How can I access files from an old boot environment?

[NASbox]

I just upgraded from 11.1-U7 to 11.2-U7 and I forgot to back up a couple of small scripts that were stored in /root

I tried cd to /.zfs/snapshot/ but all it contains is 2019-11-28-16:20:43 which is a snapshot for freenas-boot/ROOT/11.2-U7.

How can I access the snapshots for freenas-boot/ROOT/11.1-U7 so I can access files in my old /root directory?

Output from zfs list -t all -r freenas-boot:

Code:

freenas-boot/ROOT                                              11.3G  95.8G   136K  none
freenas-boot/ROOT/11.0-U3                                       232K  95.8G   970M  /
freenas-boot/ROOT/11.0-U4                                       248K  95.8G   973M  /
freenas-boot/ROOT/11.1-RELEASE                                  424K  95.8G  1.08G  /
freenas-boot/ROOT/11.1-U4                                       452K  95.8G  1.09G  /
freenas-boot/ROOT/11.1-U5                                       452K  95.8G  1.10G  /
freenas-boot/ROOT/11.1-U6                                       572K  95.8G  1.10G  /
freenas-boot/ROOT/11.1-U6.3                                     440K  95.8G  1.04G  /
freenas-boot/ROOT/11.1-U7                                      9.32G  95.8G  1.07G  /
freenas-boot/ROOT/11.1-U7@2017-09-20-01:21:53                  4.05M      -   980M  -
freenas-boot/ROOT/11.1-U7@2017-09-19-23:36:41                  4.06M      -   980M  -
freenas-boot/ROOT/11.1-U7@2017-09-29-02:04:28                   969M      -   970M  -
freenas-boot/ROOT/11.1-U7@2017-12-15-20:16:16                   971M      -   973M  -
freenas-boot/ROOT/11.1-U7@2018-05-03-01:15:15                  1.08G      -  1.08G  -
freenas-boot/ROOT/11.1-U7@2018-06-18-15:51:46                  1.09G      -  1.09G  -
freenas-boot/ROOT/11.1-U7@2018-10-11-17:12:16                  1.09G      -  1.10G  -
freenas-boot/ROOT/11.1-U7@2019-01-16-03:04:16                  1.09G      -  1.10G  -
freenas-boot/ROOT/11.1-U7@2019-01-29-15:38:10                  1.04G      -  1.04G  -
freenas-boot/ROOT/11.2-U7                                      2.01G  95.8G  1.02G  /
freenas-boot/ROOT/11.2-U7@2019-11-28-16:20:43                  1017M      -  1018M  -
freenas-boot/ROOT/Initial-Install                                 8K  95.8G   980M  legacy
freenas-boot/ROOT/default                                       232K  95.8G   980M  legacy
freenas-boot/ROOT/default-20190917-081209                       360K  95.8G  1018M  legacy
freenas-boot/grub                                              7.94M  95.8G  7.94M  legacy

 

[Fredda]

You'll need to do the following:

Temporary move the mountpoint:
zfs set mountpoint=/tmp/mnt freenas-boot/ROOT/11.1-U7

Mount it:
mkdir /tmp/mnt
zfs mount freenas-boot/ROOT/11.1-U7

get you stuff:
cd /tmp/mnt/.zfs
.....

Unmount it and restore the mountpoint:
umount freenas-boot/ROOT/11.1-U7
zfs set mountpoint=/ freenas-boot/ROOT/11.1-U7

Maybe there is a more elegant way, but this worked for me.

 

[Jailer]

Have you tried booting into the old boot environment and getting them from there?

 

[NASbox]

Unmount it and restore the mountpoint:
umount freenas-boot/ROOT/11.1-U7
zfs set mountpoint=/ freenas-boot/ROOT/11.1-U7

Thanks... I got what I needed

For the benefit of other, the unmount statement didn't work for me

#>umount freenas-boot/ROOT/11.1-U7
umount: freenas-boot/ROOT/11.1-U7 : statfs: No such file or directory
umount: freenas-boot/ROOT/11.1-U7 : unknown file system

and I had to use:

umount /tmp/mnt

I also chose to cleanup with:

rmdir /tmp/mnt

Have you tried booting into the old boot environment and getting them from there?

Thanks for the reply...

I was fixated on using the new environment, but I guess there is no reason I couldn't have done that since I haven't updated my pools yet. A month from now when I update my pools, I will have no choice.