UDisks 2.10 Released With Native NVMe Support, LVM2 RAID

[phoronix]

Phoronix: UDisks 2.10 Released With Native NVMe Support, LVM2 RAID

UDisks 2.10 was released last week for this set abstraction layer providing a daemon and tooling around the manipulation of disks and storage devices under Linux...

https://www.phoronix.com/news/UDisks-2.10

[andreano]

Thanks, I'm not a fan. This important piece of infrastructure has a very irritating 10 minute polling interval that breaks harddisk spindown by default (unless you set a shorter spindown timeout or specifically configure it via udisks2, which obviously requires knowing about udisks2):

https://github.com/storaged-project/udisks/issues/407

[mlau]

Thanks, I'm not a fan. This important piece of infrastructure has a very irritating 10 minute polling interval that breaks harddisk spindown

Why does it need to poll a fixed harddisk every 10 minutes?

[andreano]

Why does it need to poll a fixed harddisk every 10 minutes?

Well, that's just bonus functionality – reimplementing smartd. In the interest of letting my harddisks spin down, I bumped the (hardcoded) polling interval to 24h and ran that on my harddisk rig for years, and that was fine.

Its one essential job, which is why you can't get rid of it, is to respond to D-bus queries (about which storage devices exist, which btw could be done by filtering device nodes in /dev/ without spinning up anything) when you start KDE itself or KDE programs like Dolphin. Without it, they will hang forever. I actually thought they had fixed that, but I tried now, and Dolphin hangs on startup if I stop and disable udisksd.

I'm pretty sure I could implement just this essential functionality myself, and get it right, without any of the bonus functionality that the article is talking about.

[pereiraalex]

Well, that's just bonus functionality – reimplementing smartd. In the interest of letting my harddisks spin down, I bumped the (hardcoded) polling interval to 24h and ran that on my harddisk rig for years, and that was fine.

Its one essential job, which is why you can't get rid of it, is to respond to D-bus queries (about which storage devices exist, which btw could be done by filtering device nodes in /dev/ without spinning up anything) when you start KDE itself or KDE programs like Dolphin. Without it, they will hang forever. I actually thought they had fixed that, but I tried now, and Dolphin hangs on startup if I stop and disable udisksd.

I'm pretty sure I could implement just this essential functionality myself, and get it right, without any of the bonus functionality that the article is talking about.

I don't see any hanging here on Nixos with udisks disabled. KDE plasma and dolphin just work normally (of course, without the funcionality of udisks)