From: Austin S Hemmelgarn <ahferroin7@gmail.com>
To: sander@humilis.net
Cc: Aastha Mehta <aasthakm@gmail.com>,
linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: question regarding caching
Date: Fri, 03 Jan 2014 07:12:07 -0500 [thread overview]
Message-ID: <52C6A917.90502@gmail.com> (raw)
In-Reply-To: <20140103083950.GB29349@panda>
On 2014-01-03 03:39, Sander wrote:
> Austin S Hemmelgarn wrote (ao):
>> The data is probably still cached in the block layer, so after
>> unmounting, you could try 'echo 1 > /proc/sys/vm/drop_caches'
>> before mounting again, but make sure to run sync right before
>> doing that, otherwise you might lose data.
>
> Lose data? Where you get this from?
>
> Sander
>
Sorry, misread the documentation, thought it said destructive where it
really said non-destructive.
It's still a good idea to run sync before trying to clear the caches
though, cause dirty objects aren't freeable.
next prev parent reply other threads:[~2014-01-03 12:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-31 2:24 question regarding caching Aastha Mehta
2013-12-31 3:15 ` Kai Krakow
2013-12-31 17:02 ` Alex Elsayed
2013-12-31 18:27 ` Austin S Hemmelgarn
2014-01-03 8:39 ` Sander
2014-01-03 12:12 ` Austin S Hemmelgarn [this message]
2014-01-07 14:50 ` Aastha Mehta
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