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Bug - Deleting on NAS takes very long

Posted: Wed Jan 02, 2019 5:49 pm
by bchuter
Hi Mike

I've been meaning to raise this.
I've noticed that when i delete files on my NAS (Synology with BTRFS) it literally takes ages to delete files?

I just deleted 34 files on the NAS (ranging from sizes of 300Mb to 1Gb) and it took over 3mins to complete this task?
Deleting should be almost instant not?

Re: Bug - Deleting on NAS takes very long

Posted: Wed Jan 02, 2019 5:57 pm
by bchuter
Hmm, as a test i just tried the same thing with Double Commander and i also get slow delete speeds.
I can also hear the discs ticking over like mad during these delete operations. Like disk access noise.
could this be a MacOS thing or Linux or File system (BTFRS) issue, and possibly a Synology NAS issue......if memory serves me correctly
on windows when doing the same deletes they are near instant.

Re: Bug - Deleting on NAS takes very long

Posted: Wed Jan 02, 2019 11:44 pm
by moonrak
Hi,
If you are really hearing mechanical tick noises, that might be the harbinger of a disk failure.
Just my 2 cents.
Carlos

Re: Bug - Deleting on NAS takes very long

Posted: Thu Jan 03, 2019 8:19 am
by bchuter
moonrak wrote:
Wed Jan 02, 2019 11:44 pm
Hi,
If you are really hearing mechanical tick noises, that might be the harbinger of a disk failure.
Just my 2 cents.
Carlos
Hi there
no, it was probably a bad choice of words. I just meant it was reading the disk like mad.
Both disks are healthy (per SMART in Synology)

Re: Bug - Deleting on NAS takes very long

Posted: Sun Jan 06, 2019 10:33 am
by mike
Hey Bradley,

It really depends on a filesystem, and also on a particular file layout there.
Some filesystems are just notorious for slow deletion time, especially indirects-based one like Ext3.

NC itself doesn't do anything special if we're talking about a real "mounted" filesystem - its behaviour shouldn't be different from Unix "rm" in this regard.
You can check if there's a difference if you delete files via rm in terminal.

Speaking of Windows - maybe it was moving these files into some kind of Recycle Bin?
This operation, of course, would be almost instant.