init: split initialization into quasi-idempotent parts
This commit is contained in:
Andrew J. Hesford
parent
0b08977e7e
commit
e3b1ff3df1
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@ -0,0 +1,36 @@
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#!/bin/bash
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# vim: softtabstop=2 shiftwidth=2 expandtab
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[ "${ZFSBOOTMENU_INITIALIZATION}" = "yes" ] || return 0
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# Attempt to load spl normally
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if ! _modload="$( modprobe spl 2>&1 )" ; then
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zdebug "${_modload}"
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# Capture the filename for spl.ko
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_modfilename="$( modinfo -F filename spl )"
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if [ -n "${_modfilename}" ] ; then
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zinfo "loading ${_modfilename}"
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# Load with a hostid of 0, so that /etc/hostid takes precedence and
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# invalid spl.spl_hostid values are ignored
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# There's a race condition between udev and insmod spl
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# insmod failures are no longer a hard failure - they can be because
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# 1. spl.ko is already loaded because of the race condition
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# 2. there's an invalid parameter or value for spl.ko
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if ! _modload="$( insmod "${_modfilename}" "spl_hostid=0" 2>&1 )" ; then
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zwarn "${_modload}"
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zwarn "unable to load SPL kernel module; attempting to load ZFS anyway"
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fi
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fi
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fi
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if ! _modload="$( modprobe zfs 2>&1 )" ; then
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zerror "${_modload}"
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emergency_shell "unable to load ZFS kernel modules"
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fi
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udevadm settle
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@ -0,0 +1,21 @@
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#!/bin/bash
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# vim: softtabstop=2 shiftwidth=2 expandtab
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[ "${ZFSBOOTMENU_INITIALIZATION}" = "yes" ] || return 0
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# Write out a default or overridden hostid
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if [ -n "${spl_hostid}" ] ; then
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if write_hostid "${spl_hostid}" ; then
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zinfo "writing /etc/hostid from command line: ${spl_hostid}"
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else
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# write_hostid logs an error for us, just note the new value
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# shellcheck disable=SC2154
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write_hostid "${default_hostid}"
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zinfo "defaulting hostid to ${default_hostid}"
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fi
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elif [ ! -e /etc/hostid ]; then
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zinfo "no hostid found on kernel command line or /etc/hostid"
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# shellcheck disable=SC2154
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zinfo "defaulting hostid to ${default_hostid}"
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write_hostid "${default_hostid}"
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fi
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@ -0,0 +1,57 @@
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#!/bin/bash
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# vim: softtabstop=2 shiftwidth=2 expandtab
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[ "${ZFSBOOTMENU_INITIALIZATION}" = "yes" ] || return 0
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# Wait for devices to show up
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if [ -n "${zbm_wait_for_devices}" ]; then
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IFS=',' read -r -a user_devices <<<"${zbm_wait_for_devices}"
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while true; do
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FOUND=0
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EXPECTED=0
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missing=()
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for device in "${user_devices[@]}"; do
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case "${device}" in
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/dev/*)
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((EXPECTED=EXPECTED+1))
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if [ -e "${device}" ] ; then
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((FOUND=FOUND+1))
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else
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missing+=( "$device" )
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fi
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;;
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*=*)
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((EXPECTED=EXPECTED+1))
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path_prefix="/dev/disk/by-${device%=*}"
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checkfor="${path_prefix,,}/${device##*=}"
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if [ -e "${checkfor}" ] ; then
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((FOUND=FOUND+1))
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else
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missing+=( "$device" )
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fi
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;;
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*)
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zerror "malformed device: '${device}'"
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;;
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esac
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done
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if [ ${FOUND} -eq ${EXPECTED} ]; then
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break
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else
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if ! timed_prompt -d "${zbm_retry_delay:-5}" \
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-e "to cancel" -m "" \
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-m "$( colorize red "One or more required devices are missing" )" \
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-p "retrying in $( colorize yellow "%0.2d" ) seconds" ; then
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for dev in "${missing[@]}" ; do
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zerror "required device '${dev}' not found"
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done
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break
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fi
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fi
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done
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unset FOUND EXPECTED device path_prefix checkfor
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fi
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@ -0,0 +1,31 @@
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#!/bin/bash
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# vim: softtabstop=2 shiftwidth=2 expandtab
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[ "${ZFSBOOTMENU_INITIALIZATION}" = "yes" ] || return 0
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# Import ZBM hooks from an external root, if they exist
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if [ -n "${zbm_hook_root}" ]; then
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import_zbm_hooks "${zbm_hook_root}"
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fi
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# Remove the executable bit from any hooks in the skip list
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if zbm_skip_hooks="$( get_zbm_arg zbm.skip_hooks )" && [ -n "${zbm_skip_hooks}" ]; then
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zdebug "processing hook skip directives: ${zbm_skip_hooks}"
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IFS=',' read -r -a zbm_skip_hooks <<<"${zbm_skip_hooks}"
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for _skip in "${zbm_skip_hooks[@]}"; do
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[ -n "${_skip}" ] || continue
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for _hook in /libexec/hooks/*.d/*; do
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[ -e "${_hook}" ] || continue
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if [ "${_skip}" = "${_hook##*/}" ]; then
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zinfo "Disabling hook: ${_hook}"
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chmod 000 "${_hook}"
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fi
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done
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done
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unset _hook _skip
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fi
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# Run early setup hooks, if they exist
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tput clear
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/libexec/zfsbootmenu-run-hooks -once "early-setup.d"
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@ -0,0 +1,117 @@
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#!/bin/bash
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# vim: softtabstop=2 shiftwidth=2 expandtab
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[ "${ZFSBOOTMENU_INITIALIZATION}" = "yes" ] || return 0
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# If a boot pool is specified, that will be tried first
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# shellcheck disable=SC2154
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try_pool="${zbm_prefer_pool}"
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zbm_import_attempt=0
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while true; do
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if [ -n "${try_pool}" ]; then
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zdebug "attempting to import preferred pool ${try_pool}"
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fi
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read_write='' import_pool "${try_pool}"
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# shellcheck disable=SC2154
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if check_for_pools; then
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if [ "${zbm_require_pool}" = "only" ]; then
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zdebug "only importing ${try_pool}"
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break
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elif [ -n "${try_pool}" ]; then
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# If a single pool was requested and imported, try importing others
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try_pool=""
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continue
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else
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# Otherwise, all possible pools were imported, nothing more to try
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break
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fi
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elif [ "${import_policy}" == "hostid" ] && poolmatch="$( match_hostid "${try_pool}" )"; then
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zdebug "match_hostid returned: ${poolmatch}"
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spl_hostid="${poolmatch##*;}"
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export spl_hostid
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# Store the hostid to use for for KCL overrides
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echo -n "$spl_hostid" > "${BASE}/spl_hostid"
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# If match_hostid succeeds, it has imported *a* pool...
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if [ -n "${try_pool}" ] && [ "${zbm_require_pool}" = "only" ]; then
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# In "only" pool mode, the import was the sole pool desired; nothing more to do
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break
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else
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# Otherwise, try one more pass to pick up other pools matching this hostid
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try_pool=""
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continue
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fi
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elif [ -n "${try_pool}" ] && [ -z "${zbm_require_pool}" ]; then
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# If a specific pool was tried unsuccessfully but is not a requirement,
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# allow another pass to try any other importable pools
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try_pool=""
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continue
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fi
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zbm_import_attempt="$((zbm_import_attempt + 1))"
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zinfo "unable to import a pool on attempt ${zbm_import_attempt}"
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# Just keep retrying after a delay until the user presses ESC
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if timed_prompt -d "${zbm_retry_delay:-5}" \
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-p "Unable to import $( colorize magenta "${try_pool:-pool}" ), retrying in $( colorize yellow "%0.2d" ) seconds" \
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-r "to retry immediately" \
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-e "for a recovery shell"; then
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continue
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fi
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log_unimportable
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# Allow the user to attempt recovery
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emergency_shell "unable to successfully import a pool"
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done
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# restrict read-write access to any unhealthy pools
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while IFS=$'\t' read -r _pool _health; do
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if [ "${_health}" != "ONLINE" ]; then
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echo "${_pool}" >> "${BASE}/degraded"
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zerror "prohibiting read/write operations on ${_pool}"
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fi
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done <<<"$( zpool list -H -o name,health )"
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unset _pool _health
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zdebug && zdebug "$( zreport )"
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unsupported=0
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while IFS=$'\t' read -r _pool _property; do
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if [[ "${_property}" =~ "unsupported@" ]]; then
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zerror "unsupported property: ${_property}"
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if ! grep -q "${_pool}" "${BASE}/degraded" >/dev/null 2>&1 ; then
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echo "${_pool}" >> "${BASE}/degraded"
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fi
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unsupported=1
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fi
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done <<<"$( zpool get all -H -o name,property )"
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if [ "${unsupported}" -ne 0 ]; then
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zerror "Unsupported features detected, Upgrade ZFS modules in ZFSBootMenu with generate-zbm"
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timed_prompt -m "$( colorize red 'Unsupported features detected')" \
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-m "$( colorize red 'Upgrade ZFS modules in ZFSBootMenu with generate-zbm')"
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fi
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unset unsupported
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# Attempt to find the bootfs property
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# shellcheck disable=SC2086
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while read -r _bootfs; do
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if [ "${_bootfs}" = "-" ]; then
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BOOTFS=
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else
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BOOTFS="${_bootfs}"
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break
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fi
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done <<<"$( zpool list -H -o bootfs "${zbm_prefer_pool:---}" )"
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unset _bootfs
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if [ -n "${BOOTFS}" ]; then
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export BOOTFS
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echo "${BOOTFS}" > "${BASE}/bootfs"
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fi
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@ -229,6 +229,10 @@ install_zbm_core() {
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done
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done
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for cfile in "${zfsbootmenu_module_root}/init.d"/*; do
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zbm_install_file "${cfile}" "/libexec/init.d/${cfile##*/}" || ret=$?
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done
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return $ret
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}
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@ -29,251 +29,33 @@ mkdir -p "${BASE:=/zfsbootmenu}"
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# explicitly mount efivarfs as read-only
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mount_efivarfs "ro"
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# Attempt to load spl normally
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if ! _modload="$( modprobe spl 2>&1 )" ; then
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zdebug "${_modload}"
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# Normalize any forcing variable
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case "${ZFSBOOTMENU_FORCE_INIT,,}" in
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yes|y|true|t|1) ZFSBOOTMENU_FORCE_INIT=yes;;
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*) unset ZFSBOOTMENU_FORCE_INIT;;
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esac
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# Capture the filename for spl.ko
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_modfilename="$( modinfo -F filename spl )"
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if [ -n "${_modfilename}" ] ; then
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zinfo "loading ${_modfilename}"
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# Load with a hostid of 0, so that /etc/hostid takes precedence and
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# invalid spl.spl_hostid values are ignored
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# There's a race condition between udev and insmod spl
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# insmod failures are no longer a hard failure - they can be because
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# 1. spl.ko is already loaded because of the race condition
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# 2. there's an invalid parameter or value for spl.ko
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if ! _modload="$( insmod "${_modfilename}" "spl_hostid=0" 2>&1 )" ; then
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zwarn "${_modload}"
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zwarn "unable to load SPL kernel module; attempting to load ZFS anyway"
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fi
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fi
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fi
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if ! _modload="$( modprobe zfs 2>&1 )" ; then
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zerror "${_modload}"
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emergency_shell "unable to load ZFS kernel modules"
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fi
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udevadm settle
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# Write out a default or overridden hostid
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if [ -n "${spl_hostid}" ] ; then
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if write_hostid "${spl_hostid}" ; then
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zinfo "writing /etc/hostid from command line: ${spl_hostid}"
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else
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# write_hostid logs an error for us, just note the new value
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# shellcheck disable=SC2154
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write_hostid "${default_hostid}"
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zinfo "defaulting hostid to ${default_hostid}"
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fi
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elif [ ! -e /etc/hostid ]; then
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zinfo "no hostid found on kernel command line or /etc/hostid"
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# shellcheck disable=SC2154
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zinfo "defaulting hostid to ${default_hostid}"
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write_hostid "${default_hostid}"
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fi
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# Wait for devices to show up
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if [ -n "${zbm_wait_for_devices}" ]; then
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IFS=',' read -r -a user_devices <<<"${zbm_wait_for_devices}"
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while true; do
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FOUND=0
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EXPECTED=0
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missing=()
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for device in "${user_devices[@]}"; do
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case "${device}" in
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/dev/*)
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((EXPECTED=EXPECTED+1))
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if [ -e "${device}" ] ; then
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((FOUND=FOUND+1))
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else
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missing+=( "$device" )
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fi
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;;
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*=*)
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((EXPECTED=EXPECTED+1))
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path_prefix="/dev/disk/by-${device%=*}"
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checkfor="${path_prefix,,}/${device##*=}"
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if [ -e "${checkfor}" ] ; then
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((FOUND=FOUND+1))
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else
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missing+=( "$device" )
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fi
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;;
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*)
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zerror "malformed device: '${device}'"
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;;
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esac
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done
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if [ ${FOUND} -eq ${EXPECTED} ]; then
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break
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else
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if ! timed_prompt -d "${zbm_retry_delay:-5}" \
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-e "to cancel" -m "" \
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-m "$( colorize red "One or more required devices are missing" )" \
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-p "retrying in $( colorize yellow "%0.2d" ) seconds" ; then
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for dev in "${missing[@]}" ; do
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zerror "required device '${dev}' not found"
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done
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break
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fi
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fi
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done
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unset FOUND EXPECTED device path_prefix checkfor
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fi
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# Import ZBM hooks from an external root, if they exist
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if [ -n "${zbm_hook_root}" ]; then
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import_zbm_hooks "${zbm_hook_root}"
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fi
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# Remove the executable bit from any hooks in the skip list
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if zbm_skip_hooks="$( get_zbm_arg zbm.skip_hooks )" && [ -n "${zbm_skip_hooks}" ]; then
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zdebug "processing hook skip directives: ${zbm_skip_hooks}"
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IFS=',' read -r -a zbm_skip_hooks <<<"${zbm_skip_hooks}"
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for _skip in "${zbm_skip_hooks[@]}"; do
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[ -n "${_skip}" ] || continue
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for _hook in /libexec/hooks/*.d/*; do
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[ -e "${_hook}" ] || continue
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if [ "${_skip}" = "${_hook##*/}" ]; then
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zinfo "Disabling hook: ${_hook}"
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chmod 000 "${_hook}"
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fi
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done
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done
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unset _hook _skip
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fi
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# Run early setup hooks, if they exist
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tput clear
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/libexec/zfsbootmenu-run-hooks "early-setup.d"
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# If a boot pool is specified, that will be tried first
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# shellcheck disable=SC2154
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try_pool="${zbm_prefer_pool}"
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zbm_import_attempt=0
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while true; do
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if [ -n "${try_pool}" ]; then
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zdebug "attempting to import preferred pool ${try_pool}"
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fi
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read_write='' import_pool "${try_pool}"
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# shellcheck disable=SC2154
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if check_for_pools; then
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if [ "${zbm_require_pool}" = "only" ]; then
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zdebug "only importing ${try_pool}"
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break
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elif [ -n "${try_pool}" ]; then
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# If a single pool was requested and imported, try importing others
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try_pool=""
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continue
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else
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# Otherwise, all possible pools were imported, nothing more to try
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break
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fi
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elif [ "${import_policy}" == "hostid" ] && poolmatch="$( match_hostid "${try_pool}" )"; then
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zdebug "match_hostid returned: ${poolmatch}"
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spl_hostid="${poolmatch##*;}"
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export spl_hostid
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|
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# Store the hostid to use for for KCL overrides
|
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echo -n "$spl_hostid" > "${BASE}/spl_hostid"
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|
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# If match_hostid succeeds, it has imported *a* pool...
|
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if [ -n "${try_pool}" ] && [ "${zbm_require_pool}" = "only" ]; then
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# In "only" pool mode, the import was the sole pool desired; nothing more to do
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break
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else
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# Otherwise, try one more pass to pick up other pools matching this hostid
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try_pool=""
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continue
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fi
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elif [ -n "${try_pool}" ] && [ -z "${zbm_require_pool}" ]; then
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# If a specific pool was tried unsuccessfully but is not a requirement,
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# allow another pass to try any other importable pools
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try_pool=""
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continue
|
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fi
|
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|
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zbm_import_attempt="$((zbm_import_attempt + 1))"
|
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zinfo "unable to import a pool on attempt ${zbm_import_attempt}"
|
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|
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# Just keep retrying after a delay until the user presses ESC
|
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if timed_prompt -d "${zbm_retry_delay:-5}" \
|
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-p "Unable to import $( colorize magenta "${try_pool:-pool}" ), retrying in $( colorize yellow "%0.2d" ) seconds" \
|
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-r "to retry immediately" \
|
||||
-e "for a recovery shell"; then
|
||||
continue
|
||||
fi
|
||||
|
||||
log_unimportable
|
||||
# Allow the user to attempt recovery
|
||||
emergency_shell "unable to successfully import a pool"
|
||||
# Run the initializer snippets
|
||||
for src in /libexec/init.d/*; do
|
||||
[ -x "${src}" ] || [ -n "${ZFSBOOTMENU_FORCE_INIT}" ] || continue
|
||||
zinfo "running init stage ${src}"
|
||||
# shellcheck disable=SC1090
|
||||
ZFSBOOTMENU_INITIALIZATION=yes source "${src}"
|
||||
chmod 000 "${src}"
|
||||
done
|
||||
|
||||
# restrict read-write access to any unhealthy pools
|
||||
while IFS=$'\t' read -r _pool _health; do
|
||||
if [ "${_health}" != "ONLINE" ]; then
|
||||
echo "${_pool}" >> "${BASE}/degraded"
|
||||
zerror "prohibiting read/write operations on ${_pool}"
|
||||
fi
|
||||
done <<<"$( zpool list -H -o name,health )"
|
||||
unset _pool _health
|
||||
|
||||
zdebug && zdebug "$( zreport )"
|
||||
|
||||
unsupported=0
|
||||
while IFS=$'\t' read -r _pool _property; do
|
||||
if [[ "${_property}" =~ "unsupported@" ]]; then
|
||||
zerror "unsupported property: ${_property}"
|
||||
if ! grep -q "${_pool}" "${BASE}/degraded" >/dev/null 2>&1 ; then
|
||||
echo "${_pool}" >> "${BASE}/degraded"
|
||||
fi
|
||||
unsupported=1
|
||||
fi
|
||||
done <<<"$( zpool get all -H -o name,property )"
|
||||
|
||||
if [ "${unsupported}" -ne 0 ]; then
|
||||
zerror "Unsupported features detected, Upgrade ZFS modules in ZFSBootMenu with generate-zbm"
|
||||
timed_prompt -m "$( colorize red 'Unsupported features detected')" \
|
||||
-m "$( colorize red 'Upgrade ZFS modules in ZFSBootMenu with generate-zbm')"
|
||||
fi
|
||||
unset unsupported
|
||||
|
||||
# Attempt to find the bootfs property
|
||||
# shellcheck disable=SC2086
|
||||
while read -r _bootfs; do
|
||||
if [ "${_bootfs}" = "-" ]; then
|
||||
BOOTFS=
|
||||
else
|
||||
BOOTFS="${_bootfs}"
|
||||
break
|
||||
fi
|
||||
done <<<"$( zpool list -H -o bootfs "${zbm_prefer_pool:---}" )"
|
||||
unset _bootfs
|
||||
|
||||
if [ -n "${BOOTFS}" ]; then
|
||||
export BOOTFS
|
||||
echo "${BOOTFS}" > "${BASE}/bootfs"
|
||||
fi
|
||||
unset src ZFSBOOTMENU_INITIALIZATION
|
||||
|
||||
: > "${BASE}/initialized"
|
||||
|
||||
# Finish here unless ZFSBOOTMENU_CONSOLE is set
|
||||
case "${ZFSBOOTMENU_CONSOLE,,}" in
|
||||
yes|y|true|t|1) ;;
|
||||
*) exit 0
|
||||
esac
|
||||
|
||||
unset ZFSBOOTMENU_CONSOLE
|
||||
|
||||
# If BOOTFS is not empty display the fast boot menu
|
||||
# shellcheck disable=SC2154
|
||||
if [ "${menu_timeout}" -ge 0 ] && [ -n "${BOOTFS}" ]; then
|
||||
|
|
@ -304,10 +86,8 @@ if [ -e "${BASE}/active" ] ; then
|
|||
emergency_shell "an active instance is already running"
|
||||
fi
|
||||
|
||||
# Otherwise, just continue to launch ZFSBootMenu forever
|
||||
while true; do
|
||||
if [ -x /bin/zfsbootmenu ]; then
|
||||
/bin/zfsbootmenu
|
||||
fi
|
||||
|
||||
[ -x /bin/zfsbootmenu ] && /bin/zfsbootmenu
|
||||
emergency_shell
|
||||
done
|
||||
|
|
|
|||
|
|
@ -14,6 +14,12 @@ for src in "${sources[@]}"; do
|
|||
source "${src}" >/dev/null 2>&1 || exit 1
|
||||
done
|
||||
|
||||
ONE_SHOT_HOOKS=0
|
||||
if [ "${1}" = "-once" ]; then
|
||||
ONE_SHOT_HOOKS=1
|
||||
shift
|
||||
fi
|
||||
|
||||
hook_stage="${1}"
|
||||
|
||||
if [ -z "${hook_stage}" ]; then
|
||||
|
|
@ -32,6 +38,11 @@ for _hook in "/libexec/hooks/${hook_stage}"/*; do
|
|||
zinfo "processing ${_hook}"
|
||||
"${_hook}"
|
||||
_ran_hook="yes"
|
||||
|
||||
if [ "${ONE_SHOT_HOOKS}" -eq 1 ] >/dev/null 2>&1; then
|
||||
zinfo "Disabling hook after execution: ${_hook}"
|
||||
chmod 000 "${_hook}"
|
||||
fi
|
||||
done
|
||||
|
||||
# Return success if at least one hook ran
|
||||
|
|
|
|||
|
|
@ -42,4 +42,5 @@ EOF
|
|||
echo "ZFSBootMenu" > /proc/sys/kernel/hostname
|
||||
|
||||
# https://busybox.net/FAQ.html#job_control
|
||||
exec setsid bash -c "exec /libexec/zfsbootmenu-init <${control_term} >${control_term} 2>&1"
|
||||
ZFSBOOTMENU_CONSOLE=yes exec setsid \
|
||||
bash -c "exec /libexec/zfsbootmenu-init <${control_term} >${control_term} 2>&1"
|
||||
|
|
|
|||
Loading…
Reference in New Issue