Date: Sun, 18 Jun 2017 13:19:38 -0700 From: David Christensen <dpchrist@holgerdanske.com> To: freebsd-questions@freebsd.org Subject: Re: zpool import -N mounts filesystems anyway Message-ID: <c2fff621-9ec7-e790-8b58-67170f97e42e@holgerdanske.com> In-Reply-To: <d4b055f2-2273-6df8-fe55-640f3b56e04d@bluerosetech.com> References: <7f41df25-df2e-298e-d33e-cc95874e831c@bluerosetech.com> <eb778163-8387-fd55-8e8f-d65ec221e6e8@holgerdanske.com> <d4b055f2-2273-6df8-fe55-640f3b56e04d@bluerosetech.com>
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On 06/18/17 01:24, Mel Pilgrim wrote: > 11.0-RELEASE-p7 > The pools and filesystems are all at current feature sets and versions. Your BSD appears to be out of date: 2017-06-18 12:47:54 dpchrist@freebsd ~ $ freebsd-version 11.0-RELEASE-p10 2017-06-18 13:06:16 dpchrist@freebsd ~ $ uname -a FreeBSD freebsd 11.0-RELEASE-p9 FreeBSD 11.0-RELEASE-p9 #0: Tue Apr 11 08:42:58 UTC 2017 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386 > # zpool list backupA > cannot open 'backupA': no such pool > # zpool import -N backupA > # zpool list backupA > NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH > ALTROOT > backupA 696G 189G 507G - 1% 27% 1.00x ONLINE - > # zfs list backupA > NAME USED AVAIL REFER MOUNTPOINT > backupA 189G 486G 22K /backup-ext/backupA > # zfs get canmount,mountpoint backupA > NAME PROPERTY VALUE SOURCE > backupA canmount on local > backupA mountpoint /backup-ext/backupA local > > > It appears -N is ignored and the presence of canmount=on and mountpoint > being set results in automatic mounting regardless of whether or not -N > is given to the zpool import command. The expected behaviour is that -N > overrides canmount and mountpoint, leaving all filesystems in the pool > unmounted. > > Currently, I work around this by setting mountpoint=none at the root > prior to exporting (all datasets inherit mountpoint). I would prefer to > leave mountpoint set so that the automated task that uses the pools just > has to import and export them without twiddling properties. I will assume 'mount' and 'ls /backup-ext' show the file system as mounted. Checking the zfs properties documentation: https://docs.oracle.com/cd/E23824_01/html/821-1448/gazss.html#gdrcf Setting the canmount property to noauto means that the file system can only be mounted explicitly, not automatically. Have you tried setting canmount to noauto? Davidhome | help
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