This is great timing considering I'm currently dealing with FFS corruption after my OpenBSD server lost power during a storm.

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rbc 3 hours ago | parent | next [-]

I've run OpenBSD continuously at home without backup power for something like eight years. They probably loose power about once or twice a quarter. I have yet to detect lost data that was important. Measures are taken. If a storm is coming through, I'll shutdown till it passes.

I've been lucky with release driver support. The little Lenovo ThinkCentre's being used seem to chug along without crashing on driver issues, at least with OpenBSD releases.

The standard OpenBSD partitioning scheme is also being used. Boot time fsck has never failed when the storage was properly attached and in a good state. Backups are performed using pax. So far, so good.

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daneel_w 8 hours ago | parent | prev [-]

Are you sure it's not just a dodgy SSD that simply failed to persist data when losing power mid-write? I've had my share of sudden power cuts upon OpenBSD during the past 20+ years, and FFS has so far never gone corrupt on me.

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doublepg23 7 hours ago | parent | next [-]

I do not believe so?

Drive is a 2TB Intel 670p NVMe SSD (INTEL SSDPEKNU020TZ) with 9078 power on hours and 42TBW - so pretty spry, but not at the start of the bathtub curve either.

It was mounted as fast storage for a Bitcoin node.

Perhaps the only 'unique' thing is it is using a NVMe to PCIe adapter card (Synology M2D20) due to this being my "legacy" server that's still rocking a Broadwell chip.

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fodkodrasz 5 hours ago | parent | prev | next [-]

FFS corrupted multiple times on me, with intel video driver freezing on OpenBSD. My short OpenBSD sidetrack ended after reliably corrupting itself the third time... every time video driver panicking, leaving a corrupted filesystem after reboot, when I had eg. ports install going on during panic.

Windows ran fine on the machine (Lenovo 200) before, and Linux ran fine after. FFS (and the intel video drivers) are the weakest part of OpenBSD in my experience, I liked many other aspects.

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yellowapple 5 hours ago | parent | prev [-]

I've seen file corruption with FFS on some of my OpenBSD servers, though them being VMs is likely a factor there.

	▲	oridb 2 hours ago \| parent [-]
		Qcow2 will zero blocks on power loss, at least in some configurations.