zfs pool degradation but HD appears OK?

Status
Not open for further replies.
B

Blasm12

Cadet
Joined
Dec 11, 2014
Messages
7
Several days ago, noticed my freenas data was degradated.

So, after running:
zpool status (" gptid/8d59bd77-cbf2-11e4-afcf-0cc47a004dac DEGRADED"), then
glabel status ("gptid/8d59bd77-cbf2-11e4-afcf-0cc47a004dac N/A ada3p2"), then smartcl (below).... It appears to me the drive is ok, but the data cannot be resilverd to bring the drive back in sync?

I ran the extended SMART test on the drive this morning.

the steps illustrated (ID drive, SMART printout) in text document attached.

Appreciate any help.
I believe the drive was disconnected for several days (bad hot swap bay power)... and is unable to recover?

Thanks again
 

Attachments

  • degradation.txt
    10.7 KB · Views: 279
R

Robert Trevellyan

Pony Wrangler
Joined
May 16, 2014
Messages
3,778
It's possible for a drive to go bad without any SMART failures. However, if it was just a case of the drive losing power, you could follow the directions in the documentation for replacing a failed drive, but instead of installing a new drive, wipe the one you have and then reuse it. You might even be able to do an in-place replacement without wiping it. Your pool is safe for now because you were smart enough to go with a RAIDZ2 vdev layout.
 
B

Blasm12

Cadet
Joined
Dec 11, 2014
Messages
7
Can I simply "wipe" the drive from the FreeNAS GUI (view disks screen)? Then it will repopulate the drive?

-OR-

I have an extra (same model HD/size) drive... Can I shut down the system.. replace drive.. reboot, then it will repopulate?

Thanks Again
 
B

Blasm12

Cadet
Joined
Dec 11, 2014
Messages
7
heres code posted again



Code:
login as: root
root@192.168.1.95's password:
Last login: Sat Jul 11 09:48:15 2015 from 192.168.1.90
FreeBSD 9.3-RELEASE-p10 (FREENAS.amd64) #0 r275790+4663c83: Sat Mar  7 08:41:07                                                                                              PST 2015

        FreeNAS (c) 2009-2015, The FreeNAS Development Team
        All rights reserved.
        FreeNAS is released under the modified BSD license.

        For more information, documentation, help or support, go here:
        http://freenas.org
Welcome to FreeNAS
[root@freenas] ~# zpool status
  pool: NASVOL1
state: DEGRADED
status: One or more devices has experienced an unrecoverable error.  An
        attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
        using 'zpool clear' or replace the device with 'zpool replace'.
   see: http://illumos.org/msg/ZFS-8000-9P
  scan: scrub repaired 127G in 16h20m with 0 errors on Thu Jul  9 14:47:22 2015
config:

        NAME                                            STATE     READ WRITE CKS                                                                                             UM
        NASVOL1                                         DEGRADED     0     0                                                                                                  0
          raidz2-0                                      DEGRADED     0     0                                                                                                  0
            gptid/8c4970e5-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0                                                                                                  0
            gptid/8ca23563-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0                                                                                                  0
            gptid/8cfdcbf5-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0                                                                                                  0
            gptid/8d59bd77-cbf2-11e4-afcf-0cc47a004dac  DEGRADED     0     0 4.1                                                                                             8M  too many errors
            gptid/8daadbe3-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0                                                                                                  0
            gptid/8e061899-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0                                                                                                  0

errors: No known data errors

  pool: freenas-boot
state: ONLINE
  scan: scrub repaired 0 in 0h0m with 0 errors on Sat Jul 11 03:46:02 2015
config:

        NAME        STATE     READ WRITE CKSUM
        freenas-boot  ONLINE       0     0     0
          da0p2     ONLINE       0     0     0

errors: No known data errors
[root@freenas] ~# glabel status
                                      Name  Status  Components
gptid/72b176b8-c614-11e4-8d1e-0cc47a004dac     N/A  da0p1
gptid/8c4970e5-cbf2-11e4-afcf-0cc47a004dac     N/A  ada0p2
gptid/8ca23563-cbf2-11e4-afcf-0cc47a004dac     N/A  ada1p2
gptid/8cfdcbf5-cbf2-11e4-afcf-0cc47a004dac     N/A  ada2p2
gptid/8d59bd77-cbf2-11e4-afcf-0cc47a004dac     N/A  ada3p2
gptid/8daadbe3-cbf2-11e4-afcf-0cc47a004dac     N/A  ada4p2
gptid/8e061899-cbf2-11e4-afcf-0cc47a004dac     N/A  ada5p2
[root@freenas] ~# smartcl -a/dev/ada3



[root@freenas] ~# smartctl -a /dev/ada3
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p10 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate NAS HDD
Device Model:     ST4000VN000-1H4168
Serial Number:    Z302C7VH
LU WWN Device Id: 5 000c50 0794776ee
Firmware Version: SC44
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5900 rpm
Form Factor:      3.5 inches
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: 3.0 Gb/s)
Local Time is:    Sat Jul 11 09:55:01 2015 EDT
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:  (0x82) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection: Enabled.
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:                (  107) 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:        (   1) minutes.
Extended self-test routine
recommended polling time:        ( 518) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x10bd) SCT Status supported.
                                        SCT Error Recovery Control supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   119   099   006    Pre-fail  Always       -       229554504
  3 Spin_Up_Time            0x0003   093   093   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       21
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   070   060   030    Pre-fail  Always       -       12416117
  9 Power_On_Hours          0x0032   099   099   000    Old_age   Always       -       1283
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       21
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   069   066   045    Old_age   Always       -       31 (Min/Max 24/34)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       14
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       21
194 Temperature_Celsius     0x0022   031   040   000    Old_age   Always       -       31 (0 20 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       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  Extended offline    Completed without error       00%      1281         -
# 2  Extended offline    Completed without error       00%      1248         -
# 3  Short offline       Interrupted (host reset)      00%      1128         -
# 4  Short offline       Completed without error       00%      1127         -
# 5  Short offline       Completed without error       00%      1126         -
# 6  Short offline       Completed without error       00%      1125         -
# 7  Short offline       Completed without error       00%      1124         -
# 8  Short offline       Completed without error       00%      1123         -
# 9  Short offline       Completed without error       00%      1122         -
#10  Short offline       Completed without error       00%      1121         -
#11  Short offline       Completed without error       00%      1120         -
#12  Short offline       Completed without error       00%      1119         -
#13  Short offline       Completed without error       00%      1118         -
#14  Short offline       Completed without error       00%      1117         -
#15  Short offline       Completed without error       00%      1116         -
#16  Short offline       Completed without error       00%      1115         -
#17  Short offline       Completed without error       00%      1114         -
#18  Short offline       Completed without error       00%      1113         -
#19  Short offline       Completed without error       00%      1112         -
#20  Short offline       Completed without error       00%      1111         -
#21  Short offline       Completed without error       00%      1110         -

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.

[root@freenas] ~#

to avoid opening txt file.
 
R

Robert Trevellyan

Pony Wrangler
Joined
May 16, 2014
Messages
3,778
Blasm12 said:
Can I simply "wipe" the drive from the FreeNAS GUI (view disks screen)? Then it will repopulate the drive?

-OR-

I have an extra (same model HD/size) drive... Can I shut down the system.. replace drive.. reboot, then it will repopulate?
Click to expand...
The first option would probably work. I like the 2nd option, because you can then take your time running other tests on the replaced drive, and put it away as a spare if it seems OK.

By the way, hourly short SMART tests seems like overkill to me. Daily is more than sufficient in my opinion.
 
B

Blasm12

Cadet
Joined
Dec 11, 2014
Messages
7
thank-you.
decided to replace the drive with machine off.
After reboot, CLI "zpool status" shows new drive (below), but GUI wont give me "replace" tab when I view "storage>volume>view disks"....
GUI shows ada3 with new serial number.
I guess I'm not sure how to get it back in the pool if GUI doesnt give me "replace" tab?

(and thanks for the SMART test advice!)

Code:
login as: root
root@192.168.1.95's password:
Last login: Sun Jul 12 07:14:34 2015 from 192.168.1.90
FreeBSD 9.3-RELEASE-p10 (FREENAS.amd64) #0 r275790+4663c83: Sat Mar  7 08:41:07                                                                  PST 2015

        FreeNAS (c) 2009-2015, The FreeNAS Development Team
        All rights reserved.
        FreeNAS is released under the modified BSD license.

        For more information, documentation, help or support, go here:
        http://freenas.org
Welcome to FreeNAS
[root@freenas] ~# zpool status
  pool: NASVOL1
state: DEGRADED
status: One or more devices could not be opened.  Sufficient replicas exist for
        the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
   see: http://illumos.org/msg/ZFS-8000-2Q
  scan: scrub repaired 0 in 13h5m with 0 errors on Sun Jul 12 02:53:47 2015
config:

        NAME                                            STATE     READ WRITE CKSUM
        NASVOL1                                         DEGRADED     0     0     0
          raidz2-0                                      DEGRADED     0     0     0
            gptid/8c4970e5-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0     0
            gptid/8ca23563-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0     0
            gptid/8cfdcbf5-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0     0
            16193153246620218562                        UNAVAIL      0     0     0  was                                                          /dev/gptid/8d59bd77-cbf2-11e4-afcf-0cc47a004dac
            gptid/8daadbe3-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0     0
            gptid/8e061899-cbf2-11e4-afcf-0cc47a004dac  ONLINE       0     0     0

errors: No known data errors

  pool: freenas-boot
state: ONLINE
  scan: scrub repaired 0 in 0h0m with 0 errors on Sat Jul 11 03:46:02 2015
config:

        NAME        STATE     READ WRITE CKSUM
        freenas-boot  ONLINE       0     0     0
          da0p2     ONLINE       0     0     0

errors: No known data errors
[root@freenas] ~#
 
R

Robert Trevellyan

Pony Wrangler
Joined
May 16, 2014
Messages
3,778
There is a documented procedure for replacing a drive. Step 1 is to offline the 'bad' drive, which I'm guessing you didn't do. I expect you can recover by temporarily installing the old drive and then offlining it, but there's probably an easier way too. Maybe you can just offline the disk FreeNAS sees now, then do an in-place replacement.
 
B

Blasm12

Cadet
Joined
Dec 11, 2014
Messages
7
Yes, section 8.1.10 ( in 9.3 documentation: http://doc.freenas.org/9.3/freenas_storage.html). I've read it numerous times.

The problem was/is .. There was no tab to to take the degraded disk "offline" (in disk view screen at bottom) ... Which according to the documentation means it was already off line.
Then I powered off, replaced the drive w a new similar drive, reboot..... And Voila!.... The GUI ("disk view") shows the drive as part of the volume, new HD serial number for new drive visible, (highlighting the drive... Shows 2 tabs at bottom, "edit " and "wipe" ) ... But CLI shows it as above "not available".

I'm transferring the volume to a couple Green6Tb's now.... I don't like NOT having the extra parity with the drive out.

I've been considering with the idea of bumping up the storage size, ... So this may be my chance to reflash that M1015.

I'd kind of like to figure this out, but may just rebuild the server, M1015/ more storage.
Thanks for your help.
 
Status
Not open for further replies.

Important Announcement for the TrueNAS Community.

The TrueNAS Community has now been moved. This forum will now become READ-ONLY for historical purposes. Please feel free to join us on the new TrueNAS Community Forums.

Related topics on forums.truenas.com for thread: "zfs pool degradation but HD appears OK?"

Similar threads

J
  • Locked
User Error - Need help adding a disk back to an unmounted zpool
Replies
10
Views
2K
cyberjock
C
S
  • Locked
Cannot offline device: no such device in pool
Replies
5
Views
3K
cyberjock
C
Aberu
  • Locked
Can't import/mount zpool in GUI after fresh install to 9.3 following cata failure (my fault)
Replies
4
Views
3K
Orca04
O
E
  • Locked
Can't bring drive ONLINE from UNAVAIL
Replies
4
Views
1K
eqartimus
E
W
  • Locked
Unrecoverable error
Replies
14
Views
3K
jdong
J
Top