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    Ubuntu Systemd Bad Entry

    Scheduled Pinned Locked Moved IT Discussion
    systemdubuntuvmext4smartctlerrorerrorssmartcorruptedbuffer io error on devicebuffer iodm-0
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    • DustinB3403D
      DustinB3403
      last edited by

      This issue is still occurring and interrupting my backup schedule for my VM's.

      The host appears to be fine. So either I have to build a new VM, or something is wrong with the host.

      Guest0_1464176384224_XenCenterMain_2016-05-25_07-39-38.png

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      • DustinB3403D
        DustinB3403
        last edited by

        So doing to a smartctl on the host it appears that /dev/sdb does have several errors. I'll be replacing this drive today and see if the issue persist.

        The other 3 disks have no smart errors at all.

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        • DustinB3403D
          DustinB3403
          last edited by

          essentially this one disk is in a pre-failed state due to age.

          So performing

          mdadm /dev/md0 --fail /dev/sdb --remove /dev/sdb

          and then replacing this disk I should be in a good state.

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          • DustinB3403D
            DustinB3403
            last edited by

            And the array is resilvering the now replaced disk.

            As an FYI for anyone on software RAID, the drives are organized in a manner that aligns to the SATA connections on the board.

            IE : USB boot device is SDA

            SATA1 (or 0 however it is labeled) = SDB
            SATA2 = SDC
            and so on.

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            • DustinB3403D
              DustinB3403
              last edited by

              Well at least for now, the I/O errors have stopped after I replaced the bad disk in the host array and reverted the VM.

              I'll keep an eye on it and report back if the issue comes back.

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              • DustinB3403D
                DustinB3403
                last edited by

                And these are back.

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                • scottalanmillerS
                  scottalanmiller
                  last edited by

                  Same disk?

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                  • DustinB3403D
                    DustinB3403
                    last edited by

                    On the guest OS there is only 1 disk (it's presented from the array).

                    I checked the smart stats on each drive and found no issues. MD was also fine.

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                    • DustinB3403D
                      DustinB3403
                      last edited by

                      0_1464262100485_XenCenterMain_2016-05-26_07-28-08.png

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                      • DustinB3403D
                        DustinB3403
                        last edited by

                        0_1464262144980_XenCenterMain_2016-05-26_07-28-53.png

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                        • DustinB3403D
                          DustinB3403
                          last edited by

                          Although on a separate note..... this is a shit desktop... that is acting as the hypervisor... so errors really shouldn't surprise me.

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                          • DustinB3403D
                            DustinB3403
                            last edited by

                            All disks in the host are marked as "Old_age" so there really isn't much that I can do besides assemble something else.

                            Hopefully out of newer equipment.

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                            • DustinB3403D
                              DustinB3403
                              last edited by

                              Maybe I'm reading this wrong.. Smart overall-health self-assessment is passed on all drives.

                              So maybe it's just a column saying "it'll fail here"

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                              • DustinB3403D
                                DustinB3403
                                last edited by

                                I'm performing long tests on each of the drives to confirm the information I have is accurate. I'll update in ~90 minutes.

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                                • scottalanmillerS
                                  scottalanmiller
                                  last edited by

                                  You can watch this while you wait....

                                  Youtube Video

                                  DustinB3403D 1 Reply Last reply Reply Quote 0
                                  • DustinB3403D
                                    DustinB3403 @scottalanmiller
                                    last edited by

                                    @scottalanmiller said in Ubuntu Systemd Bad Entry:

                                    You can watch this while you wait....

                                    Youtube Video

                                    hahaha thanks...

                                    You might as well have Rick Rolled me.

                                    scottalanmillerS 1 Reply Last reply Reply Quote 0
                                    • scottalanmillerS
                                      scottalanmiller @DustinB3403
                                      last edited by

                                      @DustinB3403 Rick Rolling the Moldovan way.

                                      1 Reply Last reply Reply Quote 2
                                      • DustinB3403D
                                        DustinB3403
                                        last edited by

                                        I'm curious as to why the VM is showing these issues, but the hypervisor isn't listing any issues at all.

                                        scottalanmillerS 1 Reply Last reply Reply Quote 0
                                        • scottalanmillerS
                                          scottalanmiller @DustinB3403
                                          last edited by

                                          @DustinB3403 said in Ubuntu Systemd Bad Entry:

                                          I'm curious as to why the VM is showing these issues, but the hypervisor isn't listing any issues at all.

                                          My guess is a driver issue. You are not getting errors from a disk but from an abstraction of the array. So you are two interfaces separated from the actual disks.

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                                          • DustinB3403D
                                            DustinB3403
                                            last edited by

                                            I'll just dump the VM, at this point it's been 4 days without a clean backup. It's only a Ubuntu VM with an NFS/SMB share.

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