[antergos@Antergos-ISO ~]$ uname -r
3.15.8-1-ARCH


[antergos@Antergos-ISO ~]$ lsblk -f
NAME   FSTYPE   LABEL    UUID                                 MOUNTPOINT
sda                                                           
├─sda1 ntfs     System   67C4044931224E61                     
├─sda2 ntfs     Backup   4CCA51123CC5E9C5                     
├─sda3 ext4     Linux    c4d2d074-47ac-4f34-b7cb-32214b7d55ef 
└─sda4 swap              430ce970-e6b9-4b43-b509-5c2090baa888 
sdb                                                           
└─sdb1               


[antergos@Antergos-ISO ~]$ lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 003: ID 04e8:681e Samsung Electronics Co., Ltd 


[antergos@Antergos-ISO ~]$ dmesg
[  128.889133] fuse init (API version 7.23)
[  170.756956] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
[  171.720614] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
[  172.098825]  sda: sda1 sda2 sda3 sda4
[  299.883497] usb 5-1: new full-speed USB device number 3 using ohci-pci
[  300.069017] usb-storage 5-1:1.0: USB Mass Storage device detected
[  300.069111] scsi6 : usb-storage 5-1:1.0
[  300.069181] usbcore: registered new interface driver usb-storage
[  300.069946] usbcore: registered new interface driver uas
[  301.079030] scsi 6:0:0:0: Direct-Access     Samsung  E2121L  0        USB  PQ: 0 ANSI: 0 CCS
[  301.131083] sd 6:0:0:0: [sdb] 494080 512-byte logical blocks: (252 MB/241 MiB)
[  301.137084] sd 6:0:0:0: [sdb] Write Protect is off
[  301.137098] sd 6:0:0:0: [sdb] Mode Sense: 43 00 00 00
[  301.143093] sd 6:0:0:0: [sdb] No Caching mode page found
[  301.143106] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  301.182179]  sdb: sdb1
[  301.220212] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[  332.054087] usb 5-1: reset full-speed USB device number 3 using ohci-pci
[  363.126529] usb 5-1: reset full-speed USB device number 3 using ohci-pci
[  394.165556] usb 5-1: reset full-speed USB device number 3 using ohci-pci
[  425.184547] usb 5-1: reset full-speed USB device number 3 using ohci-pci
[  456.277022] usb 5-1: reset full-speed USB device number 3 using ohci-pci
[  480.857246] INFO: task systemd-udevd:1130 blocked for more than 120 seconds.
[  480.857259]       Tainted: G           O  3.15.8-1-ARCH #1
[  480.857264] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  480.857269] systemd-udevd   D 0000000000000000     0  1130    200 0x00000006
[  480.857279]  ffff8800818439c8 0000000000000046 ffff8800848dc750 0000000000014700
[  480.857288]  ffff880081843fd8 0000000000014700 ffff8800848dc750 0000000000014700
[  480.857295]  0000000180270013 ffff88012fffac00 0000000200000002 0000000000000000
[  480.857302] Call Trace:
[  480.857320]  [<ffffffff8113fb60>] ? filemap_fdatawait+0x30/0x30
[  480.857331]  [<ffffffff8150a5a9>] schedule+0x29/0x70
[  480.857338]  [<ffffffff8150a894>] io_schedule+0x94/0xf0
[  480.857346]  [<ffffffff8113fb6e>] sleep_on_page+0xe/0x20
[  480.857353]  [<ffffffff8150ad88>] __wait_on_bit_lock+0x48/0xb0
[  480.857362]  [<ffffffff8113fcc8>] __lock_page+0x78/0x90
[  480.857370]  [<ffffffff810b1c90>] ? autoremove_wake_function+0x40/0x40
[  480.857380]  [<ffffffff81150bae>] truncate_inode_pages_range+0x43e/0x760
[  480.857390]  [<ffffffff81150ee5>] truncate_inode_pages+0x15/0x20
[  480.857397]  [<ffffffff811ee7cf>] kill_bdev+0x2f/0x40
[  480.857404]  [<ffffffff811efdf8>] __blkdev_put+0x68/0x1c0
[  480.857410]  [<ffffffff811f08dc>] blkdev_put+0x4c/0x150
[  480.857417]  [<ffffffff811f0a95>] blkdev_close+0x25/0x30
[  480.857425]  [<ffffffff811b697c>] __fput+0x9c/0x200
[  480.857433]  [<ffffffff811b6b2e>] ____fput+0xe/0x10
[  480.857441]  [<ffffffff8108a3ec>] task_work_run+0xbc/0xe0
[  480.857449]  [<ffffffff8106c3a8>] do_exit+0x398/0xb10
[  480.857456]  [<ffffffff8106dcb2>] ? current_fs_time+0x12/0x60
[  480.857463]  [<ffffffff8106cba3>] do_group_exit+0x43/0xc0
[  480.857471]  [<ffffffff8107c3a0>] get_signal_to_deliver+0x270/0x6e0
[  480.857480]  [<ffffffff81014557>] do_signal+0x57/0x6c0
[  480.857486]  [<ffffffff811ef52b>] ? blkdev_aio_read+0x4b/0x70
[  480.857495]  [<ffffffff81014c28>] do_notify_resume+0x68/0xa0
[  480.857503]  [<ffffffff815167e0>] int_signal+0x12/0x17
[  480.857510] INFO: task systemd-udevd:1136 blocked for more than 120 seconds.
[  480.857515]       Tainted: G           O  3.15.8-1-ARCH #1
[  480.857518] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  480.857522] systemd-udevd   D 0000000000000000     0  1136    200 0x00000004
[  480.857529]  ffff88007e2b3960 0000000000000082 ffff88011f859e90 0000000000014700
[  480.857536]  ffff88007e2b3fd8 0000000000014700 ffff88011f859e90 ffffffffffffffff
[  480.857542]  ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
[  480.857548] Call Trace:
[  480.857557]  [<ffffffff810a70e9>] ? update_curr+0x79/0x1b0
[  480.857565]  [<ffffffff810a3078>] ? __enqueue_entity+0x78/0x80
[  480.857572]  [<ffffffff810a903e>] ? enqueue_entity+0x24e/0xaa0
[  480.857580]  [<ffffffff8150a5a9>] schedule+0x29/0x70
[  480.857587]  [<ffffffff81509799>] schedule_timeout+0x1b9/0x240
[  480.857595]  [<ffffffff8109b55b>] ? check_preempt_curr+0x7b/0x90
[  480.857602]  [<ffffffff81097d8e>] ? ttwu_stat+0x9e/0x110
[  480.857610]  [<ffffffff8150b06f>] wait_for_common+0xcf/0x190
[  480.857618]  [<ffffffff8109e170>] ? wake_up_process+0x50/0x50
[  480.857626]  [<ffffffff8150b14d>] wait_for_completion+0x1d/0x20
[  480.857633]  [<ffffffff810855e9>] flush_work+0xe9/0x170
[  480.857640]  [<ffffffff81083510>] ? work_busy+0x80/0x80
[  480.857647]  [<ffffffff81085f9f>] __cancel_work_timer+0x8f/0x130
[  480.857655]  [<ffffffff81086073>] cancel_delayed_work_sync+0x13/0x20
[  480.857661]  [<ffffffff81278741>] disk_block_events+0x81/0x90
[  480.857684]  [<ffffffff811effc3>] __blkdev_get+0x73/0x4d0
[  480.857691]  [<ffffffff811f0470>] blkdev_get+0x50/0x3a0
[  480.857699]  [<ffffffff812069b2>] ? __break_lease+0x252/0x380
[  480.857706]  [<ffffffff811f0810>] ? blkdev_get_by_dev+0x50/0x50
[  480.857713]  [<ffffffff811f086b>] blkdev_open+0x5b/0x80
[  480.857720]  [<ffffffff811b2a42>] do_dentry_open+0x1d2/0x290
[  480.857727]  [<ffffffff811b2ea1>] finish_open+0x31/0x50
[  480.857735]  [<ffffffff811c33d2>] do_last.isra.36+0x652/0xe50
[  480.857743]  [<ffffffff811c3c97>] path_openat+0xc7/0x6e0
[  480.857751]  [<ffffffff81181459>] ? free_pages_and_swap_cache+0xb9/0xe0
[  480.857759]  [<ffffffff8116a06d>] ? tlb_finish_mmu+0x4d/0x50
[  480.857767]  [<ffffffff811c55bd>] do_filp_open+0x4d/0xc0
[  480.857775]  [<ffffffff811c023c>] ? getname_flags+0x2c/0x130
[  480.857781]  [<ffffffff811d2887>] ? __alloc_fd+0xa7/0x130
[  480.857789]  [<ffffffff811b416e>] do_sys_open+0x14e/0x250
[  480.857796]  [<ffffffff811b428e>] SyS_open+0x1e/0x20
[  480.857804]  [<ffffffff815165a9>] system_call_fastpath+0x16/0x1b
[  487.349446] usb 5-1: reset full-speed USB device number 3 using ohci-pci
[  487.506646] sd 6:0:0:0: [sdb] Unhandled error code
[  487.506659] sd 6:0:0:0: [sdb]  
[  487.506665] Result: hostbyte=0x05 driverbyte=0x00
[  487.506671] sd 6:0:0:0: [sdb] CDB: 
[  487.506675] cdb[0]=0x28: 28 00 00 00 00 80 00 00 f0 00
[  487.506692] end_request: I/O error, dev sdb, sector 128
[  487.506700] Buffer I/O error on device sdb, logical block 16
[  487.506718] Buffer I/O error on device sdb, logical block 17
[  487.506723] Buffer I/O error on device sdb, logical block 18
[  487.506728] Buffer I/O error on device sdb, logical block 19
[  487.506733] Buffer I/O error on device sdb, logical block 20
[  487.506738] Buffer I/O error on device sdb, logical block 21
[  487.506743] Buffer I/O error on device sdb, logical block 22
[  487.506747] Buffer I/O error on device sdb, logical block 23
[  487.506752] Buffer I/O error on device sdb, logical block 24
[  487.506757] Buffer I/O error on device sdb, logical block 25
[  518.335081] usb 5-1: reset full-speed USB device number 3 using ohci-pci