Re: LVM thin provisioning

as a remote virtual block device (or file system, or object store) in the first place. On Fri, Dec 6, 2013 at 10:38 PM, Christian Paro wrote: > Crazy thought... > > ...you could create a Linux LPAR or VM that manages a large LVM pool with > thin-provisioned volumes, and export

Re: LVM thin provisioning

Crazy thought... ...you could create a Linux LPAR or VM that manages a large LVM pool with thin-provisioned volumes, and export these volumes as filesystems over NFS or as block devices with AoE. Then you could build your "thin" Linux VM guests with a small boot volume (possibly even a read-only

Re: Dynamically removing memory - bug?

...of course, the same file says that the removable flag in sysfs should only be one when every memory segment in the block is removable, so it's possible this is a bug in the reporting of the removability of that memory. On Fri, Dec 6, 2013 at 10:24 PM, Christian Paro wrote: > Wit

Re: Dynamically removing memory - bug?

With memory hotplug, the removal of hot-plugged memory is also condition on there not being and "unmovable" memory pages within the memory region that you're trying to remove - with it returning an EBUSY error if it is not presently able to offline that region. >From the memory-hotplug.txt in the

Re: Good tutorial on regexp with bash

I would add that in Bash, you need to watch for the change in regex-quoting behavior between version 3.1 and 3.2: http://stackoverflow.com/questions/218156/bash-regex-with-quotes ...if you are writing scripts that need to support both older and newer versions of Bash, though, you can use the "com

Re: Kernel ring buffer date stams missing

Of course, if you don't need the time stamps for early boot, you can turn them on at runtime through the /sys filesystem: http://elinux.org/Debugging_by_printing#Printk_Timestamps On Fri, Apr 20, 2012 at 4:57 PM, Christian Paro wrote: > Just a guess here, but maybe the s390x kernel for

Re: Kernel ring buffer date stams missing

Just a guess here, but maybe the s390x kernel for SLES 11 SP1 was compiled with CONFIG_PRINTK_TIME disabled, while the x86-64 kernel had the same option enabled? I do see those time-offset numbers at the beginning of output from other kernels on s390x, so I don't think it's a difference inherent t

Re: Extending a DASD partition

The fdasd partitioning tool only alters the disk's partition table, which is outside of the partition being resized - making it suitable for extending a partition (assuming there is free formatted space after it) or shrinking a partition (assuming you have already shrunk the filesystem within it).

Re: Extending a DASD partition

t would handle the symlinks. > > Kind regards, > Florian > > > > > > On Wed, Mar 28, 2012 at 5:06 PM, Christian Paro >wrote: > > > Assuming there's free space following your existing partition, you can > use > > fdasd to increase the partition size (

Re: Extending a DASD partition

Assuming there's free space following your existing partition, you can use fdasd to increase the partition size (just make sure you keep the same starting cylinder), and then resize your filesystem with resize2fs after the partition has been extended. On Wed, Mar 28, 2012 at 10:50 AM, Florian Bile

Re: Scientific Linux

Might you mean Gentoo? http://dev.gentoo.org/~vapier/s390/ On Fri, Jan 27, 2012 at 3:04 PM, John Campbell wrote: > Cameron Seay wrote: > > What would I have to do to get a distro to run on z/VM? I want to run > > Scientific Linux, but there does not appear to be a version for VM. Do I > > nee

Re: Redhat equivalent of Yast?

As far as those separately-invoked tools are concerned, you're looking for `yum` as the Redhat equivalent to YAST for software package management, and `system-config-*` for the other kinds of configuration that you could access through YAST on SuSE. Redhat's approach does, in my experience, impose

Re: FICON-Attached 3590 Tape Drives Not Detected

Have you tries using the `cio_ignore` command to make sure the channels your tapes are attached to aren't blacklisted? For example: cio_ignore -r 1500 Your tape drives may currently be masked from being detected. For more info on cio_ignore, see What's new in RHEL 6 for Linux on System z

Re: ssh tunnel & NFS mounting

If all you want is a convenient way to (securely) mount a remote Linux file system to edit files (or copy them to a local location to edit them off-line), then there are two very easy ways to do that: For a Linux client, SSHFS: http://fuse.sourceforge.net/sshfs.html For Windows client, WinSCP: ht

Re: VDISK Swap

You can use SWAPGEN if you're IPLing CMS before Linux, or (if you prefer an all-Linux solution) use an init script to perform the mkswap and swapon the disks (rather than putting them in /etc/fstab). On Wed, Oct 5, 2011 at 3:30 PM, Dean, David (I/S) wrote: > Rob, thanks, but I did define it in li

Re: DASD assignment different between SLES10 and SLES11

On the readlink example, the "$" indicates a variable. So in a script you could set vdev='015f' and then reference that value as ${vdev}. Or you could just hard code in the "015f". ...also note that the by-path disk nodes always zero-pad the beginning of a virtual device number, so it'll be four c

Re: DASD assignment different between SLES10 and SLES11

Is this for a program or fstab entry which is expecting that disk to always appear at /dev/dasdp? Because if you can edit your source, it would be safer to refer to your disks by path (such as /dev/disk/by-path/ccw-0.0.0154) rather than by their dasd[a-z][a-z]* names. The path will always correspo

Re: Fedora 15 on z/VM

back to slower media. On Fri, Aug 5, 2011 at 7:14 PM, Rob van der Heij wrote: > On Fri, Aug 5, 2011 at 8:55 PM, Christian Paro > wrote: > > > ...also setting swap priorities such that your (fast) VDisk swap space > will > > be used before any TDisk swap space is used, and

Re: Fedora 15 on z/VM

FWIW, if you use an init scrit rather than SWAPGEN to handle swap creation on VDisk, this also frees you from having to IPL CMS prior to booting Linux - shaving a little time off of the boot process. It also allows you to easily use one script for all your systems while defining different VDisk/TD

Re: Enabling/Disabling IPv6 Autoconf on SLES

t is limited to Layer-2 VSwitches and GuestLANs. Layer-3 VSwitches are documented as IPv4 only: http://www.vm.ibm.com/networking/ipv6/ipv6tabl.html On Thu, May 5, 2011 at 2:14 PM, Mark Post wrote: > >>> On 5/5/2011 at 12:49 PM, Christian Paro > wrote: > -snip- > > Putti

Re: Enabling/Disabling IPv6 Autoconf on SLES

autoconfigured > > network addresses when they or the network service is restarted without > > rebooting the Linux? > > Guessing this is in the distributor's network start/stop/restart > logic. In my limitted experience, I can always manually add a V6 > address. No reb

Enabling/Disabling IPv6 Autoconf on SLES

It is possible on RHEL systems to disable IPv6 autoconfiguration either system-wide (in /etc/sysconfig/network) or or specific interface (in that interface's /etc/sysconfig/network-scripts/ifcfg-* file) using the IPV6_AUTOCONF=[yes/no] statement. I have been looking for an equivalent mechanism in

Re: Adding a new 3390 disk

Yes. chccwdev -e [the new disk's virtual device address] lsdasd ...the first will bring the disk online, the second will show you the device address it is attached to (in case you're using the /dev/dasd[a-z]* paths instead of something like /dev/disk/by-path/ccw-0.0.[vdev]) On Thu, Apr 21, 2011

Re: FBA/SCSI vs ECKD zLinux on VM

A full set of benchmarks for different disk technologies with z/VM: http://www.vm.ibm.com/perf/reports/zvm/html/520dasd.html On Fri, Mar 11, 2011 at 12:57 PM, Donald Russell wrote: > I currently have a dozen or so RHEL 5.6 zLinux running on multiple VM 6.1 > (well, 5, but 6.1 RSN), on z10 proces

Re: Cloning question for zLinux

What do you get from: lsdasd file -s /dev/disk/by-path/ccw-0.0.020e file -s /dev/disk/by-path/ccw-0.0.020e-part1 On Wed, Mar 9, 2011 at 1:24 PM, Gary Detro wrote: > Sorry I didn't make it clear the 20f and 20e are not he same disk. > > link linux73 201 20f mr > > link linux77 201 20e mr > > >

Re: Using 2 NIC addresses to different networks on different VSWITCHes

> issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake > Life Insurance Company(r), Mid-West National Life Insurance Company of > TennesseeSM and The MEGA Life and Health Insurance Company.SM > > > > > -Original Message- > > From: Linux on 390 P

Re: Using 2 NIC addresses to different networks on different VSWITCHes

A system can only have one default interface. But it should only be falling back to default when one of the more specific routes have not been met. So if I have a system like this: # route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 9.1.2.3 * 255.255.255.128 U 0

Re: vswitch name in sysfs

IC is desired would depend on the user's intentions in the fringe case that the two differ. On Thu, Jan 20, 2011 at 12:53 PM, Steffen Maier wrote: > Not encouraging to make procedures dependent on vswitch names, > just sharing info on how to obtain base info within Linux itself. > > >

Re: vswitch name in sysfs

You can get the information you need indirectly, at least. The udev configuration in /etc/udev/rules.d records the correlation between virtual device numbers (line "0600") and Linux network interface names (like "eth0"), and the virtual device number corresponding to your network interface can be

Re: Help - Adding zfcp device to Redhat 5.4 ?

Have you seen this?: http://www.vm.ibm.com/education/lvc/lvc1020c.pdf ...I've only used this method on SLES so far- but the approach in that presentation (see p. 14 for adding a SCSI device to the live configuration, p.17 for persisting this in your configuration files) is based on s390-tools, so

Re: Suse SLES 11 / reiserfs / readonly problem

Not quite what I meant. I was thinking of situations where the original system would be temporarily shut down during the cloning or backup operation. In this case, the "owner" would access the file system read-write, but it'd be safer for the "cloner" to only have read-only access to those disks.

Re: Suse SLES 11 / reiserfs / readonly problem

gt; want to go with ISO-9660, which also works.) > > -- R; <>< > > > > > > On Wed, Aug 25, 2010 at 08:26, Christian Paro > wrote: > > Difference is that ext3 is prepared to fall back to ext2 functionality > when > > being read from a read-

Re: Suse SLES 11 / reiserfs / readonly problem

Difference is that ext3 is prepared to fall back to ext2 functionality when being read from a read-only device - which makes perfect sense, given that the journal's purpose is to protect the integrity of writes and (as Mark pointed out) it is of no value on a disk which will never again be written

Re: Suse SLES 11 / reiserfs / readonly problem

Reiserfs simply won't work if the disk you're trying to use it on is read-only - even when you attempt to mount the volume read-only, it expects read/write access to its journal and panics if it doesn't get it. So far as I could tell when I ran into this issue, there is no way to configure around t

Re: How to get Red Hat zLinux into single user mode?

I'm not sure single-user mode will help you here. According to RedHat, single-user mode isn't appropriate for situations where you aren't able to successfully mount your file systems: http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/Installation_Guide/s1-rescuemode-booting-single

Re: sles11 module-init-tools_fix_bnc480524

http://www.mail-archive.com/linux-390@vm.marist.edu/msg53768.html On Fri, Jun 11, 2010 at 10:26 AM, pavan kumar wrote: > Hi > > This is Pavan > > I'm trying to update my SLES 11 kernel but get a failed dependency for > module-init-tools_fix_bnc480524 which I can't find anywhere. Can anyone shed >

Re: Configuring networking in zVM under Hercules???

I don't know what school the OP goes to, but perhaps he should be looking into this: http://www.ibm.com/developerworks/university/systemz/index.html Certainly, he'd be better off - practically as well as legally - learning on the re

Re: tar extract - code conversion.

You could do something like this after extracting the archive: #/bin/bash mkdir ../ascii SAVEIFS=$IFS IFS=$(echo -en "\n\b"); for file in $(find .); do dd if=$file of=../ascii/$file conv=ascii done FS=$SAVEIFS ...and then you'll have another directory containing EBCDIC-to-ASCII converted copied

Re: extending an LV

wrote: > Yes I logged off,pn,then even rebooted > I did an lsdasd but 207(the new dasd) isnt shown > Thx > Mace > > On Thu Jun 3rd, 2010 9:56 AM EDT Christian Paro wrote: > > >What do you see when you do `modprobe vmcp; vmcp q v dasd` and `lsdasd`? > > > >Also,

Re: extending an LV

What do you see when you do `modprobe vmcp; vmcp q v dasd` and `lsdasd`? Also, did you do a full log-off/log-on of the guest after adding the disk to its directory statement? A complete log-off and log-on is necessary to make the guest's runtime state reflect the changes made to the directory, unl

Re: createrepo on SLES11

Example for adding a repository with zypper: `zypper addrepo --refresh nfs://192.168.0.1/nfs/sles11sp1/dvd1SLES11SP1DVD1` Example for removing a repository: `zypper removerepo nfs://192.168.0.1/nfs/sles11sp1/dvd1` On Mon, May 10, 2010 at 8:49 AM, Michael MacIsaac wrote: > Hi list, > > I haven'

Automatic scanning for LVM volume groups upon setting a disk online under SLES 11.

I've noticed that, when a disk (or set of disks) containing the physical extents underlying an LVM volume group is set online with `chccwdev -e` under SLES 11, that volume group is also automatically activated - setting the "open count" for those disks to "2" and preventing such operations as a non

Re: Fixed: SLES11 one disk is not online at boot, mount fails (of course)

com/volvoit/global/en-gb/ > ____ > From: Linux on 390 Port [linux-...@vm.marist.edu] On Behalf Of Christian > Paro [christian.p...@gmail.com] > Sent: Monday, March 29, 2010 15:29 > To: LINUX-390@VM.MARIST.EDU > Subject: Re: SLES11 one disk is not

Re: SLES11 one disk is not online at boot, mount fails (of course)

I believe that for SLES 11 zipl.conf is no longer used to determine which dasd to online at boot. Instead, however, you can run `dasd_configure 0.0.0210 1` before you run mkinitrd and zipl, and the specified disk should be set online and come back online on subsequent boots. On Mon, Mar 29, 2010 a

Re: Writing DASD label without destroying the content

You can use fdasd (in interactive mode) to change just the label. It's command "v", which will prompt you for a new label. You can then write the partition table (including the new label/volser) without changing the actual partitioning or erasing the data on the disk. On Thu, Mar 25, 2010 at 12:35

Re: Move root from LVM to Non-LVM File System

I should add that you do the bind mount *before* you chroot. And that the same directories should be excluded from what you try to copy across file systems. On Thu, Mar 18, 2010 at 6:45 PM, Christian Paro wrote: > If you're going the chroot route, you'll want to bind-mount /dev /pr

Re: Move root from LVM to Non-LVM File System

If you're going the chroot route, you'll want to bind-mount /dev /proc and /sys into the directory that you'll chroot into. This will make these in-memory-only filesystems accessible within your chrooted environment. See here: http://fermilinux.fnal.gov/documentation/tips/mount-bind-chroot On Th

Re: Move root from LVM to Non-LVM File System

It's not the simplest procedure ever, and I don't know of a tutorial the directly addresses what you're trying to do, but essentially you need to: - Shut down and log off of the Linux whose root filesystem you wish to transfer. - Bring up the volume group containing that root filesystem on another

Re: problem deinstalling an rpm

Did you try the -q and -e without the .s390x.rpm? Those commands aren't meant to work with the RPM's file name. Just its logical name (or fully-qualified name with version number, for cases where multiple versions can coexist). On Tue, Mar 9, 2010 at 3:47 PM, CHAPLIN, JAMES (CTR) < james.chap...@

Re: Run a script at boot time

Create an init script based on (or which calls) the script you've been using, and use `chkconfig` to enable it for the appropriate runlevel (which depends on what services you expect to already be up at the time your script is to be run). Having it on for the runlevel you normally boot into (genera

Re: Linux file system cache

, Christian Paro wrote: > Your answer might lie with */proc/sys/vm/pagecache:* > * > * > *http://kbase.redhat.com/faq/docs/DOC-7055* > > http://www.ibm.com/developerworks/linux/library/l-adfly.html > > > On Thu, Feb 11, 2010 at 9:19 AM, Martin, Terry R. (CMS/CTR) (CTR) < >

Re: Linux file system cache

Your answer might lie with */proc/sys/vm/pagecache:* * * *http://kbase.redhat.com/faq/docs/DOC-7055* http://www.ibm.com/developerworks/linux/library/l-adfly.html On Thu, Feb 11, 2010 at 9:19 AM, Martin, Terry R. (CMS/CTR) (CTR) < terry.mar...@cms.hhs.gov> wrote: > HI Offer, > > Unfortunately thi

Re: SLES11 and sshfs

The sshfs package itself. You may need to get a source package from the sshfs project page on Sourceforge, since it's not likely that you'll find a third-party s390x package for SLES11 where it's not provided with the official distribution. On Wed, Feb 3, 2010 at 11:56 AM, Bernie Wu wrote: > Th

Re: SLES11 and sshfs

Yes, but sshfs does run under fuse, so I'm guessing you'll need to also install fuse in order to get sshfs working. On Wed, Feb 3, 2010 at 11:33 AM, Bernie Wu wrote: > Thanks David, > > > Sounds like a FUSE module. > > Looked in all the "FUSE" packages but did not find sshfs. > > > The informati

Re: SLES11 and sshfs

This might help: The following explains how to mount a remote filesystem through ssh using > sshfs. > > By default openSUSE products included sshfs, however sles/sled products do > not. Instructions for installing sshfs are included for SLES/SLED below. > > > SLED/SLES products: > > >1. Downlo

Re: Waiting for device

This will get you a mapping from the by-id to the by-path device names: for file in /dev/disk/by-id/*; do echo ${file/*\/} \ $(ls -l /dev/disk/by-path | grep $(ls -l $file | awk '{print $11}') | awk '{print $9}') done ...which should give you a start on

Re: Linux software development question

If this is an application you wrote, why not just have it write to stdout and then redirect its output at the shell to wherever you want to put it. In other words, instead of: `app in1 in2 in3 output.file` you'd have `app in1 in2 in3 > output.file` (to output to a file named "output.file") or

Re: Renaming a volume

So it's not letting you use the -k (--keep_volser) option unless you also specify -a? Because, at least looking at the man page, -k should work as long as you're in non-interactive mode and -c puts you in non-interactive mode. As in: `fdasd -k -c /fdasdb.conf /dev/dasdb` Also, you might also try

An informal survey.

- What applications / types of applications (databases, web servers, etc...) are you running? - Do you typically have specialized guests running one "primary" application each, or sets/stacks of applications running on the same guest? - Do the majority of your Linux guests house long-term persist

Re: chccwdev never returning on SLES 11

Relevant-looking post from a Debian forum: http://www.mail-archive.com/debian-s...@lists.debian.org/msg02156.html ...apparently there's a bug with DASD devices being varied back on after they're varied off when they're listed in the "dasd" option for the dasd_mod kernel module. On Tue, Jul 28, 2