[ale] Flash drive format - kworker errors

Tom & JaVonn PairOfTwins at mindspring.com
Tue Jul 19 09:58:31 EDT 2016 

DJ:

I've read about fake flash drives, but am reluctant to decide that PNY 
and Best Buy would risk their reputation knowingly selling such a thing:

http://www.bestbuy.com/site/pny-turbo-attache-4-64gb-usb-3-0-type-a-flash-drive-blue/4471301.p?id=1219751167918&skuId=4471301

I'll try changing to GPT  and format again...

Tom

On 07/19/2016 07:08 AM, DJ-Pfulio wrote:
> None ideas on this specific effort, but there are lots or fake flash memory
> devices out there. My first order of business with all of them is to write the
> amount of data on them that it is supposed to support, then read that back off
> and verify that every bit written was also stored.  Lots of these devices only
> have 8G or half of the amount claimed on the package, but they change to chip to
> report 64G. The only way to know is by shoving data on and pulling it off then
> verifying 59G (format wasted space) or so pulled off matches.
>
> I've had issues with 64 and larger flash devices not working except with FAT32
> formats, but my sample size is only 2, so that shouldn't be indicative of
> anything really. Not exactly a large statistical sample size for anyone else to
> make decisions.
>
> Sadly, the main devices I use flash memory WITH only support NTFS or FAT32.
> Don't use flash to extend Linux system storage myself.
>
> On 07/18/2016 08:43 PM, Tom & JaVonn wrote:
>> All:
>>
>> All my searches have turned up few clues.
>>
>> Bought a pair of PNY 64 GB USB 3 Type A flash drives on sale, and they're highly
>> rated.  Tried to format ext3 and it took literally a couple of hours, though it
>> looked normal at first.  Tried in both USB 3 and USB 2 slots of original PC,
>> then again in USB 2 of another PC.
>>
>> syslog shows lots of Call Traces by kworker.
>>
>> Here's my second attempt, plain ext2:
>> ----------------------------------------------------------------------------------------------------
>>
>> ubuntu-gnome at ubuntu-gnome:~$ sudo mke2fs -m 2 /dev/sda1
>> mke2fs 1.42.13 (17-May-2015)
>> Creating filesystem with 15728640 4k blocks and 3932160 inodes
>> Filesystem UUID: 03ce1128-2ef5-4d2c-926f-3a131a65c617
>> Superblock backups stored on blocks:
>>      32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
>>      4096000, 7962624, 11239424
>>
>> Allocating group tables: done
>> Writing inode tables: done
>> Writing superblocks and filesystem accounting information: done
>>
>> ubuntu-gnome at ubuntu-gnome:~$
>> ----------------------------------------------------------------------------
>> What shows in syslog, with a new Call Trace every 2 minutes:
>>
>> Jul 18 20:50:25 ubuntu-gnome kernel: [  786.745662]  sda: sda1
>> Jul 18 20:50:25 ubuntu-gnome kernel: [  787.279540]  sda: sda1
>> Jul 18 20:50:31 ubuntu-gnome kernel: [  793.247853]  sda: sda1
>> Jul 18 20:50:34 ubuntu-gnome AptDaemon: INFO: Quitting due to inactivity
>> Jul 18 20:50:34 ubuntu-gnome AptDaemon: INFO: Quitting was requested
>> Jul 18 20:50:34 ubuntu-gnome org.freedesktop.PackageKit[1039]: 20:50:34
>> AptDaemon [INFO]: Quitting due to inactivity
>> Jul 18 20:50:34 ubuntu-gnome org.freedesktop.PackageKit[1039]: 20:50:34
>> AptDaemon [INFO]: Quitting was requested
>> Jul 18 20:52:23 ubuntu-gnome systemd[1]: Starting Cleanup of Temporary
>> Directories...
>> Jul 18 20:52:23 ubuntu-gnome systemd-tmpfiles[2455]:
>> [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
>> Jul 18 20:52:23 ubuntu-gnome systemd[1]: Started Cleanup of Temporary Directories.
>> Jul 18 21:17:01 ubuntu-gnome CRON[2520]: (root) CMD (   cd / && run-parts
>> --report /etc/cron.hourly)
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168038] INFO: task
>> kworker/u16:1:2537 blocked for more than 120 seconds.
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168043]       Not tainted
>> 4.4.0-21-generic #37-Ubuntu
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168045] "echo 0 >
>> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168047] kworker/u16:1 D
>> ffff88010645fa98     0  2537      2 0x00000000
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168056] Workqueue:
>> events_freezable_power_ disk_events_workfn
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168059] ffff88010645fa98
>> ffff88010645fa70 ffff88010bd03300 ffff8800d85b6600
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168062] ffff880106460000
>> ffff880117c56d00 7fffffffffffffff ffff880112b273d0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168065] ffff880112b27360
>> ffff88010645fab0 ffffffff818203f5 0000000000000000
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168068] Call Trace:
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168074] [<ffffffff818203f5>]
>> schedule+0x35/0x80
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168078] [<ffffffff81823515>]
>> schedule_timeout+0x1b5/0x270
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168082] [<ffffffff810b23ec>] ?
>> __enqueue_entity+0x6c/0x70
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168085] [<ffffffff810b7fd2>] ?
>> enqueue_entity+0x3a2/0xc70
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168088] [<ffffffff813fdfe5>] ?
>> find_next_bit+0x15/0x20
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168091] [<ffffffff810b32bd>] ?
>> select_idle_sibling+0xbd/0x120
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168094] [<ffffffff8181f944>]
>> io_schedule_timeout+0xa4/0x110
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168097] [<ffffffff813b91b1>]
>> get_request+0x411/0x790
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168101] [<ffffffff810c3a10>] ?
>> wake_atomic_t_function+0x60/0x60
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168104] [<ffffffff813b95bb>]
>> blk_get_request+0x8b/0xf0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168107] [<ffffffff815ad1bd>]
>> scsi_execute+0x3d/0x1d0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168110] [<ffffffff815aeefe>]
>> scsi_execute_req_flags+0x8e/0xf0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168113] [<ffffffff815af601>]
>> scsi_test_unit_ready+0x91/0x150
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168117] [<ffffffff815bd552>]
>> sd_check_events+0x132/0x190
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168120] [<ffffffff813cad60>]
>> disk_check_events+0x60/0x150
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168123] [<ffffffff813cae66>]
>> disk_events_workfn+0x16/0x20
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168126] [<ffffffff81099ff2>]
>> process_one_work+0x162/0x480
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168129] [<ffffffff8109a35b>]
>> worker_thread+0x4b/0x4c0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168131] [<ffffffff8109a310>] ?
>> process_one_work+0x480/0x480
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168134] [<ffffffff8109a310>] ?
>> process_one_work+0x480/0x480
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168137] [<ffffffff810a0528>]
>> kthread+0xd8/0xf0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168140] [<ffffffff810a0450>] ?
>> kthread_create_on_node+0x1e0/0x1e0
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168143] [<ffffffff8182488f>]
>> ret_from_fork+0x3f/0x70
>> Jul 18 21:37:18 ubuntu-gnome kernel: [ 3600.168146] [<ffffffff810a0450>] ?
>> kthread_create_on_node+0x1e0/0x1e0
>> Jul 18 21:37:59 ubuntu-gnome systemd[1]: Started CUPS Scheduler.
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168026] INFO: task kworker/u16:0:6
>> blocked for more than 120 seconds.
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168032]       Not tainted
>> 4.4.0-21-generic #37-Ubuntu
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168033] "echo 0 >
>> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168035] kworker/u16:0 D
>> ffff88011280b638     0     6      2 0x00000000
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168044] Workqueue: writeback
>> wb_workfn (flush-8:0)
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168047] ffff88011280b638
>> ffff880112b27470 ffff8800d93aa640 ffff880112fb3fc0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168051] ffff88011280c000
>> ffff880117c16d00 7fffffffffffffff ffff880112b273b8
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168054] ffff880112b27360
>> ffff88011280b650 ffffffff818203f5 0000000000000000
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168057] Call Trace:
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168063] [<ffffffff818203f5>]
>> schedule+0x35/0x80
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168066] [<ffffffff81823515>]
>> schedule_timeout+0x1b5/0x270
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168070] [<ffffffff813b5793>] ?
>> queue_unplugged+0xa3/0xb0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168073] [<ffffffff8181f944>]
>> io_schedule_timeout+0xa4/0x110
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168076] [<ffffffff813b91b1>]
>> get_request+0x411/0x790
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168080] [<ffffffff810c3a10>] ?
>> wake_atomic_t_function+0x60/0x60
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168084] [<ffffffff813bb895>]
>> blk_queue_bio+0x125/0x3e0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168086] [<ffffffff813b9c62>]
>> generic_make_request+0xf2/0x1d0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168089] [<ffffffff813b9db6>]
>> submit_bio+0x76/0x170
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168092] [<ffffffff81244b0f>]
>> submit_bh_wbc+0x12f/0x160
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168095] [<ffffffff81246ae5>]
>> __block_write_full_page.constprop.38+0x115/0x3a0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168098] [<ffffffff812470d0>] ?
>> I_BDEV+0x20/0x20
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168100] [<ffffffff812470d0>] ?
>> I_BDEV+0x20/0x20
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168103] [<ffffffff81246eb5>]
>> block_write_full_page+0x145/0x170
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168106] [<ffffffff81247ca8>]
>> blkdev_writepage+0x18/0x20
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168109] [<ffffffff81198513>]
>> __writepage+0x13/0x30
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168112] [<ffffffff8119900e>]
>> write_cache_pages+0x1ee/0x510
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168115] [<ffffffff81198500>] ?
>> wb_position_ratio+0x1f0/0x1f0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168118] [<ffffffff81199381>]
>> generic_writepages+0x51/0x80
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168121] [<ffffffff810b7fd2>] ?
>> enqueue_entity+0x3a2/0xc70
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168124] [<ffffffff8119b7fe>]
>> do_writepages+0x1e/0x30
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168127] [<ffffffff8123b055>]
>> __writeback_single_inode+0x45/0x330
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168129] [<ffffffff8123b852>]
>> writeback_sb_inodes+0x262/0x590
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168133] [<ffffffff8123bc0c>]
>> __writeback_inodes_wb+0x8c/0xc0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168135] [<ffffffff8123bf63>]
>> wb_writeback+0x253/0x310
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168138] [<ffffffff8123c7dd>]
>> wb_workfn+0x24d/0x400
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168142] [<ffffffff81099ff2>]
>> process_one_work+0x162/0x480
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168145] [<ffffffff8109a35b>]
>> worker_thread+0x4b/0x4c0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168148] [<ffffffff8109a310>] ?
>> process_one_work+0x480/0x480
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168151] [<ffffffff810a0528>]
>> kthread+0xd8/0xf0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168153] [<ffffffff810a0450>] ?
>> kthread_create_on_node+0x1e0/0x1e0
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168157] [<ffffffff8182488f>]
>> ret_from_fork+0x3f/0x70
>> Jul 18 21:39:18 ubuntu-gnome kernel: [ 3720.168159] [<ffffffff810a0450>] ?
>> kthread_create_on_node+0x1e0/0x1e0
>> Jul 18 21:40:01 ubuntu-gnome org.gnome.evolution.dataserver.Sources5[1422]: **
>> (evolution-source-registry:1815): WARNING **: secret_service_search_sync: must
>> specify at least one attribute to match
>> ...
>>
>> Any insight???
>>
>> Thanks,
>> Tom
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