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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

      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.

      1 Reply Last reply Reply Quote 1
      • 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.

        1 Reply Last reply Reply Quote 2
        • 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.

          1 Reply Last reply Reply Quote 0
          • 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.

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

              And these are back.

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

                Same disk?

                1 Reply Last reply Reply Quote 0
                • 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

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

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

                      1 Reply Last reply Reply Quote 0
                      • 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.

                          1 Reply Last reply Reply Quote 1
                          • 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.

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

                                            So after building a new NFS/SMB vm (and deleting the old one) the new system seems fine.

                                            Something must've got corrupted because of the smartctl errors.

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