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From: Alyssa Ross <hi@alyssa.is>
To: devel@spectrum-os.org
Subject: [PATCH 13/22] host/rootfs: use a bigger test ext partition
Date: Mon, 10 Oct 2022 23:28:53 +0000	[thread overview]
Message-ID: <20221010232909.1953738-14-hi@alyssa.is> (raw)
In-Reply-To: <20221010232909.1953738-1-hi@alyssa.is>

So that we can test things that write to disk.

Unlinking the file prior to starting the VM ensures that it won't
stick around once it's no longer needed.

I disable make's printing of the commands in favour of the shell's,
because the cp can take some time on filesystems that don't support
reflinks, and it's nice to see which command is currently running
rather than all of them at once as make would show.

Signed-off-by: Alyssa Ross <hi@alyssa.is>
---
 host/rootfs/Makefile | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/host/rootfs/Makefile b/host/rootfs/Makefile
index 249af6d..bad52a2 100644
--- a/host/rootfs/Makefile
+++ b/host/rootfs/Makefile
@@ -144,14 +144,20 @@ build/live.img: $(SCRIPTS)/format-uuid.sh $(SCRIPTS)/make-gpt.sh build/rootfs.ve
 	mv $@.tmp $@
 
 run: build/live.img $(EXT_FS) build/rootfs.verity.roothash
-	$(QEMU_KVM) -cpu host -m 2G \
+	@set -x && \
+	ext="$$(mktemp build/spectrum-rootfs-extfs.XXXXXXXXXX.img)" && \
+	cp $(EXT_FS) "$$ext" && \
+	exec 3<>"$$ext" && \
+	rm -f "$$ext" && \
+	truncate -s +10G /proc/self/fd/3 && \
+	exec $(QEMU_KVM) -cpu host -m 2G \
 	    -machine q35,kernel=$(KERNEL),kernel-irqchip=split,initrd=$(INITRAMFS) \
 	    -display gtk,gl=on \
 	    -qmp unix:vmm.sock,server,nowait \
 	    -monitor vc \
 	    -parallel none \
 	    -drive file=build/live.img,if=virtio,format=raw,readonly=on \
-	    -drive file=$(EXT_FS),if=virtio,format=raw,readonly=on \
+	    -drive file=/proc/self/fd/3,if=virtio,format=raw \
 	    -append "console=ttyS0 roothash=$$(< build/rootfs.verity.roothash) ext=/dev/vdb intel_iommu=on" \
 	    -device intel-iommu,intremap=on \
 	    -device virtio-vga-gl \
-- 
2.37.1



  parent reply	other threads:[~2022-10-10 23:33 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-10 23:28 [PATCH 00/22] Implement managing VMs with Nix Alyssa Ross
2022-10-10 23:28 ` [PATCH 01/22] host/start-vm: use MAP_SHARED memory for VMs Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 02/22] host/start-vm: implement shared directories Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 03/22] host/rootfs: generate virtiofsd services Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 04/22] Documentation: explain VM shared directories Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 05/22] vm-lib/make-vm.nix: support " Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 06/22] img/app: add support for testing virtiofs Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 07/22] img/app: don't block app startup on network online Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 08/22] img/app: auto-mount virtiofs0 filesystem Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 09/22] vm/app/mg.nix: init Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 10/22] vm/app/mg.nix: open virtio filesystem in dired Alyssa Ross
2023-02-26 19:17   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 11/22] host/rootfs: move ext mounting to s6-rc service Alyssa Ross
2022-11-14  1:14   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 12/22] host/rootfs: automatically grow user partition Alyssa Ross
2022-11-14  1:14   ` Alyssa Ross
2022-10-10 23:28 ` Alyssa Ross [this message]
2022-11-14  1:14   ` [PATCH 13/22] host/rootfs: use a bigger test ext partition Alyssa Ross
2022-10-10 23:28 ` [PATCH 14/22] host/initramfs/extfs.nix: tar2ext4 -> mkfs.ext4 -d Alyssa Ross
2022-11-14  1:14   ` Alyssa Ross
2022-10-10 23:28 ` [PATCH 15/22] host/start-vm: resolve VM symlinks with /ext root Alyssa Ross
2022-10-10 23:28 ` [PATCH 16/22] host/rootfs: " Alyssa Ross
2022-10-10 23:28 ` [PATCH 17/22] Documentation: explain /ext symlink resolution Alyssa Ross
2022-10-10 23:28 ` [PATCH 18/22] host/start-vm: increase memory size to 512M Alyssa Ross
2022-10-10 23:28 ` [PATCH 19/22] vm/app/nix: add Alyssa Ross
2022-10-10 23:29 ` [PATCH 20/22] vm-lib/make-vms.nix: add Alyssa Ross
2022-10-10 23:29 ` [PATCH 21/22] host/initramfs/extfs.nix: add example Nix-built VM Alyssa Ross
2022-10-10 23:29 ` [PATCH 22/22] Documentation: add how-to guide for Nix-built VMs Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 0/6] Introduce a shared base for application VMs Alyssa Ross
2022-10-10 23:37   ` Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 1/6] host/start-vm: support multiple block devices Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 2/6] scripts/make-gpt.sh: add support for labels Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 3/6] vm: build GPT images Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 4/6] host/start-vm: boot using partition label Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 5/6] release: rename from "img" Alyssa Ross
2022-10-10 23:29 ` [PATCH v2 6/6] img/app: extract from appvm-{lynx,catgirl} Alyssa Ross

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