This patch series expands the RRD format for nodes and VMs. For all types
(nodes, VMs, storage) we adjust the aggregation to align them with the way they
are done on the Backup Server. Therefore, we have new RRD defitions for all
3 types.
New values are added for nodes and VMs. In particular:
Nodes:
* memfree
* arcsize
* pressures:
* cpu some
* io some
* io full
* mem some
* mem full
VMs:
* memhost (memory consumption of all processes in the guests cgroup, host view)
* pressures:
* cpu some
* cpu full
* io some
* io full
* mem some
* mem full
To not lose old RRD data, we need to migrate the old RRD files to the ones with
the new schema. Some initial performance tests showed that migrating 10k VM
RRD files took ~2m40s single threaded. This is way to long to do it within the
pmxcfs itself. Therefore this will be a dedicated step. I wrote a small rust
tool that binds to librrd to to the migraton.
We could include it in a post-install step when upgrading to PVE 9.
To avoid missing data and key errors in the journal, we need to ship some
changes to PVE 8 that can handle the new format sent out by pvestatd. Those
patches are the first in the series and are marked with a "-pve8" postfix in the
repo name.
There is also one patch in the pve-manager part that should also be included in
PVE8. It is marked in the notes!
This series so far only handles migration and any changes needed for the new
fields. It does not yet include any GUI patches to add additional graphs to the
summary pages of nodes and guests. Those are currently being worked on, but are
not yet in a state where I want to send patches.
Plans:
* Add GUI parts:
* Additional graphs, mostly for pressures.
* add more info the memory graph. e.g. ZFS ARC
* add host memory view of guests in graph and gauges
* pve8to9:
* have a check how many RRD files are present and verify that there is enough
space on the root FS
How to test:
1. build pve-cluster with the pve8 patches and install it on all nodes.
2. build all the other packages and install them.
build the migration tool with cargo and copy the binary to the nodes for now.
3. run the migration tool on the first host
4. continue running the migration tool on the other nodes one by one
High level changes since:
RFC:
* drop membuffer and memcached in favor of already present memused and
memavailable
* switch from pve9-{type} to pve-{type}-90 schema in all places
* add patch for PVE8 & 9 that handles different keys in live status to avoid
question marks in the UI
cluster-pve8:
Aaron Lauterer (1):
status: handle new metrics update data
src/pmxcfs/status.c | 85 ++++++++++++++++++++++++++++-----------------
1 file changed, 53 insertions(+), 32 deletions(-)
pve9-rrd-migration-tool:
Aaron Lauterer (1):
introduce rrd migration tool for pve8 -> pve9
cluster:
Aaron Lauterer (3):
cfs status.c: drop old pve2-vm rrd schema support
status: handle new pve9- metrics update data
status: introduce new pve9- rrd and metric format
src/pmxcfs/status.c | 274 +++++++++++++++++++++++++++++++++++++++-----
src/pmxcfs/status.h | 2 +
2 files changed, 250 insertions(+), 26 deletions(-)
common:
Folke Gleumes (2):
fix error in pressure parsing
add functions to retrieve pressures for vm/ct
src/PVE/ProcFSTools.pm | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
manager:
Aaron Lauterer (5):
api2tools: drop old VM rrd schema
api2tools: extract stats: handle existence of new pve-{type}-9.0 data
pvestatd: collect and distribute new pve-{type}-9.0 metrics
api: nodes: rrd and rrddata add decade option and use new pve-node-9.0
rrd files
api2tools: extract_vm_status add new vm memhost column
PVE/API2/Cluster.pm | 7 +
PVE/API2/Nodes.pm | 16 +-
PVE/API2Tools.pm | 47 +++---
PVE/Service/pvestatd.pm | 342 +++++++++++++++++++++++++++++-----------
4 files changed, 293 insertions(+), 119 deletions(-)
storage:
Aaron Lauterer (1):
status: rrddata: use new pve-storage-9.0 rrd location if file is
present
src/PVE/API2/Storage/Status.pm | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
qemu-server:
Aaron Lauterer (3):
vmstatus: add memhost for host view of vm mem consumption
vmstatus: switch mem stat to PSS of VM cgroup
rrddata: use new pve-vm-9.0 rrd location if file is present
Folke Gleumes (1):
metrics: add pressure to metrics
src/PVE/API2/Qemu.pm | 11 ++++++-----
src/PVE/QemuServer.pm | 33 +++++++++++++++++++++++++++++----
2 files changed, 35 insertions(+), 9 deletions(-)
container:
Aaron Lauterer (1):
rrddata: use new pve-vm-9.0 rrd location if file is present
Folke Gleumes (1):
metrics: add pressures to metrics
src/PVE/API2/LXC.pm | 11 ++++++-----
src/PVE/LXC.pm | 8 ++++++++
2 files changed, 14 insertions(+), 5 deletions(-)
Summary over all repositories:
13 files changed, 661 insertions(+), 197 deletions(-)
--
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