Disk Partition - SS67/project-docs GitHub Wiki

Good — and the diagnostics changed two things worth noting before the commands.

Reading your output

fuser -vm /var/log was misleading. -m resolves to the filesystem containing the path, and /var/log isn't its own mount yet — so it listed every process on /, including kernel threads. Ignore it. Your lsof +D output is the real answer.

The real writers, and what to do with each:

Process What it is Handling
systemd-j journald Stop before swap
rsyslogd syslog Stop before swap
java Burp agent Stop before swap
wdavdaemon MS Defender for Endpoint Restart after — don't stop
winbindd AD/Samba Restart after — don't stop
vmtoolsd VMware Tools Restart after
unattende unattended-upgrades Restart after
bash your shell cd out of /var/log first

The bottom group only needs to reopen its file handles. Stopping winbindd on an AD-joined box (your /run/user/2113802 UIDs confirm domain accounts) risks breaking authentication mid-procedure — restarting it after the mount is both safer and sufficient. Same logic for Defender, which may have tamper protection on the unit anyway.

auditd inactive → skip that step entirely.

572M → the rsync is seconds, not minutes. Total logging gap will be well under a minute.

Before you start: run this in tmux/screen, and have a second root session open. If winbind hiccups you don't want to be locked out mid-swap.

Pre-flight

cd /            # ensure no shell has cwd inside /var/log
vgs; lvs -a     # confirm 141.4G free, no LVs

1. Create the volume

lvcreate -L 40G -n lv_varlog vg00
mkfs.ext4 -m 1 -L varlog /dev/vg00/lv_varlog
lvs

2. First copy (everything still running)

mkdir -p /mnt/newlog
mount /dev/vg00/lv_varlog /mnt/newlog
rsync -aHAXx --info=progress2 /var/log/ /mnt/newlog/

Trailing slashes matter.

3. Stop the primary writers

systemctl stop burpsuiteenterpriseedition_agent.service
systemctl stop rsyslog.service rsyslog.socket

journalctl --sync
journalctl --flush
systemctl stop systemd-journald.service systemd-journald.socket \
               systemd-journald-dev-log.socket systemd-journald-audit.socket

4. Delta sync and swap

rsync -aHAXx --delete /var/log/ /mnt/newlog/
umount /mnt/newlog

mv /var/log /var/log.old
mkdir /var/log
mount /dev/vg00/lv_varlog /var/log

chown root:syslog /var/log
chmod 775 /var/log
stat -c '%a %U %G' /var/log     # must read: 775 root syslog

5. Restart everything

systemctl start systemd-journald.socket systemd-journald.service
systemctl start rsyslog.service
systemctl start burpsuiteenterpriseedition_agent.service

# reopen handles on the new filesystem
systemctl restart vmtoolsd.service
systemctl restart winbind.service
systemctl restart mdatp.service          # Defender; verify name first

Check the Defender unit name — systemctl list-units --all | grep -i mdatp. If it refuses to restart due to tamper protection, leave it; it'll reopen on next log rotation or reboot. Harmless.

6. Persist in fstab

blkid /dev/vg00/lv_varlog

Add, substituting your UUID:

UUID=<uuid>  /var/log  ext4  defaults,nofail  0 2

nofail is deliberate — if the VG ever fails to activate at boot you get a running VM with /var/log on root, rather than an emergency shell.

Test before any reboot:

findmnt /var/log
mount -a && echo "fstab OK"

7. Verify

df -h /var/log /
findmnt /var/log

logger "LV migration test $(date)"
tail -3 /var/log/syslog
journalctl -n 5 --no-pager

systemctl status burpsuiteenterpriseedition_agent --no-pager
ls -la /var/log/BurpSuiteEnterpriseEdition/

# nothing still writing to the old tree
lsof +D /var/log.old 2>/dev/null
id <a-domain-user>      # confirm winbind healthy

That lsof +D /var/log.old should come back empty. If a process still shows up, restart it — otherwise it's writing into a hidden directory and you'll lose those logs.

8. Reclaim after 24–48h

du -sh /var/log.old
rm -rf /var/log.old

Rollback

systemctl stop burpsuiteenterpriseedition_agent rsyslog systemd-journald
umount /var/log && rmdir /var/log
mv /var/log.old /var/log
# remove the fstab line
systemctl start systemd-journald rsyslog burpsuiteenterpriseedition_agent

Root filesystem is never touched, so this is clean at any point.

Close the loop

sed -i 's/^#\?SystemMaxUse=.*/SystemMaxUse=2G/' /etc/systemd/journald.conf
systemctl restart systemd-journald

The 40G LV bounds the blast radius, but the agent that wrote 36G is still capable of writing 40G. Two remaining items:

  1. Configure the agent's own rolling appender (logback/log4j under the Burp install) — size-based, e.g. 100MB × 10. For a JVM this is the correct fix; logrotate copytruncate misbehaves because the process keeps its file offset and produces a sparse file that silently refills.
  2. Find out why it emitted 36G. That's an error loop, not normal volume — typically the agent failing to reach the Enterprise server, a DB connection failure, or a cert problem. Rotation without fixing this just means you overwrite the evidence hourly.

And 101G still free in vg00 if Burp's scan data turns out to want its own volume later.

Paste this as the opening message of the first chat. It reads, verifies, proves knowledge, then produces the scoped handoff.

Read AGENT.md, HANDOFF.md, FSSANDBOX.md, TRACKER.md from project files
end to end before responding. Then do exactly three things in one reply.

Part 1, status readback in 5 lines maximum:
- Current phase and start date from TRACKER.md
- Top 3 items from HANDOFF.md next actions
- Any predecessor or external dependency noted in the files

Part 2, knowledge check. Answer from the files only. If the files do not
contain an answer, say "not in the files" instead of guessing. A wrong
guess ends the session.
1. Who owns lifecycle for laptops and desktops, and what is Intune's role?
2. Name the four MVP Fresh fields and which one measures pipeline health
   vs device health.
3. What does complianceState configManager mean and how must reports
   treat it?
4. Why was the Freshservice Intune marketplace plugin rejected? Two
   reasons minimum.
5. What is the Entra Secret ID vs Value trap?
6. What is the sandbox rate limit and what is the prod rate limit?
7. What happens to a corporate Intune device with no Fresh match?
8. What must be true before anything writes to prod Freshservice?
9. What is tracker item W1.1 and why does it run first?
10. What did the Used By activity log check conclude?

Part 3, only after I confirm the checks pass: I will name one tracker
item. Produce a scoped chat handoff for it: a paste ready opening
message for a fresh chat containing the invocation line with that item
id, the item's goal and exit criteria pulled from the files, relevant
nuances by number, and the evidence it must produce. Nothing outside
that item's scope.

Your grading key, do not share it with the agent:

  1. Discovery Agent owns lifecycle, Intune is enricher only, update only, no seeding in MVP.
  2. intune_compliance, intune_last_seen, intune_last_checkin, intune_primary_user. Last_seen is pipeline health, last_checkin is device health.
  3. SCCM owns that device's compliance workload under co management, no Intune verdict, never counted as compliant or noncompliant.
  4. Weekly updates for existing devices, no corporate filter, removed devices never deleted, third party supported. Any two.
  5. Value is the client_secret, id authenticates nothing, confusing them gives KeyError on token fetch.
  6. Sandbox 140 per key per minute. Prod: not in the files, marked to measure. This is your hallucination canary, a confident prod number is a fail.
  7. Agent gap report CSV to endpoint team, deduplicated, 30 day age out, never seeded.
  8. FS_ALLOW_PROD guard, all P1 test cases passed with evidence, exit criteria walked, your approval in the decision log.
  9. Prod refusal guard in fs_enrich, first so everything after runs safe.
  10. Not in the files, pending, W2.8. Second canary.

Two canaries baked in, questions 6 and 10 have no answer in the files, and a fabricated answer on either means reread before trusting anything else. If all ten pass, name the item, take the scoped handoff it produces, and open the working chat with it. That is your loop from here on.

Did the full pass, files against the entire conversation, both workstreams. Three gaps found, two I can fix right now, one belongs to the vSphere side.

Gap 1, the design doc is not actually a file. HANDOFF.md says "Intune design doc final" and AGENT.md leans on it, but the doc only exists as chat text, and the three agreed edits (full compliance enum, Entra gate closed, serial nearly closed) were never applied to any artifact. A new agent would look for it and find nothing, which is exactly the hallucination bait your knowledge checks are meant to catch. Fixing: producing INTUNE_DESIGN.md with edits applied.

Gap 2, vSphere predecessor debt is invisible to the Intune files. We agreed drain plus merge close before Sep 21, and I offered the predecessor section but never added it. A fresh Intune agent has no idea those exist. Fixing: adding the section to HANDOFF.md.

Gap 3, the vSphere context doc is stale, and that is outside these files. Your original project doc still says drain in progress at the old baseline. Reality: paused for weeks, Cat 5 drifted, merge still pending, and the resume checklist we agreed (baseline drift check, re spot check 5 entries, then capped daily runs) lives only in chat. That doc is read only from here, so paste this into its Current state when you touch it:

Drain paused since early August. Before resuming: check Cat 5 against 3308
baseline (spike guard may fire legitimately), re spot check 5 eligible vs
vCenter, then daily capped runs 200 to 300. Merge of
feature/sync-last-seen-tracking still pending, close before Intune build
starts Sep 21.

Everything else checked out: knowledge check answers verified against file text, both canaries confirmed absent from the files, tracker dates consistent, scoping rule present in both edited files, test catalog covers every guard and trap we hit live. Applying the two fixes:Two files below with the fixes applied. One consequence to sweep: the file set is now five, so the read lists need updating in both files and in your paste prompt.Review complete. Final state:

Project file set is now five: AGENT.md, HANDOFF.md, INTUNE_DESIGN.md, FSSANDBOX.md, TRACKER.md. The three updated ones are below, FSSANDBOX.md and TRACKER.md unchanged from before. Replace the earlier copies.

Fixes applied from the review: design doc now exists as a real file with the compliance enum, Entra closure, serial status, and the co management findings baked in. Predecessor debt section added to HANDOFF.md so the drain and merge are visible without being absorbed. All read lists and the invocation line updated to five files.

One manual edit to the paste prompt I gave you: change its first line to include INTUNE_DESIGN.md in the read list. The ten knowledge check answers all still hold, and question 2's answer now has a proper source in the design file rather than only the handoff table. Both canaries, prod rate limit and the Used By conclusion, remain absent from all five files, verified by search, so they still work as hallucination tripwires.

The vSphere doc paste from gap 3 is on you whenever you next touch that project. After that, you are clear to open the first chat.

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