I have a desktop system with multiple zfs file systems. The pool is called zroot. I want to snapshot two of these filesystems and exclude any zfs filesystems that mount below those mount points. I believe that requires -R option to prevent recursive snapshots but I may be mistaken.
The filesystems available are:
What I want backed up using snapshots is /root (the root user home directory) and /usr/home (the rest of the user home directories), and nothing else.
I do not want /var, /var, or the rest of /usr.
My command for this is:
When run with the -nv option this shows:
When this is run without the dry run option (-n) there is no snapshot created in /.zfs/snapshot but there is one created in /usr/home/.zfs/snapshot. The only way I am able to get /root in a snapshot is to do a recursive snapshot of the entire zroot pool. Which I wish to avoid because there are directories under/var which frequently have large changes in content. That causes the size of recursive snapshots to expand to the point that the system is hobbled for lack of disk space.
How do I accomplish what I seek to do: short of renaming /root to /root2, creating a filesystem called /root, and copying the contents of /root2 to /root?
The filesystems available are:
Code:
NAME USED AVAIL REFER MOUNTPOINT
zroot 480G 411G 96K /zroot
zroot/ROOT 359G 411G 96K none
zroot/ROOT/default 359G 411G 39.2G
/zroot/tmp 743M 411G 3.51M /tmp
zroot/usr 46.5G 411G 96K /usr
zroot/usr/home 45.8G 411G 43.9G /usr/home
zroot/usr/ports 751M 411G 751M /usr/ports
zroot/usr/src 96K 411G 96K /usr/src
zroot/var 1.48G 411G 96K /var
zroot/var/audit 96K 411G 96K /var/audit
zroot/var/crash 96K 411G 96K /var/crash
zroot/var/log 15.8M 411G 10.8M /var/log
zroot/var/mail 184K 411G 120K /var/mail
zroot/var/tmp 1.47G 411G 192M /var/tmpWhat I want backed up using snapshots is /root (the root user home directory) and /usr/home (the rest of the user home directories), and nothing else.
I do not want /var, /var, or the rest of /usr.
My command for this is:
Code:
for FS in zroot zroot/usr/home ; do /usr/local/sbin/zfsnap snapshot -nv -a 48h -s -S -R $FS ; doneWhen run with the -nv option this shows:
Code:
/sbin/zfs snapshot zroot@2019-11-26_14.03.09--48h
/sbin/zfs snapshot zroot/usr/home@2019-11-26_14.03.09--48hWhen this is run without the dry run option (-n) there is no snapshot created in /.zfs/snapshot but there is one created in /usr/home/.zfs/snapshot. The only way I am able to get /root in a snapshot is to do a recursive snapshot of the entire zroot pool. Which I wish to avoid because there are directories under/var which frequently have large changes in content. That causes the size of recursive snapshots to expand to the point that the system is hobbled for lack of disk space.
How do I accomplish what I seek to do: short of renaming /root to /root2, creating a filesystem called /root, and copying the contents of /root2 to /root?