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Subject: Re: Samsung Memory MB-MP64D 64GB EVO MicroSDXC UHS-I Grade Class 10 MicroSDXC in Sandisk e260v1 does not work

Re: Samsung Memory MB-MP64D 64GB EVO MicroSDXC UHS-I Grade Class 10 MicroSDXC in Sandisk e260v1 does not work

From: Martin Steigerwald <Martin_at_lichtvoll.de>
Date: Sun, 31 Aug 2014 13:25:51 +0200

Am Sonntag, 31. August 2014, 12:06:08 schrieb Martin Steigerwald:
> Hi!
>
> Important things first:
>
> The card does work in Sandisk e260v1 with Rockbox 3.13 if reformatted to
> FAT32 and only with partition type 0x0c, as in:

Lol, it will take abotu 45 minutes to copy the data from the older Samsung 32 GB SD card:

merkaba:~> LANG=C df -hT -t vfat
Filesystem Type Size Used Avail Use% Mounted on
/dev/sdd1 vfat 30G 29G 574M 99% /media/martin/MUSIK
/dev/mmcblk0p1 vfat 59G 4.6G 54G 8% /media/martin/MUSIK1

And I am seeing a rather suboptimal I/O behavior here while copying with
rsync and also write errors.

merkaba:~> vmstat 1
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
 r b swpd free buff cache si so bi bo in cs us sy id wa st
 0 1 814240 443144 20384 11255576 2 7 2110 982 113 113 23 7 66 3 0
 0 1 814240 434452 20384 11255704 0 0 0 8200 1249 2817 5 4 68 23 0
 2 1 814240 434820 20384 11255736 0 0 0 8192 1009 1602 3 4 70 24 0
 0 1 814240 430208 20384 11267708 0 0 6017 5915 1512 2924 4 5 69 23 0
 0 1 814240 391708 20388 11303236 0 0 17793 0 1916 4750 5 5 68 22 0
 0 1 814240 353352 20388 11337796 0 0 17408 0 1430 4093 4 5 69 22 0
 2 0 814240 414296 20392 11282744 0 0 17152 8 1667 4308 6 7 66 21 0
 0 1 814240 375704 20392 11317868 0 0 17536 0 1392 4088 4 4 70 22 0
 0 1 814240 434160 20396 11264512 0 0 17537 0 1643 4308 6 6 67 21 0
 0 1 814240 399668 20396 11296056 0 0 15782 10240 1394 3906 4 4 70 22 0
 0 1 814240 399280 20396 11296260 0 0 0 10240 1057 1163 2 3 71 24 0
 0 1 814236 399280 20396 11296260 0 0 0 8192 1048 1479 2 3 71 24 0
 0 1 814236 399280 20396 11296260 0 0 0 8264 1111 1734 3 3 70 24 0
 1 1 814236 399280 20396 11296324 0 0 0 10240 1016 1129 2 3 71 24 0
 0 1 814236 399280 20396 11296324 0 0 0 10608 1410 2422 3 4 69 24 0
 0 1 814236 398908 20396 11296612 0 0 0 8192 1024 1418 2 3 71 24 0
 0 1 814236 398892 20396 11296612 0 0 0 10240 1203 1792 3 4 69 24 0
 0 1 814236 398892 20396 11296612 0 0 0 8192 945 1135 2 3 72 24 0
 0 1 814236 399052 20396 11296612 0 0 4 10928 1504 1681 3 4 71 23 0
 0 1 814236 398980 20396 11296900 0 0 0 13720 1432 1393 2 3 70 25 0
 0 1 814236 393812 20400 11301772 0 0 2561 6850 1268 1869 3 4 69 24 0
 1 1 814236 355592 20400 11337284 0 0 17538 0 2086 5423 6 7 67 21 0
 0 1 814236 413728 20404 11284668 0 0 17666 3 1673 5079 5 6 67 22 0
 0 1 814236 374276 20404 11320296 0 0 17666 0 1507 4556 5 5 69 22 0
 0 1 814236 431964 20408 11268000 0 0 17794 0 2118 5525 13 7 58 21 0
 1 1 814236 394028 20408 11303012 0 0 17410 0 1714 5922 7 7 65 21 0
 1 0 814236 414568 20412 11283144 0 0 17666 0 1684 5816 6 6 67 21 0

[Bug 83561] New: Suboptimal chainsaw behavior in copying between to SD cards

[Bug 83571] New: errors on writing on Samsung MicroSDXC 64 GB card in MMC card reader in ThinkPad T520

both on bugzilla.kernel.org

I bet both are kernel bugs. I donĀ“t think the card is defective.

I hope I find some way to transfer the files from old card to new one. Maybe
I need a new USB based card reader if the MMC/SD driver in Linux Kernel is
broke with that Ricoh reader in this ThinkPad.

Ciao,

-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7
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Received on 2014-08-31

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