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| author | Timo Teräs <timo.teras@iki.fi> | 2015-02-07 22:23:57 +0200 |
|---|---|---|
| committer | Timo Teräs <timo.teras@iki.fi> | 2015-02-07 22:25:15 +0200 |
| commit | e962f2315811c61fe8170cf015da2a17347c37f8 (patch) | |
| tree | 2e6caff26cd71278dc97b8a75bcb5c3db000982e | |
| parent | 955a9c8c8b71e85240363109bbae904e97715b47 (diff) | |
| download | aports-e962f2315811c61fe8170cf015da2a17347c37f8.tar.bz2 aports-e962f2315811c61fe8170cf015da2a17347c37f8.tar.xz | |
main/mkinitfs: overlaytmpfs support
requires 3.18+ kernel
| -rw-r--r-- | main/mkinitfs/0002-support-for-tmpfs-overlay-over-root.patch | 55 | ||||
| -rw-r--r-- | main/mkinitfs/APKBUILD | 3 |
2 files changed, 57 insertions, 1 deletions
diff --git a/main/mkinitfs/0002-support-for-tmpfs-overlay-over-root.patch b/main/mkinitfs/0002-support-for-tmpfs-overlay-over-root.patch new file mode 100644 index 0000000000..cbeeef99e6 --- /dev/null +++ b/main/mkinitfs/0002-support-for-tmpfs-overlay-over-root.patch @@ -0,0 +1,55 @@ +From af4168c70ec5fc1982c83dc22d75de2ba6aa30d8 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi> +Date: Sat, 7 Feb 2015 22:21:32 +0200 +Subject: [PATCH] support for tmpfs overlay over root + +useful if wanting to optimize boot time, and do device updates +via read-only system image. package management is not too useful +in these situations. +--- + features.d/base.modules | 1 + + initramfs-init.in | 14 ++++++++++++-- + 2 files changed, 13 insertions(+), 2 deletions(-) + +diff --git a/features.d/base.modules b/features.d/base.modules +index 038335d..f8f271d 100644 +--- a/features.d/base.modules ++++ b/features.d/base.modules +@@ -1 +1,2 @@ + kernel/drivers/block/loop.ko ++kernel/fs/overlayfs +diff --git a/initramfs-init.in b/initramfs-init.in +index 6357965..fd3e510 100755 +--- a/initramfs-init.in ++++ b/initramfs-init.in +@@ -387,7 +387,8 @@ eval set -- `cat /proc/cmdline` + + myopts="alpine_dev autodetect autoraid chart cryptroot cryptdm debug_init + dma init_args keep_apk_new modules ovl_dev pkgs quiet root_size root +- usbdelay ip alpine_repo apkovl alpine_start splash blacklist" ++ usbdelay ip alpine_repo apkovl alpine_start splash blacklist ++ overlaytmpfs" + + for opt; do + case "$opt" in +@@ -544,7 +545,16 @@ if [ -n "$KOPT_root" ]; then + start_$i + done + ebegin "Mounting root" +- retry_mount -o ro $KOPT_root $sysroot 2>/dev/null ++ if [ "$KOPT_overlaytmpfs" = "yes" ]; then ++ mkdir -p /media/root-ro /media/root-rw $sysroot/media/root-ro $sysroot/media/root-rw ++ retry_mount -o ro $KOPT_root /media/root-ro 2>/dev/null ++ mount -t tmpfs root-tmpfs /media/root-rw ++ mkdir -p /media/root-rw/work /media/root-rw/root ++ mount -t overlay -o lowerdir=/media/root-ro,upperdir=/media/root-rw/root,workdir=/media/root-rw/work overlayfs $sysroot ++ else ++ retry_mount -o ro $KOPT_root $sysroot 2>/dev/null ++ fi ++ + eend $? + cat /proc/mounts | while read DEV DIR TYPE OPTS ; do + if [ "$DIR" != "/" -a "$DIR" != "$sysroot" -a -d "$DIR" ]; then +-- +2.2.2 + diff --git a/main/mkinitfs/APKBUILD b/main/mkinitfs/APKBUILD index efbdc4da89..e09b40233e 100644 --- a/main/mkinitfs/APKBUILD +++ b/main/mkinitfs/APKBUILD @@ -2,7 +2,7 @@ pkgname=mkinitfs pkgver=2.7.1 _ver=${pkgver%_git*} -pkgrel=2 +pkgrel=3 pkgdesc="Tool to generate initramfs images for Alpine" url=http://git.alpinelinux.org/cgit/mkinitfs depends="busybox apk-tools>=2.0 lddtree>=1.25" @@ -10,6 +10,7 @@ install="$pkgname.pre-upgrade" triggers="$pkgname.trigger=/usr/share/kernel/*" source="http://dev.alpinelinux.org/archive/$pkgname/$pkgname-$_ver.tar.xz 0001-init-fix-splash-fifo-and-make-config-file-optional.patch + 0002-support-for-tmpfs-overlay-over-root.patch " arch="noarch" license="GPL-2" |