The calls that fail are 'open()' calls. In ubuntu we do not have patches to s390-tools for dasdfmt code path. Please seek help from s390-tools upstream developers at IBM.
And call to 'open()' should not require user to have a default shell set - e.g. it should not be resulting in e.g. system() calls. Alternatively, please provide steps to reproduce the issue - meaning how to recreate the z/VM and the un-dasdfmt-able disks. ** Changed in: linux (Ubuntu) Status: Incomplete => Won't Fix -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1643527 Title: dasdfmt fails after vary online. syslog show strange message "The disk layout of the DASD is not supported" Status in Ubuntu on IBM z Systems: Incomplete Status in linux package in Ubuntu: Won't Fix Bug description: Problem description: procedure: echo 1 > /sys/bus/ccw/devices/0.0.0199/online /sbin/chzdev dasd-eckd 0199 -e -p /sbin/dasdfmt -b 4096 -d cdl -f /dev/disk/by-path/ccw-0.0.0199 -y dasdfmt fails with: /sbin/dasdfmt: Unable to open device /dev/disk/by-path/ccw-0.0.0199: No such device looking at the syslog i can see a strange message that only comes out when i am having this issue: Nov 21 08:52:12 JUUB16MS kernel: [ 67.412484] dasd-eckd 0.0.0199: The disk layout of the DASD is not supported lsdasd returns: root@JUUB16MS:~# lsdasd Bus-ID Status Name Device Type BlkSz Size Blocks ============================================================================== 0.0.0192 active dasda 94:0 ECKD 4096 5070MB 1298160 0.0.0195 active dasdb 94:4 FBA 512 40MB 81920 0.0.0193 n/f dasdc 94:8 ECKD 0.0.0196 active dasdd 94:12 FBA 512 40MB 81920 0.0.0194 n/f dasde 94:16 ECKD 0.0.0197 n/f dasdf 94:20 ECKD 0.0.0198 n/f dasdg 94:24 ECKD 0.0.0199 n/f dasdh 94:28 ECKD you can see that the 199 is not format and can't be formatted... a workaround is to vary the disk offline and then online again. this time it will start ok and you can format it and work with it. ------------------------------ just to be clear... this happens after linking to an un-formatted disk dynamically and then vary it online... for example: vmcp link '*' 199 199 echo 1 > /sys/bus/ccw/devices/0.0.0199/online /sbin/chzdev dasd-eckd 0199 -e -p /sbin/dasdfmt -b 4096 -d cdl -f /dev/disk/by-path/ccw-0.0.0199 -y To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1643527/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp