Bootloader
~~~~~~~~~~
-Depending on whether the system is booted in EFI or legacy BIOS mode the
-{pve} installer sets up either `grub` or `systemd-boot` as main bootloader.
-See the chapter on xref:sysboot[{pve} host bootladers] for details.
+{pve} uses xref:sysboot_proxmox_boot_tool[`proxmox-boot-tool`] to manage the
+bootloader configuration.
+See the chapter on xref:sysboot[{pve} host bootloaders] for details.
ZFS Administration
.Changing a failed bootable device
-Depending on how {pve} was installed it is either using `grub` or `systemd-boot`
-as bootloader (see xref:sysboot[Host Bootloader]).
+Depending on how {pve} was installed it is either using `proxmox-boot-tool`
+footnote:[Systems installed with {pve} 6.4 or later, EFI systems installed with
+{pve} 5.4 or later] or plain `grub` as bootloader (see
+xref:sysboot[Host Bootloader]). You can check by running:
+
+----
+# proxmox-boot-tool status
+----
The first steps of copying the partition table, reissuing GUIDs and replacing
the ZFS partition are the same. To make the system bootable from the new disk,
NOTE: Use the `zpool status -v` command to monitor how far the resilvering
process of the new disk has progressed.
-.With `systemd-boot`:
+.With `proxmox-boot-tool`:
----
-# pve-efiboot-tool format <new disk's ESP>
-# pve-efiboot-tool init <new disk's ESP>
+# proxmox-boot-tool format <new disk's ESP>
+# proxmox-boot-tool init <new disk's ESP>
----
NOTE: `ESP` stands for EFI System Partition, which is setup as partition #2 on
bootable disks setup by the {pve} installer since version 5.4. For details, see
-xref:sysboot_systemd_boot_setup[Setting up a new partition for use as synced ESP].
+xref:sysboot_proxmox_boot_setup[Setting up a new partition for use as synced ESP].
.With `grub`:
----
To activate the daemon it is necessary to edit `/etc/zfs/zed.d/zed.rc` with your
-favourite editor, and uncomment the `ZED_EMAIL_ADDR` setting:
+favorite editor, and uncomment the `ZED_EMAIL_ADDR` setting:
--------
ZED_EMAIL_ADDR="root"
This example setting limits the usage to 8 GiB ('8 * 2^30^').
+IMPORTANT: In case your desired +zfs_arc_max+ value is lower than or equal to
++zfs_arc_min+ (which defaults to 1/32 of the system memory), +zfs_arc_max+ will
+be ignored unless you also set +zfs_arc_min+ to at most +zfs_arc_max - 1+.
+
+----
+echo "$[8 * 1024*1024*1024 - 1]" >/sys/module/zfs/parameters/zfs_arc_min
+echo "$[8 * 1024*1024*1024]" >/sys/module/zfs/parameters/zfs_arc_max
+----
+
+This example setting (temporarily) limits the usage to 8 GiB ('8 * 2^30^') on
+systems with more than 256 GiB of total memory, where simply setting
++zfs_arc_max+ alone would not work.
+
[IMPORTANT]
====
If your root file system is ZFS, you must update your initramfs every
We strongly recommend to use enough memory, so that you normally do not
run into low memory situations. Should you need or want to add swap, it is
-preferred to create a partition on a physical disk and use it as swapdevice.
+preferred to create a partition on a physical disk and use it as a swap device.
You can leave some space free for this purpose in the advanced options of the
installer. Additionally, you can lower the
``swappiness'' value. A good value for servers is 10: