saving "zfs send" to a Windows host

[Nikos Vassiliadis]

On 2019-04-23 10:26, Dr. Nikolaus Klepp wrote:
> Anno domini 2019 Tue, 23 Apr 12:42:43 +0700
>   Victor Sudakov scripsit:
>> Dear Colleagues,
>>
>> What is the most convenient way to stream a "zfs send" output through
>> the network to a file on a Windows host, for backup purposes?
>>
>> I used to use mount_smbfs to mount a Windows share and capture "zfs
>> send" output to a file, but now that SMBv1 is not supported anymore,
>> mount_smbfs has become useless.
>>
>> I don't mind installing some agent to the Windows host which will be
>> able to receive "zfs send" output to a network port (through netcat for
>> example) and save it there, but I don't know what it could be. It should
>> also support some form of authentication (at least not permit an
>> arbitrary host to overwrite the backups).
>>
>> Can you recommend something?
>>
>
> Use sshd, just like you would in unix only environment. Install OpenSSH on windows (e.g. https://docs.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse ), use public key authentication only without passphrase (yes, security, I know, but you probably want the thing wirking first). I do not know if the m$ sshd supports chroot, but if it does, use it.

Using ssh as transport is fine. I'd advice against saving zfs streams to
a non-ZFS filesystem because you will have no way to ensure that your
stream is OK. A single bit flip will render the stream unusable and you
will only discover this when you try to receive the stream.

But I guess that has to do with the importance of that particular backup.

Nikos