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author | pjd <pjd@FreeBSD.org> | 2009-07-29 05:23:52 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2009-07-29 05:23:52 +0000 |
commit | 2ef0bbd3c7fc67e7baf0a4a9f965ab28f0268895 (patch) | |
tree | bb2f6d10d1f0be213d15ebfa8b06ace8086bec75 /etc/rc.d/hostid_save | |
parent | 2e73ad7182c6464ec20ef732baee62264e15b2db (diff) | |
download | FreeBSD-src-2ef0bbd3c7fc67e7baf0a4a9f965ab28f0268895.zip FreeBSD-src-2ef0bbd3c7fc67e7baf0a4a9f965ab28f0268895.tar.gz |
Currently there is a problem with fscking UFS file systems created on
top of ZVOLs. The problem is that rc.d/fsck runs before rc.d/zfs. The
latter makes ZVOLs to appear in /dev/. In such case rc.d/fsck cannot
find devfs entry and aborts. We cannot simply move rc.d/zfs before
rc.d/fsck, because we first want kern.hostid to be configured (by
rc.d/hostid). If we won't wait (hostid will be 0) we can reuse disks
which are in use by different systems (eg. in SAN/NAS environment).
We also cannot move rc.d/hostid before rc.d/fsck, because rc.d/hostid on
first system start stores generated kern.hostuuid in /etc/hostid file,
so it needs root file system to be mounted read-write.
The fix is to split rc.d/hostid so that rc.d/hostid (which will now run
before rc.d/fsck) only generates hostid and sets up sysctls, but doesn't
touch root file system and rc.d/hostid_save (which is run after
rc.d/root) and only creates /etc/hostid file.
With that in place, we can move ZVOL initialization to dedicated
rc.d/zvol script which runs before rc.d/fsck.
PR: conf/120194
Reported by: James Snow <snow@teardrop.org>
Reviewed by: brooks
Approved by: re (kib)
MFC after: 2 weeks
Diffstat (limited to 'etc/rc.d/hostid_save')
-rwxr-xr-x | etc/rc.d/hostid_save | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/etc/rc.d/hostid_save b/etc/rc.d/hostid_save new file mode 100755 index 0000000..44e403f --- /dev/null +++ b/etc/rc.d/hostid_save @@ -0,0 +1,29 @@ +#!/bin/sh +# +# $FreeBSD$ +# + +# PROVIDE: hostid_save +# REQUIRE: root +# BEFORE: mountcritlocal +# KEYWORD: nojail + +. /etc/rc.subr + +name="hostid_save" +start_cmd="hostid_save" +stop_cmd=":" +rcvar="hostid_enable" + +hostid_save() +{ + if [ ! -r ${hostid_file} ]; then + $SYSCTL_N kern.hostuuid > ${hostid_file} + if [ $? -ne 0 ]; then + warn "could not store hostuuid in ${hostid_file}." + fi + fi +} + +load_rc_config $name +run_rc_command "$1" |