[pve-devel] [PATCH installer 1/2] zfs: set canmount=off on /var/lib
Stoiko Ivanov
s.ivanov at proxmox.com
Tue Nov 21 12:09:58 CET 2023
as explained in zfsprops(4) setting canmount to off is similar to
setting mountpoint to none - except that you can still use the dataset
for storing properties to be inherited to children (and we want
/var/lib/vz to have a mountpoint set)
Follows recommendations from upstreams ZFS on / guide:
https://openzfs.github.io/openzfs-docs/Getting%20Started/Debian/Debian%20Bookworm%20Root%20on%20ZFS.html
Fixes: dd19d40ceac179ba18652f1d6c3e4c23f246af00
Signed-off-by: Stoiko Ivanov <s.ivanov at proxmox.com>
---
Proxmox/Install.pm | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Proxmox/Install.pm b/Proxmox/Install.pm
index 1a4ee93..fd9bf84 100644
--- a/Proxmox/Install.pm
+++ b/Proxmox/Install.pm
@@ -189,6 +189,10 @@ sub zfs_create_rpool {
syscmd("zfs create $pool_name/data") == 0 || die "unable to create zfs $pool_name/data volume\n";
syscmd("zfs create -p $pool_name/ROOT/$root_volume_name/var/lib/vz") == 0 ||
die "unable to create zfs $pool_name/ROOT/$root_volume_name/var/lib/vz volume\n";
+ syscmd("zfs set canmount=off $pool_name/ROOT/$root_volume_name/var/lib") == 0 ||
+ die "unable to set canmount property on $pool_name/ROOT/$root_volume_name/var/lib\n";
+ syscmd("zfs set canmount=off $pool_name/ROOT/$root_volume_name/var") == 0 ||
+ die "unable to set canmount property on $pool_name/ROOT/$root_volume_name/var\n";
}
# default to `relatime` on, fast enough for the installer and production
--
2.39.2
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