Re: [CentOS] Possible to use multiple disk to bypass I/O wait?

2011-06-16 Thread Gordon Messmer
On 06/15/2011 07:04 PM, Emmanuel Noobadmin wrote: > Looking at some very sparse notes I made on the decision, I think what > tipped the choice was that both qcow2 and lvm added overheads, but lvm > was on the whole system i.e. the host has additional processing on > every i/o whereas qcow2 overhead

Re: [CentOS] Possible to use multiple disk to bypass I/O wait?

2011-06-16 Thread Emmanuel Noobadmin
On 6/16/11, Gordon Messmer wrote: > I think you were misinformed, or misled. That wouldn't be new for me as far as system administration is concerned :D >LVM should not present any > noticeable overhead on the host. Using "raw" files to back VMs presents > a significant overhead to guests; the

Re: [CentOS] OT: high static in server room

2011-06-16 Thread Christopher Chan
On Thursday, June 16, 2011 12:56 PM, John R Pierce wrote: > On 06/15/11 9:44 PM, Fajar Priyanto wrote: >> On Thu, Jun 16, 2011 at 11:28 AM, Mike Williams >> wrote: >>> "Low humidity would be my first guess. The relative humidity in your >>> server room should be between 50% +/- 10%. Too high and

Re: [CentOS] Odd issue with custom udev rule at boot

2011-06-16 Thread James Pearson
James A. Peltier wrote: > BTW: Can anyone try this to see if it is in fact a bug or not? > > Create a file called > > /etc/udev/rules.d/99-udev-override.rules > > that contains > > KERNEL=="tty[A-Z]*", GROUP="some_other_group_than_uucp", MODE="0660", > OPTIONS="last_rule" > > with mode of 06

Re: [CentOS] OT: high static in server room

2011-06-16 Thread Emmanuel Noobadmin
On 6/16/11, John R Pierce wrote: > actually, its 40-60%, I believe. and you should have a humidifier as > part of your A/C, since cooling air sucks the moisture out of it. I > would NOT rely on a fishtank to provide any significant humidity. Well, can't be so sure the fish tank won't do the j

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Tom H
On Wed, Jun 15, 2011 at 3:48 PM, Ron Blizzard wrote: > On Wed, Jun 15, 2011 at 2:37 PM, Tom H wrote: >> On Wed, Jun 15, 2011 at 5:58 AM, Ron Blizzard wrote: >>> >>> Mint/Ubuntu don't have an easy way to boot into the command line. >> >> To boot into "everything but X", you can append "text" to t

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Tom H
On Wed, Jun 15, 2011 at 6:04 PM, Craig White wrote: > On Jun 15, 2011, at 12:33 PM, Tom H wrote: >> On Wed, Jun 15, 2011 at 4:50 AM, Craig White wrote: >>> >>> Like RHEL/CentOS, Ubuntu LTS is absolutely appropriate for server use. >>> In fact, it's sort of refreshing to set up a new server that i

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Tom H
On Wed, Jun 15, 2011 at 6:08 PM, Craig White wrote: > > those days will be over soon as even fedora has now switched to upstart > > CentOS 7 (based on upstream 7) will be a vastly different beast CentOS 7 will most probably have systemd not upstart. ___

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Tom H
On Wed, Jun 15, 2011 at 4:47 PM, wrote: > > Or edit /etc/inittab to boot to runlevel 3, or just init 3 from the > command line (which you can reach via -f1) or I think you can > append 3 to the kernel line... That doesn't work on Debian/Ubuntu because runlevels 2-5 are the same.

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Scott Robbins
On Thu, Jun 16, 2011 at 07:17:38AM -0400, Tom H wrote: > On Wed, Jun 15, 2011 at 4:47 PM, wrote: > > > > Or edit /etc/inittab to boot to runlevel 3, or just init 3 from the > > command line (which you can reach via -f1) or I think you can > > append 3 to the kernel line... > > That doesn't work

Re: [CentOS] Slightly OT: First Time KVM and LVM on Centos

2011-06-16 Thread Les Mikesell
On 6/16/11 1:56 AM, Gordon Messmer wrote: > On 06/15/2011 05:52 PM, Ljubomir Ljubojevic wrote: >> Drawback is that such KVM guest is not as easy to move to another host >> if current host can not boot. Copying image and config files will be >> much faster. > > There is no reason that should be true

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread m . roth
Scott Robbins wrote: > On Thu, Jun 16, 2011 at 07:17:38AM -0400, Tom H wrote: >> On Wed, Jun 15, 2011 at 4:47 PM, wrote: >> > >> > Or edit /etc/inittab to boot to runlevel 3, or just init 3 from the >> > command line (which you can reach via -f1) or I think you >> > can append 3 to the kernel lin

Re: [CentOS] Config file semantics.

2011-06-16 Thread Brunner, Brian T.
centos-boun...@centos.org wrote: > On 06/15/2011 10:41 PM, Mike A. Harris wrote: >> Personally, I find that indenting config files by 3 spaces has a lot >> of advantages to indenting them by 4 spaces although conventional >> wisdom might suggest otherwise. Who's with me on this? > > Three is evil

Re: [CentOS] Odd issue with custom udev rule at boot

2011-06-16 Thread James A. Peltier
- Original Message - | James A. Peltier wrote: | | > BTW: Can anyone try this to see if it is in fact a bug or not? | > | > Create a file called | > | > /etc/udev/rules.d/99-udev-override.rules | > | > that contains | > | > KERNEL=="tty[A-Z]*", GROUP="some_other_group_than_uucp", | > MODE=

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Laurence Hurst
On Thu, Jun 16, 2011 at 02:15:28PM +0100, m.r...@5-cent.us wrote: > Scott Robbins wrote: > > On Thu, Jun 16, 2011 at 07:17:38AM -0400, Tom H wrote: > >> On Wed, Jun 15, 2011 at 4:47 PM, wrote: > >> > > >> > Or edit /etc/inittab to boot to runlevel 3, or just init 3 from the > >> > command line (w

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread m . roth
Laurence Hurst wrote: > On Thu, Jun 16, 2011 at 02:15:28PM +0100, m.r...@5-cent.us wrote: >> Scott Robbins wrote: >> > On Thu, Jun 16, 2011 at 07:17:38AM -0400, Tom H wrote: >> >> On Wed, Jun 15, 2011 at 4:47 PM, wrote: >> >> > >> >> > Or edit /etc/inittab to boot to runlevel 3, or just init 3 fr

Re: [CentOS] Slightly OT: First Time KVM and LVM on Centos

2011-06-16 Thread Gordon Messmer
On 06/16/2011 05:59 AM, Les Mikesell wrote: > What about the destination? Wouldn't it likely be harder to find a place to > put > the LV copy than space to write a file? Or can you copy back and forth? Yes, you can copy the content of a partition to a file and use it that way, or the reverse.

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Gordon Messmer
On 06/16/2011 06:15 AM, m.r...@5-cent.us wrote: > 2 isn't much used, except as a set of steps I think you're referring to Solaris' init. I'm not aware of any Linux init systems that start up by stepping through runlevels. ___ CentOS mailing list CentOS

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Les Mikesell
On 6/16/2011 10:43 AM, m.r...@5-cent.us wrote: > >> runlevels, traditionally, have not been defined (although the LSB has > > In Linux? I mean, runlevel 3 was multi-user text mode as far back as Sun > OS - I can remember putting things into 3, because X would > while () { >crash >respawn >

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Steve Clark
On 06/16/2011 12:41 PM, Les Mikesell wrote: On 6/16/2011 10:43 AM, m.r...@5-cent.us wrote: runlevels, traditionally, have not been defined (although the LSB has In Linux? I mean, runlevel 3 was multi-user text mode as far back as Sun OS - I can remember putting things into 3, because X would wh

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Steve Clark
On 06/16/2011 12:58 PM, Steve Clark wrote: On 06/16/2011 12:41 PM, Les Mikesell wrote: On 6/16/2011 10:43 AM,m.r...@5-cent.us wrote: runlevels, traditionally, have not been defined (although the LSB has In Linux? I mean, runlevel 3 was multi-user text mode as far back as Sun OS - I can rememb

Re: [CentOS] CentOS-6 Status updates

2011-06-16 Thread Geoff Galitz
No. I worked with both SCO and ISC linux in the late 80's and early 90's and run level 5 was used for X. In fact I think it was used also in DGUX for X. I don't know about ISC UNIX (aka Interactive UNIX) but SCO did not use run level 5 for X. I cut my teeth on System V UNIX including SC