Offline uncorrectable sectors in SSDs being used for ZFS L2ARC?

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I have two enterprise-grade SSDs that I've been using for L2ARC in an OpenZFS pool for a few years. Workflow during this time has been fairly heavy, with lots of reads and writes, serving up video to clients for video post-production.



Recently, got a couple of critical alerts about the L2ARC SSDs:



CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da0 [SAT], 215869351264256 Offline uncorrectable sectors
CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da1 [SAT], 174264003067904 Offline uncorrectable sectors



Obviously there's no risk of data loss, since these are just L2ARC, but is it time to just get them replaced?



Am I sacrificing performance? If not, is there a way to reset or ignore the bad sectors?



Using FreeNAS-11.1-U6.






freebsd zfs ssd freenas zfs-l2arc






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    I have two enterprise-grade SSDs that I've been using for L2ARC in an OpenZFS pool for a few years. Workflow during this time has been fairly heavy, with lots of reads and writes, serving up video to clients for video post-production.



    Recently, got a couple of critical alerts about the L2ARC SSDs:



    CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da0 [SAT], 215869351264256 Offline uncorrectable sectors
    CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da1 [SAT], 174264003067904 Offline uncorrectable sectors



    Obviously there's no risk of data loss, since these are just L2ARC, but is it time to just get them replaced?



    Am I sacrificing performance? If not, is there a way to reset or ignore the bad sectors?



    Using FreeNAS-11.1-U6.






    freebsd zfs ssd freenas zfs-l2arc






    share























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      I have two enterprise-grade SSDs that I've been using for L2ARC in an OpenZFS pool for a few years. Workflow during this time has been fairly heavy, with lots of reads and writes, serving up video to clients for video post-production.



      Recently, got a couple of critical alerts about the L2ARC SSDs:



      CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da0 [SAT], 215869351264256 Offline uncorrectable sectors
      CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da1 [SAT], 174264003067904 Offline uncorrectable sectors



      Obviously there's no risk of data loss, since these are just L2ARC, but is it time to just get them replaced?



      Am I sacrificing performance? If not, is there a way to reset or ignore the bad sectors?



      Using FreeNAS-11.1-U6.






      freebsd zfs ssd freenas zfs-l2arc






      share













      I have two enterprise-grade SSDs that I've been using for L2ARC in an OpenZFS pool for a few years. Workflow during this time has been fairly heavy, with lots of reads and writes, serving up video to clients for video post-production.



      Recently, got a couple of critical alerts about the L2ARC SSDs:



      CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da0 [SAT], 215869351264256 Offline uncorrectable sectors
      CRITICAL: Oct. 22, 2018, 6:12 p.m. - Device: /dev/da1 [SAT], 174264003067904 Offline uncorrectable sectors



      Obviously there's no risk of data loss, since these are just L2ARC, but is it time to just get them replaced?



      Am I sacrificing performance? If not, is there a way to reset or ignore the bad sectors?



      Using FreeNAS-11.1-U6.






      freebsd zfs ssd freenas zfs-l2arc




      freebsd zfs ssd freenas zfs-l2arc





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      user260467

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          Those numbers are obviously bogus. Your SSD doesn't have that many sectors at all, let alone offline uncorrectable ones. Check for firmware updates for your SSD that will fix the problem. Otherwise, ignore it. If you're really paranoid, you could replace the drives, but in that case you should use different drives, not the same brand from the same manufacturer (because they obviously have faulty firmware).






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            Those numbers are obviously bogus. Your SSD doesn't have that many sectors at all, let alone offline uncorrectable ones. Check for firmware updates for your SSD that will fix the problem. Otherwise, ignore it. If you're really paranoid, you could replace the drives, but in that case you should use different drives, not the same brand from the same manufacturer (because they obviously have faulty firmware).






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              up vote
              2
              down vote













              Those numbers are obviously bogus. Your SSD doesn't have that many sectors at all, let alone offline uncorrectable ones. Check for firmware updates for your SSD that will fix the problem. Otherwise, ignore it. If you're really paranoid, you could replace the drives, but in that case you should use different drives, not the same brand from the same manufacturer (because they obviously have faulty firmware).






              share|improve this answer






















                up vote
                2
                down vote










                up vote
                2
                down vote









                Those numbers are obviously bogus. Your SSD doesn't have that many sectors at all, let alone offline uncorrectable ones. Check for firmware updates for your SSD that will fix the problem. Otherwise, ignore it. If you're really paranoid, you could replace the drives, but in that case you should use different drives, not the same brand from the same manufacturer (because they obviously have faulty firmware).






                share|improve this answer












                Those numbers are obviously bogus. Your SSD doesn't have that many sectors at all, let alone offline uncorrectable ones. Check for firmware updates for your SSD that will fix the problem. Otherwise, ignore it. If you're really paranoid, you could replace the drives, but in that case you should use different drives, not the same brand from the same manufacturer (because they obviously have faulty firmware).







                share|improve this answer












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                share|improve this answer










                answered 2 hours ago









                Michael Hampton♦

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