2b1fbfd4bc
Here the root filesystem is managed by OSTree. OSTree is designed to manage/deploy read-only filesystem. For read-only filesystem, hardlink all files with same content is safe and can save disk space. It is a good principle for readonly folders like /bin, /lib and so on. While "/var" is somehow special that it is designed to store variable data files, it can not be read-only, it must be read-write. Files in "/var" should not be hardlinked together like other folders, break them to make it. Do the same for /usr/homedirs/home as it gets mounted at /var/home at runtime. Test Plan: Pass: build ISO image Pass: In runtime system, no hardlink in /var Story: 2008862 Task: 45966 Related-Bug: #1983580 Change-Id: I1a61f919e0a60f83e27b6c0bf402c20c2d43abb4 Signed-off-by: Zhang Xiao <xiao.zhang@windriver.com>
44 lines
1.8 KiB
Diff
44 lines
1.8 KiB
Diff
From c4eaf35440afe4ef0473b90b32566a05f99dfbd6 Mon Sep 17 00:00:00 2001
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From: Zhang Xiao <xiao.zhang@windriver.com>
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Date: Sat, 6 Aug 2022 12:39:16 +0000
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Subject: [PATCH] init-ostree-install.sh: break hardlinks in /var
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Here the root filesystem is managed by OSTree. OSTree is designed to
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manage/deploy read-only filesystem. For read-only filesystem, hardlink
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all files with same content is safe and can save disk space. It is a
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good principle for readonly folders like /bin, /lib and so on. While
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"/var" is somehow special that it is designed to store variable data
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files, it can not be read-only, it must be read-write. Files in
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"/var" should not be hardlinked together like other folders, break
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them to make it.
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Do the same for /usr/homedirs/home as it gets mounted at /var/home
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at runtime.
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Signed-off-by: Zhang Xiao <xiao.zhang@windriver.com>
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---
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init-ostree-install.sh | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/init-ostree-install.sh b/init-ostree-install.sh
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index 0e5b8f3..f66224d 100644
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--- a/init-ostree-install.sh
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+++ b/init-ostree-install.sh
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@@ -1478,11 +1478,11 @@ else
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mount -o $mount_flags LABEL=fluxdata /var1
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fi
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if [ -d ${PHYS_SYSROOT}/ostree/1/var ] ; then
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- tar -C ${PHYS_SYSROOT}/ostree/1/var/ --xattrs --xattrs-include='*' -cf - . | \
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+ tar -C ${PHYS_SYSROOT}/ostree/1/var/ --hard-dereference --xattrs --xattrs-include='*' -cf - . | \
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tar --xattrs --xattrs-include='*' -xf - -C /var1 2> /dev/null
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fi
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if [ -d ${PHYS_SYSROOT}/ostree/1/usr/homedirs/home ] ; then
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- tar -C ${PHYS_SYSROOT}/ostree/1/usr/homedirs/home --xattrs --xattrs-include='*' -cf - . | \
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+ tar -C ${PHYS_SYSROOT}/ostree/1/usr/homedirs/home --hard-dereference --xattrs --xattrs-include='*' -cf - . | \
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tar --xattrs --xattrs-include='*' -xf - -C /var1/home 2> /dev/null
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fi
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--
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2.32.0
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