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Open Source and information security mailing list archives
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Date: Wed, 1 Oct 2014 10:50:18 +0200 From: Jan Kara <jack@...e.cz> To: Henrique de Moraes Holschuh <hmh@....eng.br> Cc: Pavel Machek <pavel@....cz>, Theodore Ts'o <tytso@....edu>, kernel list <linux-kernel@...r.kernel.org>, jack@...e.cz, linux-ext4@...r.kernel.org, adilger.kernel@...ger.ca, Dmitry Monakhov <dmonakhov@...nvz.org>, linux-scsi@...r.kernel.org Subject: Re: ext4: 3.17? problems On Tue 30-09-14 20:18:01, Henrique de Moraes Holschuh wrote: > 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? Nothing I'm aware of but this is more a question for SCSI guys (added to CC). Honza -- Jan Kara <jack@...e.cz> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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