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    Red Hat Virtualization (RHV or RHVH) installation not booting

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    • W Offline
      Wugutech
      last edited by Wugutech

      Red Hat Virtualization (RHVH) installation not booting on XCP-NG

      If I create it on XCP-NG, it always failed while booting
      I tried BIOS, UEFI, other install media, rhel8 template,

      the boot process shows:
      Failed to mount /sysroot
      hostname also does not apply correctly

      94c9c55e-7edf-4098-83a7-971c81e92c7d-image.png

      it says:

      mount: /sysroot: cannot mount /dev/mapper/rhvh-root read only.
kernel: XFS (dm-3): log mount failed
systemd[1]: sysroot.mount: Mount process exited, code=existed status=32
systemd[1]: sysroot.mount: Failed with result 'exit-code'.
systemd[1]: Failed to mount /sysroot.

      3f014bc3-ebfa-4b5f-832b-f99cd6e065ce-image.png

      • I tried this on VirtualBox, it just boot to the OS normally, so I presume may be it has something to do with the hypervisor,
      • including hostname applied correctly,
      • and also, in virtualbox, the boot menu shows RHVH -4.4.9.2 and so on
      • while with XCP-NG VM, the boot menu shows Red Hat Enterprise Linux (kernel version)
      • virtualbox use sda while XCP use xvda (so may be because of this?)

      234920cf-ba3b-4880-8eff-8daea8ec4a3d-image.png

      eb76d59b-d58f-4710-a251-3bce71aabaf6-image.png

      Thanks!

      W 1 Reply Last reply Reply Quote 0
      • W Offline
        Wugutech @Wugutech
        last edited by

        😀 😀 😀 😀 😀

        1 Reply Last reply Reply Quote 0
        • DanpD Offline
          Danp Pro Support Team
          last edited by

          Apparently it's a known issue. The details are here, but you need a login to view the entire KB article.

          W 1 Reply Last reply Reply Quote 0
          • W Offline
            Wugutech @Danp
            last edited by

            @danp

            thanks for replying!

            W 1 Reply Last reply Reply Quote 0
            • W Offline
              Wugutech @Wugutech
              last edited by Wugutech

              https://access.redhat.com/solutions/5347091

              System fails to mount filesystem on multipath partition during boot time in RHEL8
              Solution Verified - Updated May 31 2021 at 2:25 PM - English
              Environment

              Red Hat Enterprise Linux 8
    dracut-049-27.git20190906.el8.x86_64

              Issue

              System fails to mount filesystem created on multipath partition during boot time in RHEL8.

              Raw

              [ 235.191955] testsystem systemd[1]: Mounting /sysroot...
              [ 235.398136] testsystem kernel: SGI XFS with ACLs, security attributes, no debug enabled
              [ 235.398913] testsystem mount[2922]: mount: /sysroot: /dev/sdb4 already mounted or mount point busy.
              [ 235.399207] testsystem systemd[1]: sysroot.mount: Mount process exited, code=exited status=32
              [ 235.399259] testsystem systemd[1]: sysroot.mount: Failed with result 'exit-code'.
              [ 235.399480] testsystem systemd[1]: Failed to mount /sysroot.

              Resolution

              Upgrade dracut package to dracut-049-135.git20210121.el8 as per RHBA-2021:1661
As a workaround, rebuild initramfs with /lib/udev/rules.d/11-dm-parts.rules.

              Raw

              dracut -f -v --include /lib/udev/rules.d/11-dm-parts.rules /lib/udev/rules.d/11-dm-parts.rules

              Or create /etc/dracut.conf.d/part.conf with below lines and rebuild initramfs image.
              #vi /etc/dracut.conf.d/part.conf
              install_items+=/lib/udev/rules.d/11-dm-parts.rules

              Root Cause

              dracut doesn't install /lib/udev/rules.d/11-dm-parts.rules, which is what changes the link priority for kpartx partition devices, which should make /dev/disk/by-uuid point to multipath devices instead of the scsi path devices.

              Diagnostic Steps

              Check boot logs and verify whether root filesystem mounted using sdX device or mpath device.

              Raw

              [ 235.185721] testsystem systemd[1]: Starting File System Check on /dev/disk/by-uuid/3a9fc23b-e95d-44a2-b95c-9651799f8c77...
              [ 235.190597] testsystem systemd-fsck[2920]: fsck.none doesn't exist, not checking file system on /dev/disk/by-uuid/3a9fc23b-e95d-44a2-b95c-9651799f8c77.
              [ 235.191192] testsystem systemd[1]: Started File System Check on /dev/disk/by-uuid/3a9fc23b-e95d-44a2-b95c-9651799f8c77.
              [ 235.191955] testsystem systemd[1]: Mounting /sysroot...
              [ 235.398913] testsystem mount[2922]: mount: /sysroot: /dev/sdb4 already mounted or mount point busy.

              Verify /lib/udev/rules.d/11-dm-parts.rules rule available in initramfs image.

              Raw

              lsinitrd initramfs-4.18.0-193.el8.x86_64.img |grep dm-parts |wc -l

              0

              Rebuild initramfs image with /usr/lib/udev/rules.d/11-dm-parts.rules.

              Raw

              #lsinitrd initramfs-4.18.0-193.el8.x86_64.img |grep dm-parts
              Arguments: -f -v -a 'multipath' --include '/usr/lib/udev/rules.d/11-dm-parts.rules' '/usr/lib/udev/rules.d/11-dm-parts.rules'
              -rw-r--r-- 1 root root 1442 Dec 17 2019 usr/lib/udev/rules.d/11-dm-parts.rules

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