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e8753fb4f0
Relying on an /etc/hostid file which is installed in the system image breaks diskless systems which share an image. Certain cluster infrastructure such as MPI relies on all nodes having a unique hostid. However, we still must be careful to ensure the hostid is syncronized between the initramfs and system images when using zfs root filesystems. To accompish this the automatically created /etc/hostid file has been removed from the spl rpm packaging. The /etc/hostid file is now dynamically created for your initramfs as part of the dracut install process. This avoids the need to install it in the actual system images. This change also resolves the spl_hostid parameter handling for dracut. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #398 Closes #399 Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
59 lines
1.6 KiB
Bash
Executable File
59 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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. /lib/dracut-lib.sh
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# Let the command line override our host id.
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spl_hostid=`getarg spl_hostid=`
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if [ "${spl_hostid}" != "" ] ; then
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info "ZFS: Using hostid from command line: ${spl_hostid}"
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AA=`echo ${spl_hostid} | cut -b 1,2`
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BB=`echo ${spl_hostid} | cut -b 3,4`
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CC=`echo ${spl_hostid} | cut -b 5,6`
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DD=`echo ${spl_hostid} | cut -b 7,8`
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printf "\x$DD\x$CC\x$BB\x$AA" >/etc/hostid
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elif [ -f /etc/hostid ] ; then
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info "ZFS: Using hostid from /etc/hostid: `hostid`"
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else
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warn "ZFS: No hostid found on kernel command line or /etc/hostid. "
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warn "ZFS: Pools may not import correctly."
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fi
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case "$root" in
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""|zfs|zfs:)
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# We'll take root unset, root=zfs, or root=zfs:
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# No root set, so we want to read the bootfs attribute. We
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# can't do that until udev settles so we'll set dummy values
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# and hope for the best later on.
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root="zfs:AUTO"
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rootok=1
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wait_for_zfs=1
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info "ZFS: Enabling autodetection of bootfs after udev settles."
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;;
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ZFS\=*|zfs:*|zfs:FILESYSTEM\=*|FILESYSTEM\=*)
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# root is explicit ZFS root. Parse it now. We can handle
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# a root=... param in any of the following formats:
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# root=ZFS=rpool/ROOT
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# root=zfs:rpool/ROOT
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# root=zfs:FILESYSTEM=rpool/ROOT
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# root=FILESYSTEM=rpool/ROOT
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# Strip down to just the pool/fs
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root="${root#zfs:}"
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root="${root#FILESYSTEM=}"
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root="zfs:${root#ZFS=}"
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rootok=1
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wait_for_zfs=1
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info "ZFS: Set ${root} as bootfs."
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;;
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esac
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# Make sure Dracut is happy that we have a root and will wait for ZFS
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# modules to settle before mounting.
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if [ "${wait_for_zfs}" = "1" ]; then
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ln -s /dev/null /dev/root 2>/dev/null
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echo '[ -e /dev/zfs ]' > $hookdir/initqueue/finished/zfs.sh
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fi
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