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From 29a24ab28e9790680348b1ffab653a321fa49a67 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 26 Mar 2021 22:40:40 +0100
Subject: [PATCH] fstab-generator: if usr= is specified, mount it to
/sysusr/usr/ first.
This reverts 29a24ab28e9790680348b1ffab653a321fa49a67
Reason: In systemd 249, at initrd stage, /usr fs will be mounted on /sysroot, or on /sysusr.
This will cause sysroot.mount to be run ahead of time. But at this time, the lvm of extra file directory is inactive,
This will make the crashed system have to wait 5 minutes. So we revert the commit, and don't mount sysroot in advance.
Conflict:NA
Reference:https://github.com/systemd/systemd/commit/29a24ab28e9790680348b1ffab653a321fa49a67
---
src/basic/special.h | 1 -
src/fstab-generator/fstab-generator.c | 90 ++++----------------------
units/initrd-usr-fs.target | 17 -----
units/initrd.target | 4 +-
units/meson.build | 1 -
units/systemd-repart.service.in | 2 +-
units/systemd-volatile-root.service.in | 2 +-
7 files changed, 17 insertions(+), 100 deletions(-)
delete mode 100644 units/initrd-usr-fs.target
diff --git a/src/basic/special.h b/src/basic/special.h
index 78f22f1..8b01df8 100644
--- a/src/basic/special.h
+++ b/src/basic/special.h
@@ -37,7 +37,6 @@
#define SPECIAL_INITRD_FS_TARGET "initrd-fs.target"
#define SPECIAL_INITRD_ROOT_DEVICE_TARGET "initrd-root-device.target"
#define SPECIAL_INITRD_ROOT_FS_TARGET "initrd-root-fs.target"
-#define SPECIAL_INITRD_USR_FS_TARGET "initrd-usr-fs.target"
#define SPECIAL_REMOTE_FS_TARGET "remote-fs.target" /* LSB's $remote_fs */
#define SPECIAL_REMOTE_FS_PRE_TARGET "remote-fs-pre.target"
#define SPECIAL_SWAP_TARGET "swap.target"
diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c
index a4e3ea5..54bfbc2 100644
--- a/src/fstab-generator/fstab-generator.c
+++ b/src/fstab-generator/fstab-generator.c
@@ -758,10 +758,6 @@ static int add_sysroot_mount(void) {
static int add_sysroot_usr_mount(void) {
_cleanup_free_ char *what = NULL;
const char *opts;
- int r;
-
- /* Returns 0 if we didn't do anything, > 0 if we either generated a unit for the /usr/ mount, or we
- * know for sure something else did */
if (!arg_usr_what && !arg_usr_fstype && !arg_usr_options)
return 0;
@@ -785,23 +781,8 @@ static int add_sysroot_usr_mount(void) {
return log_oom();
}
- if (isempty(arg_usr_what)) {
- log_debug("Could not find a usr= entry on the kernel command line.");
+ if (!arg_usr_what)
return 0;
- }
-
- if (streq(arg_usr_what, "gpt-auto")) {
- /* This is handled by the gpt-auto generator */
- log_debug("Skipping /usr/ directory handling, as gpt-auto was requested.");
- return 1; /* systemd-gpt-auto-generator will generate a unit for this, hence report that a
- * unit file is being created for the host /usr/ mount. */
- }
-
- if (path_equal(arg_usr_what, "/dev/nfs")) {
- /* This is handled by the initrd (if at all supported, that is) */
- log_debug("Skipping /usr/ directory handling, as /dev/nfs was requested.");
- return 1; /* As above, report that NFS code will create the unit */
- }
what = fstab_node_to_udev_node(arg_usr_what);
if (!what)
@@ -814,62 +795,17 @@ static int add_sysroot_usr_mount(void) {
else
opts = arg_usr_options;
- /* When mounting /usr from the initrd, we add an extra level of indirection: we first mount the /usr/
- * partition to /sysusr/usr/, and then afterwards bind mount that to /sysroot/usr/. We do this so
- * that we can cover for systems that initially only have a /usr/ around and where the root fs needs
- * to be synthesized, based on configuration included in /usr/, e.g. systemd-repart. Software like
- * this should order itself after initrd-usr-fs.target and before initrd-fs.target; and it should
- * look into both /sysusr/ and /sysroot/ for the configuration data to apply. */
-
- log_debug("Found entry what=%s where=/sysusr/usr type=%s opts=%s", what, strna(arg_usr_fstype), strempty(opts));
-
- r = add_mount(arg_dest,
- what,
- "/sysusr/usr",
- NULL,
- arg_usr_fstype,
- opts,
- is_device_path(what) ? 1 : 0, /* passno */
- 0,
- SPECIAL_INITRD_USR_FS_TARGET,
- "/proc/cmdline");
- if (r < 0)
- return r;
-
- log_debug("Synthesizing entry what=/sysusr/usr where=/sysrootr/usr opts=bind");
-
- r = add_mount(arg_dest,
- "/sysusr/usr",
- "/sysroot/usr",
- NULL,
- NULL,
- "bind",
- 0,
- 0,
- SPECIAL_INITRD_FS_TARGET,
- "/proc/cmdline");
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static int add_sysroot_usr_mount_or_fallback(void) {
- int r;
-
- r = add_sysroot_usr_mount();
- if (r != 0)
- return r;
-
- /* OK, so we didn't write anything out for /sysusr/usr/ nor /sysroot/usr/. In this case, let's make
- * sure that initrd-usr-fs.target is at least ordered after sysroot.mount so that services that order
- * themselves get the guarantee that /usr/ is definitely mounted somewhere. */
-
- return generator_add_symlink(
- arg_dest,
- SPECIAL_INITRD_USR_FS_TARGET,
- "requires",
- "sysroot.mount");
+ log_debug("Found entry what=%s where=/sysroot/usr type=%s", what, strna(arg_usr_fstype));
+ return add_mount(arg_dest,
+ what,
+ "/sysroot/usr",
+ NULL,
+ arg_usr_fstype,
+ opts,
+ is_device_path(what) ? 1 : 0, /* passno */
+ 0,
+ SPECIAL_INITRD_FS_TARGET,
+ "/proc/cmdline");
}
static int add_volatile_root(void) {
@@ -1031,7 +967,7 @@ static int run(const char *dest, const char *dest_early, const char *dest_late)
if (in_initrd()) {
r = add_sysroot_mount();
- r2 = add_sysroot_usr_mount_or_fallback();
+ r2 = add_sysroot_usr_mount();
r3 = add_volatile_root();
} else
diff --git a/units/initrd-usr-fs.target b/units/initrd-usr-fs.target
deleted file mode 100644
index 7219655..0000000
--- a/units/initrd-usr-fs.target
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# This file is part of systemd.
-#
-# systemd is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-
-[Unit]
-Description=Initrd /usr File System
-Documentation=man:systemd.special(7)
-AssertPathExists=/etc/initrd-release
-OnFailure=emergency.target
-OnFailureJobMode=replace-irreversibly
-DefaultDependencies=no
-Conflicts=shutdown.target
diff --git a/units/initrd.target b/units/initrd.target
index fc8fbff..655158a 100644
--- a/units/initrd.target
+++ b/units/initrd.target
@@ -14,6 +14,6 @@ OnFailure=emergency.target
OnFailureJobMode=replace-irreversibly
AssertPathExists=/etc/initrd-release
Requires=basic.target
-Wants=initrd-root-fs.target initrd-root-device.target initrd-fs.target initrd-usr-fs.target initrd-parse-etc.service
-After=initrd-root-fs.target initrd-root-device.target initrd-fs.target initrd-usr-fs.target basic.target rescue.service rescue.target
+Wants=initrd-root-fs.target initrd-root-device.target initrd-fs.target initrd-parse-etc.service
+After=initrd-root-fs.target initrd-root-device.target initrd-fs.target basic.target rescue.service rescue.target
AllowIsolate=yes
diff --git a/units/meson.build b/units/meson.build
index df6741b..31fedf5 100644
--- a/units/meson.build
+++ b/units/meson.build
@@ -38,7 +38,6 @@ units = [
['initrd-switch-root.service', 'ENABLE_INITRD'],
['initrd-switch-root.target', 'ENABLE_INITRD'],
['initrd-udevadm-cleanup-db.service', 'ENABLE_INITRD'],
- ['initrd-usr-fs.target', 'ENABLE_INITRD'],
['initrd.target', 'ENABLE_INITRD'],
['kexec.target', ''],
['ldconfig.service', 'ENABLE_LDCONFIG',
diff --git a/units/systemd-repart.service.in b/units/systemd-repart.service.in
index 92e0a9b..f39a990 100644
--- a/units/systemd-repart.service.in
+++ b/units/systemd-repart.service.in
@@ -12,7 +12,7 @@ Description=Repartition Root Disk
Documentation=man:systemd-repart.service(8)
DefaultDependencies=no
Conflicts=shutdown.target
-After=initrd-usr-fs.target
+After=sysroot.mount
Before=initrd-root-fs.target shutdown.target
ConditionVirtualization=!container
ConditionDirectoryNotEmpty=|/usr/lib/repart.d
diff --git a/units/systemd-volatile-root.service.in b/units/systemd-volatile-root.service.in
index 5a0ec89..37eb23c 100644
--- a/units/systemd-volatile-root.service.in
+++ b/units/systemd-volatile-root.service.in
@@ -12,7 +12,7 @@ Description=Enforce Volatile Root File Systems
Documentation=man:systemd-volatile-root.service(8)
DefaultDependencies=no
Conflicts=shutdown.target
-After=sysroot.mount sysroot-usr.mount systemd-repart.service
+After=sysroot.mount systemd-repart.service
Before=initrd-root-fs.target shutdown.target
AssertPathExists=/etc/initrd-release
--
2.33.0
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