Re: Question using LVM; trying to extend current LVM managed volu me g roup
That was it. I was really doing two steps. First, I was adding a new disk to the Linux system, which I failed to do properly. And two, I was extending an existing LVM managed filesystems which worked fine. I kind of feel like I asked tech support for help and the came by and plugged in my computer and said "try it now!" Thanks, -Original Message- From: Post, Mark K [mailto:[EMAIL PROTECTED] Sent: Thursday, June 17, 2004 15:45 To: [EMAIL PROTECTED] Subject: Re: Question using LVM; trying to extend current LVM managed volu me g roup You didn't indicate that you updated your dasd= parameter in your parmfile and re-ran zipl. Take a look at this: http://linuxvm.org/info/howtos/mkinitrd-notes.html Mark Post -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, June 17, 2004 6:19 PM To: [EMAIL PROTECTED] Subject: Question using LVM; trying to extend current LVM managed volume g roup I have an existing Linux system (non-VM) running SuSE Enterprise Server 8 in an LPAR using an IFL. My root file system and swap space are on unit 150e. I am using LVM to manage two other units 1611, and 1242 and I have /home, /var/and /opt filesystems mounted on volume group "system" in my /etc/fstab < snip > /dev/system/home/home reiserfs defaults 1 2 /dev/system/opt /optreiserfs defaults 1 2 /dev/system/var /varreiserfs defaults 1 2 < snip > I am trying to extend the logical volumes assigned to /var, /home/ and /opt to get more space I was assigned a drive unit by my storage administrator, and I made sure the unit was varied offline on all LPARs I use the 'echo "add device range=113e" >>/proc/dasd/device' command to assign another unit to my system The "cat /proc/dasd/devices" shows the unit available. I ran dasdfmt, dasdfmt, and mkreiserfs, to prepare the new drive I ran "pvcreate /dev/dasdd1" sans quotes to create physical volume to LVM I ran "vgextend -v system /dev/dasdd1" sans quotes to get the disk defined to LVM I ran "lvextend /dev/system/opt +200" sans quotes to extend the file system (also ran it for /var and /home) I ran ""resize_reiserfs -f /dev/system/opt" to resize the filesystem (also ran it for /var and /home) When I ran df -k everything looks great until I cycle Linux, Then I receive the following message on the HMC and I cannot continue >>> Scanning for LVM volume groups... >>> lvm-mp: allocating 42 lowmem entries at 01316000 >>> LVM version 1.0.5+(mp-v6c)(22/07/2002) module loaded >>> vgscan -- reading all physical volumes (this may take a >>> while...) >>> vgscan -- ERROR "vg_read_with_pv_and_lv(): current PV" can't get data of >>>volume group "system" from physical volume(s) >>> Unable to find swap-space signature >>> vgscan -- "/etc/lvmtab" and /etc/lvmtab.d" successfully created >>> vgscan -- WARNING: This is program does not do a VGDA backup of >>> your >>>volume group >>> Activating LVM volume groups... >>> vgchange -- no volume groups found >>> ..done >>> Activating swap-devices in /etc/fstab... >>> ..failed >>> Checking file systems... >>> fsck 1.28 (31-Aug-2002) >>> /dev/dasda1: clean, 82746/840320 files, 395657/1679988 blocks >>> fsck failed. Please repair manually and reboot. The root >>> file system is currently mounted read-only. To remount it >>> read-write do: >>>bash# mount -n -o remount,rw / >>> Attention: Only CONTROL-D will reboot the system in this >>> maintenance mode. shutdown or reboot will not work. >>> Give root password to login: I read and searched through documents, redpapers, and e-mails I could find dealing with LVM, but I can't the step I am missing. My attempts to run 'fsck' manually have not been successful. What I end up doing is doing a full image restore from backups I took before I tried to expand the filesystem and trying something else. Can someone point me in the right direction, or identify the step that I am missing. TIA -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Question using LVM; trying to extend current LVM managed volu me g roup
You didn't indicate that you updated your dasd= parameter in your parmfile and re-ran zipl. Take a look at this: http://linuxvm.org/info/howtos/mkinitrd-notes.html Mark Post -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, June 17, 2004 6:19 PM To: [EMAIL PROTECTED] Subject: Question using LVM; trying to extend current LVM managed volume g roup I have an existing Linux system (non-VM) running SuSE Enterprise Server 8 in an LPAR using an IFL. My root file system and swap space are on unit 150e. I am using LVM to manage two other units 1611, and 1242 and I have /home, /var/and /opt filesystems mounted on volume group "system" in my /etc/fstab < snip > /dev/system/home/home reiserfs defaults 1 2 /dev/system/opt /optreiserfs defaults 1 2 /dev/system/var /varreiserfs defaults 1 2 < snip > I am trying to extend the logical volumes assigned to /var, /home/ and /opt to get more space I was assigned a drive unit by my storage administrator, and I made sure the unit was varied offline on all LPARs I use the 'echo "add device range=113e" >>/proc/dasd/device' command to assign another unit to my system The "cat /proc/dasd/devices" shows the unit available. I ran dasdfmt, dasdfmt, and mkreiserfs, to prepare the new drive I ran "pvcreate /dev/dasdd1" sans quotes to create physical volume to LVM I ran "vgextend -v system /dev/dasdd1" sans quotes to get the disk defined to LVM I ran "lvextend /dev/system/opt +200" sans quotes to extend the file system (also ran it for /var and /home) I ran ""resize_reiserfs -f /dev/system/opt" to resize the filesystem (also ran it for /var and /home) When I ran df -k everything looks great until I cycle Linux, Then I receive the following message on the HMC and I cannot continue >>> Scanning for LVM volume groups... >>> lvm-mp: allocating 42 lowmem entries at 01316000 >>> LVM version 1.0.5+(mp-v6c)(22/07/2002) module loaded >>> vgscan -- reading all physical volumes (this may take a >>> while...) >>> vgscan -- ERROR "vg_read_with_pv_and_lv(): current PV" can't get data of >>>volume group "system" from physical volume(s) >>> Unable to find swap-space signature >>> vgscan -- "/etc/lvmtab" and /etc/lvmtab.d" successfully created >>> vgscan -- WARNING: This is program does not do a VGDA backup of >>> your >>>volume group >>> Activating LVM volume groups... >>> vgchange -- no volume groups found >>> ..done >>> Activating swap-devices in /etc/fstab... >>> ..failed >>> Checking file systems... >>> fsck 1.28 (31-Aug-2002) >>> /dev/dasda1: clean, 82746/840320 files, 395657/1679988 blocks >>> fsck failed. Please repair manually and reboot. The root >>> file system is currently mounted read-only. To remount it >>> read-write do: >>>bash# mount -n -o remount,rw / >>> Attention: Only CONTROL-D will reboot the system in this >>> maintenance mode. shutdown or reboot will not work. >>> Give root password to login: I read and searched through documents, redpapers, and e-mails I could find dealing with LVM, but I can't the step I am missing. My attempts to run 'fsck' manually have not been successful. What I end up doing is doing a full image restore from backups I took before I tried to expand the filesystem and trying something else. Can someone point me in the right direction, or identify the step that I am missing. TIA -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Question using LVM; trying to extend current LVM managed volume g roup
You mentioned that you added the device before extending your volume, but did you take any steps to ensure that the new dasd is found when the machine boots? > I use the 'echo "add device range=113e" >>/proc/dasd/device' command to > assign another unit to my system Normally you would add the new device, onto the existing device range on this line in /etc/zipl.conf: atropos:/etc# grep param /etc/zipl.conf parameters="dasd=0250-0253 root=/dev/dasdb1 vmpoff=LOGOFF" Then you would run mkinitrd and zipl, before booting. You can probably do all of that stuff in "maintenance mode". --- Josh Heinze [EMAIL PROTECTED] Systems Administrator 773.834.8336 NSIT - DCS - Systems Engineering and Administration The University of Chicago security = 1/convenience On Thu, 17 Jun 2004 [EMAIL PROTECTED] wrote: > I have an existing Linux system (non-VM) running SuSE Enterprise Server 8 in > an LPAR using an IFL. My root file system and swap space are on unit 150e. > I am using LVM to manage two other units 1611, and 1242 and I have /home, > /var/and /opt filesystems mounted on volume group "system" in my /etc/fstab > > < snip > > /dev/system/home/home reiserfs defaults 1 2 > /dev/system/opt /optreiserfs defaults 1 2 > /dev/system/var /varreiserfs defaults 1 2 > < snip > > > I am trying to extend the logical volumes assigned to /var, /home/ and /opt > to get more space > > I was assigned a drive unit by my storage administrator, and I made sure the > unit was varied offline on all LPARs > > I use the 'echo "add device range=113e" >>/proc/dasd/device' command to > assign another unit to my system > > The "cat /proc/dasd/devices" shows the unit available. > > I ran dasdfmt, dasdfmt, and mkreiserfs, to prepare the new drive > > I ran "pvcreate /dev/dasdd1" sans quotes to create physical volume to LVM > I ran "vgextend -v system /dev/dasdd1" sans quotes to get the disk defined > to LVM > I ran "lvextend /dev/system/opt +200" sans quotes to extend the file system > (also ran it for /var and /home) > I ran ""resize_reiserfs -f /dev/system/opt" to resize the filesystem (also > ran it for /var and /home) > > When I ran df -k everything looks great until I cycle Linux, > > Then I receive the following message on the HMC and I cannot continue > > >>> Scanning for LVM volume groups... > > >>> lvm-mp: allocating 42 lowmem entries at 01316000 > > >>> LVM version 1.0.5+(mp-v6c)(22/07/2002) module loaded > > >>> vgscan -- reading all physical volumes (this may take a while...) > > >>> vgscan -- ERROR "vg_read_with_pv_and_lv(): current PV" can't get > data of > >>>volume group "system" from physical volume(s) > > >>> Unable to find swap-space signature > > >>> vgscan -- "/etc/lvmtab" and /etc/lvmtab.d" successfully created > > >>> vgscan -- WARNING: This is program does not do a VGDA backup of your > > >>>volume group > > >>> Activating LVM volume groups... > > >>> vgchange -- no volume groups found > > >>> ..done > > >>> Activating swap-devices in /etc/fstab... > > >>> ..failed > > >>> Checking file systems... > > >>> fsck 1.28 (31-Aug-2002) > > >>> /dev/dasda1: clean, 82746/840320 files, 395657/1679988 blocks > > >>> fsck failed. Please repair manually and reboot. The root > > >>> file system is currently mounted read-only. To remount it > > >>> read-write do: > > >>>bash# mount -n -o remount,rw / > > >>> Attention: Only CONTROL-D will reboot the system in this > > >>> maintenance mode. shutdown or reboot will not work. > > >>> Give root password to login: > > > I read and searched through documents, redpapers, and e-mails I could find > dealing with LVM, but I can't > the step I am missing. My attempts to run 'fsck' manually have not been > successful. What I end up doing > is doing a full image restore from backups I took before I tried to expand > the filesystem and trying something else. > > Can someone point me in the right direction, or identify the step that I am > missing. > > TIA > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Question using LVM; trying to extend current LVM managed volume g roup
I have an existing Linux system (non-VM) running SuSE Enterprise Server 8 in an LPAR using an IFL. My root file system and swap space are on unit 150e. I am using LVM to manage two other units 1611, and 1242 and I have /home, /var/and /opt filesystems mounted on volume group "system" in my /etc/fstab < snip > /dev/system/home/home reiserfs defaults 1 2 /dev/system/opt /optreiserfs defaults 1 2 /dev/system/var /varreiserfs defaults 1 2 < snip > I am trying to extend the logical volumes assigned to /var, /home/ and /opt to get more space I was assigned a drive unit by my storage administrator, and I made sure the unit was varied offline on all LPARs I use the 'echo "add device range=113e" >>/proc/dasd/device' command to assign another unit to my system The "cat /proc/dasd/devices" shows the unit available. I ran dasdfmt, dasdfmt, and mkreiserfs, to prepare the new drive I ran "pvcreate /dev/dasdd1" sans quotes to create physical volume to LVM I ran "vgextend -v system /dev/dasdd1" sans quotes to get the disk defined to LVM I ran "lvextend /dev/system/opt +200" sans quotes to extend the file system (also ran it for /var and /home) I ran ""resize_reiserfs -f /dev/system/opt" to resize the filesystem (also ran it for /var and /home) When I ran df -k everything looks great until I cycle Linux, Then I receive the following message on the HMC and I cannot continue >>> Scanning for LVM volume groups... >>> lvm-mp: allocating 42 lowmem entries at 01316000 >>> LVM version 1.0.5+(mp-v6c)(22/07/2002) module loaded >>> vgscan -- reading all physical volumes (this may take a while...) >>> vgscan -- ERROR "vg_read_with_pv_and_lv(): current PV" can't get data of >>>volume group "system" from physical volume(s) >>> Unable to find swap-space signature >>> vgscan -- "/etc/lvmtab" and /etc/lvmtab.d" successfully created >>> vgscan -- WARNING: This is program does not do a VGDA backup of your >>>volume group >>> Activating LVM volume groups... >>> vgchange -- no volume groups found >>> ..done >>> Activating swap-devices in /etc/fstab... >>> ..failed >>> Checking file systems... >>> fsck 1.28 (31-Aug-2002) >>> /dev/dasda1: clean, 82746/840320 files, 395657/1679988 blocks >>> fsck failed. Please repair manually and reboot. The root >>> file system is currently mounted read-only. To remount it >>> read-write do: >>>bash# mount -n -o remount,rw / >>> Attention: Only CONTROL-D will reboot the system in this >>> maintenance mode. shutdown or reboot will not work. >>> Give root password to login: I read and searched through documents, redpapers, and e-mails I could find dealing with LVM, but I can't the step I am missing. My attempts to run 'fsck' manually have not been successful. What I end up doing is doing a full image restore from backups I took before I tried to expand the filesystem and trying something else. Can someone point me in the right direction, or identify the step that I am missing. TIA -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Story on Marist
See: http://www.linuxplanet.com/linuxplanet/reports/5448/1/ Sigh... we still get references to "Linux source code for the OS/390" and "ZOS-based mainframes". -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Gentoo Linux for S/390
Anybody heard from the Gentoo guys about their S/390 Port? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: TRACKZVM 64 bit / zVM PERF ?
> List Linux Guests > Show Total CPU used % > Show Total Memory used (Real/Paging) > Show CPU Usage of a Linux Guest > Show Memory Usage of a Linux Guest > Show All Disks > Show Disk I/O rate for a given Disk IMHO, there's two problems here: capacity planning for real resources (ie making sure you have enough real horsepower to deliver to the virtualized Linux guests), and monitoring how Linux uses the resources it's given. If you want information about VM resource utilization only, the VM Performance Toolkit will supply the real resource utilization information pretty well, and it's fairly easy to learn to use. PerfKit can also take data from Linux guests, but as others have observed, the usefulness of some of that data is limited. Nagios, BB, MRTG and friends can show you some information about how Linux is allocating the resources it gets internally, but it won't show you much about real resource utilization. The VM SNMPD doesn't really have enough information available to be useful. ESALPS makes a pretty good matchup between the two problems. There are a couple of things I'd like to see done differently in it, but hey, I'm not the author. PerfKit's pretty reasonable for basic capacity planning. Depends on your budget and what you need worst. -- db -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
TRACKZVM 64 bit / zVM PERF ?
We are looking around for some basic VM performance stats. We tried grabbing the TRACKZVM VMARC file from http://sinenomine.net/downloads/trackzvm.php After installing TRACKZVM and running "T" we get: "Unsupported CP version z/VM Version 4 Release 4.0, service level 0301 (64-bit)" I found some docs which said that TRACKZVM would not work on 64 bit boxes. so it looks like TRACK is out for now unless someone has a pointer to a version which will work with our box. So, Does someone know some CMS/CP scripts/commands which would give us some basic performance stats for z/VM? Something like: List Linux Guests Show Total CPU used % Show Total Memory used (Real/Paging) Show CPU Usage of a Linux Guest Show Memory Usage of a Linux Guest Show All Disks Show Disk I/O rate for a given Disk My experience is more with the Linux side of things rather than VM. Thanks, Mike -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
On Thu, 2004-06-17 at 12:58, Ranga Nathan wrote: > Interesting. So it seems that if you want to track CPU and memory > performance you have to do it at the aggregate VM level. Or use Barton's ESALPS product, which is designed to do exactly that. > That makes it > difficult to size the guests. How does one know how much resource to give > to a guest. I do understand that if the guest is under-performing then you > give it some more. But by how much? My general rule of thumb is to start with small guests--128MB or so. Bump up their storage as necessary until they are just-barely-into-swap in normal operation. Put your swap in VDISK, or at least your high-priority swap. That way when you *do* swap it isn't actually that much of a performance hit. > Very intersting questions...! The thing NOT to do is start out with huge Linux guests. A 512MB guest will usually perform worse than a 128MB guest on a busy system, because the bigger guest is always having to wait for VM to page his storage back in. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
Sizing is actually pretty easy. What Barton is getting at is that when Linux reports performance numbers, it does so on the assumption that it owns the hardware. When running under VM (or LPAR), it doesn't so you need something that understands VM's influence and can adjust the numbers that Linux reports. ESALPS can do this. As to adjusting performance knobs, it's no different than any other operating system. Small, incremental adjustments until the natives stop complaining. If they always complain, that's another issue. :) On Thu, 2004-06-17 at 12:58, Ranga Nathan wrote: > Interesting. So it seems that if you want to track CPU and memory > performance you have to do it at the aggregate VM level. That makes it > difficult to size the guests. How does one know how much resource to give > to a guest. I do understand that if the guest is under-performing then you > give it some more. But by how much? > Very intersting questions...! > __ > Ranga Nathan / CSG > Systems Programmer - Specialist; Technical Services; > BAX Global Inc. Irvine-California > Tel: 714-442-7591 Fax: 714-442-2840 > > > > > > Adam Thornton <[EMAIL PROTECTED]> > > Sent by: Linux on 390 Port <[EMAIL PROTECTED]> > 06/17/2004 09:14 AM > Please respond to Linux on 390 Port > > To: [EMAIL PROTECTED] > cc: > Subject:Re: Performance Monitoring for Linux > > > On Thu, 2004-06-17 at 10:29, Barton Robinson wrote: > > I am unaware of any product other than ESALPS on the market > > that is either aware of this problem or addresses > > it. Linux monitors do NOT have the ability to correct this > > problem - they are unaware they are virtualized. > > They still have some utility: their absolute numbers--packets per > second, for instance--are accurate. And measurements of Linux processes > vis-a-vis each other (i.e. "Samba appears to be eating about three times > as much storage and four times as much CPU as named") are reasonably > accurate, although that fluctuates a lot in any Linux system, > virtualized or not. > > However, yes, as Barton says, anything that measures performance > relative to the Linux image capacity is basically useless, since > effectively the speed of the machine is varying wildly as VM does its > thing (remember that what Linux considers core storage may actually be > out in VM's page space somewhere, so not just CPU performance but memory > access times are enormously variable). So it tells you nothing that > some process is consuming X% of the Linux image's CPU unless you're > either running the image at a fixed priority--which I hope you're > not--or you have some way to correlate that with what VM says the image > itself is doing. > > Adam > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 -- Rich Smrcina Illustro Systems International rsmrcina at illustro.com Catch the WAVV! Update your zSeries skills in 4 days. WAVV 2005 in Colorado Springs, CO May 20-24, 2005 For details see http://www.wavv.org -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
Interesting. So it seems that if you want to track CPU and memory performance you have to do it at the aggregate VM level. That makes it difficult to size the guests. How does one know how much resource to give to a guest. I do understand that if the guest is under-performing then you give it some more. But by how much? Very intersting questions...! __ Ranga Nathan / CSG Systems Programmer - Specialist; Technical Services; BAX Global Inc. Irvine-California Tel: 714-442-7591 Fax: 714-442-2840 Adam Thornton <[EMAIL PROTECTED]> Sent by: Linux on 390 Port <[EMAIL PROTECTED]> 06/17/2004 09:14 AM Please respond to Linux on 390 Port To: [EMAIL PROTECTED] cc: Subject:Re: Performance Monitoring for Linux On Thu, 2004-06-17 at 10:29, Barton Robinson wrote: > I am unaware of any product other than ESALPS on the market > that is either aware of this problem or addresses > it. Linux monitors do NOT have the ability to correct this > problem - they are unaware they are virtualized. They still have some utility: their absolute numbers--packets per second, for instance--are accurate. And measurements of Linux processes vis-a-vis each other (i.e. "Samba appears to be eating about three times as much storage and four times as much CPU as named") are reasonably accurate, although that fluctuates a lot in any Linux system, virtualized or not. However, yes, as Barton says, anything that measures performance relative to the Linux image capacity is basically useless, since effectively the speed of the machine is varying wildly as VM does its thing (remember that what Linux considers core storage may actually be out in VM's page space somewhere, so not just CPU performance but memory access times are enormously variable). So it tells you nothing that some process is consuming X% of the Linux image's CPU unless you're either running the image at a fixed priority--which I hope you're not--or you have some way to correlate that with what VM says the image itself is doing. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
On Thu, 2004-06-17 at 10:29, Barton Robinson wrote: > I am unaware of any product other than ESALPS on the market > that is either aware of this problem or addresses > it. Linux monitors do NOT have the ability to correct this > problem - they are unaware they are virtualized. They still have some utility: their absolute numbers--packets per second, for instance--are accurate. And measurements of Linux processes vis-a-vis each other (i.e. "Samba appears to be eating about three times as much storage and four times as much CPU as named") are reasonably accurate, although that fluctuates a lot in any Linux system, virtualized or not. However, yes, as Barton says, anything that measures performance relative to the Linux image capacity is basically useless, since effectively the speed of the machine is varying wildly as VM does its thing (remember that what Linux considers core storage may actually be out in VM's page space somewhere, so not just CPU performance but memory access times are enormously variable). So it tells you nothing that some process is consuming X% of the Linux image's CPU unless you're either running the image at a fixed priority--which I hope you're not--or you have some way to correlate that with what VM says the image itself is doing. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Performance Monitoring for Linux
PLEASE PLEASE be aware that the CPU numbers you get from ANY linux monitor when under z/VM or VMWARE or any other virtualization are GROSSLY WRONG when you need them most. Please see "HTTP://velocitysoftware.com/present/prorate/"; for a better explanation. I am unaware of any product other than ESALPS on the market that is either aware of this problem or addresses it. Linux monitors do NOT have the ability to correct this problem - they are unaware they are virtualized. >From: Ranga Nathan <[EMAIL PROTECTED]> > >I installed Nagios for host and service monitoring. It is >working fine. Good. Now I need something for performance >monitoring - stats, charting and the works. > >My teenager directed me to Cacti >(http://www.raxnet.net/products/cacti/download_cacti.php). > >I downloaded it but have not installed it yet.. > >Meanwhile there is pressure to install some 'proprietary' and >'closed' product. I am reluctant to install 'closed' software >when there is a better alternative. > >I would like to hear from the public on what worked best for you. > >Thanks for sharing the info. > >__ >Ranga Nathan / CSG >Systems Programmer - Specialist; Technical Services; >BAX Global Inc. Irvine-California >Tel: 714-442-7591 Fax: 714-442-2840 > "If you can't measure it, I'm Just NOT interested!"(tm) // Barton Robinson - CBW Internet: [EMAIL PROTECTED] Velocity Software, IncMailing Address: 196-D Castro Street P.O. Box 390640 Mountain View, CA 94041 Mountain View, CA 94039-0640 VM Performance Hotline: 650-964-8867 Fax: 650-964-9012 Web Page: WWW.VELOCITY-SOFTWARE.COM // -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Data warehouse on Z/LINUX
Are there any Free data warehouse on Z/Linux??? - This message and its attachments may contain privileged and confidential information. If you are not the intended recipient(s), you are prohibited from printing, forwarding, saving or copying this email. If you have received this e-mail in error, please immediately notify the sender and delete this e-mail and its attachments from your computer. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
Another good package which comes with SuSe SLES8 is GNUPLOT. http://www.gnuplot.info Regards, Mike Fry Capacity Planning & SAS Consultant Performance & Capacity Support ISS/Mainframe Infrastructure, Enable Tel c/w: 2000 x4813 Tel ext: 01565 614813 Internet communications are not secure and therefore the Barclays Group does not accept legal responsibility for the contents of this message. Although the Barclays Group operates anti-virus programmes, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the Barclays Group. Replies to this email may be monitored by the Barclays Group for operational or business reasons. Barclays Bank PLC. Authorised and regulated by the Financial Services Authority. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
Thanks. Cacti is an improved version also takes feeds and charts OpenNMS seems to be equivalent to Nagios which I have installed and am happy with. Nagios was a bit difficult to implement but the Perl-based architechture made it easier to trouble-shoot. __ Ranga Nathan / CSG Systems Programmer - Specialist; Technical Services; BAX Global Inc. Irvine-California Tel: 714-442-7591 Fax: 714-442-2840 Rich Smrcina <[EMAIL PROTECTED]> Sent by: Linux on 390 Port <[EMAIL PROTECTED]> 06/16/2004 07:01 PM Please respond to Linux on 390 Port To: [EMAIL PROTECTED] cc: Subject:Re: Performance Monitoring for Linux Take a look at larrd or mrtg. They perform the graphing function, you (or Nagios) have to provide the numbers. On Wed, 2004-06-16 at 19:27, Ranga Nathan wrote: > I installed Nagios for host and service monitoring. It is working fine. > Good. > Now I need something for performance monitoring - stats, charting and the > works. > > My teenager directed me to Cacti > (http://www.raxnet.net/products/cacti/download_cacti.php). > > I downloaded it but have not installed it yet.. > > Meanwhile there is pressure to install some 'proprietary' and 'closed' > product. I am reluctant to install 'closed' software when there is a > better alternative. > > I would like to hear from the public on what worked best for you. > > Thanks for sharing the info. > > > __ > Ranga Nathan / CSG > Systems Programmer - Specialist; Technical Services; > BAX Global Inc. Irvine-California > Tel: 714-442-7591 Fax: 714-442-2840 > > -- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 -- Rich Smrcina Illustro Systems International rsmrcina at illustro.com Catch the WAVV! Update your zSeries skills in 4 days. WAVV 2005 in Colorado Springs, CO May 20-24, 2005 For details see http://www.wavv.org -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Performance Monitoring for Linux
Have you tried OpenNMS? (opennms.org). David Ranga Nathan <[EMAIL PROTECTED]To: [EMAIL PROTECTED] bal.com> cc: Sent by: Linux Subject: Performance Monitoring for Linux on 390 Port <[EMAIL PROTECTED] ARIST.EDU> 06/17/2004 01:27 AM Please respond to Linux on 390 Port I installed Nagios for host and service monitoring. It is working fine. Good. Now I need something for performance monitoring - stats, charting and the works. My teenager directed me to Cacti (http://www.raxnet.net/products/cacti/download_cacti.php). I downloaded it but have not installed it yet.. Meanwhile there is pressure to install some 'proprietary' and 'closed' product. I am reluctant to install 'closed' software when there is a better alternative. I would like to hear from the public on what worked best for you. Thanks for sharing the info. __ Ranga Nathan / CSG Systems Programmer - Specialist; Technical Services; BAX Global Inc. Irvine-California Tel: 714-442-7591 Fax: 714-442-2840 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
VM & VSE & linux/390 Employment Web Page
Greetings; (Posted to VMESA-L and VSE-L and LINUX-390) - - Now in its sixth year! - - Includes VSE and linux/390! I have set up a public service web page at http://www.eskimo.com/~wix/vm/ for posting positions available and wanted for VM, VSE and linux/390. Please visit the web page for more information and feel free to send me any info you would like to have posted. Please make VM or VSE or linux/390 the first word in the subject. Questions and comments welcome! (Text or html OK. No java, gifs, .DOC, etc. NO RESUMES or CVs!) === Please check the web pages for === === examples before sending your ad! === Good luck, Dennis VM & VSE & linux/390 Positions Available last updated May 22. VM & VSE & linux/390 Positions Wanted last updated May 22. 43182 06/17/04 00:05:03 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
