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mekatum

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Posts posted by mekatum

    Mount nfs-root over tcp (PXE boot) [MOVED]

    in Kaspersky Rescue Disk

    Posted

    @Andrey Kirzhemanov 

    I add new initrd to pxelinux config:

    LABEL test
     LINUX ../mnt/live/krd/boot/grub/k-x86_64
     INITRD ../mnt/live/krd/boot/grub/initrd.xz,../mnt/live/initrd1.xz
     APPEND nfsboot=10.10.10.41:/srv/tftpboot/mnt/live/krd/ net.ifnames=0 lang=en dostartx vga=791

    NFS-share was be updated and work (old initrd work from this NFS-share and new initrd must work too)

    $ ls -l mnt/live/

    -r-xr-xr-x. 1 support support 15045948 Nov 7 15:16 initrd.xz
    -r-xr-xr-x. 1 support support 13176 Nov 7 15:05 initrd1.xz

    $ cat /etc/exports

    /srv/tftpboot/mnt/live/krd 10.10.10.0/24(ro,wdelay,insecure,no_root_squash,all_squash,no_subtree_check,anonuid=1000,anongid=1000)

    /srv/tftpboot/mnt/live/ 10.10.10.0/24(ro,wdelay,insecure,no_root_squash,all_squash,no_subtree_check,anonuid=1000,anongid=1000)


    With kernel parameter “dostartx” I got kernelpanic
     

     

    Without “dostartx” I got this
     

     

    Mount nfs-root over tcp (PXE boot) [MOVED]

    in Kaspersky Rescue Disk

    Posted

    @Andrey Kirzhemanov 

    I disable UDP in nfs.conf. NFS-server listen only TCP:

    $ rpcinfo -p
     program vers proto port service
     100000 4 tcp 111 portmapper
     100000 3 tcp 111 portmapper
     100000 2 tcp 111 portmapper
     100000 4 udp 111 portmapper
     100000 3 udp 111 portmapper
     100000 2 udp 111 portmapper
     100024 1 udp 33363 status
     100024 1 tcp 39615 status
     100005 1 udp 20048 mountd
     100005 1 tcp 20048 mountd
     100005 2 udp 20048 mountd
     100005 2 tcp 20048 mountd
     100005 3 udp 20048 mountd
     100005 3 tcp 20048 mountd
     100003 3 tcp 2049 nfs
     100003 4 tcp 2049 nfs
     100227 3 tcp 2049 nfs_acl
     100021 1 udp 60018 nlockmgr
     100021 3 udp 60018 nlockmgr
     100021 4 udp 60018 nlockmgr
     100021 1 tcp 43269 nlockmgr
     100021 3 tcp 43269 nlockmgr
     100021 4 tcp 43269 nlockmgr

    NFS-share:  

    $ cat /etc/exports

    /srv/tftpboot/mnt/live/krd 10.10.10.0/24(ro,wdelay,insecure,no_root_squash,all_squash,no_subtree_check,anonuid=1000,anongid=1000)

    pxelinux config:

    LABEL Kaspersky Rescue Disk 2018
     LINUX ../mnt/live/krd/boot/grub/k-x86_64
     INITRD ../mnt/live/krd/boot/grub/initrd.xz
     APPEND nfsboot=10.10.10.41:/srv/tftpboot/mnt/live/krd/ net.ifnames=0 lang=en dostartx

    Screenshot:

     As you can see, my NFS-server can ping. I try mount NFS-share manually, but I get “connection time out”. Then I add “tcp” option and NFS-share is successfully mounted. 

    It seems that KRD init script can’t work with NFS v4 at all.

    My mistake. My NFS-server by default provide NFSv3 and NFSv4, but not listen UDP (by default).

    As I know, KRD based on SystemRescueCD 5.x.x., it not support NFSv4. You are right.
    https://web.archive.org/web/20181016223523/http://www.system-rescue-cd.org/manual/PXE_network_booting/
     

    Will you test fix of script  If i provide additional initrd file?

    Yes, I can test.

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