[Vserver] How to setup FSS?

[Wilhelm Meier]

Hello,

how do I setup fair share scheduling? I've read 
http://linux-vserver.org/Scheduler+Parameters
and I understand, that if all contexts have running processes, the 
fillrate/fillinterval gives the "share" of cpu capacity the context gets 
(roughly, if you neglect the effect of the other parameters). But what 
happens, if only one context has running processes. Is this context then able 
to use the rest of cpu capacity, or is it waiting ?

--
Wilhelm Meier
email: [EMAIL PROTECTED]
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Re: [Vserver] vservers and unionfs

[Patrice Levesque]

> > As i said, i'm new to vservers on linux... bsd jails i know with
> > unionfs so that i would not rebuild the system again on each necesary
> > update.
> > I was thinking of keeping all the core packages on the host in ro mode
> > and only install particular packages based on necesity. This ideea is
> > best described by slax livecd.

This is I think a "synthetic vservers" concept application.  Tools for that are
distributed in the latest Jacques Gélinas' version of vserver userspace tools
available on http://www.solucorp.qc.ca/miscprj/s_context.hc?prjstate=1&nodoc=1

You can get a summary of the "synthetic vservers" technology on
http://www.solucorp.qc.ca/changes.hc?projet=vserver&version=0.40 in the "New
vservers commands".

By the way, Jacques' userspace vserver tools work perfectly with the latest
2.6-based ctx kernels, should anyone prefer the original 2.4 vserver management
style (I know I do!)


-- 
 --|--
|
Patrice Levesque
 http://ptaff.ca/
[EMAIL PROTECTED]
|
 --|--
--


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[Vserver] [Arch] powerpc aka. ppc64

[Herbert Poetzl]

Thanks to the Debian Folks (espeically Bastian Blank)
for providing a quad Power5 test machine!

initial power support looks good so far, but could
only be tested with 32bit userspace (yet), which
seems to work quite fine after a few adjustments.

enjoy,
Herbert


Linux-VServer Test [V0.14] Copyright (C) 2003-2005 H.Poetzl
chcontext is working.
chbind is working.
Linux 2.6.15-vs2.1.0.2-test ppc64/0.30.209/0.30.209 [Ea] (0)
VCI:  0002:0001 257 031101f6
---
[000]# succeeded.
[001]# succeeded.
[011]# succeeded.
[031]# succeeded.
[101]# succeeded.
[102]# succeeded.
[201]# succeeded.
[202]# succeeded.
---
[L01]# succeeded.
[D01]# succeeded.
[L02]# succeeded.
[D02]# succeeded.
[L03]# succeeded.
[D03]# succeeded.
[L11]# succeeded.
[D11]# succeeded.
[L12]# succeeded.
[D12]# succeeded.
[L21]# succeeded.
[D21]# succeeded.
[L22]# succeeded.
[D22]# succeeded.
[L31]# succeeded.
[D31]# succeeded.

Linux-VServer FS Test [V0.12] Copyright (C) 2005-2006 H.Poetzl
Linux 2.6.15-vs2.1.0.2-test ppc64/0.30.209
VCI:  0002:0001 257 031101f6 (ugid24)
---
testing ext2 filesystem ...
[000]. (ext2 format)
xid related tests ...
[001]. [002]. [011]. [012]. [014]. [015]. [019]. 
[020]. [021]. [022]. [023]. [024]. [025]. [026]. [027]. [028]. 
[033]. [034]. [035]. [037]. 
xattr related tests ...
[101]. [102]. [103]. [104]. [106]. [108]. [109]. 
[112]. [113]. [114]. [115]. [116]. [117]. [118]. [119]. 
[121]. [122]. [123]. [124]. [199]. 

---
testing ext3 filesystem ...
[000]. (ext3 format)
xid related tests ...
[001]. [002]. [011]. [012]. [014]. [015]. [019]. 
[020]. [021]. [022]. [023]. [024]. [025]. [026]. [027]. [028]. 
[033]. [034]. [035]. [037]. 
xattr related tests ...
[101]. [102]. [103]. [104]. [106]. [108]. [109]. 
[112]. [113]. [114]. [115]. [116]. [117]. [118]. [119]. 
[121]. [122]. [123]. [124]. [199]. 

---
testing xfs filesystem ...
[000]. (xfs format)
xid related tests ...
[001]. [002]. [011]. [012]. [014]. [015]. [019]. 
[020]. [021]. [022]. [023]. [024]. [025]. [026]. [027]. [028]. 
[033]. [034]. [035]. [037]. 
xattr related tests ...
[101]. [102]. [103]. [104]. [106]. [108]. [109]. 
[112]. [113]. [114]. [115]. [116]. [117]. [118]. [119]. 
[121]. [122]. [123]. [124]. [199]. 

---
testing reiser filesystem ...
[000]. (reiserfs format)
xid related tests ...
[001]. [002]. [011]. [012]. [014]. [015]. [019]. 
[020]. [021]. [022]. [023]. [024]. [025]. [026]. [027]. [028]. 
[033]. [034]. [035]. [037]. 
xattr related tests ...
[101]. [102]. [103]. [104]. [106]. [108]. [109]. 
[112]. [113]. [114]. [115]. [116]. [117]. [118]. [119]. 
[121]. [122]. [123]. [124]. [199]. 

---
testing jfs filesystem ...
[000]. (jfs format)
xid related tests ...
[001]. [002]. [011]. [012]. [014]. [015]. [019]. 
[020]. [021]. [022]. [023]. [024]. [025]. [026]. [027]. [028]. 
[033]. [034]. [035]. [037]. 
xattr related tests ...
[101]. [102]. [103]. [104]* [106]. [108]. [109]. 
[112]. [113]. [114]* [115]. [116]. [117]. [118]. [119]. 
[121]* [122]* [123]* [124]* [199]. 

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Re: [Vserver] Vservers and quotas

[Herbert Poetzl]

On Thu, Jan 05, 2006 at 08:40:06PM +0100, Grzegorz Nosek wrote:
> 2006/1/5, Herbert Poetzl <[EMAIL PROTECTED]>:
> > On Thu, Jan 05, 2006 at 07:44:23PM +0100, Grzegorz Nosek wrote:
> > > > OK, I'll try my luck with the cq-tools 0.06 - is there any
> > > > more-or-less up-to-date info about the tools? How do I use them?
> > >
> > > I found the testcq.sh script and after a bit of path tweaking I got
> > > them to succeed on ext2, ext3 and reiserfs (that's more than I
> > > actually care about currently) and I got to learn the invocation of
> > > mqon/mqoff in the process but I am still at a loss wrt. the actual
> > > parameters.
> >
> > hmm, good :) what kernel do you use atm?
> 
> On this machine it's 2.6.14.2p4smp.21 :) it is mostly 2.6.14.2 with vs
> 2.1.0-rc8 and the procfs fix. Other machines are running either the
> same kernel or 2.6.14.3 with vs 2.1.0-rc10
> 
> Now how do I use the cq-tools? Pretty please :))

well, they are for linux 2.4 and the quota patches, so
on linux 2.6 you can use them to turn quota on and off
but that's it ...

in your case, it just means that you have to set and
maitnain the quota on the host, and let the guests
suffer from the limitations :)

but let me know if you are interested in per-context
quota for 2.6, if there is a certain demand, I will
implement it ...

HTH,
Herbert

> Best regards,
>  Grzegorz Nosek
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Re: [Vserver] vservers and unionfs

[Herbert Poetzl]

On Thu, Jan 05, 2006 at 11:06:15PM +0200, Adrian Vasile wrote:
> As i said, i'm new to vservers on linux... bsd jails i know with
> unionfs so that i would not rebuild the system again on each necesary
> update.

depending on the packaging system (or the lack of)
the unionfs might be the easier (maintainability
wise) approach (in your particular case)

> I was thinking of keeping all the core packages on the host in ro mode
> and only install particular packages based on necesity. This ideea is
> best described by slax livecd.

in a unification setup you would have to install
the updates in all guests, and re-unify them again
nevertheless the listed advantages still apply.

> I'm always open to new and better ideas, so, any links are welcome.

consider unification like hardlinks, with a twist
the stable release makes them immutable but still
unlinkable (for updates), the devel release adds
CoW (Copy on Write) link breaking, which makes them
as flexible as normal files ...

HTH,
Herbert

> Adrian
> 
> Herbert Poetzl wrote:
> 
> >On Wed, Jan 04, 2006 at 11:42:32PM +0200, Adrian Vasile wrote:
> > 
> >
> >>Hi all,
> >>
> >>i'm just starting with the ideea of vserver and i was thinking if
> >>anyone could point me towards some info related to using (configuring)
> >>vserver with unionfs and maybe give some hardware requirements
> >>(memory, procs, space) needed to run a couple :)
> >>   
> >>
> >
> >the probably strange question is, why would you want
> >to use unionfs, when you can have unifiation, which
> >usually suits the linux-vserver guest setup much
> >more than some overlay filesystem?
> >
> >typical advantages over unionfs:
> >
> >- less overhead for access and modification
> >- reduced cache usage (hardlinks)
> >- can be re-unified at any time
> >- does not require patches or modules
> >
> >HTH,
> >Herbert
> >
> > 
> >
> >>ps:
> >>webber ~ # uname -a
> >>Linux webber 2.6.14-vs2.0.1-gentootest1 #1 SMP Wed Jan 4 18:41:47 EET 
> >>2006 x86_64 Intel(R) Xeon(TM) CPU 3.20GHz GenuineIntel GNU/Linux
> >>with 400GB and 2GB ECC RAM, just finished building it
> >>___
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> >>http://list.linux-vserver.org/mailman/listinfo/vserver
> >>   
> >>
> 
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Re: [Vserver] vservers and unionfs

[Adrian Vasile]

As i said, i'm new to vservers on linux... bsd jails i know with unionfs 
so that i would not rebuild the system again on each necesary update.


I was thinking of keeping all the core packages on the host in ro mode 
and only install particular packages based on necesity.

This ideea is best described by slax livecd.

I'm always open to new and better ideas, so, any links are welcome.

Adrian

Herbert Poetzl wrote:


On Wed, Jan 04, 2006 at 11:42:32PM +0200, Adrian Vasile wrote:
 


Hi all,

i'm just starting with the ideea of vserver and i was thinking if
anyone could point me towards some info related to using (configuring)
vserver with unionfs and maybe give some hardware requirements
(memory, procs, space) needed to run a couple :)
   



the probably strange question is, why would you want
to use unionfs, when you can have unifiation, which
usually suits the linux-vserver guest setup much
more than some overlay filesystem?

typical advantages over unionfs:

- less overhead for access and modification
- reduced cache usage (hardlinks)
- can be re-unified at any time
- does not require patches or modules

HTH,
Herbert

 


ps:
webber ~ # uname -a
Linux webber 2.6.14-vs2.0.1-gentootest1 #1 SMP Wed Jan 4 18:41:47 EET 
2006 x86_64 Intel(R) Xeon(TM) CPU 3.20GHz GenuineIntel GNU/Linux

with 400GB and 2GB ECC RAM, just finished building it
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Re: [Vserver] Vservers and quotas

[Grzegorz Nosek]

2006/1/5, Herbert Poetzl <[EMAIL PROTECTED]>:
> On Thu, Jan 05, 2006 at 07:44:23PM +0100, Grzegorz Nosek wrote:
> > > OK, I'll try my luck with the cq-tools 0.06 - is there any
> > > more-or-less up-to-date info about the tools? How do I use them?
> >
> > I found the testcq.sh script and after a bit of path tweaking I got
> > them to succeed on ext2, ext3 and reiserfs (that's more than I
> > actually care about currently) and I got to learn the invocation of
> > mqon/mqoff in the process but I am still at a loss wrt. the actual
> > parameters.
>
> hmm, good :) what kernel do you use atm?

On this machine it's 2.6.14.2p4smp.21 :) it is mostly 2.6.14.2 with vs
2.1.0-rc8 and the procfs fix. Other machines are running either the
same kernel or 2.6.14.3 with vs 2.1.0-rc10

Now how do I use the cq-tools? Pretty please :))

Best regards,
 Grzegorz Nosek
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Re: [Vserver] Vservers and quotas

[Herbert Poetzl]

On Thu, Jan 05, 2006 at 07:44:23PM +0100, Grzegorz Nosek wrote:
> > OK, I'll try my luck with the cq-tools 0.06 - is there any
> > more-or-less up-to-date info about the tools? How do I use them?
> 
> I found the testcq.sh script and after a bit of path tweaking I got
> them to succeed on ext2, ext3 and reiserfs (that's more than I
> actually care about currently) and I got to learn the invocation of
> mqon/mqoff in the process but I am still at a loss wrt. the actual
> parameters.

hmm, good :) what kernel do you use atm?

> Do I pass the path to /vservers/aquota.* or /vservers/*/aquota.*?
> 
> Do I use the real device (/dev/hda6 in my case) or /dev/vroot0?
> 
> Do I need a separate vroot for every vserver?
> 
> etc etc ;)
> 
> How do I even use it afterwards? What should be the expected outcome?
> 
> TIA,
>  Grzegorz Nosek
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Re: [Vserver] Vservers and quotas

[Grzegorz Nosek]

> OK, I'll try my luck with the cq-tools 0.06 - is there any
> more-or-less up-to-date info about the tools? How do I use them?

I found the testcq.sh script and after a bit of path tweaking I got
them to succeed on ext2, ext3 and reiserfs (that's more than I
actually care about currently) and I got to learn the invocation of
mqon/mqoff in the process but I am still at a loss wrt. the actual
parameters.

Do I pass the path to /vservers/aquota.* or /vservers/*/aquota.*?

Do I use the real device (/dev/hda6 in my case) or /dev/vroot0?

Do I need a separate vroot for every vserver?

etc etc ;)

How do I even use it afterwards? What should be the expected outcome?

TIA,
 Grzegorz Nosek
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Re: [Vserver] Vservers and quotas

[Grzegorz Nosek]

Hello

Thanks for your reply.

2006/1/5, Herbert Poetzl <[EMAIL PROTECTED]>:
>
> the problem with linux quotas (something which per-context
> quotas solve) is, that the quota files reside in only one
> location, the root of the associated filesystem

OK, I'll try my luck with the cq-tools 0.06 - is there any
more-or-less up-to-date info about the tools? How do I use them?

Best regards,
 Grzegorz Nosek
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Re: [Vserver] Vservers and quotas

[Herbert Poetzl]

On Thu, Jan 05, 2006 at 04:34:18PM +0100, Grzegorz Nosek wrote:
> Hello all,
> 
> I have a basic question regarding quota usage with vservers. My
> scenario is more or less like this:
> 
>  - I have xid tagging enabled (UID24/GID24)
> 
>  - vserver with e.g. xid= has users with uids in range 000 -
> 999 (and several system ones but these need no quotas)
> 
>  - I'm not interested (at the moment at least) in per-context quotas,
> only per-user ones
> 
>  - I need to manage the per-user quotas from within the vservers
> (preferably, only the specified users should be available - their
> files will be always created from within the vserver too so xid
> tagging is an option)
> 
>  - I don't need quotas on the host
> 
> My question is: where do I configure the quotas? The host? The
> vservers individually? Both?

the problem with linux quotas (something which per-context
quotas solve) is, that the quota files reside in only one
location, the root of the associated filesystem

the consequence is that you have to manage them there, i.e.
on the host, outside of all guests ...

they will be shown with quota and other tools which do not
look into those files, but query the kernel instead ...

HTH,
Herbert

>  Grzegorz Nosek
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Re: [Vserver] 2.6.15 Vserver patchs

[Herbert Poetzl]

On Thu, Jan 05, 2006 at 10:08:43PM +1030, Mike O'Connor wrote:
> Hi All
> 
> >From the conversation on the list, it would seem as if there are vs
> patch's for 2.6.15 kernel.
> 
> Where would I down load these patch's

from the Experimental area:
http://vserver.13thfloor.at/Experimental/

best,
Herbert

> I would like to test it as the 2.6.15 kernels are the first 2.6 series
> which support smart via libata.
> 
> Thanks
> Mike
> 
> 
> 
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Re: [Vserver] vservers and unionfs

[Herbert Poetzl]

On Wed, Jan 04, 2006 at 11:42:32PM +0200, Adrian Vasile wrote:
> Hi all,
> 
> i'm just starting with the ideea of vserver and i was thinking if
> anyone could point me towards some info related to using (configuring)
> vserver with unionfs and maybe give some hardware requirements
> (memory, procs, space) needed to run a couple :)

the probably strange question is, why would you want
to use unionfs, when you can have unifiation, which
usually suits the linux-vserver guest setup much
more than some overlay filesystem?

typical advantages over unionfs:

 - less overhead for access and modification
 - reduced cache usage (hardlinks)
 - can be re-unified at any time
 - does not require patches or modules

HTH,
Herbert

> ps:
> webber ~ # uname -a
> Linux webber 2.6.14-vs2.0.1-gentootest1 #1 SMP Wed Jan 4 18:41:47 EET 
> 2006 x86_64 Intel(R) Xeon(TM) CPU 3.20GHz GenuineIntel GNU/Linux
> with 400GB and 2GB ECC RAM, just finished building it
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Re: [Vserver] Re: how do i place a limit on cpu usage and ram usage by the vserver.

[Herbert Poetzl]

On Wed, Jan 04, 2006 at 10:42:04PM +0500, Mustafa wrote:
> Mustafa wrote:
> >
> >
> >>>i created the file. this is the file and there content.
> >>>
> >>>cat /usr/local/etc/vservers/sid2/flags
> >>>sched_hard
> >>>
> >>>cat /usr/local/etc/vservers/sid2/schedule.back
> >>
> >>well, it's called 'schedule' not schedule.back
> >>but the contents looks fine ...
> >i tried it using the name schedule but then backed it up.
> >
> >>
> >>>7
> >>>24
> >>>500
> >>>200
> >>>1000
> >>>dummy
> >>
> >>which kernel version/patches do you use, and
> >>what utils?
> >
> >i use kernel 2.6.14.14.
> >and util version  0.30.209
> >
> >
> >>>are these files in there correct location. also is the content ok. the
> >>>flags file was not present either so i made it. but it still does not
> >>>work
> >>
> >>after guest startup, what does  cat /proc/virtual//sched
> >>show?
> >>
> >
> >there is no such files.
> >the closest are
> 
> sorry it seems i forgot to start the vserver.
> here it is.
> [EMAIL PROTECTED]:~$ sudo cat /proc/virtual/49152/sched
> Password:
> Token:   201
> FillRate:  7
> Interval: 24
> TokensMin:   200
> TokensMax:  1000
> PrioBias:  0
> VaVaVoom:  0
> cpu 0: 32593 1677 63991
> 
> also i restarted the computer and now the spu limits atleast works.
> now a hint on how to limit ram usage (the vserver be allowed to use as 
> much swap as it wants just a limitewd amount of ram) left. any idea?
> any hint?

memory limits come in different flavours and
types (currently only hard limits are implemented)

virtual memory: VM, VML
physical pages: RSS, ANON

see http://linux-vserver.org/Resource+Limits for
details and names ...

HTH,
Herbert

> >cat /proc/virtual/status
> >cat /proc/virtual/info
> >
> >>best,
> >>Herbert
> >>
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[Vserver] Vservers and quotas

[Grzegorz Nosek]

Hello all,

I have a basic question regarding quota usage with vservers. My
scenario is more or less like this:

 - I have xid tagging enabled (UID24/GID24)

 - vserver with e.g. xid= has users with uids in range 000 -
999 (and several system ones but these need no quotas)

 - I'm not interested (at the moment at least) in per-context quotas,
only per-user ones

 - I need to manage the per-user quotas from within the vservers
(preferably, only the specified users should be available - their
files will be always created from within the vserver too so xid
tagging is an option)

 - I don't need quotas on the host

My question is: where do I configure the quotas? The host? The
vservers individually? Both?

Best regards,
 Grzegorz Nosek
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Re:[Vserver] 2.6.15 Vserver patchs

[Joel Soete]

> Hi All
>
> >From the conversation on the list, it would seem as if there are vs
> patch's for 2.6.15 kernel.
>
> Where would I down load these patch's
>

I used: 
(I only tested new patch-2.6.15-rc7-vs2.1.0.1.diff
but there are also patch-2.6.15-rc7-vs2.1.0.diff and stable
patch-2.6.15-rc7-vs2.0.1.diff)

Hth,
Joel

PS: rc7 was enough close to final release to apply one of those patch cleanly 
;-)

> I would like to test it as the 2.6.15 kernels are the first 2.6 series
> which support smart via libata.
>
> Thanks
> Mike
>
>
>
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> 

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Re: [Vserver] 2.6.15 Vserver patchs

[Michael S. Zick]

On Thu January 5 2006 05:38, Mike O'Connor wrote:
> Hi All
> 
> >From the conversation on the list, it would seem as if there are vs
> patch's for 2.6.15 kernel.
> 
> Where would I down load these patch's
>
Joel is running HP, pa-risc - I think he built his own patches for testing.
No clue about other hardware systems.

> 
> I would like to test it as the 2.6.15 kernels are the first 2.6 series
> which support smart via libata.
> 
> Thanks
> Mike
>
Another Mike
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[Vserver] 2.6.15 Vserver patchs

[Mike O'Connor]

Hi All

>From the conversation on the list, it would seem as if there are vs
patch's for 2.6.15 kernel.

Where would I down load these patch's

I would like to test it as the 2.6.15 kernels are the first 2.6 series
which support smart via libata.

Thanks
Mike



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Re: [Vserver] Virtualizing /proc/version

[Bodo Eggert]

On Wed, 4 Jan 2006, Herbert Poetzl wrote:
> On Wed, Jan 04, 2006 at 06:42:29PM +0100, Enrico Scholz wrote:
> > Herbert Poetzl <[EMAIL PROTECTED]> writes:

> > >> it would be nice when /proc/version could be virtualized
> > >> (e.g. using values from VCMD_set_vhi_name). Currently, it
> > >> reveals information about the real host (e.g. real os version,
> > >> buildhost/-user).
> > >
> > > hmm, looking at the code, I see:
> > >
> > > static int version_read_proc(char *page, char **start, off_t off,
> > >  int count, int *eof, void *data)
> > > ...
> > > const char vx_linux_banner[] =
> > > "Linux version %s (" LINUX_COMPILE_BY "@"
> > > LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") %s\n";
> > 
> > oops, I did not looked exactly at it and did not noticed that the
> > release is already virtualized.
> > 
> > But it would be nice when LINUX_COMPILE_BY/HOST and perhaps the compiler
> > and date would be virtualized/anonymized. I see two ways:
> 
> well, I did not consider that information critical (mainly
> because it just tells you where the kernel was compiled, 
> who did it and what compiler was used (which usually is
> fine and doesn't tell you anything about the host), but
> I did spend some thought on how to virtualize that, and
> I came to the conclusion that a hack like a) is not really
> appropriate, as it does not help, but b) might be an option
> ...

The most simple solution is to bind-mount an apropiate file, but if there 
are many "virtualized" entries, this would get messy.

-- 
Top 100 things you don't want the sysadmin to say:
51. YEEEHA!!!  What a CRASH!!!
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