Kopia doesn't automatically run overdue snapshots when waking from sleep

[elydpg]

I noticed that #3319 is supposed to fix overdue snapshots not automatically running. And it does. However, overdue snapshots do not run when the computer was put to sleep (with Kopia running of course) before the designated snapshot time and woken from sleep after the snapshot was supposed to have been run. Instead, Kopia needs to be restarted in order for the missed snapshot to be automatically run.

For further info, I am running Kopia 0.15.0 on Kubuntu 23.10.

[elydpg]

Kopia upon waking from system sleep, before restarting Kopia

After restarting Kopia

[lupusA]

Hi,

can you post your policy?

Cheers

[elydpg]

No problem! My policy is specified by this JSON representation:

{
    "retention": {},
    "files": {
        "ignore": [
            "[censored]"
        ]
    },
    "errorHandling": {},
    "scheduling": {
        "timeOfDay": [
            {
                "hour": 4,
                "min": 0
            }
        ]
    },
    "compression": {},
    "actions": {},
    "logging": {
        "directories": {},
        "entries": {}
    },
    "upload": {}
}

The global policy that it inherits from is defined by this:

{
    "retention": {
        "keepLatest": 10,
        "keepHourly": 48,
        "keepDaily": 7,
        "keepWeekly": 4,
        "keepMonthly": 24,
        "keepAnnual": 3,
        "ignoreIdenticalSnapshots": false
    },
    "files": {
        "ignoreDotFiles": [
            ".kopiaignore"
        ]
    },
    "errorHandling": {
        "ignoreFileErrors": false,
        "ignoreDirectoryErrors": false,
        "ignoreUnknownTypes": true
    },
    "scheduling": {
        "runMissed": true
    },
    "compression": {
        "compressorName": "none"
    },
    "actions": {},
    "logging": {
        "directories": {
            "snapshotted": 5,
            "ignored": 5
        },
        "entries": {
            "snapshotted": 0,
            "ignored": 5,
            "cacheHit": 0,
            "cacheMiss": 0
        }
    },
    "upload": {
        "maxParallelSnapshots": 1,
        "parallelUploadAboveSize": 2147483648
    }
}

[tessus]

The same happens on macOS. My workaround is to click the refresh button:

[elydpg]

Still happens on 0.16.0

[blm768]

I've confirmed similar behavior on Windows in 0.17.0. I only see the behavior on a repository that's stored on an SMB share; my other machine that backs up to an S3-compatible object store doesn't exhibit the issue. Kopia does seem to try to run the snapshots, but they fail (perhaps because the SMB share isn't ready yet). This also seems to block later hourly snapshots from running until I refresh the UI.

[DarkArc]

I'm seeing this as well on my laptop running Fedora 40.

Possibly relevant is that darkman (also written in Go) seems to handle this correctly via https://gitlab.com/WhyNotHugo/darkman/-/blob/main/boottimer/boottimer.go?ref_type=heads