usb problem on 3850 switch after Upgrade IOS

[j.zangeneh]

Hello,

I have a Cisco 3850 switch. After upgrading its IOS from version 03.07.05E to 16.12.13, the device no longer recognizes the usbflash:

Could you please advise on how to resolve this issue?

[Mark Elsen]

  - @j.zangeneh  Execute the command dir , from CLI (enable/privileged mode) ; look or similar name and or check for a possible name  change,

  M.

[j.zangeneh]

hi 
SWITCH#dir ?
/all List all files
/recursive List files recursively
all-filesystems List files on all filesystems
cns: Directory or file name
crashinfo-1: Directory or file name
crashinfo-2: Directory or file name
crashinfo: Directory or file name
flash-1: Directory or file name
flash-2: Directory or file name
flash: Directory or file name
null: Directory or file name
nvram: Directory or file name
revrcsf: Directory or file name
stby-crashinfo: Directory or file name
stby-flash: Directory or file name
stby-nvram: Directory or file name
stby-rcsf: Directory or file name
system: Directory or file name
tar: Directory or file name
tmpsys: Directory or file name
webui: Directory or file name
| Output modifiers
<cr> <cr>

[Leo Laohoo]

Eject the USB flash drive from the switch, wait for 5 seconds and plug it back in. 

Post the complete output to the command "sh log".  If there is anything wrong with the USB flash drive, it will show up in the switch logs.

[Mark Elsen]

  - @j.zangeneh     The usbflash: may only be seen if an usb is inserted behavior change, check output from
                              show usb-devices summary  (with an usb inserted)
                              Pay attention to USB formatting , Use FAT16 (aka FAT), not FAT32 or NTFS
                              The USB must be MBR-partitioned, not GPT.
                              Limit partition size to ≤4GB, even if the stick is larger.
                              Not all USB drives work with Cisco devices.  Try using another USB from a different vendor

           And check logs when inserting an USB , despite the change in version, these topics could be 'stressed' by the upgrade                     and or become more relevant (e.g.)

  M.

[balaji.bandi]

what kind of flash drive is this ? we have seen some of the old USB drive not able to recognize in when you upgrade IOS XE 16 and above. 

as @Leo Laohoo  mentioned, removed and reseat and check the Logs.

[j.zangeneh]

thanks
When i got  DIR in  switch in  output not show usbflash: while it used to show befor upgrade 

[j.zangeneh]

Sep 22 10:29:14: %IOSD_INFRA-6-IFS_DEVICE_OIR: Device usbflash0 removed

Sep 22 10:29:26: %IOSD_INFRA-6-IFS_DEVICE_OIR: Device usbflash0 removed
Sep 22 10:29:27: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT4-fs (sdb1): unable to read superblock
Sep 22 10:29:28: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT4-fs (sdb1): unable to read superblock

Sep 22 10:29:30: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT2-fs (sdb1): error: unable to read superblock
Sep 22 10:29:37: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: SQUASHFS error: squashfs_read_data failed to read block 0x0
Sep 22 10:29:37: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: squashfs: SQUASHFS error: unable to read squashfs_super_block

[Mark Elsen]

  - @j.zangeneh           >....kernel: EXT4-fs (sdb1): unable to read superblock
                                  The USB drive is corrupt, format it again or use another one ,

  M.

[Leo Laohoo]

---

@j.zangeneh wrote:

Sep 22 10:29:27: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT4-fs (sdb1): unable to read superblock
Sep 22 10:29:28: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT4-fs (sdb1): unable to read superblock
Sep 22 10:29:30: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT2-fs (sdb1): error: unable to read superblock
Sep 22 10:29:37: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: SQUASHFS error: squashfs_read_data failed to read block 0x0
Sep 22 10:29:37: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: squashfs: SQUASHFS error: unable to read squashfs_super_block

---

Do these kernel errors appear if there is no USB flash drive?

[j.zangeneh]

When I connect the flash to the switch, this log appears on the switch.”

[Leo Laohoo]

Ok, so the USB flash drive is not recognized by the switch.  Find another model or variety.  

[balaji.bandi]

Sep 22 10:29:30: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: EXT2-fs (sdb1): error: unable to read superblock
Sep 22 10:29:37: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: SQUASHFS error: squashfs_read_data failed to read block 0x0
Sep 22 10:29:37: %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: squashfs: SQUASHFS error: unable to read squashfs_super_block

this show some error, try format and test it , or easy get another one use it.

[j.zangeneh]

show usb-devices summary

USB Device: EHCI Host Controller
Bus: 01 Port: 00 Cnt: 00 Speed: 480
Vendor: 1d6b ProdID: 0002 Rev: 4.09
Serial Number: 16f0000000000.ehci

USB Device: ADATA USB Flash Drive
Bus: 01 Port: 00 Cnt: 01 Speed: 480
Vendor: 125f ProdID: dc1a Rev: 11.00
Serial Number: 23C1419500170034

USB Device: Generic Platform OHCI controller
Bus: 02 Port: 00 Cnt: 00 Speed: 12
Vendor: 1d6b ProdID: 0001 Rev: 4.09
Serial Number: 16f0000000400.ohci