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    Xenserver Space Woes

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    • DustinB3403
      DustinB3403 @dafyre last edited by

      @dafyre said in Xenserver Space Woes:

      It looks as if his XenServer is reporting that the VMs are using 2x the space that they should be.

      Which to me makes me think that there were snap's that didn't get cleaned up properly. A reboot generally resolves this kind of issue.

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

        @dafyre said in Xenserver Space Woes:

        It looks as if his XenServer is reporting that the VMs are using 2x the space that they should be.

        Can we determine if it is exactly 200%? If so... maybe the SAN is doing some kind of internal replication?

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

          @scottalanmiller said in Xenserver Space Woes:

          @dafyre said in Xenserver Space Woes:

          It looks as if his XenServer is reporting that the VMs are using 2x the space that they should be.

          Can we determine if it is exactly 200%? If so... maybe the SAN is doing some kind of internal replication?

          @jrc says... Xen Center reports 7378.5Gb Used, 4147.8Gb allocated out of 11166.3Gb

          So, not quite 2x. But right close.

          DustinB3403 jrc 2 Replies Last reply Reply Quote 0
          • DustinB3403
            DustinB3403 @dafyre last edited by

            @dafyre said in Xenserver Space Woes:

            @scottalanmiller said in Xenserver Space Woes:

            @dafyre said in Xenserver Space Woes:

            It looks as if his XenServer is reporting that the VMs are using 2x the space that they should be.

            Can we determine if it is exactly 200%? If so... maybe the SAN is doing some kind of internal replication?

            @jrc says... Xen Center reports 7378.5Gb Used, 4147.8Gb allocated out of 11166.3Gb

            So, not quite 2x. But right close.

            That's almost 300GB less than double the allocated. It's not the SAN doing something.

            What kind of retention / backup system do you have in place?

            jrc 1 Reply Last reply Reply Quote 0
            • jrc
              jrc @dafyre last edited by

              @scottalanmiller said in Xenserver Space Woes:

              @dafyre said in Xenserver Space Woes:

              It looks as if his XenServer is reporting that the VMs are using 2x the space that they should be.

              Can we determine if it is exactly 200%? If so... maybe the SAN is doing some kind of internal replication?

              I am nearly 100% sure the SAN is not doing anything more than presenting it's space to Xen. The fact that it's close to double the allocated is, I think, merely a co-incidence based on the fact that one of the VMs has a 2Tb VDI assigned to it that is mostly full. So I am pretty sure the problem is some sort of snapshot issue.

              When I run xe vdi-list is-a-snapshot=true I get:

              uuid ( RO) : 53d7329c-00fe-4659-a9fa-779e6341637e
              name-label ( RW): Staff Home
              name-description ( RW): VDI for staff home folders
              sr-uuid ( RO): 4558cecd-d90d-3259-7ea5-09478d0e386c
              virtual-size ( RO): 2193654546432
              sharable ( RO): false
              read-only ( RO): true

              uuid ( RO) : 586f6e9a-bf7d-4fc4-89aa-6568ba91cea5
              name-label ( RW): Staff Home
              name-description ( RW): VDI for staff home folders
              sr-uuid ( RO): 4558cecd-d90d-3259-7ea5-09478d0e386c
              virtual-size ( RO): 2193654546432
              sharable ( RO): false
              read-only ( RO): true

              Notice that both seem to be snapshots, and each is roughly 2Tb in size. So I think these are my culprits. Though what I can do with them I have no idea...

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

                @DustinB3403 said in Xenserver Space Woes:

                What kind of retention / backup system do you have in place?

                A non-working Unitrends implementation (another freaking thing I am trying to solve, and am starting to think it may be related to this problem).

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

                  @jrc said in Xenserver Space Woes:

                  @scottalanmiller said in Xenserver Space Woes:

                  @dafyre said in Xenserver Space Woes:

                  It looks as if his XenServer is reporting that the VMs are using 2x the space that they should be.

                  Can we determine if it is exactly 200%? If so... maybe the SAN is doing some kind of internal replication?

                  I am nearly 100% sure the SAN is not doing anything more than presenting it's space to Xen. The fact that it's close to double the allocated is, I think, merely a co-incidence based on the fact that one of the VMs has a 2Tb VDI assigned to it that is mostly full. So I am pretty sure the problem is some sort of snapshot issue.

                  When I run xe vdi-list is-a-snapshot=true I get:

                  uuid ( RO) : 53d7329c-00fe-4659-a9fa-779e6341637e
                  name-label ( RW): Staff Home
                  name-description ( RW): VDI for staff home folders
                  sr-uuid ( RO): 4558cecd-d90d-3259-7ea5-09478d0e386c
                  virtual-size ( RO): 2193654546432
                  sharable ( RO): false
                  read-only ( RO): true

                  uuid ( RO) : 586f6e9a-bf7d-4fc4-89aa-6568ba91cea5
                  name-label ( RW): Staff Home
                  name-description ( RW): VDI for staff home folders
                  sr-uuid ( RO): 4558cecd-d90d-3259-7ea5-09478d0e386c
                  virtual-size ( RO): 2193654546432
                  sharable ( RO): false
                  read-only ( RO): true

                  Notice that both seem to be snapshots, and each is roughly 2Tb in size. So I think these are my culprits. Though what I can do with them I have no idea...

                  If this is a snapshot issue, and you have no snapshots shown on the VM >Snapshots tab, for this VM I'd rescan your storage, and see if it is cleaned up.

                  Otherwise you'll have to reboot the system, let the system scan the storage.

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                  • DustinB3403
                    DustinB3403 @jrc last edited by

                    @jrc

                    Are you planning to stick with Unitrends and just fix it?

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

                      @DustinB3403 said in Xenserver Space Woes:

                      @jrc

                      Are you planning to stick with Unitrends and just fix it?

                      Well at this point if Unitrends would start to work, then yes we'll stick with it, at least until the support contract we paid for is up, at which point we'll go back out and see what other options are available to us. If I can't get Unitrends to work without having to re-write the code myself, then we may end up ditching it.

                      @DustinB3403 said in Xenserver Space Woes:

                      If this is a snapshot issue, and you have no snapshots shown on the VM >Snapshots tab, for this VM I'd rescan your storage, and see if it is cleaned up.

                      Otherwise you'll have to reboot the system, let the system scan the storage.

                      There are no snapshots listed in the VM's snapshot tab, and when I rescan the storage, nothing seems to happen or at least nothing changes. And as I said, I'll be rebooting the f-ing things this weekend.

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

                        @jrc said in Xenserver Space Woes:

                        @DustinB3403 said in Xenserver Space Woes:

                        @jrc

                        Are you planning to stick with Unitrends and just fix it?

                        Well at this point if Unitrends would start to work, then yes we'll stick with it, at least until the support contract we paid for is up, at which point we'll go back out and see what other options are available to us. If I can't get Unitrends to work without having to re-write the code myself, then we may end up ditching it.

                        @DustinB3403 said in Xenserver Space Woes:

                        If this is a snapshot issue, and you have no snapshots shown on the VM >Snapshots tab, for this VM I'd rescan your storage, and see if it is cleaned up.

                        Otherwise you'll have to reboot the system, let the system scan the storage.

                        There are no snapshots listed in the VM's snapshot tab, and when I rescan the storage, nothing seems to happen or at least nothing changes. And as I said, I'll be rebooting the f-ing things this weekend.

                        ~ Reboot now! No time for the weekend.. If it's gonna break its gonna break on company time damn it! ~

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

                          @DustinB3403 said in Xenserver Space Woes:

                          ~ Reboot now! No time for the weekend.. If it's gonna break its gonna break on company time damn it! ~

                          Well it's not broken now, everything is working as expected. So if I can schedule the down time it'll be better for everyone. However I am getting a "Run out of space while coalescing," which come to think on it may also be related...

                          dafyre 1 Reply Last reply Reply Quote 1
                          • dafyre
                            dafyre @jrc last edited by

                            @jrc said in Xenserver Space Woes:

                            @DustinB3403 said in Xenserver Space Woes:

                            ~ Reboot now! No time for the weekend.. If it's gonna break its gonna break on company time damn it! ~

                            Well it's not broken now, everything is working as expected. So if I can schedule the down time it'll be better for everyone. However I am getting a "Run out of space while coalescing," which come to think on it may also be related...

                            Oh man... You just messed up. Now it is definitely going to break!

                            jrc 1 Reply Last reply Reply Quote 0
                            • jrc
                              jrc @dafyre last edited by

                              @dafyre said in Xenserver Space Woes:

                              @jrc said in Xenserver Space Woes:

                              @DustinB3403 said in Xenserver Space Woes:

                              ~ Reboot now! No time for the weekend.. If it's gonna break its gonna break on company time damn it! ~

                              Well it's not broken now, everything is working as expected. So if I can schedule the down time it'll be better for everyone. However I am getting a "Run out of space while coalescing," which come to think on it may also be related...

                              Oh man... You just messed up. Now it is definitely going to break!

                              Well shit.... looks widely around for some wood to know on

                              1 Reply Last reply Reply Quote 0
                              • brianlittlejohn
                                brianlittlejohn last edited by

                                Make sure you have a backup before you reboot.

                                jrc 1 Reply Last reply Reply Quote 0
                                • jrc
                                  jrc @brianlittlejohn last edited by

                                  @brianlittlejohn said in Xenserver Space Woes:

                                  Make sure you have a backup before you reboot.

                                  Well so you see there's the rub. I suspect my backups aren't working because of this issue, and the potential fix is to reboot. So I am damned if I do, and I am damned if I don't.

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                                  • momurda
                                    momurda last edited by

                                    If you goto the Storage in your Xencenter (i assume yorue using xencenter to look at things) Go to the SR with trouble, and look at the Storage tab for that SR. In the disks section you may see those 2 'orphaned' vdi, as well as the real one.
                                    Is that the case? are they listed in Xencenter>SR>Storage?

                                    jrc 1 Reply Last reply Reply Quote 2
                                    • jrc
                                      jrc @momurda last edited by

                                      @momurda said in Xenserver Space Woes:

                                      If you goto the Storage in your Xencenter (i assume yorue using xencenter to look at things) Go to the SR with trouble, and look at the Storage tab for that SR. In the disks section you may see those 2 'orphaned' vdi, as well as the real one.
                                      Is that the case? are they listed in Xencenter>SR>Storage?

                                      The are not listed there. The only VDIs listed there are the ones actually being used by all my VMs.

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                                      • momurda
                                        momurda last edited by

                                        Ok, what about the SR where you Unitrends backup disks are? Is there anything amiss there?

                                        jrc 1 Reply Last reply Reply Quote 0
                                        • jrc
                                          jrc @momurda last edited by

                                          @momurda said in Xenserver Space Woes:

                                          Ok, what about the SR where you Unitrends backup disks are? Is there anything amiss there?

                                          Nope. Shows only the backup target VDIs (4 of them, each 2044Gb)

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                                          • momurda
                                            momurda last edited by momurda

                                            Hmmm. I ran xe vdi-list is-a-snapshot=true
                                            Got 1 result, a disk from our crm server. If you go to
                                            the Objects button instead of Infrastructure in XC(0_1466016707185_Capture.PNG
                                            You see in mine here, the 2 disk for crm01. One of them shows as a snapshot, even though the XC thinks there isnt one for this vm. This is a byproduct of failed backups i think with Unitrends, soemtimes they dont delete themselves.
                                            If you do this you may see your 2 vdi listed here as well as the disk actually being used.
                                            Ah weird formatting on the pic, soz.

                                            jrc 1 Reply Last reply Reply Quote 0
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