My Cloud OS5 Firmware 5.27.157 Problems

Many users have reported various unusual problems since updating to My Cloud OS5 firmware version 5.27.157.

  • No configured RAID Volumes
  • File Access Issues
  • Missing Files
  • Network Dropouts

The missing RAID volumes problem can generally be solved by recreating a missing /dev/md1 device, restarting the RAID array to verify that it’s ok, then rebooting one or more times until it sticks.

RAID 1:

  • mknod /dev/md1 b 9 1;
  • mdadm --assemble --run /dev/md1 /dev/sda2 /dev/sdb2;

RAID 5:

  • mknod /dev/md1 b 9 1;
  • mdadm --assemble --run /dev/md1 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2;

At first, rebooting appeared to have been incidental, but further research suggests that it’s actually an important clue, and that the actual source of the problem may be the Linux kernel itself. This would also explain many of the strange problems users have reported.

My Cloud OS5 has always had an outdated Linux kernel (currently 4.14.22, latest 4.14.329), which didn’t seem to cause any major problems. However, when WD updated the base distribution packages from Debian 10 (Buster) to Debian 11 (Bullseye), it may have simply been a bridge too far.

  • 4.14.xxx - My Cloud OS5 Kernel Branch
  • 4.19.xxx - Debian 10 Kernel Branch
  • 5.10.xxx - Debian 11 Kernel Branch

The Linux kernel uses a process called udev to create all devices under /dev based on any hardware that’s detected. After updating to My Cloud OS5 firmware version 5.27.157, it occasionally fails to properly create the required /dev/md1 RAID device, which then starts a chain reaction of failures.

The solution appears to be simple, WD needs to update the Linux kernel ASAP.

My Cloud OS5 Release Notes

2 Likes

Not to mention the RSYNC problem as well!
Thanks for the detailed report

1 Like

I’m not very skilled on Linux…so far I downgraded to previous firmware and reported the issue to WD which I guess must be aware of all mess they’ve created.

1 Like

Having problems Disk1 replaced showed degraded.
Disk2 good Ex2Ultra trying to rebuild new disk1
On Raid1.
EX2 Ultra goes thru rebuild then starts rebuild again.

Should I do the following & how do you send it.
Step by step.

Thank you
In advance

RAID 1:

  • mknod /dev/md1 b 9 1;
  • mdadm --assemble --run /dev/md1 /dev/sda2 /dev/sdb2;
1 Like

New Drive replacement for Bad drive

root@MyCloudEX2Ultra ~ # smartctl -a /dev/sda;

smartctl 7.2 2020-12-30 r5155 [armv7l-linux-4.14.22-armada-18.09.3] (local build )

Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===

Model Family: Western Digital Red (SMR)

Device Model: WDC WD60EFAX-68JH4N1

Serial Number: WD-WXG2D53KA02H

LU WWN Device Id: 5 0014ee 2c0856aa2

Firmware Version: 83.00A83

User Capacity: 6,001,175,126,016 bytes [6.00 TB]

Sector Sizes: 512 bytes logical, 4096 bytes physical

Rotation Rate: 5400 rpm

Form Factor: 3.5 inches

TRIM Command: Available, deterministic, zeroed

Device is: In smartctl database [for details use: -P show]

ATA Version is: ACS-3 T13/2161-D revision 5

SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)

Local Time is: Wed Nov 15 15:14:02 2023 EST

SMART support is: Available - device has SMART capability.

SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

General SMART Values:

Offline data collection status: (0x00) Offline data collection activity

was never started.

Auto Offline Data Collection: Disabled.

Self-test execution status: ( 0) The previous self-test routine completed

without error or no self-test has ever

been run.

Total time to complete Offline

data collection: (32084) seconds.

Offline data collection

capabilities: (0x7b) SMART execute Offline immediate.

Auto Offline data collection on/off supp ort.

Suspend Offline collection upon new

command.

Offline surface scan supported.

Self-test supported.

Conveyance Self-test supported.

Selective Self-test supported.

SMART capabilities: (0x0003) Saves SMART data before entering

power-saving mode.

Supports SMART auto save timer.

Error logging capability: (0x01) Error logging supported.

General Purpose Logging supported.

Short self-test routine

recommended polling time: ( 2) minutes.

Extended self-test routine

recommended polling time: ( 739) minutes.

Conveyance self-test routine

recommended polling time: ( 2) minutes.

SCT capabilities: (0x3039) SCT Status supported.

SCT Error Recovery Control supported.

SCT Feature Control supported.

SCT Data Table supported.

SMART Attributes Data Structure revision number: 16

Vendor Specific SMART Attributes with Thresholds:

ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_ FAILED RAW_VALUE

1 Raw_Read_Error_Rate 0x002f 100 253 051 Pre-fail Always - 0

3 Spin_Up_Time 0x0027 230 230 021 Pre-fail Always - 3500

4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 7

5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0

7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0

9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 44

10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0

11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0

12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 6

192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 4

193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 2

194 Temperature_Celsius 0x0022 100 100 000 Old_age Always - 50

196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0

197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0

198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0

199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0

200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0

SMART Error Log Version: 1

No Errors Logged

SMART Self-test log structure revision number 1

Num Test_Description Status Remaining LifeTime(hours) LBA _of_first_error

1 Short offline Completed without error 00% 39 -

2 Short offline Completed without error 00% 26 -

3 Short offline Completed without error 00% 14 -

SMART Selective self-test log data structure revision number 1

SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS

1 0 0 Not_testing

2 0 0 Not_testing

3 0 0 Not_testing

4 0 0 Not_testing

5 0 0 Not_testing

Selective self-test flags (0x0):

After scanning selected spans, do NOT read-scan remainder of disk.

If Selective self-test is pending on power-up, resume after 0 minute delay.

Old second drive trying to rebuilding drive1 raid1

root@MyCloudEX2Ultra ~ # smartctl -a /dev/sdb;

smartctl 7.2 2020-12-30 r5155 [armv7l-linux-4.14.22-armada-18.09.3] (local build)

Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===

Model Family: Western Digital Red

Device Model: WDC WD60EFRX-68L0BN1

Serial Number: WD-WX31D47CED0N

LU WWN Device Id: 5 0014ee 264252099

Firmware Version: 82.00A82

User Capacity: 6,001,175,126,016 bytes [6.00 TB]

Sector Sizes: 512 bytes logical, 4096 bytes physical

Rotation Rate: 5700 rpm

Device is: In smartctl database [for details use: -P show]

ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b

SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)

Local Time is: Wed Nov 15 14:34:17 2023 EST

SMART support is: Available - device has SMART capability.

SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

General SMART Values:

Offline data collection status: (0x00) Offline data collection activity

was never started.

Auto Offline Data Collection: Disabled.

Self-test execution status: ( 17) The self-test routine was aborted by

the host.

Total time to complete Offline

data collection: ( 2384) seconds.

Offline data collection

capabilities: (0x7b) SMART execute Offline immediate.

Auto Offline data collection on/off support.

Suspend Offline collection upon new

command.

Offline surface scan supported.

Self-test supported.

Conveyance Self-test supported.

Selective Self-test supported.

SMART capabilities: (0x0003) Saves SMART data before entering

power-saving mode.

Supports SMART auto save timer.

Error logging capability: (0x01) Error logging supported.

General Purpose Logging supported.

Short self-test routine

recommended polling time: ( 2) minutes.

Extended self-test routine

recommended polling time: ( 678) minutes.

Conveyance self-test routine

recommended polling time: ( 5) minutes.

SCT capabilities: (0x303d) SCT Status supported.

SCT Error Recovery Control supported.

SCT Feature Control supported.

SCT Data Table supported.

SMART Attributes Data Structure revision number: 16

Vendor Specific SMART Attributes with Thresholds:

ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE

1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0

3 Spin_Up_Time 0x0027 200 195 021 Pre-fail Always - 8975

4 Start_Stop_Count 0x0032 047 047 000 Old_age Always - 53917

5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0

7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0

9 Power_On_Hours 0x0032 051 051 000 Old_age Always - 36271

10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0

11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0

12 Power_Cycle_Count 0x0032 098 098 000 Old_age Always - 2005

192 Power-Off_Retract_Count 0x0032 198 198 000 Old_age Always - 1981

193 Load_Cycle_Count 0x0032 183 183 000 Old_age Always - 52019

194 Temperature_Celsius 0x0022 100 097 000 Old_age Always - 52

196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0

197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 5

198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0

199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0

200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 4

SMART Error Log Version: 1

No Errors Logged

SMART Self-test log structure revision number 1

Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error

1 Short offline Aborted by host 10% 36268 -

2 Short offline Aborted by host 10% 36243 -

3 Extended offline Aborted by host 50% 36228 -

4 Short offline Completed without error 00% 36211 -

5 Short offline Completed without error 00% 36207 -

6 Extended offline Completed: read failure 10% 36205 3076528808

7 Short offline Completed without error 00% 36186 -

8 Short offline Completed without error 00% 36169 -

9 Short offline Completed without error 00% 36169 -

#10 Short offline Aborted by host 90% 31922 -

#11 Short offline Completed without error 00% 30508 -

#12 Short offline Aborted by host 50% 30420 -

#13 Short offline Completed without error 00% 27009 -

#14 Extended offline Aborted by host 90% 27009 -

#15 Short offline Completed without error 00% 26421 -

#16 Short offline Completed without error 00% 26318 -

#17 Short offline Completed without error 00% 25419 -

#18 Extended offline Completed without error 00% 25411 -

#19 Extended offline Aborted by host 90% 25399 -

#20 Short offline Completed without error 00% 25271 -

#21 Short offline Completed without error 00% 24112 -

SMART Selective self-test log data structure revision number 1

SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS

1 0 0 Not_testing

2 0 0 Not_testing

3 0 0 Not_testing

4 0 0 Not_testing

5 0 0 Not_testing

Selective self-test flags (0x0):

After scanning selected spans, do NOT read-scan remainder of disk.

If Selective self-test is pending on power-up, resume after 0 minute delay.

carlos.demelo@outlook.com

1 Like

Uh… TLDR… Don’t update to this firmware version?

it’s stupid because many of the WD NAS boxes don’t have a power button.

Once you shut these down; you need to cycle the plug power to get them to boot.

The bad thing about this is that if you get a power dip (and don’t have a UPS); the unit will crash and immediately reboot. There should be a button and an option for the unit to NOT automatically reboot upon restoration of power.

Of course; it is appropriate to have a UPS for the unit: But in my case; I generally have the units online for only a few days a month and I have good power reliability.

I would love to test the app, if it’s not too late.
What can I do?

Great job, man!

Come on!. You’ve done an impressive job here helping us “tuning” our old devices!. Of course not everyone appreciate it, but it’s part of this forum as well.

I know this thread is older and for an older firmware version than I have, but I’m getting similar symptoms after the update to My Cloud OS5 Firmware 5.29.102 (I also tried to reinstall 5.28.105). I’m seeing the “No configured RAID Volumes” message and can’t access any of my data on the drives. I’m a novice re the function of this NAS, although somewhat knowledgeable about tech in general. Can someone please explain the simple fix the OP suggested, and also does anyone know if I “Set up RAID Mode” (it’s no longer setup) will it delete the data on the drives? Thx.