Re: Adding DASD to a Debian guest
On Thu, 06 Aug 2015 15:04:10 -0400 (EDT), Cameron Seay wrote: I have attached 3 mod-9s to a guest where Debian is the OS. Q DASD sees the new dasd, but of course Debian can't see it until it's in a Linux filesystem. We don't know how to format it while in Debian. Any suggestions? All steps here are performed as the root user. Step 1: cd to /etc/sysconfig/hardware. Create empty files in this directory, one per dasd device, with the touch command. Use something like touch config-ccw-0.0. where is the four-digit hexadecimal virtual device number (with leading zeros if necessary to make four digits). If the device number contains hexadecimal digits in the range A-F, make sure they are in lower case. For example: touch config-ccw-0.0.63fc touch config-ccw-0.0.63fd touch config-ccw-0.0.63fe Shutdown and reboot. The devices should now show up in the output of cat /proc/dasd/devices Step 2: Create 1 or more partitions (up to 3) on the device with the fdasd command. See the man page for fdasd for details. I usually create a single partition on each disk which occupies the entire volume. Step 3: If you are adding the new partitions to LVM2, use appropriate LVM2 commands to add the new partitions to LVM2 and enlarge the filesystem on the logical volume. I can't remember what they are because I don't use LVM2 with my Debian servers. If you want to use the partitions directly, use a file system formatter, such as mke2fs, to create a filesystem on each partition. At this point, I recommend a shutdown and reboot again. Upon reboot, udev aliases should have been created for your new partitions. Check out the pseudo-files in /dev/disk/by-uuid. Use these udev aliases in /etc/fstab to mount them. Of course, if it's a swap partition, use mkswap instead of mke2fs. Reboot again and your new file systems should be mounted. If you know what you're doing, you can avoid the reboots; but I'm trying to keep it simple (and the e-mail short). Debian doesn't use a front-end administration tool, such as yast, to do this kind of thing. You have to know the back-end commands. HTH. Debian has an s390 support e-mail list at debian-s...@lists.debian.org. The e-mail archives can be viewed at https://lists.debian.org/debian-s390/ Regards, -- .''`. Stephen Powellzlinux...@wowway.com : :' : `. `'` `- -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Adding DASD to a Debian guest
in debian as far as I remember it was just a matter of adding a new dasd to zipl.conf , running zipl and that’s it. Gregory Powiedziuk On Aug 6, 2015, at 3:17 PM, Mark Post mp...@suse.com wrote: On 8/6/2015 at 03:04 PM, Cameron Seay cws...@gmail.com wrote: I have attached 3 mod-9s to a guest where Debian is the OS. Q DASD sees the new dasd, but of course Debian can't see it until it's in a Linux filesystem. We don't know how to format it while in Debian. The same as any other mainframe Linux system: dasdfmt. The bigger question is what tools and configuration files are available/needed to make the volumes persistent across a reboot. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Adding DASD to a Debian guest
On 8/6/2015 at 03:04 PM, Cameron Seay cws...@gmail.com wrote: I have attached 3 mod-9s to a guest where Debian is the OS. Q DASD sees the new dasd, but of course Debian can't see it until it's in a Linux filesystem. We don't know how to format it while in Debian. The same as any other mainframe Linux system: dasdfmt. The bigger question is what tools and configuration files are available/needed to make the volumes persistent across a reboot. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Adding DASD to a Debian guest
Isn't dasdfmt, lsdasd, et al there? How did you install Debian? Are the ibm driver tools installed?Linux should be able to see it as soon as it's online. You may have to issue chccwdev -e for the disk if it doesn't happen automatically. cat /proc/partitions should give you some idea what disks Linux already sees as well. You could use LXFMT from Sine Nomine under CMS if you can't do it under Linux -- but you 'should' be able to. Scott Rohling On Thu, Aug 6, 2015 at 12:04 PM, Cameron Seay cws...@gmail.com wrote: I have attached 3 mod-9s to a guest where Debian is the OS. Q DASD sees the new dasd, but of course Debian can't see it until it's in a Linux filesystem. We don't know how to format it while in Debian. Any suggestions? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Adding DASD to a Debian guest
I have attached 3 mod-9s to a guest where Debian is the OS. Q DASD sees the new dasd, but of course Debian can't see it until it's in a Linux filesystem. We don't know how to format it while in Debian. Any suggestions? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Adding DASD to a Debian guest
Can you see them when you do cat /proc/dasd/devices ? If not than first bring them online (chccwdev -e 0.0.) and then check again. If they are there, than you are ready to do a low level format with dasdfmt /dev/dasdX (/proc/dasd/devices will tell you which dasdX is that). After that, create partitions (or not if you don’t want to) with fdasd /dev/dasdX Later you can create LVM (or not if you don’t want to) with pvcreate, vgcreate, lvcreate. Last step is creating a filesystem with mkfs.ext4 (or ext3) on a new partition or logical volume. And now, you can mount it. But you have to know that at this point you are also rewriting cylinder 0 of this DASD (if it is really attached) so it’s label will change. Let us know if you need more details Grzegorz Powiedziuk On Aug 6, 2015, at 3:04 PM, Cameron Seay cws...@gmail.com wrote: of course Debian can't see it until it's in a Linux filesystem. We don't know how to format it while in Debian. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
