Then run it with elevated permissions: sudo iotop However, this will not show you the total writes to a drive, but it will allow you to see if apps are writing to the drive(s) a lot. How do I figure out what jbd2 is doing? thanks everyone for your help! It looks like the culprit is mongo and jbd2. Vm.swappiness = $ grep -i swap /etc/fstabĪnd have this after running for a while: Total DISK READ : 0.00 B/s | Total DISK WRITE : 147.34 K/sĪctual DISK READ: 0.00 B/s | Actual DISK WRITE: 357.38 K/s
#UBUNTU CHECK SSD DISK HEALTH FREE#
Total used free shared buff/cache available How do we go about trying to figure out why this number is so thanks for following up! Here is the response to yours comments (fyi, I killed Ubuntu swap after installing the new SSD) $ free -h The lifetime is 250TB, so 2TB being used is insane, and it doesn't make any sense. The part that has us concerned is this: Data Units Written: 4,508,008 SMART overall-health self-assessment test result: PASSEDĮrror Information (NVMe Log 0x01, max 64 entries) St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp Optional Admin Commands (0x0017): Security Format Frmw_DL Self_Test
Local Time is: Sun Nov 22 22:11:40 2020 ESTįirmware Updates (0x16): 3 Slots, no Reset required
#UBUNTU CHECK SSD DISK HEALTH PLUS#
Model Number: Samsung SSD 970 EVO Plus 2TB Smartctl 7.1 r5022 (local build)Ĭopyright (C) 2002-19, Bruce Allen, Christian Franke, = START OF INFORMATION SECTION = Here is the output from a drive that was installed less than two weeks ago: $ smartctl -a /dev/nvme0n1p1 One of our Samsung 2TB NVME SSDs recently failed, so we swapped it with a new stick and have started to pay careful attention to the SMART tests.
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