Date: Thu, 07 Mar 2024 15:09:19 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: Christos Chatzaras <chris@cretaforce.gr> Cc: Current <current@freebsd.org> Subject: Re: Reason why "nocache" option is not displayed in "mount"? Message-ID: <0fc7f06e0d58f95c43198630e0895232@Leidinger.net> In-Reply-To: <22017329-8EA9-4477-B5DB-412ABA34788D@cretaforce.gr> References: <09bb45dea82d96c11f34cc48dda540dc@Leidinger.net> <22017329-8EA9-4477-B5DB-412ABA34788D@cretaforce.gr>
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[-- Attachment #1 --] Am 2024-03-07 14:59, schrieb Christos Chatzaras: >> what is the reason why "nocache" is not displayed in the output of >> "mount" for nullfs options? >> >> # grep packages /etc/fstab.commit_leidinger_net >> /shared/ports/packages >> /space/jails/commit.leidinger.net/shared/ports/packages nullfs >> rw,noatime,nocache 0 0 >> >> # mount | grep commit | grep packages >> /shared/ports/packages on >> /space/jails/commit.leidinger.net/shared/ports/packages (nullfs, >> local, noatime, noexec, nosuid, nfsv4acls) >> >> Context: I wanted to check if poudriere is mounting with or without >> "nocache", and instead of reading the source I wanted to do it more >> quickly by looking at the mount options. > > In my setup, I mount the /home directory using nullfs with the nocache > option to facilitate access for certain jails. The primary reason for > employing nocache is due to the implementation of ZFS quotas on the > main system, which do not accurately reflect changes in file usage by > users within the jail unless nocache is used. When files are added or > removed by a user within jail, their disk usage wasn't properly updated > on the main system until I started using nocache. Based on this > experience, I'm confident that applying nocache works as expected in > your scenario as well. It does. The question is how to I _see_ that a mount point is _setup_ with nocache? In the above example the FS _is_ mounted with nocache, but it is _not displayed_ in the output. Bye, Alexander. -- http://www.Leidinger.net Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEER9UlYXp1PSd08nWXEg2wmwP42IYFAmXpyp4ACgkQEg2wmwP4 2IYz4A//Ub8GLbwayEJ0E1G928O3DVv0oGso7Y9mtbMOW59LD/6bCCWg4+GrrfUg QcAPP/W46Nf7hVgBgDCxm7HdjWyHp5ZiOEFW0CjqyXgBKBEokfbkZE/2SATDBaZI zffn7O5fDAaLqrRkDdPRpzQZQ6t0ks5lHIuatUA+oVXmWxYx4Sp72EAgzTwdGAFq XAywc2IGK9TnvBqOKkSvI2IoOhiFdl/WBiiIfQtP/TfVjazRJQme3TFBC/JnODus AuIItjz8h+oVvXdqG0JcgQOPatAhYBW8j7cw1V41kjr2sNfEBZc7ZVIFGsGxt6Ct 3WFvvwQ/OH3OD6vo9GghRUnkDZG46Tf7lHaZ4msqDK7StGxAY8igOwBv2A0BaGE2 GZBjNayxk9dHjSnHQ/4BLMkyqmOGeEn0Vqd8PGR+zGSYGv9tkFQGX7aL99DqtCMi 1qt9rOpfMJhjUJYglCpth267wpTL5GlU+KplkqEGZAO02lSHVXcOTjz6o4Uu9ZLd nyQi/dwsOxJ+jYeMHycjY13uVtJrMstxzg+3uVZDXIIogLLkCOmLBaRZzbOxETgb Sfga23Eoi/6cYQuGHHSGWPuoxAL2htWYy/4pezDOieNmvZYjxxGIPAh44j8iyqzq NNew5pBxqhH2s+RAFK4j1+u0dJ/U2sz/tmsgHNJZKg4UFwSs4lI= =Hqe9 -----END PGP SIGNATURE-----help
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