Date: Thu, 10 Sep 2020 16:34:58 +0200 From: Christoph Brinkhaus <c.brinkhaus@t-online.de> To: Ludovit Koren <ludovit_koren@tempest.sk> Cc: freebsd-questions@freebsd.org Subject: Re: ZFS snapshot - rollback problem Message-ID: <20200910143458.GA83264@esprimo> In-Reply-To: <CADZBGL4C83JyMqHNP5A_aUV%2BddXxbd2F7RtCQhox4dCKKQAqLw@mail.gmail.com> References: <CADZBGL4C83JyMqHNP5A_aUV%2BddXxbd2F7RtCQhox4dCKKQAqLw@mail.gmail.com>
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On Thu, Sep 10, 2020 at 04:18:39PM +0200, Ludovit Koren wrote: > Hi, > > I have the following configuration: > > ~>uname -a > FreeBSD XxX 11.3-STABLE FreeBSD 11.3-STABLE #1 r354607: Mon Nov 11 > 12:19:28 CET 2019 root@jedi:/usr/obj/usr/src/sys/HP amd64 > ~>zfs list > NAME USED AVAIL REFER MOUNTPOINT > zroot 244G 0 10.7G /mnt > zroot/Centos8 6.80G 4.13G 2.67G - > zroot/msw7 44.9G 25.8G 19.1G - > zroot/swapdisk0 40.8G 20.6G 20.2G - > zroot/usr 131G 0 50.9G /usr > zroot/usr/home 80.1G 0 80.1G /usr/home > zroot/var 9.94G 0 9.94G /var > > After zfs snapshot, which I did on the root, I got: > ~>zfs list -t snapshot > NAME USED AVAIL REFER MOUNTPOINT > zroot@200909 1K - 10.7G - > zroot/Centos8@200909 1K - 2.67G - > zroot/msw7@200909 1K - 19.1G - > zroot/swapdisk0@200909 0 - 20.2G - > zroot/usr@200909 1K - 50.9G - > zroot/usr/home@200909 1K - 80.1G - > zroot/var@200909 1K - 9.94G - > > i.e. whole filesystem is read only. I am not able to do neither > rollback, nor destroy of the snapshot. Is there any possibility to > reset the filesystem to the read-write mode? I do not see there if it is read only or not. To change the readyonly property: zfs set readonly=off Mount to make it effective: zfs mount -a > > Any help is greatly appreciated. I hope my notes are correct and help you. Kind regards, Christoph
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