Here's what I have in my notes from when we had issues with SP4 vs new disks
Once you get the rescue system loaded, activate the devices chzdev -e 0101-01ff vgscan if you think you might have an LVM problem and it went inactivate, activate VG perhaps (vgchange -ay vgname) If you need to rewrite zipl or grub and need a chroot environment, I did this mount /dev/dasda1 /mnt mount -t proc none /mnt/proc mount --rbind /dev /mnt/dev mount --rbind /sys /mnt/sys mount /dev/mapper/system-var /mnt/var mount /dev/mapper/system-usr /mnt/usr mount /dev/mapper/system-tmp /mnt/tmp mount /dev/mapper/system-home /mnt/home mount /dev/mapper/system-opt /mnt/opt chroot /mnt /bin/bash mount -a Now you can run zipl or grub2install -f or perhaps passwd change on root -----Original Message----- From: Linux on 390 Port <LINUX-390@VM.MARIST.EDU> On Behalf Of Will, Chris Sent: Friday, March 13, 2020 7:26 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Quick question on single user mode I was able to get a rescue system put together, activated dasd, mounted file systems and the chroot and everything looked "perfect". I changed the root password but on the reboot it still rejected what I was entering. That leads to suspect that this is crashing during the initial boot and it cannot find the boot partition or some other error. Our boot partition not only has the /boot directory but the /etc directory so if it can't find that it would not have access to the root password. Is there any way to avoid the emergency mode asking for a password for both the /boot/zipl initial boot and /boot/grub2. I would guess that any updates for the grug2 config would be made to /etc/default/grub. Chris Will Enterprise Linux/UNIX (ELU) (313) 549-9729 Cell cw...@bcbsm.com -----Original Message----- From: Will, Chris Sent: Thursday, March 12, 2020 10:55 AM To: i_mugz...@securiteam.co.il; LINUX-390@VM.MARIST.EDU Subject: RE: Quick question on single user mode Hello and thanks for all the help. I am trying to put together a rescue system, we have some parms we used for upgrading our system and I think I would have to change "upgrade=1" to "rescue=1". What I would like to do is via ssh: 1. fix root password 2. verify vg name and lv for our xfs root file systems (/usr /var /home /opt /tmp) 3. Possibly run mkinitrd ramdisk_size=131072 root=/dev/ram1 ro init=/linuxrc TERM=dumb upgrade=1 <<change this to rescue=1 or delete? ReadChannel=0.0.0600 WriteChannel=0.0.0601 DataChannel=0.0.0602 InstNetDev=osa Layer2=1 OSAInterface=qdio PortNo= Hostname=nbxav0100.bcbsm.com HostIP=10.96.1.200 Gateway=10.96.1.1 Netmask=255.255.255.0 Nameserver=10.64.65.48 Domain=bcbsm.com Install=nfs://10.96.1.186/srv/nfs/SLE-12-SP3-Server-DVD-s390x-GM-DVD1 <<delete this? UseVNC=1 VNCPassword=12345678 UseSSH=1 SSHPassword=12345678 Chris Will Enterprise Linux/UNIX (ELU) (313) 549-9729 Cell cw...@bcbsm.com -----Original Message----- From: Linux on 390 Port <LINUX-390@VM.MARIST.EDU> On Behalf Of ITschak Mugzach Sent: Thursday, March 12, 2020 3:07 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Quick question on single user mode [External email] Mark, I was able not to specify password and fix my SLES issues. the disks are mounted but the file system is organized differently. If I remember correctly, I reach such pages because I didn't have the root password. not sure thi is the OP issue. ITschak ITschak Mugzach *|** IronSphere Platform* *|* *Information Security Continuous Monitoring for z/OS, x/Linux & IBM I **| z/VM comming son * On Wed, Mar 11, 2020 at 9:31 PM Mark Post <mp...@suse.com> wrote: > On 3/11/20 9:39 AM, Will, Chris wrote: > > Sorry about that, since our move to zCloud I do not have access to > > the > 3270 console and all I received was a picture of the console messages. > I pulled out as much text as possible and here it is. > > How are you specifying the IPL command and any parameters then? I > think we need to understand how things are supposed to work for you so > that we can better provide assistance. > > If you can't get to the console of the guest, then trying to get into > single user mode or anything like that isn't going to help at all. One > possibility might be to try and specify "hvc_iucv=8 console=hvc0 > init=/bin/bash" on the command line, and use the terminal server tools > from another guest to get access. > > > 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://www2.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 The information contained in this communication is highly confidential and is intended solely for the use of the individual(s) to whom this communication is directed. 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