On Thu, Jun 12, 2014 at 9:14 AM, Frank Talamy <[email protected]> wrote:
>
> Hi everyone,
>
> I've been using the BeagleBone Black for a while now. I got my apps running
> just fine for like 2-3 months straight, not a single problem.
>
> OS : Debian Wheezy installed on Samsung 4GB µSD card.
> Cross compilation platform : ELDK (armv7-hf)
>
> I've tested my apps on different brands of SD Cards (Kingston, samsung,
> sandisk ...) and have killed several Kingston cards in a matter of days. By
> killing, I mean the BeagleBone wasn't booting on them anymore and they were
> no longer mounted when plugged via a USB-Card-reader. I had this kind of
> dmesg output (the [...] here means a lot of the same 7 lines in a loop):
>
> [626903.528266] sd 11:0:0:0: [sdd] Device not ready
> [626903.528268] sd 11:0:0:0: [sdd]  Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [626903.528272] sd 11:0:0:0: [sdd]  Sense Key : Not Ready [current]
> [626903.528275] sd 11:0:0:0: [sdd]  Add. Sense: Medium not present
> [626903.528279] sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 00 00 00 00 00 08
> 00
> [626903.528287] end_request: I/O error, dev sdd, sector 0
> [626903.528290] Buffer I/O error on device sdd, logical block 0
> [626903.530266] sd 11:0:0:0: [sdd] Device not ready
> [626903.530269] sd 11:0:0:0: [sdd]  Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [626903.530272] sd 11:0:0:0: [sdd]  Sense Key : Not Ready [current]
> [626903.530275] sd 11:0:0:0: [sdd]  Add. Sense: Medium not present
> [626903.530279] sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 00 00 00 00 00 08
> 00
> [626903.530287] end_request: I/O error, dev sdd, sector 0
> [626903.530290] Buffer I/O error on device sdd, logical block 0
> [626903.532391] sd 11:0:0:0: [sdd] Device not ready
> [626903.532393] sd 11:0:0:0: [sdd]  Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [626903.532396] sd 11:0:0:0: [sdd]  Sense Key : Not Ready [current]
> [626903.532400] sd 11:0:0:0: [sdd]  Add. Sense: Medium not present
> [626903.532404] sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 00 00 08 00 00 08
> 00
> [626903.532412] end_request: I/O error, dev sdd, sector 8
> [...]
> [626903.812724] sd 11:0:0:0: [sdd] Device not ready
> [626903.812725] sd 11:0:0:0: [sdd]  Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [626903.812728] sd 11:0:0:0: [sdd]  Sense Key : Not Ready [current]
> [626903.812731] sd 11:0:0:0: [sdd]  Add. Sense: Medium not present
> [626903.812734] sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 00 00 00 00 00 08
> 00
> [626903.812740] end_request: I/O error, dev sdd, sector 0
> [626903.814725] sd 11:0:0:0: [sdd] Device not ready
> [626903.814728] sd 11:0:0:0: [sdd]  Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [626903.814731] sd 11:0:0:0: [sdd]  Sense Key : Not Ready [current]
> [626903.814735] sd 11:0:0:0: [sdd]  Add. Sense: Medium not present
> [626903.814739] sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 00 00 00 00 00 08
> 00
> [626903.814747] end_request: I/O error, dev sdd, sector 0
> [626903.820536] sdd: detected capacity change from 3947888640 to 0
>
>
> That's why I chose to use Samsung sd cards instead. Everything was fine for
> 2-3 whole months, but now I had one of my systems getting the exact same
> symptoms as when using the Kingston cards.
>
> Did anyone experience this kind of problem using his beagle bone so far ?
> Does anyone have an idea of something that could damage the SD card so much
> which is or isn't directly related to the use of a beagle bone black (Heat,
> compulsive logging, ...) ?
> Can anyone suggest a brand that has solid and enduring SD Cards for an app
> that is logging quite regularly ?

I use SanDisk Ultra's 16GB's on my bbw & bbb's on my gcc testing farm.
Those microSD's have been running fine for almost a year now, under
100% load for 24/7 bulding/testing gcc stable branches. (lots of file
deletions/creations).  Previously to that i had been running SanDisk
Ultra's 8GB variants, but starting with gcc-4_8-branch i began to run
out of build space.

http://rcn-ee.homeip.net:81/dl/gcc/archive/20140610-11:24-gitb28747e-gcc-4_9-branch-am335x-boneblack-512mb-1/

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/

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