[dm-crypt] Alignment issue with 4K disk
.. ink ..
mhogomchungu at gmail.com
Thu Jan 7 19:00:41 CET 2016
There is another (i think) related problem that was reported here
Are these warnings serious or can they be ignored?
On Tue, Jan 5, 2016 at 1:14 PM, Yves-Alexis Perez <corsac at debian.org> wrote:
> On mar., 2016-01-05 at 00:02 +0100, Sven Eschenberg wrote:
>> Hi Alexis,
> (Yves-Alexis actually)
>> I stumbled over this line:
>> I/O size (minimum/optimal): 4096 bytes / 33553920 bytes
>> The latter resembles 65535 sectors (512 Byte logical ones), which
>> explains why the automated alignment was done at sector 65535. This
>> value seems extremely weird though.
>> You said the drive was external, connected how? USB maybe?
> Yes. It's a Samsung T3 disk, so everything is integrated (disk+sata/usb3
> adapter), not much chance I can do anything here.
> I'll try to force the alignment to 2048s for part1 and see what happens.
>> Can you take a look at hdparm -I /dev/sdc? Anything unusual there?
> I'll try tonight (I don't have it at hand).
> Thanks for the pointers though.
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