Hello,
I have a few machines that run ZFS and one with UFS that I would like to do full-system backups to another machine running ZFS. For backing up the UFS system, I am just going to make a snapshot and use rsync to transfer the data to the backup server. For the ZFS systems, I would like to make ZFS snapshots and have those snapshots transferred to the backup server with
To create the snapshot, I do
So I get a pool that looks like this:
After the snapshot it looks like this:
Now, I would like to replicate the snapshost of bootpool, zroot and all child snapshots to a remote server with
Then I try to send over the snapshot of bootpool to a folder created in /BACKUP/server-bootpool/:
The backup machine's pool now looks like this:
All good so far. I am able to browse through the /BACKUP/server-4-bootpool directory on the backup machine.
Here is where I am having difficulty: I then try to replicate the zroot@14_dec_2014 snapshot to the backup machine. The only switch for
When I use the -R switch for
The command used:
My solution was to manually change all the mountpoints to their correct locations. I didn't have that many filesystems so it didn't take very long. Does anyone have any suggestions for this? I could see this getting quite time consuming if I had to change 10 mountpoints for every system I wanted to back up in this manner.
And I wanted to add that after changing the mountpoints, a
Edit: The
Thanks,
Manas
I have a few machines that run ZFS and one with UFS that I would like to do full-system backups to another machine running ZFS. For backing up the UFS system, I am just going to make a snapshot and use rsync to transfer the data to the backup server. For the ZFS systems, I would like to make ZFS snapshots and have those snapshots transferred to the backup server with
zfs send ... | ssh host zfs receive ...To create the snapshot, I do
zfs snapshot bootpool@14_dec_2014 && zfs snapshot -r zroot@14_dec_2014So I get a pool that looks like this:
Code:
# zfs list -t all
NAME USED AVAIL REFER MOUNTPOINT
bootpool 486M 1.45G 485M /bootpool
zroot 2.14G 443G 96K none
zroot/ROOT 814M 443G 96K none
zroot/ROOT/default 813M 443G 813M /
zroot/tmp 144K 443G 144K /tmp
zroot/usr 1.34G 443G 96K /usr
zroot/usr/home 216K 443G 216K /usr/home
zroot/usr/ports 863M 443G 863M /usr/ports
zroot/usr/src 505M 443G 505M /usr/src
zroot/var 3.89M 443G 96K /var
zroot/var/crash 96K 443G 96K /var/crash
zroot/var/log 3.50M 443G 3.50M /var/log
zroot/var/mail 108K 443G 108K /var/mail
zroot/var/tmp 96K 443G 96K /var/tmp
Code:
# zfs list -t all
NAME USED AVAIL REFER MOUNTPOINT
bootpool 486M 1.45G 485M /bootpool
bootpool@14_dec_2014 0 - 485M -
zroot 2.14G 443G 96K none
zroot@14_dec_2014 0 - 96K -
zroot/ROOT 814M 443G 96K none
zroot/ROOT@14_dec_2014 0 - 96K -
zroot/ROOT/default 814M 443G 813M /
zroot/ROOT/default@14_dec_2014 844K - 813M -
zroot/tmp 144K 443G 144K /tmp
zroot/tmp@14_dec_2014 0 - 144K -
zroot/usr 1.34G 443G 96K /usr
zroot/usr@14_dec_2014 0 - 96K -
zroot/usr/home 216K 443G 216K /usr/home
zroot/usr/home@14_dec_2014 0 - 216K -
zroot/usr/ports 863M 443G 863M /usr/ports
zroot/usr/ports@14_dec_2014 0 - 863M -
zroot/usr/src 505M 443G 505M /usr/src
zroot/usr/src@14_dec_2014 0 - 505M -
zroot/var 3.98M 443G 96K /var
zroot/var@14_dec_2014 0 - 96K -
zroot/var/crash 96K 443G 96K /var/crash
zroot/var/crash@14_dec_2014 0 - 96K -
zroot/var/log 3.59M 443G 3.50M /var/log
zroot/var/log@14_dec_2014 92K - 3.50M -
zroot/var/mail 108K 443G 108K /var/mail
zroot/var/mail@14_dec_2014 0 - 108K -
zroot/var/tmp 96K 443G 96K /var/tmp
zroot/var/tmp@14_dec_2014 0 - 96K -Now, I would like to replicate the snapshost of bootpool, zroot and all child snapshots to a remote server with
zfs send/receive. On the destination, I created the zroot/BACKUP filesystem:
Code:
NAME USED AVAIL REFER MOUNTPOINT
bootpool 486M 1.45G 485M /bootpool
zroot 4.14G 7.94T 219K none
zroot/BACKUP 219K 7.94T 219K /BACKUP
zroot/ROOT 1.07G 7.94T 219K none
zroot/ROOT/default 1.07G 7.94T 1.07G /
zroot/tmp 151M 7.94T 151M /tmp
zroot/usr 2.44G 7.94T 219K /usr
zroot/usr/home 23.2M 7.94T 23.2M /usr/home
zroot/usr/ports 1.56G 7.94T 1.56G /usr/ports
zroot/usr/src 874M 7.94T 874M /usr/src
zroot/var 1.61M 7.94T 219K /var
zroot/var/crash 219K 7.94T 219K /var/crash
zroot/var/log 757K 7.94T 757K /var/log
zroot/var/mail 237K 7.94T 237K /var/mail
zroot/var/tmp 219K 7.94T 219K /var/tmpThen I try to send over the snapshot of bootpool to a folder created in /BACKUP/server-bootpool/:
zfs send bootpool@14_dec_2014 | ssh server-3 zfs receive zroot/BACKUP/server-4-bootpoolThe backup machine's pool now looks like this:
Code:
# zfs list -t all
NAME USED AVAIL REFER MOUNTPOINT
bootpool 486M 1.45G 485M /bootpool
zroot 4.36G 7.94T 219K none
zroot/BACKUP 226M 7.94T 219K /BACKUP
zroot/BACKUP/server-4-bootpool 226M 7.94T 226M /BACKUP/server-4-bootpool
zroot/BACKUP/server-4-bootpool@14_dec_2014 0 - 226M -
zroot/ROOT 1.07G 7.94T 219K none
zroot/ROOT/default 1.07G 7.94T 1.07G /
zroot/tmp 151M 7.94T 151M /tmp
zroot/usr 2.44G 7.94T 219K /usr
zroot/usr/home 23.2M 7.94T 23.2M /usr/home
zroot/usr/ports 1.56G 7.94T 1.56G /usr/ports
zroot/usr/src 874M 7.94T 874M /usr/src
zroot/var 1.61M 7.94T 219K /var
zroot/var/crash 219K 7.94T 219K /var/crash
zroot/var/log 757K 7.94T 757K /var/log
zroot/var/mail 237K 7.94T 237K /var/mail
zroot/var/tmp 219K 7.94T 219K /var/tmpHere is where I am having difficulty: I then try to replicate the zroot@14_dec_2014 snapshot to the backup machine. The only switch for
zfs send that I found for recursively sending snapshots from a base filesystem was:
Code:
-R Generate a replication stream package, which will replicate
the specified filesystem, and all descendent file systems, up
to the named snapshot. When received, all properties, snap-
shots, descendent file systems, and clones are preserved.
If the -i or -I flags are used in conjunction with the -R
flag, an incremental replication stream is generated. The
current values of properties, and current snapshot and file
system names are set when the stream is received. If the -F
flag is specified when this stream is received, snapshots and
file systems that do not exist on the sending side are
destroyed.When I use the -R switch for
zfs send, the resulting filesystems keep their original mountpoints: /usr for example instead of /BACKUP/server-4-zroot/usrThe command used:
zfs send -R zroot@14_dec_2014 | ssh server-3 zfs receive -F zroot/BACKUP/server-3-zrootMy solution was to manually change all the mountpoints to their correct locations. I didn't have that many filesystems so it didn't take very long. Does anyone have any suggestions for this? I could see this getting quite time consuming if I had to change 10 mountpoints for every system I wanted to back up in this manner.
And I wanted to add that after changing the mountpoints, a
zfs send -R ... does not reset the new mountpoints so this is good.Edit: The
-u flag for zfs receive is also useful. The received filesystem is not mounted.Thanks,
Manas
