[PVE-User] Unprivileged container and fstrim...

Marco Gaiarin gaio at sv.lnf.it
Mon Mar 9 11:34:32 CET 2020


I was abused to do a 'fstrim /' weekly run on my privileged containers,
and seems that the command was effective:

	root at vdcsv1:~# fstrim -v /
	/: 18,6 GiB (19946131456 bytes) trimmed

but after convert many of them to unprivileged ones:

	root at vmw:~# fstrim -v /
	fstrim: /: FITRIM ioctl failed: Operazione non permessa

Clearly, underlying storage is 'trimmable'.


Two question.

1) trim on container generally works, or simply on privileged ones does
 not throw errors but do nothing? ;-)
Container space change slowly, so could be that trim was simply
ignored...

2) there's another way to 'trim' container disk space? Eg, from the
host?


Thanks.

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