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I thought I'd mention that Xenserver 7 has been released. The blog post below tells a lot about what's changed.

Download the free version at

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Hi all, and thank you for letting me join the community. I work in a college in Ireland, in the Computing Department, and we recently started a new project to allow students to use virtualization in the labs. We chose XenServer 7.0, mainly because a) it's now open source b) we use Xen Project ourselves for the department infrastructure, so there was a level of familiarity.

So far I've installed XenServer on 2 identical Sunfire X6400 (4 interfaces each, all on the same network range) and pooled them together. There is a Xen Orchestra server running on Debian sitting between staff/students and the servers (please see diagram). This is all working fine, and I can login as a student (or staff) as well as the default admin.

I'm going to use routing policies to ensure interface 1 and interface 2 are used for the storage targets. This is fine to me. However, what I would really like is that a user creating a new VM from Xen Orchestra cannot even see eth0, eth1 or eth2 and therefore uses eth3 which is on the correct network for their VMs. Currently they can choose the wrong interface, even though I've locked them down and have not assigned any available IPs to them in XO. Anyone got any ideas for this?

The other issue, and this is the big one, is that I would like users in the "user" role (or I can use groups for this) to be able to create VMs, which only admin users can do. Letting staff and students login to XO as admins is our of the question, but XO does not allow "users" to create VMs, only reboot existing ones and stuff. Anyone got any thoughts?

Finally, and this is a wishlist item rather than required, users would only be able carry out actions on their own VMs, not other users. Because I've built XO from source and have access to ACLs and the such, I can probably muddle this together, but would again be great if anyone has any prior experience.

Thanks in advance!

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Got to love Xenserver 6.5 and the docker container feature. 

Interesting issue for anyone who wants to take a stab at it.

In my lab I've got a host that has an IPMI NIC, two Intel 82574L NICs on board, as well as two 4 port Intel 82571EB PCIe NICs.  Bringing the physical count of NICs to 11.  On first boot after a clean install of 6.5, 9 NICs were detected.  After some troubleshooting, I found that the 9th NIC was my IPMI NIC (which has now been disabled in the BIOS and no longer shows up).  Now that 8 NICs show up I thought I was good, only to find out that NIC 3 & 4 are actually the 82574L's that are on board...  This is leaving me more puzzled.  Both of my four port NICs work fine when plugged in individually.  Though when both are in the box together, one works fine, and the other has only half the NICs displayed?  Lspci shows 4 on one and 2  on the other.  These seem to be recognized just fine on other distros (even CentOS 6.5).  

I'm at a loss, if anyone has any pointers let me know.

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I'm sure there will be an official announcement in here later but I wanted to let everyone know that Creedence has been released! Interestingly enough they only bumped the minor Xenserver number to 6.5. 

Download away!

Anyone could help me with XEN server 6.2.. Object: Solution for DR.
I have a lot's of VM Linux (CentOs), no more then 10; but I'm searching software as Acronis Linux/Xen for backup full virtual machine without agent's into machine.
Have you solutions or answers or suggestion?

Anyone could help understand this oomkiller log? Oom kills are crushing the master of one of my 6.2 pools. Most of xapi services are killed so I can not evacuate the running VM and reboot.

All what I see is that highmen is fragmented, but I don't know what is causing this.

[10218584.029929] rotate_logs_by_ invoked oom-killer: gfp_mask=0x84d0, order=0, oom_adj=0
[10218584.029937] Pid: 18279, comm: rotate_logs_by_ Not tainted #1
[10218584.029943] Call Trace:
[10218584.029953]  [<c0190a24>] oom_kill_process+0x144/0x290
[10218584.029960]  [<c0190ff2>] __out_of_memory+0xd2/0x130
[10218584.029966]  [<c01910ba>] out_of_memory+0x6a/0xc0
[10218584.029972]  [<c019421f>] __alloc_pages_nodemask+0x56f/0x580
[10218584.029979]  [<c011d064>] pte_alloc_one+0x24/0x60
[10218584.029985]  [<c01a958a>] __pte_alloc+0x1a/0x180
[10218584.029990]  [<c01ae03c>] copy_page_range+0x82c/0x900
[10218584.029997]  [<c011d4e5>] ? pgd_alloc+0xf5/0x240
[10218584.030003]  [<c013239a>] dup_mm+0x24a/0x420
[10218584.030009]  [<c01333a2>] copy_process+0xde2/0x1030
[10218584.030014]  [<c013370f>] do_fork+0x7f/0x390
[10218584.030020]  [<c0145797>] ? recalc_sigpending+0x27/0x60
[10218584.030026]  [<c01026fb>] sys_clone+0x3b/0x50
[10218584.030031]  [<c0104571>] syscall_call+0x7/0xb
[10218584.030036] Mem-Info:
[10218584.030039] DMA per-cpu:
[10218584.030043] CPU    0: hi:    0, btch:   1 usd:   0
[10218584.030047] CPU    1: hi:    0, btch:   1 usd:   0
[10218584.030051] CPU    2: hi:    0, btch:   1 usd:   0
[10218584.030055] CPU    3: hi:    0, btch:   1 usd:   0
[10218584.030059] CPU    4: hi:    0, btch:   1 usd:   0
[10218584.030064] CPU    5: hi:    0, btch:   1 usd:   0
[10218584.030068] CPU    6: hi:    0, btch:   1 usd:   0
[10218584.030072] CPU    7: hi:    0, btch:   1 usd:   0
[10218584.030075] Normal per-cpu:
[10218584.030079] CPU    0: hi:  155, btch:  38 usd: 139
[10218584.030083] CPU    1: hi:  155, btch:  38 usd: 160
[10218584.030087] CPU    2: hi:  155, btch:  38 usd: 103
[10218584.030091] CPU    3: hi:  155, btch:  38 usd:  86
[10218584.030096] CPU    4: hi:  155, btch:  38 usd: 137
[10218584.030100] CPU    5: hi:  155, btch:  38 usd: 123
[10218584.030104] CPU    6: hi:  155, btch:  38 usd: 132
[10218584.030108] CPU    7: hi:  155, btch:  38 usd: 117
[10218584.030112] HighMem per-cpu:
[10218584.030115] CPU    0: hi:  155, btch:  38 usd:  25
[10218584.030119] CPU    1: hi:  155, btch:  38 usd:  36
[10218584.030123] CPU    2: hi:  155, btch:  38 usd: 133
[10218584.030127] CPU    3: hi:  155, btch:  38 usd:  46
[10218584.030132] CPU    4: hi:  155, btch:  38 usd:  43
[10218584.030136] CPU    5: hi:  155, btch:  38 usd:  18
[10218584.030140] CPU    6: hi:  155, btch:  38 usd:  96
[10218584.030144] CPU    7: hi:  155, btch:  38 usd: 119
[10218584.030151] active_anon:36797 inactive_anon:10138 isolated_anon:0
[10218584.030152]  active_file:9182 inactive_file:7862 isolated_file:0
[10218584.030153]  unevictable:11819 dirty:97 writeback:0 unstable:0
[10218584.030154]  free:789795 slab_reclaimable:2910 slab_unreclaimable:131975
[10218584.030155]  mapped:5943 shmem:373 pagetables:0 bounce:0
[10218584.030174] DMA free:2696kB min:80kB low:100kB high:120kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:28kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:16256kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:92kB slab_unreclaimable:5840kB kernel_stack:728kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[10218584.030193] lowmem_reserve[]: 0 658 4015 4015
[10218584.030206] Normal free:3336kB min:3336kB low:4168kB high:5004kB active_anon:0kB inactive_anon:0kB active_file:388kB inactive_file:192kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:674040kB mlocked:0kB dirty:0kB writeback:0kB mapped:284kB shmem:0kB slab_reclaimable:11548kB slab_unreclaimable:522060kB kernel_stack:3960kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:329 all_unreclaimable? yes
[10218584.030227] lowmem_reserve[]: 0 0 26860 26860
[10218584.030239] HighMem free:3153148kB min:512kB low:4752kB high:8992kB active_anon:147188kB inactive_anon:40552kB active_file:36340kB inactive_file:31228kB unevictable:47276kB isolated(anon):0kB isolated(file):0kB present:3438148kB mlocked:47276kB dirty:388kB writeback:0kB mapped:23488kB shmem:1492kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[10218584.030259] lowmem_reserve[]: 0 0 0 0
[10218584.030266] DMA: 400*4kB 100*8kB 0*16kB 0*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2720kB
[10218584.030285] Normal: 400*4kB 1*8kB 1*16kB 1*32kB 4*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 3320kB
[10218584.030304] HighMem: 815*4kB 17320*8kB 12842*16kB 8063*32kB 4558*64kB 2678*128kB 1414*256kB 930*512kB 582*1024kB 188*2048kB 23*4096kB = 3153148kB
[10218584.030324] 19162 total pagecache pages
[10218584.030328] 512 pages in swap cache
[10218584.030332] Swap cache stats: add 1372, delete 860, find 10773/10775
[10218584.030336] Free swap  = 522144kB
[10218584.030340] Total swap = 524280kB
[10218584.039583] 1050624 pages RAM
[10218584.039595] 866306 pages HighMem
[10218584.039601] 41126 pages reserved
[10218584.039606] 81350 pages shared
[10218584.039611] 200061 pages non-shared
[10218584.039618] Out of memory: kill process 18172 (v6d) score 1176 or a child
[10218584.039627] Killed process 18230 (v6d)

Hello, I am trying to create Ubuntu vm using XenCebnter but I keep getting this error : "The bootloader for this VM returned an error --did the VM installation succeed? INVALID_SOURCE."
I tried to install from an iso I saved in my SR, I tried using url and I tried using coomand line. But i got the same error for all.
Can someone advice me on what to do next.
Thank you.

Can anybody tell me how can I set a remote access to Xenserver?
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