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ser8 whole-system disk review: 54.7% used, ~70 GB reclaimable, ClickHouse is the growth vector #916

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opened 2026-08-25 01:21:22 +00:00 by coilyco-ops · 3 comments

coilyco-ops commented

2026-08-25 01:21:22 +00:00

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First full disk review of ser8 since bring-up. Diagnosis only. No relief applied. Following ops-investigation-disk-pressure, which requires stopping at classification unless an attended operator approves a relief path.

Headline: no pressure, but worth knowing

root      980.67 GB total
used      495.4 GB   (536.4 GB counting reserved blocks)
available 444.3 GB
used_pct  54.7%       warn 80%, critical 85%
inodes    4.3% used   58.2M of 60.85M free

297 GB until the critical threshold. Inode exhaustion is ruled out entirely, so this is byte pressure only, and there is no incident. This is a capacity baseline.

Node otherwise idle: 61.85 GB RAM at 15%, load 0.47/1.07/1.16, uptime 82 days.

Tooling correction, important for anyone reading past numbers

The node-stats MCP surface materially undercounts ser8 volumes, because its scans hit timeouts and entry caps at this scale:

ClickHouse PVC via get_k3s_volume_usage : 10.89 GB   (truncated: timeout)
ClickHouse PVC via du                   : 66.2  GB

A 6x undercount. get_pressure_path_usage similarly reported /var/lib/rancher/k3s/storage as 13.99 GB against an actual 71.1 GB. Both results carried truncated: true and timed_out: true, so the tool was honest, but a reader skimming the totals would be badly misled.

Also worth noting: ser8's node-stats deployment lacks get_host_usage_breakdown, which kai-server has and which the disk-pressure skill explicitly recommends reaching for before any hand-run du. On ser8 that tool does not exist, so a hand-run walk was the only route to the answer.

Per raw-du-guardrails.md: the du figures below were taken with -x and with *kubernetes.io~local-volume* and *volume-subpaths* excluded so kubelet bind mounts are not double counted. They remain uncorrected totals in the sense that reference warns about.

Measured ownership

   208.5 GB   /var/lib/rest-server        restic REST repo (kai-server backups)
    66.2 GB   ClickHouse PVC              SigNoz telemetry store
    56.4 GB   /var/lib/kubelet/pods       pod ephemeral, Forgejo runners
    52.1 GB   /var/backups/signoz-upgrades  STALE
    28.4 GB   k3s containerd              images
    18.0 GB   /var/lib/containerd + docker  IDLE, non-k3s
     6.8 GB   /home
     5.7 GB   /usr
     4.6 GB   /var/log  (3.6 GB journal)

1. restic backup repo, 208.5 GB, healthy

Single repo /var/lib/rest-server/repos/kai-server. Backups are current and running daily, contrary to what an alphabetical listing first suggested:

2026-08-20 11:53
2026-08-21 12:11
2026-08-22 12:09
2026-08-23 12:11
2026-08-24 11:47   <- today

15 snapshots retained. So ser8 is already serving as a live backup target, which is worth recording because the k3s snapshot-ship automation (#261) is still open. This is a different, working backup path.

Open question, not answered here: whether a restic forget --prune policy is configured. 15 snapshots at 208.5 GB deduped is reasonable, but an unbounded repo is the single largest growth risk on the disk after ClickHouse. Worth confirming rather than assuming.

2. SigNoz ClickHouse, 66.2 GB, and now accelerating

The PVC requests 100 GB and uses 66.2 GB, so it is at 62% of its own claim while the node is at 54.7%. Note the request is a scheduling request, not a quota and not a limit.

This is the growth vector. Traefik access logs were enabled at 00:54 UTC today (coilyco-bridge/deploy#786, coilyco-bridge/deploy#786), which sends every public request into this store. The retention decision left open on that issue is not cosmetic: it directly governs whether this 66.2 GB stays flat or climbs toward the 100 GB request and beyond.

3. Pod ephemeral, 56.4 GB, live

Attributed to Forgejo runner pods at roughly 6.3 GB each:

6.3 GB  09316ce8...  forgejo-runner-ser8-flight-deck-1
6.3 GB  d13a38c8...  forgejo-runner-ser8-gaming-2
6.3 GB  fb860da2...  forgejo-runner-ser8-gaming-1
6.3 GB  76088fa2...  forgejo-runner-ser8-bridge-0
6.3 GB  3815fc5a...  forgejo-runner-ser8-flight-deck-4

This is live working data (DinD image cache and scratch), not a cleanup target. It is the domain the skill flags as having hidden the 2026-08-17 incident, and it is invisible to PVC accounting. Recorded so it is not mistaken for waste, and so the per-runner footprint is known: each additional ser8 runner costs about 6.3 GB.

4. Stale SigNoz upgrade backups, 52.1 GB, the clearest waste

17.4 GB  20260804T182122Z
17.3 GB  20260804T183841Z
 0.0 GB  20260804T190224Z
17.4 GB  20260804T190428Z   <- LATEST

Four directories, all created within one hour on 2026-08-04, three weeks ago. LATEST names 20260804T190428Z, so the other two large copies are superseded pre-upgrade snapshots from the same session. SigNoz has run since without needing them.

5. Idle non-k3s container runtime, 18.0 GB

docker and containerd are both active under systemd, but neither tree has been written since 2026-07-12, six weeks ago. k3s uses its own containerd at /var/lib/rancher/k3s/agent/containerd (28.4 GB, separately accounted), and the runner DinD containers run inside k3s pods. So this looks like an install left over from bring-up, holding images nothing uses.

Proposed relief, attended, in priority order

None of this is applied. Each needs an operator and a rollback position.

Drop the two superseded signoz-upgrade backups, keeping LATEST. Reclaims ~34.7 GB. Lowest risk item here: they are three weeks old and explicitly superseded. Dropping all four reclaims 52.1 GB, which is defensible given SigNoz has run three weeks without them, but keeping LATEST is the conservative call.
Confirm the non-k3s docker/containerd is genuinely unused, then reclaim ~18 GB. Needs a decision on whether the daemons should also be disabled, since running them costs memory and attack surface for no observed use. Verify nothing ad-hoc depends on them before acting.
Confirm the restic forget/prune policy. Not a reclaim action, a correctness check on the largest consumer.
Set SigNoz retention deliberately (tracked on coilyco-bridge/deploy#786). This is the only item that changes the trajectory rather than the current number.

Items 1 and 2 together take the node from 54.7% to roughly 47%.

Follow-ups worth their own tracking

ser8's node-stats deployment should gain get_host_usage_breakdown, or its scan budgets should be raised, so this review is repeatable without SSH and a hand-run du.
ops-investigation-disk-pressure is written around kai-server, including a kai-disk-pressure-report helper that has no ser8 equivalent. The methodology transferred cleanly; the tooling did not.

First full disk review of ser8 since bring-up. **Diagnosis only. No relief applied.** Following `ops-investigation-disk-pressure`, which requires stopping at classification unless an attended operator approves a relief path. ## Headline: no pressure, but worth knowing ``` root 980.67 GB total used 495.4 GB (536.4 GB counting reserved blocks) available 444.3 GB used_pct 54.7% warn 80%, critical 85% inodes 4.3% used 58.2M of 60.85M free ``` 297 GB until the critical threshold. Inode exhaustion is ruled out entirely, so this is byte pressure only, and there is no incident. This is a capacity baseline. Node otherwise idle: 61.85 GB RAM at 15%, load 0.47/1.07/1.16, uptime 82 days. ## Tooling correction, important for anyone reading past numbers **The node-stats MCP surface materially undercounts ser8 volumes**, because its scans hit timeouts and entry caps at this scale: ``` ClickHouse PVC via get_k3s_volume_usage : 10.89 GB (truncated: timeout) ClickHouse PVC via du : 66.2 GB ``` A **6x undercount**. `get_pressure_path_usage` similarly reported `/var/lib/rancher/k3s/storage` as 13.99 GB against an actual 71.1 GB. Both results carried `truncated: true` and `timed_out: true`, so the tool was honest, but a reader skimming the totals would be badly misled. Also worth noting: ser8's node-stats deployment **lacks `get_host_usage_breakdown`**, which kai-server has and which the disk-pressure skill explicitly recommends reaching for before any hand-run `du`. On ser8 that tool does not exist, so a hand-run walk was the only route to the answer. Per `raw-du-guardrails.md`: the `du` figures below were taken with `-x` and with `*kubernetes.io~local-volume*` and `*volume-subpaths*` excluded so kubelet bind mounts are not double counted. They remain uncorrected totals in the sense that reference warns about. ## Measured ownership ``` 208.5 GB /var/lib/rest-server restic REST repo (kai-server backups) 66.2 GB ClickHouse PVC SigNoz telemetry store 56.4 GB /var/lib/kubelet/pods pod ephemeral, Forgejo runners 52.1 GB /var/backups/signoz-upgrades STALE 28.4 GB k3s containerd images 18.0 GB /var/lib/containerd + docker IDLE, non-k3s 6.8 GB /home 5.7 GB /usr 4.6 GB /var/log (3.6 GB journal) ``` ### 1. restic backup repo, 208.5 GB, healthy Single repo `/var/lib/rest-server/repos/kai-server`. **Backups are current and running daily**, contrary to what an alphabetical listing first suggested: ``` 2026-08-20 11:53 2026-08-21 12:11 2026-08-22 12:09 2026-08-23 12:11 2026-08-24 11:47 <- today ``` 15 snapshots retained. So ser8 is already serving as a live backup target, which is worth recording because the k3s snapshot-ship automation (#261) is still open. This is a different, working backup path. **Open question, not answered here:** whether a `restic forget --prune` policy is configured. 15 snapshots at 208.5 GB deduped is reasonable, but an unbounded repo is the single largest growth risk on the disk after ClickHouse. Worth confirming rather than assuming. ### 2. SigNoz ClickHouse, 66.2 GB, and now accelerating The PVC requests 100 GB and uses 66.2 GB, so it is at **62% of its own claim** while the node is at 54.7%. Note the request is a scheduling request, not a quota and not a limit. This is the growth vector. Traefik access logs were enabled at 00:54 UTC today (`coilyco-bridge/deploy#786`, https://forgejo.coilysiren.me/coilyco-bridge/deploy/issues/786), which sends **every public request** into this store. The retention decision left open on that issue is not cosmetic: it directly governs whether this 66.2 GB stays flat or climbs toward the 100 GB request and beyond. ### 3. Pod ephemeral, 56.4 GB, live Attributed to Forgejo runner pods at roughly 6.3 GB each: ``` 6.3 GB 09316ce8... forgejo-runner-ser8-flight-deck-1 6.3 GB d13a38c8... forgejo-runner-ser8-gaming-2 6.3 GB fb860da2... forgejo-runner-ser8-gaming-1 6.3 GB 76088fa2... forgejo-runner-ser8-bridge-0 6.3 GB 3815fc5a... forgejo-runner-ser8-flight-deck-4 ``` This is live working data (DinD image cache and scratch), **not** a cleanup target. It is the domain the skill flags as having hidden the 2026-08-17 incident, and it is invisible to PVC accounting. Recorded so it is not mistaken for waste, and so the per-runner footprint is known: each additional ser8 runner costs about 6.3 GB. ### 4. Stale SigNoz upgrade backups, 52.1 GB, the clearest waste ``` 17.4 GB 20260804T182122Z 17.3 GB 20260804T183841Z 0.0 GB 20260804T190224Z 17.4 GB 20260804T190428Z <- LATEST ``` Four directories, all created within one hour on **2026-08-04**, three weeks ago. `LATEST` names `20260804T190428Z`, so the other two large copies are superseded pre-upgrade snapshots from the same session. SigNoz has run since without needing them. ### 5. Idle non-k3s container runtime, 18.0 GB `docker` and `containerd` are both `active` under systemd, but **neither tree has been written since 2026-07-12**, six weeks ago. k3s uses its own containerd at `/var/lib/rancher/k3s/agent/containerd` (28.4 GB, separately accounted), and the runner DinD containers run inside k3s pods. So this looks like an install left over from bring-up, holding images nothing uses. ## Proposed relief, attended, in priority order None of this is applied. Each needs an operator and a rollback position. 1. **Drop the two superseded signoz-upgrade backups**, keeping `LATEST`. Reclaims **~34.7 GB**. Lowest risk item here: they are three weeks old and explicitly superseded. Dropping all four reclaims 52.1 GB, which is defensible given SigNoz has run three weeks without them, but keeping `LATEST` is the conservative call. 2. **Confirm the non-k3s docker/containerd is genuinely unused, then reclaim ~18 GB.** Needs a decision on whether the daemons should also be disabled, since running them costs memory and attack surface for no observed use. Verify nothing ad-hoc depends on them before acting. 3. **Confirm the restic forget/prune policy.** Not a reclaim action, a correctness check on the largest consumer. 4. **Set SigNoz retention deliberately** (tracked on https://forgejo.coilysiren.me/coilyco-bridge/deploy/issues/786). This is the only item that changes the trajectory rather than the current number. Items 1 and 2 together take the node from 54.7% to roughly 47%. ## Follow-ups worth their own tracking * ser8's node-stats deployment should gain `get_host_usage_breakdown`, or its scan budgets should be raised, so this review is repeatable without SSH and a hand-run `du`. * `ops-investigation-disk-pressure` is written around kai-server, including a `kai-disk-pressure-report` helper that has no ser8 equivalent. The methodology transferred cleanly; the tooling did not.

coilyco-ops commented

2026-08-25 01:36:16 +00:00

Author

Owner

Attended relief applied: 52.2 GB reclaimed, 54.7% -> 49.7%

Kai authorized items 1 and 2 and was attended throughout. Item 3 (restic) was raised and deliberately deferred, see below.

Admission gate, recorded before mutation

Per relief-and-verification.md, neither action maps cleanly onto the six enumerated relief paths, so the gate was established explicitly:

Owner and paths - /var/backups/signoz-upgrades 52.1 GB, /var/lib/containerd + /var/lib/docker 18.0 GB.
Expected relief - ~34.7 GB and ~17 GB.
Service health - SigNoz on ser8 fully healthy before touching anything: chi-signoz-clickhouse-cluster-0-0-0, signoz-0, signoz-otel-collector, signoz-zookeeper-0 all Running at 20d. Not mid-incident.
Rollback - the LATEST backup retained intact, plus re-pullable registry images.

Action 1: superseded SigNoz upgrade backups

Completion markers were verified before removal rather than assumed:

20260804T182122Z  complete=yes    removed  (superseded)
20260804T183841Z  complete=yes    removed  (superseded)
20260804T190224Z  complete=NO     removed  (aborted, no completion marker)
20260804T190428Z  complete=yes    KEPT     (LATEST)

That confirmed the read of the directory listing: the near-zero-byte one was a genuinely aborted run, not a small valid backup.

Each contains SHA256SUMS, backup-complete, backup-id, clickhouse-native.zip, clickhouse-pvc.tar.zst, so these are real ClickHouse exports plus PVC tarballs, not incidental files.

BEFORE  used=468.2 GB  avail=407.0 GB  54%
AFTER   used=433.4 GB  avail=441.7 GB  50%

34.8 GB reclaimed. LATEST remains at 17.4 GB as the rollback position.

Action 2: idle non-k3s container images

Verified unused before acting, per relief path 4 ("remove only images proven unused by running workloads"):

containers: 0
forgejo.coilysiren.me/coilyco-flight-deck/agentic-os:release   6.97 GB
postgres:17                                                     645 MB
hello-world:latest                                             25.9 kB

Used docker image prune -a, docker's own GC path, rather than the ctr prune the skill forbids. Docker reported Total reclaimed space: 18.7GB.

Note this also explains the earlier /var/lib/docker measurement of only 0.6 GB against 7.6 GB of listed images: this docker stores images through containerd, so the bytes were in /var/lib/containerd, which is now 0.0 GB.

AFTER   used=416.0 GB  avail=459.1 GB  48%

17.4 GB reclaimed.

Rollback caveat worth stating: agentic-os:release is a mutable tag. Re-pulling later yields whatever release points at then, not this exact build. postgres:17 and hello-world are trivially re-pullable. Nothing was running on any of them.

Left deliberately undone: the docker and containerd daemons are still active. Disabling them is a system configuration change rather than cleanup, and was not in scope for this authorization. Worth deciding separately, since running them costs memory and attack surface for no observed use since 2026-07-12.

After-state checkpoint

Two independent sources agree:

df                     used=416.0 GB  avail=459.1 GB  48%   inodes 5%
node-stats (MCP)       pressure_used=487.7 GB  49.73%        inodes 4.16%

The 48% vs 49.7% difference is the 41 GB of reserved blocks the MCP includes, consistent with the pre-relief readings.

345.8 GB until the 85% critical threshold, up from 297.2 GB. All SigNoz pods still Running, nothing disturbed.

Item 3, restic: deferred with a finding

Investigated far enough to answer whether it was worth pursuing for space. It is not, but the check surfaced something else. Filed separately rather than folded in here, because it is a backup-correctness question rather than a disk question.

## Attended relief applied: 52.2 GB reclaimed, 54.7% -> 49.7% Kai authorized items 1 and 2 and was attended throughout. Item 3 (restic) was raised and deliberately deferred, see below. ### Admission gate, recorded before mutation Per `relief-and-verification.md`, neither action maps cleanly onto the six enumerated relief paths, so the gate was established explicitly: * **Owner and paths** - `/var/backups/signoz-upgrades` 52.1 GB, `/var/lib/containerd` + `/var/lib/docker` 18.0 GB. * **Expected relief** - ~34.7 GB and ~17 GB. * **Service health** - SigNoz on ser8 fully healthy before touching anything: `chi-signoz-clickhouse-cluster-0-0-0`, `signoz-0`, `signoz-otel-collector`, `signoz-zookeeper-0` all Running at 20d. Not mid-incident. * **Rollback** - the `LATEST` backup retained intact, plus re-pullable registry images. ### Action 1: superseded SigNoz upgrade backups Completion markers were verified **before** removal rather than assumed: ``` 20260804T182122Z complete=yes removed (superseded) 20260804T183841Z complete=yes removed (superseded) 20260804T190224Z complete=NO removed (aborted, no completion marker) 20260804T190428Z complete=yes KEPT (LATEST) ``` That confirmed the read of the directory listing: the near-zero-byte one was a genuinely aborted run, not a small valid backup. Each contains `SHA256SUMS`, `backup-complete`, `backup-id`, `clickhouse-native.zip`, `clickhouse-pvc.tar.zst`, so these are real ClickHouse exports plus PVC tarballs, not incidental files. ``` BEFORE used=468.2 GB avail=407.0 GB 54% AFTER used=433.4 GB avail=441.7 GB 50% ``` **34.8 GB reclaimed.** `LATEST` remains at 17.4 GB as the rollback position. ### Action 2: idle non-k3s container images Verified unused before acting, per relief path 4 ("remove only images proven unused by running workloads"): ``` containers: 0 forgejo.coilysiren.me/coilyco-flight-deck/agentic-os:release 6.97 GB postgres:17 645 MB hello-world:latest 25.9 kB ``` Used `docker image prune -a`, docker's own GC path, rather than the `ctr prune` the skill forbids. Docker reported `Total reclaimed space: 18.7GB`. Note this also explains the earlier `/var/lib/docker` measurement of only 0.6 GB against 7.6 GB of listed images: this docker stores images through containerd, so the bytes were in `/var/lib/containerd`, which is now 0.0 GB. ``` AFTER used=416.0 GB avail=459.1 GB 48% ``` **17.4 GB reclaimed.** **Rollback caveat worth stating:** `agentic-os:release` is a *mutable* tag. Re-pulling later yields whatever `release` points at then, not this exact build. `postgres:17` and `hello-world` are trivially re-pullable. Nothing was running on any of them. **Left deliberately undone:** the `docker` and `containerd` daemons are still `active`. Disabling them is a system configuration change rather than cleanup, and was not in scope for this authorization. Worth deciding separately, since running them costs memory and attack surface for no observed use since 2026-07-12. ### After-state checkpoint Two independent sources agree: ``` df used=416.0 GB avail=459.1 GB 48% inodes 5% node-stats (MCP) pressure_used=487.7 GB 49.73% inodes 4.16% ``` The 48% vs 49.7% difference is the 41 GB of reserved blocks the MCP includes, consistent with the pre-relief readings. 345.8 GB until the 85% critical threshold, up from 297.2 GB. All SigNoz pods still Running, nothing disturbed. ### Item 3, restic: deferred with a finding Investigated far enough to answer whether it was worth pursuing for space. **It is not**, but the check surfaced something else. Filed separately rather than folded in here, because it is a backup-correctness question rather than a disk question.

coilyco-ops referenced this issue

2026-08-25 01:36:40 +00:00

restic: finish the failure-alert rollout on kai-server, and test the restore path #917

coilyco-ops commented

2026-08-25 05:46:40 +00:00

Author

Owner

Live check: ser8 root is at 44.9%, not the 54.7% in the title.

/dev/mapper/ubuntu--vg-ubuntu--lv   980 GB total   421 GB used   518 GB free   44.9%

Roughly 10 points below where this was filed, with over 500 GB free. The reclaim case this issue was built on is weaker than when it was written, and there is no pressure to act against.

Recording it rather than closing, because the ClickHouse growth-vector observation is about a trajectory rather than a threshold, and that does not become wrong just because the current number improved. Whether ~70 GB of reclaimable space is worth collecting is a judgement call at 44.9% that it was not at 54.7%.

Related and worth reading together: the restic repo on this host was separately confirmed to be under an enforced retention policy, contrary to what #917 originally concluded. restic-prune.timer runs weekly and its last run removed 6 snapshots and reclaimed 2.022 GiB, holding unused size at 0.89% of the repo. So the 208.5 GB repo here is managed rather than growing unbounded, which removes one candidate from the growth picture.

Live check: ser8 root is at **44.9%**, not the 54.7% in the title. ``` /dev/mapper/ubuntu--vg-ubuntu--lv 980 GB total 421 GB used 518 GB free 44.9% ``` Roughly 10 points below where this was filed, with over 500 GB free. The reclaim case this issue was built on is weaker than when it was written, and there is no pressure to act against. Recording it rather than closing, because the ClickHouse growth-vector observation is about a trajectory rather than a threshold, and that does not become wrong just because the current number improved. Whether ~70 GB of reclaimable space is worth collecting is a judgement call at 44.9% that it was not at 54.7%. Related and worth reading together: the restic repo on this host was separately confirmed to be under an enforced retention policy, contrary to what #917 originally concluded. `restic-prune.timer` runs weekly and its last run removed 6 snapshots and reclaimed 2.022 GiB, holding unused size at 0.89% of the repo. So the 208.5 GB repo here is managed rather than growing unbounded, which removes one candidate from the growth picture.

coilyco-ops referenced this issue

2026-08-25 06:10:26 +00:00

forgejo-data is 97.7 GB against a 21.5 GB request, and #870 counts the orphaned runner PVCs as legitimate data #846

coilyco-ops added the

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2026-08-25 08:02:04 +00:00

coilyco-ops added the

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2026-08-25 09:30:53 +00:00

coilyco-ops commented

2026-08-28 21:15:37 +00:00

Author

Owner

Current reading, and this is now the standing ser8 capacity issue

Measured 2026-08-28:

total   980.7 GB
used    444.8 GB
free    494.9 GB
percent  47.3

47.3 percent, against the 54.7 percent this issue was filed on. Down 7.4 points, with 494.9 GB free.

#871 closed into this one

#871 asked "ser8 root filesystem climbing ~10 percent to ~54 percent over 30 days, attribute the growth." That question is partly answered by the reading itself: the trend reversed. The filesystem is lower than when the climb was reported, so whatever drove it either stopped or was reclaimed. Closed and pointed here, since a growth-attribution issue whose growth went away is not actionable as written.

What that does not tell us is why, and that matters because an unexplained reversal is as weak a signal as an unexplained climb. Neither direction has an attribution.

What stays live here

The reclaimable analysis in the body is not invalidated by a lower reading. ClickHouse as the growth vector is still the thing to watch, and it was not re-measured today. With 494.9 GB free there is no urgency, which is exactly when the retention question is cheapest to answer.

Related and still open: #808, ser8 gaming runner evicted for exceeding its 24Gi docker-lib EmptyDir. That is a per-workload bound rather than a whole-node one, and it can bite well before the filesystem does.

## Current reading, and this is now the standing ser8 capacity issue Measured 2026-08-28: ``` total 980.7 GB used 444.8 GB free 494.9 GB percent 47.3 ``` **47.3 percent**, against the 54.7 percent this issue was filed on. Down 7.4 points, with 494.9 GB free. ### #871 closed into this one #871 asked "ser8 root filesystem climbing ~10 percent to ~54 percent over 30 days, attribute the growth." That question is partly answered by the reading itself: **the trend reversed**. The filesystem is lower than when the climb was reported, so whatever drove it either stopped or was reclaimed. Closed and pointed here, since a growth-attribution issue whose growth went away is not actionable as written. What that does not tell us is *why*, and that matters because an unexplained reversal is as weak a signal as an unexplained climb. Neither direction has an attribution. ### What stays live here The reclaimable analysis in the body is not invalidated by a lower reading. ClickHouse as the growth vector is still the thing to watch, and it was not re-measured today. With 494.9 GB free there is no urgency, which is exactly when the retention question is cheapest to answer. Related and still open: #808, ser8 gaming runner evicted for exceeding its 24Gi docker-lib EmptyDir. That is a per-workload bound rather than a whole-node one, and it can bite well before the filesystem does.

coilyco-ops referenced this issue

2026-08-28 21:15:48 +00:00

ser8: root filesystem climbing ~10% -> ~54% over 30 days - attribute the growth #871

coilyco-ops referenced this issue

2026-08-28 21:32:38 +00:00

Backlog burn-down 2026-08-28: what was closed and why #981

coilyco-ops added this to the Storage and capacity milestone

2026-08-29 06:09:04 +00:00