xentop-ng v0.5.0

What's new

Numbers you can trust: xentop-ng no longer shows a spike, a zero or a
complete-looking total when it didn't actually measure one.

Changed

• --batch JSON: host.pcpu_busy entries can be null (a core without
  a baseline yet), and a source in "sources" can be partial. New
  fields say how complete each figure is: disk_samples (host, domain,
  SR) and host.pcpu_samples count devices with a valid interval
  (available of total, plus pending new disks);
  sources.vbd_latency_coverage and sources.steal_coverage do the same
  for latency and steal. VBDs gain stats_valid, warming_up and
  collection_error; domains gain baseline_reset. See
  Batch mode.
• Totals missing some disks or pCPUs are marked * and raise the header's
  ◐ marker; with none they show -. History graphs show a dotted gap for
  a missing sample instead of drawing it as idle, and keep the sum of the
  disks that were measured.
• Steal time available for only some domains now raises the ◐ marker
  (missing steal still doesn't: that depends on the hypervisor).

Fixed

• A hung hypervisor or xenstore call froze the whole interface. Sampling
  now runs on its own thread: keys keep working, the header shows how
  stale the data is, and q quits at once.
• When xentop-ng can't start (no Xen, missing library), it prints why and
  exits before taking over the terminal.
• A rebooted VM, or another VM reusing its domain ID, could inherit the
  old one's history, or show a CPU or disk spike computed across the two.
  VMs are now recognised by their xenstore UUID (no xapi needed), so a
  rename keeps the history and a different VM starts afresh.
• Disk rates spanning a failed read, a counter reset or a swapped VDI
  could show huge or bogus values; that interval is now skipped. A disk
  read failure shows as read! in the details instead of being added to
  the disk's I/O error count.
• Booting a VM no longer flags its disks as failing for the ~15 s before
  the guest's PV driver connects; they wait for a baseline like a new disk.
• A pCPU going offline or online could wipe or mix up the cores' history
  graphs, and showed a newly online core at 100%.
• An unreadable /proc/net/dev was reported as "no VIFs" instead of
  missing data.

Security

• New libxenstat patch 0005:
  libxenstat reads tapdisk's stats from world-writable /dev/shm with a
  plain fopen(), so a symlink, FIFO or crafted file there could hang or
  mislead a root monitor. The patch only accepts root-owned, non-writable,
  regular files with a valid record. xentop-ng's own fallback already did;
  this protects libxenstat itself, so apply it if you replace libxenstat.

Downloads

• xentop-ng-v0.5.0-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.5.0-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.5.0-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.
• xentop-ng-v0.5.0-aarch64-linux-gnu.tar.gz and
  xentop-ng-v0.5.0-riscv64-linux-gnu.tar.gz: the same for arm64
  (glibc 2.17 or newer) and riscv64 (glibc 2.27 or newer) dom0s.
  Tested under qemu-user only so far; reports from real hosts welcome.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.4.1

What's new

Fixed

• The SR view (v) lists the SRs plugged into the host even when no VM
  uses them, instead of "no storage mapping (xenstore)" on a host with no
  running VM (#6).
  They come from xapi; DVD drives, removable media and ISO libraries are
  left out. Without xapi, an empty view now says no VM disk is active,
  and "no storage mapping" only shows when disks can't be mapped.

Security

• --lib PATH as root loaded the path as given after checking the file it
  resolved to. If the path went through a symlink in a directory its owner
  controls, the symlink could be swapped in between and another library
  loaded as root (relevant when xentop-ng is granted through sudo). It now
  loads the file it checked.

Internal

• Code reorganised with no change in behavior: the UI is split into one
  file per panel, the Xen libraries are loaded in one place, and reading
  libxenstat is separate from filling its gaps (now unit-tested).

Downloads

• xentop-ng-v0.4.1-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.4.1-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.4.1-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.
• xentop-ng-v0.4.1-aarch64-linux-gnu.tar.gz and
  xentop-ng-v0.4.1-riscv64-linux-gnu.tar.gz: the same for arm64
  (glibc 2.17 or newer) and riscv64 (glibc 2.27 or newer) dom0s.
  Tested under qemu-user only so far; reports from real hosts welcome.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.4.0

What's new

Added

• Downloads for arm64 (aarch64-linux-gnu, glibc 2.17 or newer) and
  RISC-V (riscv64-linux-gnu, glibc 2.27 or newer) dom0s. They are
  cross-built, and each release runs the test suite and the demo under
  qemu-user; they haven't been tried on a real Arm or RISC-V Xen host yet:
  reports are welcome, see Architectures.

Downloads

• xentop-ng-v0.4.0-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.4.0-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.4.0-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.
• xentop-ng-v0.4.0-aarch64-linux-gnu.tar.gz and
  xentop-ng-v0.4.0-riscv64-linux-gnu.tar.gz: the same for arm64
  (glibc 2.17 or newer) and riscv64 (glibc 2.27 or newer) dom0s.
  Tested under qemu-user only so far; reports from real hosts welcome.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.3.2

What's new

Fixed

• Domain names are no longer cut while there is room to show them:
  • the mem box cut them at 12 characters; names now get as much room as
    the longest one needs, up to half the row, so a wide mem box (cpu box
    hidden with 1) shows them in full;
  • the same in the cpu box's "top domains" list (stock libxenstat),
    which cut them at 9;
  • the domain table's NAME column grew by at most 12 columns; it now
    grows to the longest name, leaving the CPU history at least half of
    the spare width. Long names never push other columns out;
  • SR names in the SR view (v) use the width left over past 20
    columns;
  • these widths grow at once but shrink only after 30 s, so short-lived
    VMs (CI jobs, backups) don't shift the columns as they come and go.

Downloads

• xentop-ng-v0.3.2-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.3.2-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.3.2-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.3.1

What's new

Changed

• Screenshots of the 0.3.0 features in the README (SR view, domain
  details), and a refreshed tour GIF.
• Release notes on GitHub now include the release's CHANGELOG entry.

Downloads

• xentop-ng-v0.3.1-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.3.1-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.3.1-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.3.0

Downloads

• xentop-ng-v0.3.0-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.3.0-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.3.0-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.2.2

Downloads

• xentop-ng-v0.2.2-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.2.2-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.2.2-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.2.1

Downloads

• xentop-ng-v0.2.1-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.2.1-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.2.1-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.2.0

Downloads

• xentop-ng-v0.2.0-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.2.0-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.2.0-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.

xentop-ng v0.1.2

Downloads

• xentop-ng-v0.1.2-xcp-ng-8.3.tar.gz: for XCP-ng 8.3. Includes the
  patched libxenstat (used only through the xtop launcher) and an
  installer: tar xzf … && cd xentop-ng-v0.1.2-xcp-ng-8.3 && ./install.sh,
  then run /opt/xentop-ng/bin/xtop.
• xentop-ng-v0.1.2-x86_64-linux-gnu.tar.gz: the binary alone, for
  any x86_64 Linux dom0 with glibc 2.17 or newer. It uses the system
  libxenstat and fills gaps with built-in fallbacks.

Verify: sha256sum -c SHA256SUMS and
gh attestation verify <file> --repo olivierlambert/xentop-ng.