On 3/23/17 11:11 AM, Harry Putnam wrote:
This is my first actual usage of send/receive. I see the examples
given here:
https://docs.oracle.com/cd/E18752_01/html/819-5461/gbchx.html#gbinw
host1# zfs send tank/dana@snap1 | ssh host2 zfs recv newtank/dana
Note the `#' sign .. so root is sending, however in all of my installs,
unless measures are taken to defeat the defaults, root cannot login to
a solaris host.
So using the formula above leads to the root passwd not being
accepted.
I attempted to insert the sudo command like so:
# zfs send tank/dana@snap1 | ssh USER@host2 sudo zfs recv newtank/dana
But the sudo is rejected for lack of a tty.
So how is this normally accomplished. Does one have to setup a normal
user in some way (I mean besides setting USER role=root) or steps
taken with ssh like some kind of non passwd login?
1. make sure ssh allows root logins
jason@heimdall:/tmp# grep PermitRoot /etc/ssh/sshd_config
PermitRootLogin yes
2. Make sure root is a normal account
root@heimdall:/tmp# rolemod -K type=normal root
After these two steps you should be able to login as root.
3. If you dont _need_ the data encrypted then dont use ssh. It makes
things go slow :)
On the LAN I prefer to use mbuffer
on the sending side:
zfs send tank/dana@snap1 | mbuffer -s 128k -m 1000m -O target_host:31337
on the receiving side:
mbuffer -s 128k -m 1999m -I 31337 | zfs recv -vFd newtank
If you want compression, which i recommend unless you mostly sending
uncompressible data you can try:
sender:
zfs send tank/dana@snap1 | tamp | mbuffer -s 128k -m 1000m -O
target_host:31337
receiver:
mbuffer -s 128k -m 1999m -I 31337 | tamp -d | zfs recv -vFd newtank
And that's how I do that :)
Consider making the -s value for mbuffer match your zfs recordsize.
I am not sure if tamp is in the hipster repo. Joyent has it. It
originated here in 2008
https://blogs.oracle.com/timc/entry/tamp_a_lightweight_multi_threaded
Best,
j.
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