vnstat / network wrong peaks while delete snapshot

Lars Schotte lars.schotte at schotteweb.de
Sun Jun 5 19:19:38 UTC 2011


thats exactly what vmware needs to comprehend.

you dont need to tell me that ;-)

On Sun, 05 Jun 2011 20:55:53 +0200
Reindl Harald <h.reindl at thelounge.net> wrote:

> sorry to say but you have no idea what about i am speaking
> snapshots are not taken "through that virtualized ethernet device"
> 
> the guest is freezed for a short time to take a consistent
> state of his drives which are copied on the host, the copy
> has NOTHING to to with the ethernet device in the guest
> 
> Am 05.06.2011 20:50, schrieb Lars Schotte:
> > so you have to somehow convince vmware not to take snapshots through
> > that virtualized ethernet devices. maybe an extra ethernet device
> > would help. the first one left for that snapshots fiction and
> > second for networking.
> > 
> > On Sun, 05 Jun 2011 20:34:49 +0200
> > Reindl Harald <h.reindl at thelounge.net> wrote:
> > 
> >>
> >>
> >> Am 05.06.2011 16:55, schrieb Lars Schotte:
> >>> i definitely wouldnt come to that idea to monitor guests on guests
> >>> w/ vnstat because even if it had worked perfectly, its still just
> >>> a fictional ethernet device. 
> >>
> >> what is there fictional?
> >>
> >> it is a ethernet-device with all features of a ethernet-device
> >> ond the guest does know nothing about virtualization
> >>
> >>> maybe a vmware monitoring software would be
> >>> more precise or an alternative would be to bind each to a virtual
> >>> network card and do the monitoring on the host measuring only the
> >>> output data and then routing all this devices out, thereby using
> >>> the host as a router, which is of course a more complicated setup
> >>> and i am not even sure if it would work, but thats the way i
> >>> would try to build it up.
> >>
> >> jesus for what reason?
> >>
> >> the host is not a router, the host is a virtual switch
> >> and yes you have monitoring on the vCenter-Server but not
> >> in a console like output and not with exactly numbers
> >>
> >> this are two different worlds and i see no reason why
> >> vnstat would not work on the guest because it does
> >>
> >> only while snapshots are taken / removed there are some
> >> short untrue peaks which would be easaliy could filtered
> >> in the guest-software only by their hughe numbers which are
> >> clearly impossible and the problem is that this does not
> >> happen and so if some measuring says "20 GB in two seconds"
> >> all averages are destroyed
> >>
> >>> On Sun, 05 Jun 2011 16:20:16 +0200
> >>> Reindl Harald <h.reindl at thelounge.net> wrote:
> >>>
> >>>> yes!
> >>>>
> >>>> works perfectly, only after dealing with snapshots there are
> >>>> this horrible peaks on 64bit guests
> >>>>
> >>>> Am 05.06.2011 16:18, schrieb Lars Schotte:
> >>>>> w8, so you are saying that you run vnstat on the guests?
> >>>>>
> >>>>> On Sun, 05 Jun 2011 16:16:44 +0200
> >>>>> Reindl Harald <h.reindl at thelounge.net> wrote:
> >>>>>
> >>>>>>
> >>>>>> Am 05.06.2011 16:12, schrieb Lars Schotte:
> >>>>>>> is ifconfig showing this huge numberg at that time as well? 
> >>>>>>
> >>>>>> not currently, but i have seen such outputs in "ifconfig" too
> >>>>>>
> >>>>>>> do you have a 64bit OS or 32bit? 
> >>>>>>
> >>>>>> seems only affect x86_64 guests
> >>>>>> good input - the voip-machine is the only 32bit and
> >>>>>> does not show this
> >>>>>>
> >>>>>>> did you try to report it to vmware as well?
> >>>>>>
> >>>>>> they will anser "fedora is not official supported and
> >>>>>> open-vm-tools vom rpmfusion too" on ESXi :-(
> >>>>>>
> >>>>>>> On Sun, 05 Jun 2011 16:06:48 +0200
> >>>>>>> Reindl Harald <h.reindl at thelounge.net> wrote:
> >>>>>>>
> >>>>>>>> has anybody an idea for which package i should file a
> >>>>>>>> bugreport for this? i guess "vnstat" is only the postman
> >>>>>>>>
> >>>>>>>> every night from friday to saturday from our
> >>>>>>>> fedora-vmware-guests is made a snapshot by "VMware Data
> >>>>>>>> Recovery" to take a consistent backup and while deleting the
> >>>>>>>> snapshot something triggers horrible wrong values to "vnstat"
> >>>>>>>> which makes monthly summary useless
> >>>>>>>>
> >>>>>>>> see below :-(
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>  eth0  /  daily
> >>>>>>>>
> >>>>>>>>          day         rx      |     tx      |    total    |
> >>>>>>>> avg. rate
> >>>>>>>> ------------------------+-------------+-------------+---------------
> >>>>>>>> 05/07/11   16777216.00 TiB |    5.56 GiB | 16777216.00 TiB |
> >>>>>>>> 1668.00 Tbit/s 05/08/11    855.27 MiB |    4.24 GiB |    5.07
> >>>>>>>> GiB | 492.63 kbit/s 05/09/11      2.35 GiB |   72.14 GiB |
> >>>>>>>> 74.49 GiB | 7.23 Mbit/s 05/10/11      1.47 GiB |   11.41 GiB
> >>>>>>>> |   12.88 GiB | 1.25 Mbit/s 05/11/11      1.11 GiB |    6.19
> >>>>>>>> GiB |    7.30 GiB | 708.76 kbit/s 05/12/11      1.17 GiB |
> >>>>>>>> 5.82 GiB | 6.99 GiB | 678.38 kbit/s 05/13/11      1.12 GiB
> >>>>>>>> |    6.50 GiB |    7.62 GiB | 739.88 kbit/s 05/14/11
> >>>>>>>> 33554432.00 TiB | 4.10 GiB | 33554432.00 TiB | 3336.00 Tbit/s
> >>>>>>>> 05/15/11    778.85 MiB |    4.45 GiB |    5.21 GiB |  505.87
> >>>>>>>> kbit/s 05/16/11 1.30 GiB | 7.37 GiB |    8.67 GiB |  842.06
> >>>>>>>> kbit/s 05/17/11 1.38 GiB |    8.18 GiB |    9.56 GiB |
> >>>>>>>> 928.20 kbit/s 05/18/11      1.21 GiB |    6.83 GiB |    8.04
> >>>>>>>> GiB | 780.32 kbit/s 05/19/11 1.03 GiB |    5.68 GiB |
> >>>>>>>> 6.72 GiB | 652.10 kbit/s 05/20/11      1.11 GiB |    5.18
> >>>>>>>> GiB |    6.29 GiB | 610.67 kbit/s 05/21/11   16777216.00 TiB
> >>>>>>>> |    3.97 GiB | 16777216.00 TiB | 1668.00 Tbit/s 05/22/11
> >>>>>>>> 902.15 MiB | 6.74 GiB |    7.62 GiB |  739.58 kbit/s
> >>>>>>>> 05/23/11      1.28 GiB |   16.56 GiB | 17.84 GiB |    1.73
> >>>>>>>> Mbit/s 05/24/11      1.60 GiB |   11.42 GiB |   13.02 GiB
> >>>>>>>> |    1.26 Mbit/s 05/25/11 1.47 GiB |    6.65 GiB |    8.12
> >>>>>>>> GiB |  788.78 kbit/s 05/26/11      1.23 GiB | 7.40 GiB |
> >>>>>>>> 8.64 GiB |  838.46 kbit/s 05/27/11      1.43 GiB |    6.75
> >>>>>>>> GiB |    8.19 GiB | 794.70 kbit/s 05/28/11 33554432.00 TiB
> >>>>>>>> |    5.44 GiB | 33554432.00 TiB | 3336.00 Tbit/s 05/29/11
> >>>>>>>> 855.65 MiB | 4.89 GiB |    5.72 GiB |  555.47 kbit/s
> >>>>>>>> 05/30/11      1.43 GiB | 9.20 GiB |   10.62 GiB |    1.03
> >>>>>>>> Mbit/s 05/31/11      1.77 GiB | 9.52 GiB |   11.29 GiB |
> >>>>>>>> 1.10 Mbit/s 06/01/11      1.51 GiB | 9.43 GiB |   10.94 GiB
> >>>>>>>> |    1.06 Mbit/s 06/02/11 906.48 MiB | 5.90 GiB |    6.79
> >>>>>>>> GiB |  658.85 kbit/s 06/03/11      2.36 GiB | 9.40 GiB |
> >>>>>>>> 11.77 GiB |    1.14 Mbit/s 06/04/11   16777216.00 TiB |
> >>>>>>>> 5.15 GiB | 16777216.00 TiB | 1668.00 Tbit/s 06/05/11
> >>>>>>>> 585.88 MiB | 2.30 GiB | 2.87 GiB |  417.64 kbit/s
> >>>>>>>> ------------------------+-------------+-------------+---------------
> >>>>>>>>
> >>>>>>>>      estimated       877 MiB |    3.44 GiB |    4.30 GiB |
> >>>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>
> >>>>>
> >>>>
> >>>
> >>>
> >>
> > 
> > 
> 


-- 
Lars Schotte
@ Hana (F14)
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