@ucw.cz>
Cc: "Theodore Ts'o" <tytso@mit.edu>,
kernel list <linux-kernel@vger.kernel.org>,
jack@suse.cz, linux-ext4@vger.kernel.org,
adilger.kernel@dilger.ca, Dmitry Monakhov <dmonakhov@openvz.org>
Subject: Re: ext4: 3.17? problems
Date: Tue, 30 Sep 2014 20:18:01 -0300 [thread overview]
Message-ID: <20140930231801.GB729@khazad-dum.debian.net> (raw)
In-Reply-To: <20140930210108.GB14283@amd>
On Tue, 30 Sep 2014, Pavel Machek wrote:
> > > So I had to hard power-down the machine. That should be perfectly
> > > safe, as ext4 has a journal, and this is plain SATA disk, right?
> > Yes, it should be safe.
>
> Good.
...
> Is there some phase during shutdown where journalling no longer
> protects fs integrity?
Hmm... what kind of backing device? Because I have Crucial/Micron M500 SSDs
here that _always_ complain (in a SMART counter/attribute) that they have
been subject to a sudden poweroff *when subject to a normal system
shutdown*.
This is scaring me a great deal. Are we doing something different for SSDs
in the scsi-sd or libata shutdown paths?
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
next prev parent reply other threads:[~2014-09-30 23:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-28 10:44 Pavel Machek
2014-09-28 12:46 ` Theodore Ts'o
2014-09-30 21:01 ` Pavel Machek
2014-09-30 23:18 ` Henrique de Moraes Holschuh [this message]
2014-10-01 8:50 ` Jan Kara
2014-10-01 8:48 ` Jan Kara
2014-09-29 9:36 ` Dmitry Monakhov
2014-09-29 11:44 ` Jan Kara
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