Bug 1492208
| Summary: | Failed to switch root: Specified switch root path /sysroot does not seem to be an OS tree. os-release file is missing | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Steve Dickson <steved> |
| Component: | redhat-release | Assignee: | Lubos Kocman <lkocman> |
| Status: | CLOSED DUPLICATE | QA Contact: | Release Test Team <release-test-team-automation> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.5 | CC: | alex.williamson, avagarwa, coughlan, drusek, dtodorov, jbastian, jstancek, kdudka, lkocman, mcsontos, rpeterso, sdodson, systemd-maint-list |
| Target Milestone: | rc | Keywords: | Regression |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | redhat-release-7.5-0.5.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-11-06 09:18:09 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1469559 | ||
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Description
Steve Dickson
2017-09-15 19:14:49 UTC
I just did a fresh install of RHEL-7.5-20170914.n.0 Server x86_64 which includes systemd-219-44.el7.x86_64 and it worked fine. I rebooted the system a few times and it came fine each time. https://beaker.engineering.redhat.com/recipes/4268331 For the record: /mnt/redhat/rel-eng/latest-RHEL-7 -> RHEL-7.4-20170711.0 I was able to reproduce this by removing the os-release symlinks and files.
[root@localhost ~]# ls -l /etc/os-release
lrwxrwxrwx. 1 root root 21 Sep 15 15:54 /etc/os-release -> ../usr/lib/os-release
[root@localhost ~]# ls -l /usr/lib/os-release
lrwxrwxrwx. 1 root root 28 Sep 15 15:54 /usr/lib/os-release -> os.release.d/os-release-rhel
[root@localhost ~]# rm -f /etc/os-release \
/usr/lib/os-release \
/usr/lib/os.release.d/os-release-rhel
[root@localhost ~]# reboot
...
...
[ 4.910424] localhost.localdomain systemd[1]: Starting Switch Root...
[ 4.916397] localhost.localdomain systemctl[463]: Failed to switch root: Specified switch root path /sysroot does not seem to be an OS tree. os-release file is missing.
[ 4.917405] localhost.localdomain systemd[1]: initrd-switch-root.service: main process exited, code=exited, status=1/FAILURE
Do you know how your os-release file disappeared?
The symlinks seem to be new thing for RHEL 7.5 /etc/os-release -> /usr/lib/os-release -> os.release.d/os-release-rhel RHEL 7.4 /etc/os-release is just a plain file (In reply to Jeff Bastian from comment #5) > The symlinks seem to be new thing for RHEL 7.5 > /etc/os-release -> /usr/lib/os-release -> os.release.d/os-release-rhel > > RHEL 7.4 /etc/os-release is just a plain file Yes... /etc/os-release is a symlink but to .. :/# ls -ld /etc/os-release lrwxrwxrwx 1 root 0 2 Sep 15 13:27 /etc/os-release -> .. and there is no /usr/lib/os-release :/# ls /usr/lib/os-release ls: cannot access /usr/lib/os-release: No such file or directory So this must be the problem... change component to redhat-release-server I also ran into this issue when I upgraded one of VMs to 7.5 from 7.4 and the VM stopped booting with the same error. As a work around, I mounted sysroot in write mode and created a symlink os-relead.d to os.release.d and the VM booted again. I found comment #8 to be a bit cryptic, but it gave me enough clues to get my machines working again. The exact commands I pasted into the failed console are: mount -o remount,rw /sysroot cd /sysroot/usr/lib ln -s os.release.d os-release.d exit *** Bug 1491957 has been marked as a duplicate of this bug. *** I believe it's related to migration of redhat-release-{variant} into redhat-release. There was a typo in /etc/os.release.d I hope if fixes your issue as well.
Lubos
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