I just checked and noticed this now - new server and already disk failed? Purchased these new yesterday and already 1 failed 
I checked zpool status
root@vz-jhb-1:~# zpool status
pool: rpool
state: DEGRADED
status: One or more devices could not be used because the label is missing or
invalid. Sufficient replicas exist for the pool to continue
functioning in a degraded state.
action: Replace the device using 'zpool replace'.
see: http://zfsonlinux.org/msg/ZFS-8000-4J
scan: none requested
config:
NAME STATE READ WRITE CKSUM
rpool DEGRADED 0 0 0
raidz2-0 DEGRADED 0 0 0
4855097323164774743 UNAVAIL 0 0 0 was /dev/sda2
sdb2 ONLINE 0 0 0
sdc2 ONLINE 0 0 0
sdd2 ONLINE 0 0 0
sde2 ONLINE 0 0 0
sdf2 ONLINE 0 0 0
errors: No known data errors
Is that really a faulty disk? Because if I run smartctl I get this:
root@vz-jhb-1:~# smartctl -a /dev/sda
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-4.2.8-1-pve] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: Crucial_CT1024MX200SSD1
Serial Number: 16031184DD45
LU WWN Device Id: 5 00a075 11184dd45
Firmware Version: MU03
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-3 T13/2161-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sat Apr 16 15:57:44 2016 SAST
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: (0x84) Offline data collection activity
was suspended by an interrupting command from host.
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: ( 263) 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: ( 8) minutes.
Conveyance self-test routine
recommended polling time: ( 3) minutes.
SCT capabilities: (0x0035) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
How to correct?
I checked zpool status
root@vz-jhb-1:~# zpool status
pool: rpool
state: DEGRADED
status: One or more devices could not be used because the label is missing or
invalid. Sufficient replicas exist for the pool to continue
functioning in a degraded state.
action: Replace the device using 'zpool replace'.
see: http://zfsonlinux.org/msg/ZFS-8000-4J
scan: none requested
config:
NAME STATE READ WRITE CKSUM
rpool DEGRADED 0 0 0
raidz2-0 DEGRADED 0 0 0
4855097323164774743 UNAVAIL 0 0 0 was /dev/sda2
sdb2 ONLINE 0 0 0
sdc2 ONLINE 0 0 0
sdd2 ONLINE 0 0 0
sde2 ONLINE 0 0 0
sdf2 ONLINE 0 0 0
errors: No known data errors
Is that really a faulty disk? Because if I run smartctl I get this:
root@vz-jhb-1:~# smartctl -a /dev/sda
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-4.2.8-1-pve] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: Crucial_CT1024MX200SSD1
Serial Number: 16031184DD45
LU WWN Device Id: 5 00a075 11184dd45
Firmware Version: MU03
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-3 T13/2161-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sat Apr 16 15:57:44 2016 SAST
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: (0x84) Offline data collection activity
was suspended by an interrupting command from host.
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: ( 263) 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: ( 8) minutes.
Conveyance self-test routine
recommended polling time: ( 3) minutes.
SCT capabilities: (0x0035) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
How to correct?
