Archive for category: Ubuntu

[Ubuntu] Check harddisk health with smartctl, HDD S.M.A.R.T test

24 Mar
March 24, 2020

1. Install

sudo apt-get install smartmontools

2. Verify HDD support S.M.A.R.T

sudo /sbin/sudo smartctl -i /dev/sde
smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.3.10-1-pve] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Green
Device Model:     WDC WD20EZRX-00D8PB0
Serial Number:    WD-WMC4M0DF2257
LU WWN Device Id: 5 0014ee 6afbfdb12
Firmware Version: 80.00A80
User Capacity:    2,000,397,852,160 bytes [2.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-2 (minor revision not indicated)
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Tue Mar 24 17:10:57 2020 +07
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

3. Test

sudo /sbin/smartctl -t <short|long|conveyance|select> -C /dev/sde
sudo /sbin/smartctl -t long /dev/sde
smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.3.10-1-pve] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Extended self-test routine immediately in off-line mode".
Drive command "Execute SMART Extended self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 266 minutes for test to complete.
Test will complete after Tue Mar 24 21:27:39 2020 +07
Use smartctl -X to abort test.

4. Verify result

sudo /sbin/smartctl -a /dev/sde
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%      7757         -

[Proxmox] Manage zpool degrade harddisk and clear degrade status

19 Jan
January 19, 2020
  1. Find degrade hard-disk
root@user-pve:/home/user# /usr/sbin/zpool status -v
  pool: user-storage
 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://zfsonlinux.org/msg/ZFS-8000-9P
  scan: scrub repaired 280K in 0 days 04:33:34 with 0 errors on Sun Jan 12 04:57:36 2020
config:

        NAME          STATE     READ WRITE CKSUM
        user-storage  DEGRADED     0     0     0
          raidz1-0    DEGRADED     0     0     0
            sda       ONLINE       0     0     0
            sdb       ONLINE       0     0     0
            sdc       ONLINE       0     0     0
            sdd       ONLINE       0     0     0
            sde       DEGRADED     0     0    74  too many errors

errors: No known data errors
root@user-pve:/home/user#
  1. Check hard-disk status
In this case all hard-disk health seem fine. So the degrade status seem false positive.
  1. Reset degrade status
root@user-pve:/home/user# /usr/sbin/zpool clear user-storage sde
root@user-pve:/home/user# /usr/sbin/zpool status -v
  pool: user-storage
 state: ONLINE
  scan: scrub in progress since Sun Jan 19 19:17:39 2020
        10.7G scanned at 1.53G/s, 1.32M issued at 193K/s, 877G total
        0B repaired, 0.00% done, no estimated completion time
config:

        NAME          STATE     READ WRITE CKSUM
        user-storage  ONLINE       0     0     0
          raidz1-0    ONLINE       0     0     0
            sda       ONLINE       0     0     0
            sdb       ONLINE       0     0     0
            sdc       ONLINE       0     0     0
            sdd       ONLINE       0     0     0
            sde       ONLINE       0     0     0

errors: No known data errors
root@user-pve:/home/user# apt update
  1. Verify status in proxmox

[Fixed] Windows can’t access linux samba share.

08 Nov
November 8, 2019

Had to comment away the following in the config file:

user@ubuntu:~$ sudo vim /etc/samba/smb.conf

Comment out “map to guest = bad user” line.

# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
#   map to guest = bad user

Restart samba service

user@ubuntu:~$ sudo /etc/init.d/smbd restart

Done.

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