Show SSD wearout - SAS connected SSDs

[David Herselman]

Hi,

Please may I ask that disk health displays show the media wearout indicator for SAS connected SSDs? I presume the 'Disks' information is parsed via smartctl and subsequently displays N/A due to SAS connected SSDs not showing raw value data.

Herewith a snippet of the SSDs which connect via SAS where the media wearout is shown as 'percentage used endurance indicator':

[admin@kvm5a ~]# smartctl -a /dev/sda
smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.4.41-1-pve] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor:               WDC
Product:              WUSTR6464ASS200
Revision:             A925
Compliance:           SPC-5
User Capacity:        6,401,252,745,216 bytes [6.40 TB]
Logical block size:   512 bytes
Physical block size:  4096 bytes
LU is resource provisioned, LBPRZ=1
Rotation Rate:        Solid State Device
Form Factor:          2.5 inches
Logical Unit id:      0x5000cca0ad0029f0
Serial number:        V8V02TLA
Device type:          disk
Transport protocol:   SAS (SPL-3)
Local Time is:        Fri Dec 11 08:34:46 2020 SAST
SMART support is:     Available - device has SMART capability.
SMART support is:     Enabled
Temperature Warning:  Enabled

=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK

Percentage used endurance indicator: 4%
Current Drive Temperature:     32 C
Drive Trip Temperature:        70 C

Manufactured in week 07 of year 2019
Specified cycle count over device lifetime:  0
Accumulated start-stop cycles:  0
Specified load-unload count over device lifetime:  0
Accumulated load-unload cycles:  0
Grown defect list length=40 bytes [unknown number of elements]

Error counter log:
           Errors Corrected by           Total   Correction     Gigabytes    Total
               ECC          rereads/    errors   algorithm      processed    uncorrected
           fast | delayed   rewrites  corrected  invocations   [10^9 bytes]  errors
read:          0        0         0         0          0     565254.304           0
write:         0        0         0         0          0     694698.108           0

Non-medium error count:      228

SMART Self-test log
Num  Test              Status                 segment  LifeTime  LBA_first_err [SK ASC ASQ]
     Description                              number   (hours)
# 1  Background short  Completed                   -   15206                 - [-   -    -]
# 2  Background short  Completed                   -   15182                 - [-   -    -]
# 3  Background short  Completed                   -   15158                 - [-   -    -]
# 4  Background short  Completed                   -   15134                 - [-   -    -]
# 5  Background short  Completed                   -   15110                 - [-   -    -]
# 6  Background short  Completed                   -   15086                 - [-   -    -]
# 7  Background short  Completed                   -   15062                 - [-   -    -]
# 8  Background short  Completed                   -   15038                 - [-   -    -]
# 9  Background short  Completed                   -   15014                 - [-   -    -]
#10  Background short  Completed                   -   14990                 - [-   -    -]
#11  Background short  Completed                   -   14966                 - [-   -    -]
#12  Background short  Completed                   -   14942                 - [-   -    -]
#13  Background short  Completed                   -   14918                 - [-   -    -]
#14  Background short  Completed                   -   14894                 - [-   -    -]
#15  Background short  Completed                   -   14870                 - [-   -    -]
#16  Background short  Completed                   -   14846                 - [-   -    -]
#17  Background short  Completed                   -   14822                 - [-   -    -]
#18  Background short  Completed                   -   14798                 - [-   -    -]
#19  Background short  Completed                   -   14774                 - [-   -    -]
#20  Background short  Completed                   -   14750                 - [-   -    -]

Long (extended) Self-test duration: 1320 seconds [22.0 minutes]

 

[dcsapak]

yes you are right, i sent a patch: https://lists.proxmox.com/pipermail/pve-devel/2020-December/046455.html

 

[carl0s]

Hi, any chance of the patch making it into PBS ? I see the same N/A on SAS SSDs, yet smartctl shows percentage used endurance indicator.

 

[dcsapak]

pbs should already have that kind of info, at least we're parsing it correctly AFAICS. If it's not working for you, please open a bug on https://bugzilla.proxmox.com with the output of 'smartctl -A -j </dev/path/to/nvme>' in it

 

[carl0s]

OK I will do. I will have the system switched back on tomorrow. I only powered up the system to check the SSD health on some used-SSDs and turned it back off afterwards. It sounds exactly like the description though - shows N/A in PBS, shows "Percentage used endurance indicator:" in smartctl