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Questions tagged [smart]

Self-Monitoring, Analysis and Reporting Technology

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btrfs - failing disk generated checksum errors, disk replaced, errors remain

I had a pair of 3TB disks in a btrfs raid1 array. One of these disks started failing (smartd shows bad sectors), and so I bought a pair of new 8TB drives to replace both disks in the array. I replaced ...
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SATA errors showing up in Journalctl while SMART Diagnostic ok - Motherboard issue?

After noticing abnormally long disk operations delays, I looked up journalctl and this is what I found: Feb 22 14:02:11.711182 Onan01 kernel: ata10: hard resetting link Feb 22 14:02:12.186958 Onan01 ...
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How to monitor Segate HDD health under Linux?

I'd need to monitor the health of several Seagate ST16000NM002G SAS HDDs hosted in a disk server running CentOS 7. As far as I understand, Seagate disks do not expose S.M.A.R.T. attributes due to a ...
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If a hard drive caused "bus errors", should its SMART attributes show problems?

The machine shows "ATA bus errors" occasionally, and has to be rebooted: [24028.505239] ata1.00: exception Emask 0x10 SAct 0x0 SErr 0x48d0002 action 0xe frozen [24028.505249] ata1.00: ...
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smartctl "Elements in grown defect list" vs. RAID controller "Media error count"

I am using a hardware raid50 with PERC810 controller in my server and recently encountered a metric I am not sure about. Until now, I have been using a smartctl metric "Elements in grown defect ...
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2 votes
1 answer
63 views

RAID controller detecting SSD as foreign after every reboot

My server, an R610, has been detecting my SSD as foreign after every reboot. It has a PERC 6/i RAID controller, but there's no actual RAID stuff (I just have all the drives as their own VDs). This had ...
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1 vote
1 answer
515 views

Health Tests on NVMe

On the servers I have, with HDD or SSD, I have a cron that periodically runs: /usr/sbin/smartctl --test=short/long /dev/sd1 (for each disk) While it runs, it just looks at the output of /usr/sbin/...
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  • 431
7 votes
2 answers
1k views

SMART shows unreadble sectors, btrfs scrubs are clean - which is correct?

I have a pair of disks in RAID1 formatted with btrfs. The disks go through periodic scrubbing and I get notified with the results. They've been running great for about 2-3 years with no issues. ...
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Drive failed or can be still used?

I've the following WD drive (3TB) that gave me a problem (I was unable to access any file: even an ls command on it caused a never ending wait). Here some details on the disk: Disk /dev/sda: 2.7 TiB, ...
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How can I forward smartd alerts to multiple emails?

I want to forward smartd alerts to multiple email addresses. According to smartd.conf man page, To send email to more than one user, please use the following "comma separated" form for the ...
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How do I get smartctl offline test results emailed?

I want to schedule smartctl tests like smartctl -t long /dev/sdc, and then have the test result emailed to an email address. Is there any way I can do that?
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167 views

What do Offline_Uncorrectable and Current_Pending_Sector mean in the context of SMART tests?

SMART shows there are 6 Offline_Uncorrectable sectors and 1 Current_Pending_Sector on one of my drives. What do these parameters mean? I failed to find a detailed explanation by Googling. Also, is ...
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Understanding smart atrributes for SAS drives behind raid controller

I have Dell Poweredge machines that run esxi 6.5. I need to monitor the health of the disks that are behind perc raid controller. I have installed perccli. I also want to get the smart parameters of ...
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1 vote
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254 views

Interpreting SMART Logs of Newly Installed NVMe RAID0 Crashing Everyday

An Ubuntu 20.04 system has been stable for a year until a 2nd and 3rd NVMe drive is installed on the motherboard to form a 2x1TB RAID0 array. Ever since then, there is huge amount of IO load on this ...
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-2 votes
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Does this SMART result indicate brand new drive? [closed]

Bought a Seagate Exos 7e drive from an OEM reseller (no Seagate warranty). Are these SMART results valid for a drive that is supposed to be brand new?
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How Can I Understand this Vendor-Specific SMART Attribute?

There are two contexts for this question, a general and a specific. Generally, how does one find the meaning for vendor-specific S.M.A.R.T. attributes? I have searched the web high and low but found ...
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2 votes
2 answers
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Relatively new WD Red Pro yielding ATA status: 41 (DRDY ERR), error: 40 (UNC ) on FreeBSD 12.2

I am running a TrueNAS server based on FreeBSD 12.2. I migrated the storage to 10 TB WD Red Pro. They're running for 42 days now. Out of the sudden, during a ZFS scrub, one of the disks yielded 5 ...
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S.M.A.R.T spin retry count

Monitoring the spin retry count of a 2-months-old HDD I don't fully trust (noise), I wonder: If "current" is 134, why is "worst" indicated as 100 and "threshold" as 30? ...
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9 votes
2 answers
2k views

S.M.A.R.T. lifetime hours resetting to zero

I use S.M.A.R.T. selftest to test all of my hard drives and SSDs. I run a short test daily and a long test monthly. One of my SSD is showing odd behavior in that the lifetime hours seem to reset back ...
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1 vote
1 answer
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SMART test failures on harddrive

i have probably problem on my system with SMART failures on my harddrive. There is used OS: SLES 11.2 i586. Problem is, that recently there appeared some errors in SMART print of status of my device (...
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1 vote
1 answer
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Resetting SMART on an SSD (hours powered on)

We've been bitten by a known issue on SanDisk SSDs (Dell or HPE branded) where they hard fail after a certain number of hours powered on - 32768 or 40000 depending on the specific model. Is there a ...
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1 answer
860 views

Understanding smartd

I have two servers that are set up exactly the same way (same SSD's, RAM etc.). They both have ESXI running on them. One of the boxes had a quest host that had a lot of complaints about writing to the ...
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1 vote
1 answer
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(LVM) Moving data to a different physical volume within the same logical volume

I have a logical volume called storage. It contains two ~1TB physical volumes: /dev/sdc and /dev/sdd. smartctl -a /dev/sdd informs me that /dev/sdd is failing. I can still read data off it and I have ...
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2 answers
464 views

Does this SMART report indicate a bad disk?

On a remote server, I have 2x3TB drives set in raid 0 with SLI raid card. I tried to run SMART tests to see if drives have a problem because server become unresponsive and one drive had to be put back ...
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2 votes
1 answer
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HDD spins up spuriously for no reason

I have four HDDs in my NAS. Three (Western Digital, all the same model) are put in standby mode (spin down) by hd-idle and they stay in standby until I use them. The reason I use hd-idle and not the ...
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2 votes
2 answers
2k views

HDD SMART interpretation

I need your opinion if the drive below is failing. When I run "smartctl -a /dev/sda -d megaraid,1", 2 errors are posted at the end of the output, stating "Error: WP at LBA". I don't see anything ...
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1 vote
1 answer
125 views

UDMA CRC SMART Reporting, Alternative Software/logs for Diag

* Update * As it turns out the human readable portion of SMART reporting numbers is pretty useless for the UDMA CRC errors and you just have to track the RAW value. After flushing through over a dozen ...
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1 vote
1 answer
208 views

Detect if hard drive SMART data has been reset

I want to detect if a hard drive's SMART data has been reset, e.g. by an unscrupulous vendor selling refurbished drives as new. Google shows page after page of results about techniques and tools for ...
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1 vote
1 answer
199 views

S.M.A.R.T. Attributes from OWC Mercury Rack Pro

I'm having difficulty getting SMART Attributes from drives in an OWC Mercury Rack Pro. I can successfully get all the drive info, but I get nothing past the START OF READ SMART DATA SECTION. It is ...
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1 answer
771 views

How to derive bytes written from SMART's host_write_commands?

Using either smartctl 7.0 or nvme 1.7, I get the following data from the SMART log data_units_written : 350,371,149 host_write_commands : 2,974,115,785 Via smartctl, ...
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4 votes
1 answer
4k views

Unit for Total_LBAs_Written in SMART data

I have 3 machines with disks (actually, SSDs) in RAID1, purposely with different brands in an attempt to make it improbable to loose them both simultaneously due to wear-out. They are functional. ...
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4 votes
0 answers
691 views

SMART Extended self-test routine changes duration

I purchased a new Western Digital Elements 3TB a couple of weeks ago. As usual, I did all SMART tests, then badblocks, then SMART tests again. When I first got the drive, SMART showed this: Short ...
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1 vote
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117 views

Something's wrong w Fedora Core 31 gnome-disks; drops SMART data for unknown reason, THEN doesn't show available disks at all

As discussed here, I've been working to load a great many smaller disks' data to a larger storage repository. The system in question is Fedora Core Server 31 - out just a week ago or less. Of course, ...
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1 vote
0 answers
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How to collect historical data using smartctl?

I'm trying to do some analysis on the SMART stats of disk drives. Unfortunately, I'm not collecting/storing smart stats data daily for the analysis. I will be writing some procedure to collect it from ...
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4 votes
0 answers
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SMART - Understanding Offline Data Collection

I have two Kingston A400 120GB SSD as cache in a Synology NAS, which don't seem to support automatic offline data collection. # smartctl -d sat -c /dev/sdc | grep -i "Auto Offline data collection" ...
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1 vote
1 answer
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Is there ready S.M.A.R.T monitoring toolkit for NVME disks (exporter,source,board)?

I already found node_exporter and grafana board for HDD S.M.A.R.T. Can You please get advice or url for ready exporter or other toolkit? I'm trying to wrote my own "messy" text exporter for ...
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2 votes
0 answers
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Does calling storcli on a hard disk drive induce read/write latency?

I am calling storcli /c0/eall/sall show all on some 4TB Western Digital hard disk drives to get their SMART code status. When I do this it causes significant write latency to the disks, is that ...
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6 votes
2 answers
597 views

mdadm RAID5 random read errors. Dying disk?

First the long story: I have a RAID5 with mdadm on Debian 9. The Raid has 5 Disks, each 4TB of size. 4 of them are HGST Deskstar NAS, and one that came later is a Toshiba N300 NAS. In the past days I ...
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1 vote
1 answer
1k views

Tests with smartctl vs smartd

I am looking into setting up smartmontools. I'd like to control when the tests run. I was thinking of running: /usr/sbin/smartctl --test=short /dev/sdX (every week) /usr/sbin/smartctl --test=long /...
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  • 431
1 vote
1 answer
1k views

OfflineUncorrectableSector & CurrentPendingSector emails - what should I do?

Running Centos 7: I've just done a yum update followed by a reboot on one of my servers, and when it came back up I got two emails: First: OfflineUncorrectableSector Device: /dev/sdb [SAT], 28 ...
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1 vote
3 answers
2k views

How can I change a SMART attribute value?

I have a drive which has signaled a SMART error (Current_Pending_Sector is 1) and I've run a "long offline test" against the drive which reported zero errors. This was after running a "short offline ...
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3 votes
0 answers
175 views

Is this disk about to die?

I have a WD Red 4 TB disk (WD40EFRX-68WT0N0, firmware 82.00A82) that is occasionally showing uncorrectable read errors in the SMART error log, e.g.: Error 43 [18] occurred at disk power-on lifetime: ...
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0 votes
1 answer
134 views

G-sense errors in new disks

I have a Synology DiskStation. It used to contain 3xTB drives, I now have 2xTB, 2x8TB drives. The old drives were "Seagate NAS" drives, the new ones are from the same(?) series, named "Ironwolf". The ...
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2 votes
2 answers
5k views

SMART error (CurrentPendingSector) detected on host

Smart is reporting the following error each day one one of my data centre server SSDs: This message was generated by the smartd daemon running on: host name: x DNS domain: x The following ...
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1 vote
1 answer
548 views

Current Pending Sector S.M.A.R.T

Hello I have a Linux Server mounted with BTRFS in RAID-1 and I would like that someone more expert than me could solve my doubts. I have 3 HDD of 6TB each, in one of them every so often smartd detects ...
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-3 votes
1 answer
223 views

RAID 0 - disk failure probability - need help to verifying my experience [closed]

I have HP DL380 G7, with 8x300GB disks. The disks are not HP genuine, they are OEM. I configured RAID 0 for all disks, as i need speed and i have backup plans. within 1 month: 1 Disk threw SMART ...
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1 vote
1 answer
6k views

smartctl drive Media_Wearout_Indicator values outside normal bounds

I was attempting to put some monitoring in place to track the health of my SSD RAID on my production database. Normally I would expect a value of between 100 (new) and 0 (dead) for the ...
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2 votes
0 answers
3k views

Troubleshooting `Buffer I/O error` on software-raid/md-device

I've got a RAID-5 mdadm array that reliably causes Buffer I/O error on dev md0, logical block 1598030208, async page read to be written do dmesg when reading that block. Of course, the read also ...
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1 vote
0 answers
518 views

Smartd supress/change level for FAILURE PREDICTION THRESHOLD EXCEEDED

I'm using smartd to monitor drive health It started compaining about FAILURE PREDICTION THRESHOLD EXCEEDED for one drive, but I extensively tested that drive and it's fully functional That drive is ...
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  • 187
1 vote
0 answers
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S.M.A.R.T Power_On_Hours wrap around with Seagate Baracuda?

I have a well used Seagate Barracuda 7200.9 with 80 GB. The smart report shows Power_On_Hours 0x0032 094 094 000 Old_age Always - 5646 But that can't be right. ...
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