From: Achim Gratz <Stromeko@nexgo.de>
To: linux-btrfs@vger.kernel.org
Subject: Re: My first attempt to use btrfs failed miserably
Date: Mon, 03 Feb 2020 20:14:47 +0100 [thread overview]
Message-ID: <87o8uffpp4.fsf@Rainer.invalid> (raw)
In-Reply-To: CACN+yT_AYiLc29M41U+WrQHtk4t==D-4AkH+wRROKJY=WstGAA@mail.gmail.com
Skibbi writes:
> So I decided to try btrfs on my new portable WD Password Drive
> attached to Raspberry Pi 4.
That's an actual harddisk that likely pulls a lot of peak current, just
under the limit allowed by the USB standard. You are begging for
trouble connecting that to the rasPi without an extra PSU for the drive.
I don't have that exact model here, but if you can feed external power
into the drive, do it. Second, the rasPi4 itself is a bit of a power
hog, so you will need a stable power supply there as well (250mV of
overvoltage don't hurt either), even when the drive doesn't draw current
from the USB port. The annoying thing with drives on USB is that they
may well seem to be OK if you didn't specifically look for
disconnect/reconnect events, but each time it happens that data is most
likely lost anyway. Btrfs just tells you sooner than some other fs.
Regards,
Achim.
--
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+
Samples for the Waldorf Blofeld:
http://Synth.Stromeko.net/Downloads.html#BlofeldSamplesExtra
prev parent reply other threads:[~2020-04-05 9:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-02 12:45 My first attempt to use btrfs failed miserably Skibbi
2020-02-02 12:56 ` Qu Wenruo
2020-02-02 13:22 ` Stephan von Krawczynski
2020-02-02 20:04 ` Chris Murphy
2020-02-02 13:29 ` Martin Raiber
2020-02-02 13:36 ` Qu Wenruo
2020-02-02 14:14 ` Roman Mamedov
2020-02-02 14:45 ` Swâmi Petaramesh
2020-02-02 23:34 ` Zygo Blaxell
2020-02-03 6:28 ` Skibbi
2020-02-03 16:12 ` Chris Murphy
2020-02-03 19:01 ` Marc Joliet
2020-02-03 7:00 ` Swâmi Petaramesh
2020-02-02 19:56 ` Chris Murphy
2020-02-03 6:38 ` Skibbi
2020-02-03 6:51 ` Qu Wenruo
2020-02-03 8:42 ` Skibbi
2020-02-03 10:10 ` Qu Wenruo
2020-02-03 10:17 ` Qu Wenruo
2020-02-03 10:56 ` Skibbi
2020-02-03 11:09 ` Qu Wenruo
2020-02-03 16:17 ` Chris Murphy
2020-02-02 19:57 ` Chris Murphy
2020-02-03 19:14 ` Achim Gratz [this message]
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