From: Stefan Reiter <s.reiter@proxmox.com>
To: pbs-devel@lists.proxmox.com
Subject: [pbs-devel] [PATCH proxmox-backup 3/5] file-restore: increase RAM for ZFS and disable ARC
Date: Wed, 16 Jun 2021 12:55:50 +0200 [thread overview]
Message-ID: <20210616105552.2594536-4-s.reiter@proxmox.com> (raw)
In-Reply-To: <20210616105552.2594536-1-s.reiter@proxmox.com>
Even through best efforts at keeping it small, including the ZFS tools
in the initramfs seems to have exhausted the small overhead we had left
- give it a bit more RAM to compensate.
Also disable the ZFS ARC, as it's no use in such a memory constrained
environment, and we cache on the QEMU/rust layer anyway.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
src/bin/proxmox_file_restore/qemu_helper.rs | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/src/bin/proxmox_file_restore/qemu_helper.rs b/src/bin/proxmox_file_restore/qemu_helper.rs
index c9d816ca..64d8e909 100644
--- a/src/bin/proxmox_file_restore/qemu_helper.rs
+++ b/src/bin/proxmox_file_restore/qemu_helper.rs
@@ -188,11 +188,10 @@ pub async fn start_vm(
"-initrd",
&ramfs_path,
"-append",
- if debug {
- "debug panic=1"
- } else {
- "quiet panic=1"
- },
+ &format!(
+ "{} panic=1 zfs_arc_min=0 zfs_arc_max=0",
+ if debug { "debug" } else { "quiet" }
+ ),
"-daemonize",
"-pidfile",
&format!("/dev/fd/{}", pid_fd.as_raw_fd()),
@@ -240,9 +239,9 @@ pub async fn start_vm(
} else {
// add more RAM if many drives are given
match id {
- f if f < 10 => 128,
- f if f < 20 => 192,
- _ => 256,
+ f if f < 10 => 192,
+ f if f < 20 => 256,
+ _ => 384,
}
};
--
2.30.2
next prev parent reply other threads:[~2021-06-16 10:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 10:55 [pbs-devel] [PATCH 0/5] ZFS support for single file restore Stefan Reiter
2021-06-16 10:55 ` [pbs-devel] [PATCH proxmox-backup-restore-image 1/5] debian: update control for bullseye Stefan Reiter
2021-06-16 10:55 ` [pbs-devel] [PATCH proxmox-backup-restore-image 2/5] build custom ZFS tools without udev requirement Stefan Reiter
2021-06-16 10:55 ` Stefan Reiter [this message]
2021-06-16 10:55 ` [pbs-devel] [PATCH proxmox-backup 4/5] file-restore/disk: support ZFS pools Stefan Reiter
2021-06-16 10:55 ` [pbs-devel] [PATCH proxmox-backup 5/5] file-restore/disk: support ZFS subvols with mountpoint=legacy Stefan Reiter
2021-06-28 12:26 ` [pbs-devel] applied-series: [PATCH 0/5] ZFS support for single file restore Thomas Lamprecht
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