Ok thanks I'll try that. I would've liked to know whether it's a physical
or software failure before reinstalling but it won't take very long, it's
mostly a file server. Perhaps there were too many power interruptions for
its taste.

Michel Lavoie
2851 rue des Fleurs
Québec, QC
G1V 1L6
Tél.: 418-353-2092
Cell.: 581-995-1258
[email protected]

On Wed, Oct 14, 2015 at 4:38 PM, William Hermans <[email protected]> wrote:

> Michel,
>
> In your place, I would probably make an entire backup of the eMMC. Then
> reinstall to double check it's not something that accidentally got messed
> up by <whatever>. I've had this happen to me once, or twice, and I could
> not tell you what went wrong. Also, for the record, I'm usually very
> meticulous when it comes to taking notes - So I have exact steps to
> reproduce things I've already done. But I think in both cases, the problem
> cleared up. The difference for me is that I develop my images using an
> sdcard, and not the eMMC.
>
> On Wed, Oct 14, 2015 at 9:56 AM, Michel Lavoie <[email protected]>
> wrote:
>
>> This thread seems to indicate that a physical problem within the eMMC is
>> quite unlikely and that badblocks should've been marked automatically:
>> https://groups.google.com/forum/embed/?place=forum/beagleboard&showsearch=true&showpopout=true&showtabs=true&hideforumtitle=true&parenturl=http%3A%2F%2Fbeagleboard.org%2FCommunity%2FForums#!searchin/beagleboard/emmc/beagleboard/6dJHbqgE7-c/uTSkbqCCJgAJ
>>
>> Should I format/reinstall?
>>
>> Thanks.
>>
>>
>> On Wednesday, October 14, 2015 at 12:51:37 PM UTC-4, Michel Lavoie wrote:
>>
>>> Hi,
>>>
>>> One of my BBB has been having problems with its filesystem for a while
>>> now and I think it originates from a physical problem on the eMMC but
>>> badblocks didn't find any error. It's running on Linux kernel 4.2.0-1-ARCH
>>> (Arch Linux) which is installed on the eMMC (no µSD card).
>>>
>>> The behavior is that after a while (generally a few days) the journal
>>> fails and the FS is remounted as read-only. The latest event's dmesg output
>>> is shown below. I starts with a "mmcqd/1: page allocation failure: order:3,
>>> mode:0xc020", follows with an aborted journal and the FS being remounted RO.
>>>
>>> I ran fsck.ext4 manually with the system unmounted (booted with a µSD
>>> card) and fixed several errors each time. As this event kept appearing
>>> afterwards I concluded that the must be something wrong with the eMMC. I
>>> then backed-up the partition (dd) and ran fsck with non-destructive
>>> badblocks (
>>> https://wiki.archlinux.org/index.php/Badblocks#read-write_Test_.28non-destructive.29)
>>> but no error was found apart from filesystem issues which fsck fixed (no
>>> bad sector).
>>>
>>> Am I right in assuming that this is most likely a physical problem with
>>> the eMMC? Is there a more appropriate test I should run to test the eMMC?
>>>
>>> Thanks,
>>>
>>> [274268.642991] mmcqd/1: page allocation failure: order:3, mode:0xc020
>>> [274268.649397] CPU: 0 PID: 92 Comm: mmcqd/1 Not tainted 4.2.0-1-ARCH #1
>>> [274268.655895] Hardware name: Generic AM33XX (Flattened Device Tree)
>>> [274268.662150] [<c001704c>] (unwind_backtrace) from [<c0014224>] (
>>> show_stack+0x20/0x24)
>>> [274268.670047] [<c0014224>] (show_stack) from [<c08b4f58>] (dump_stack+
>>> 0x24/0x28)
>>> [274268.677415] [<c08b4f58>] (dump_stack) from [<c01221f8>] (
>>> warn_alloc_failed+0xec/0x128)
>>> [274268.685478] [<c01221f8>] (warn_alloc_failed) from [<c0125304>] (
>>> __alloc_pages_nodemask+0x778/0x8f4)
>>> [274268.694667] [<c0125304>] (__alloc_pages_nodemask) from [<c01256c4>]
>>> (alloc_kmem_pages+0x40/0x110)
>>> [274268.703667] [<c01256c4>] (alloc_kmem_pages) from [<c013e4e0>] (
>>> kmalloc_order+0x20/0x38)
>>> [274268.711809] [<c013e4e0>] (kmalloc_order) from [<c013e524>] (
>>> kmalloc_order_trace+0x2c/0x94)
>>> [274268.720215] [<c013e524>] (kmalloc_order_trace) from [<c016454c>] (
>>> __kmalloc+0x1e8/0x24c)
>>> [274268.728450] [<c016454c>] (__kmalloc) from [<c04febf0>] (
>>> edma_prep_slave_sg+0xa4/0x2fc)
>>> [274268.736515] [<c04febf0>] (edma_prep_slave_sg) from [<c0717258>] (
>>> omap_hsmmc_request+0x430/0x528)
>>> [274268.745448] [<c0717258>] (omap_hsmmc_request) from [<c06f9f4c>] (
>>> __mmc_start_request+0x3c/0x58)
>>> [274268.754288] [<c06f9f4c>] (__mmc_start_request) from [<c06fa0c8>] (
>>> mmc_start_request+0x160/0x298)
>>> [274268.763201] [<c06fa0c8>] (mmc_start_request) from [<c06fae3c>] (
>>> mmc_start_req+0x2a4/0x3d8)
>>> [274268.771611] [<c06fae3c>] (mmc_start_req) from [<c070b568>] (
>>> mmc_blk_issue_rw_rq+0xb8/0xaac)
>>> [274268.780100] [<c070b568>] (mmc_blk_issue_rw_rq) from [<c070c1b8>] (
>>> mmc_blk_issue_rq+0x25c/0x4ec)
>>> [274268.788943] [<c070c1b8>] (mmc_blk_issue_rq) from [<c070cbf0>] (
>>> mmc_queue_thread+0xa8/0x170)
>>> [274268.797470] [<c070cbf0>] (mmc_queue_thread) from [<c00659b8>] (
>>> kthread+0xe4/0xfc)
>>> ...
>>
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