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From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Thu, 25 Jan 2024 15:41:45 +0100
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Subject: [pve-devel] [RFC guest-common 09/13] vzdump: schema: add fleecing
property string
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It's a property string, because that avoids having an implicit
"enabled" as part of a 'fleecing-storage' property. And there likely
will be more options in the future, e.g. threshold/limit for the
fleecing image size.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
src/PVE/VZDump/Common.pm | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/src/PVE/VZDump/Common.pm b/src/PVE/VZDump/Common.pm
index 5be87a0..60574e4 100644
--- a/src/PVE/VZDump/Common.pm
+++ b/src/PVE/VZDump/Common.pm
@@ -33,6 +33,7 @@ my $dowhash_to_dow = sub {
};
our $PROPERTY_STRINGS = {
+ 'fleecing' => 'backup-fleecing',
'performance' => 'backup-performance',
'prune-backups' => 'prune-backups',
};
@@ -79,6 +80,24 @@ sub parse_dow {
return $res;
};
+PVE::JSONSchema::register_format('backup-fleecing', {
+ enabled => {
+ description => "Enable backup fleecing. Cache backup data from blocks where new guest "
+ ."writes happen on specified storage instead of copying them directly to the backup "
+ ."target. This can help guest IO performance and even prevent hangs, at the cost of "
+ ."requiring more storage space.",
+ type => 'boolean',
+ default => 0,
+ optional => 1,
+ default_key => 1,
+ },
+ storage => get_standard_option('pve-storage-id', {
+ description => "Use this storage to storage fleecing images. Default is to use the same "
+ ."storage as the VM disk itself.",
+ optional => 1,
+ }),
+});
+
PVE::JSONSchema::register_format('backup-performance', {
'max-workers' => {
description => "Applies to VMs. Allow up to this many IO workers at the same time.",
@@ -262,6 +281,12 @@ my $confdesc = {
format => 'backup-performance',
optional => 1,
},
+ fleecing => {
+ type => 'string',
+ description => "Options for backup fleecing (VM only).",
+ format => 'backup-fleecing',
+ optional => 1,
+ },
lockwait => {
type => 'integer',
description => "Maximal time to wait for the global lock (minutes).",
--
2.39.2