71 lines
2.5 KiB
Diff
71 lines
2.5 KiB
Diff
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From 8be5a0fa945d130ef8ebb464ebbe1a865949353d Mon Sep 17 00:00:00 2001
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From: Vivek Goyal <vgoyal@redhat.com>
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Date: Tue, 15 May 2012 13:36:11 -0400
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Subject: [PATCH] dracut:fstab-sys: Wait for devices specified using --mount
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option
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dracut allows passing --mount option which mounts the specified devices.
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But it does not wait for these devices to show up and mounting will fail
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if devices do not show up by the time "mount" was called.
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I am writing some patches to support kdump on iscsi target and I noticed
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that one of the initqueue script was not called as we found the root
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device and broke out of main loop.
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There are two possible enancements to this patch.
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- Introduce a time limited wait (rd.timeout something along the lines of
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rd.retry). That will allow kdump to try to dump to a backup target if
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primary targets fails to come up.
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- Wait for UUID= and LABEL= to show up too. Right now kdump converts
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UUID= and LABEL= to respective devices and passes /dev/* to dracut
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--mount option. So I am not introducing the wait for UUID= or LABEL=
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in this patch.
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Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
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---
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modules.d/95fstab-sys/module-setup.sh | 1 +
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modules.d/95fstab-sys/wait-mount-dev.sh | 22 ++++++++++++++++++++++
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2 files changed, 23 insertions(+)
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create mode 100644 modules.d/95fstab-sys/wait-mount-dev.sh
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diff --git a/modules.d/95fstab-sys/module-setup.sh b/modules.d/95fstab-sys/module-setup.sh
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index 7589d74..56dd8fc 100755
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--- a/modules.d/95fstab-sys/module-setup.sh
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+++ b/modules.d/95fstab-sys/module-setup.sh
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@@ -13,4 +13,5 @@ depends() {
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install() {
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[ -f /etc/fstab.sys ] && inst /etc/fstab.sys
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inst_hook pre-pivot 00 "$moddir/mount-sys.sh"
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+ inst_hook cmdline 00 "$moddir/wait-mount-dev.sh"
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}
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diff --git a/modules.d/95fstab-sys/wait-mount-dev.sh b/modules.d/95fstab-sys/wait-mount-dev.sh
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new file mode 100644
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index 0000000..99fc16c
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--- /dev/null
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+++ b/modules.d/95fstab-sys/wait-mount-dev.sh
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@@ -0,0 +1,22 @@
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+#!/bin/sh
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+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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+# ex: ts=8 sw=4 sts=4 et filetype=sh
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+
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+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
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+type det_fs >/dev/null 2>&1 || . /lib/fs-lib.sh
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+
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+fstab_wait_dev() {
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+ local _dev _mp _fs _opts _dump _pass _rest
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+ test -e "$1" || return 1
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+ while read _dev _mp _fs _opts _dump _pass _rest; do
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+ [ -z "${_dev%%#*}" ] && continue # Skip comment lines
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+ case "$_dev" in
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+ /dev/?*)
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+ wait_for_dev $_dev;;
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+ *) ;;
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+ esac
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+ done < $1
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+ return 0
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+}
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+
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+[ -f /etc/fstab ] && fstab_wait_dev /etc/fstab
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