FreeNas Pools Healthy, but errors on disk?

Discussion in 'FreeBSD and FreeNAS' started by methos, Oct 21, 2015.

  1. methos

    methos New Member

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    I get this when logging into FreeNas below, however, everything "appears" healthy.

    Build FreeNAS-9.3-STABLE-201508250051
    Hardware: SuperMicro,

    • CRITICAL: Device: /dev/ada7, 10 Currently unreadable (pending) sectors
    • CRITICAL: Device: /dev/ada7, 10 Offline uncorrectable sectors
    • CRITICAL: Device: /dev/ada0, 1 Offline uncorrectable sectors
    • OK: There is a new update available! Apply it in System -> Update tab.
    • CRITICAL: The capacity for the volume 'xtank' is currently at 91%, while the recommended value is below 80%.

    [root@san02] ~# zfs list
    NAME USED AVAIL REFER MOUNTPOINT
    USBMOB 2.08T 2.31T 2.08T /mnt/USBMOB
    freenas-boot 800M 6.42G 31K none
    freenas-boot/ROOT 785M 6.42G 25K none
    freenas-boot/ROOT/FreeNAS-9.3-STABLE-201509022158 771M 6.42G 524M /
    freenas-boot/ROOT/Initial-Install 1K 6.42G 510M legacy
    freenas-boot/ROOT/default 13.8M 6.42G 524M legacy
    freenas-boot/grub 13.6M 6.42G 6.79M legacy
    xtank 3.30T 212G 49.5K /mnt/xtank
    xtank/ahsay 3.19T 212G 2.72T /mnt/xtank/ahsay
    xtank/ftp 114G 212G 114G /mnt/xtank/ftp
    ztank 1.31T 1.32T 71.8K /mnt/ztank
    ztank/.system 205M 1.32T 166M legacy
    ztank/.system/configs-99e4bfc46fa746999fbe43521aa4e3fd 43.4K 1.32T 43.4K legacy
    ztank/.system/cores 31.8M 1.32T 31.8M legacy
    ztank/.system/rrd-99e4bfc46fa746999fbe43521aa4e3fd 43.4K 1.32T 43.4K legacy
    ztank/.system/samba4 4.72M 1.32T 4.72M legacy
    ztank/.system/syslog-99e4bfc46fa746999fbe43521aa4e3fd 2.61M 1.32T 2.61M legacy
    ztank/dump 378M 1.32T 378M /mnt/ztank/dump
    ztank/jails 25.4K 1.32T 25.4K /mnt/ztank/jails
    ztank/sp_images 148M 1.32T 148M /mnt/ztank/sp_images
    ztank/test 1.31T 2.03T 611G -
    [root@san02] ~#





    [root@san02] ~# zpool status
    pool: USBMOB
    state: ONLINE
    scan: scrub repaired 0 in 18h49m with 0 errors on Sun Oct 11 18:49:49 2015
    config:

    NAME STATE READ WRITE CKSUM
    USBMOB ONLINE 0 0 0
    gptid/40ced978-5024-11e5-a665-003048c3cf3e ONLINE 0 0 0

    errors: No known data errors

    pool: freenas-boot
    state: ONLINE
    scan: scrub repaired 0 in 0h1m with 0 errors on Fri Oct 2 03:46:52 2015
    config:

    NAME STATE READ WRITE CKSUM
    freenas-boot ONLINE 0 0 0
    da0p2 ONLINE 0 0 0

    errors: No known data errors

    pool: xtank
    state: ONLINE
    scan: scrub repaired 0 in 14h9m with 0 errors on Sun Sep 27 14:09:33 2015
    config:

    NAME STATE READ WRITE CKSUM
    xtank ONLINE 0 0 0
    raidz1-0 ONLINE 0 0 0
    gptid/a2761390-5773-11e2-bf5d-003048c3cf3e ONLINE 0 0 0
    gptid/a2daf91a-5773-11e2-bf5d-003048c3cf3e ONLINE 0 0 0
    gptid/a34308c4-5773-11e2-bf5d-003048c3cf3e ONLINE 0 0 0
    gptid/a3aabc7b-5773-11e2-bf5d-003048c3cf3e ONLINE 0 0 0
    gptid/e141fdfd-b6c0-11e4-a51a-003048c3cf3e ONLINE 0 0 0

    errors: No known data errors

    pool: ztank
    state: ONLINE
    scan: scrub repaired 0 in 5h49m with 0 errors on Sun Oct 4 02:49:33 2015
    config:

    NAME STATE READ WRITE CKSUM
    ztank ONLINE 0 0 0
    raidz1-0 ONLINE 0 0 0
    gptid/e660e8e7-536d-11e2-be08-003048c3cf3e ONLINE 0 0 0
    gptid/2654eda6-4d5a-11e2-be08-003048c3cf3e ONLINE 0 0 0
    gptid/26ab7aa8-4d5a-11e2-be08-003048c3cf3e ONLINE 0 0 0
    gptid/2703e5c2-4d5a-11e2-be08-003048c3cf3e ONLINE 0 0 0
    logs
    mirror-1 ONLINE 0 0 0
    gptid/2763984d-4d5a-11e2-be08-003048c3cf3e ONLINE 0 0 0
    gptid/27bab769-4d5a-11e2-be08-003048c3cf3e ONLINE 0 0 0

    errors: No known data errors
    [root@san02] ~#
    [root@san02] ~#
     
    #1
  2. xnoodle

    xnoodle Active Member

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    Check SMART data via smartctl / smartmontools
     
    #2
  3. methos

    methos New Member

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    The reporting bad HD is as follows per smartctl; *shrug* looks good?



    [root@san02] ~# smartctl -a /dev/ada7
    smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p23 amd64] (local build)
    Copyright (C) 2002-14, Bruce Allen, Christian Franke, smartmontools

    === START OF INFORMATION SECTION ===
    Model Family: Western Digital RE4
    Device Model: WDC WD1003FBYX-01Y7B1
    Serial Number: WD-WCAW34085596
    LU WWN Device Id: 5 0014ee 2074b690d
    Firmware Version: 01.01V02
    User Capacity: 1,000,204,886,016 bytes [1.00 TB]
    Sector Size: 512 bytes logical/physical
    Rotation Rate: 7200 rpm
    Device is: In smartctl database [for details use: -P show]
    ATA Version is: ATA8-ACS (minor revision not indicated)
    SATA Version is: SATA 3.0, 3.0 Gb/s (current: 3.0 Gb/s)
    Local Time is: Wed Oct 21 19:53:02 2015 EDT
    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
     
    #3
  4. xnoodle

    xnoodle Active Member

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    SMART is passing, but the critical message was for two different attributes . Look for the "Currently unreadable (pending) sectors" and "Offline uncorrectable sectors" count. If those continue to increase you may want to check your cabling and/or RMA the drive.
     
    #4
    Terry Kennedy likes this.
  5. EffrafaxOfWug

    EffrafaxOfWug Radioactive Member

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    Not a FreeNAS user, but does it automatically schedule SMART self-tests? Most distros I've run into don't enable them by default and I don't know if FreeNAS is any different. Have you tried running a short one against the offending drive manually (if other FreeNAS people say it's doable)?

    The FreeNAS doc I read here seems to suggest they're not on by default since it talks about setting up a cron for them.
     
    #5
  6. Terry Kennedy

    Terry Kennedy Well-Known Member

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    I'd replace them proactively. Things may not get worse (although in my experience they will) but they definitely won't get better. I've never had a manufacturer balk at a replacement for even a single sector. If these are used and/or OEM drives, there may not be a warranty on them. If the original poster bought them all at the same time from the same seller, they may have been mishandled at some point and even if they haven't, if they're all the same age and model another drive may start acting up. The last thing you want is to have another drive fail while doing a ZFS resilver / RAID rebuild.
     
    #6
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