# [OmniOS-discuss] zfs send | recv

Guenther Alka alka at hfg-gmuend.de
Mon Jun 11 10:15:53 UTC 2018

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    I suppose you can either keep the last snaps identical on source and
    target with a simple zfs send recursively or
    you need a script that cares about and does a send per filesystem to
    allow a different number of snaps on the target system.

    This is not related to Nexenta but I saw the same on current OmniOS ->
    OmniOS as they use the same Open-ZFS base Illumos

    Gea
    @naapp-it.org

    Am 11.06.2018 um 10:58 schrieb Oliver Weinmann:
    >
    > Yes it is recursively. We have hundreds of child datasets so single
    > filesystems would be a real headache to maintain. L
    >
    > *Oliver Weinmann*
    > Head of Corporate ICT
    >
    > Telespazio VEGA Deutschland GmbH
    > Europaplatz 5 - 64293 Darmstadt - Germany
    > Ph: +49 (0)6151 8257 744 | Fax: +49 (0)6151 8257 799
    > oliver.weinmann at telespazio-vega.de
    > <mailto:oliver.weinmann at telespazio-vega.de>
    > www.telespazio-vega.de
    >
    > Registered office/Sitz: Darmstadt, Register court/Registergericht:
    > Darmstadt, HRB 89231; Managing Director/Geschäftsführer: Sigmar Keller
    >
    > *From:*OmniOS-discuss <omnios-discuss-bounces at lists.omniti.com> *On
    > Behalf Of *Guenther Alka
    > *Sent:* Montag, 11. Juni 2018 09:55
    > *To:* omnios-discuss at lists.omniti.com
    > *Subject:* Re: [OmniOS-discuss] zfs send | recv
    >
    > did you replicate recursively?
    > keeping a different snap history should be possible when you send
    > single filesystems.
    >
    >
    > gea
    > @napp-it.org
    >
    > Am 11.06.2018 um 09:11 schrieb Oliver Weinmann:
    >
    >     Hi,
    >
    >     We are replicating snapshots from a Nexenta system to an OmniOS
    >     system. Nexenta calls this feature autosync. While they say it is
    >     only 100% supported between nexenta systems, we managed to get it
    >     working with OmniOS too. It’s Not rocket science. But there is one
    >     big problem. In the autosync job on the Nexenta system one can
    >     specify how many snaps to keep local on the nexenta and how many
    >     to keep on the target system. Somehow we always have the same
    >     amount of snaps on both systems. Autosync always cleans all snaps
    >     on the dest that don’t exist on the source. I contacted nexenta
    >     support and they told me that this is due to different versions of
    >     zfs send and zfs recv. There should be a –K  flag, that instructs
    >     the destination to not destroy snapshots that don't exist on the
    >     source. Is such a flag available in OmniOS? I assume the flag is
    >     set on the sending side so that the receiving side has to
    >     understand it.
    >
    >     Best Regards,
    >
    >     Oliver
    >
    >     *Oliver Weinmann*
    >     Head of Corporate ICT
    >
    >     Telespazio VEGA Deutschland GmbH
    >     Europaplatz 5 - 64293 Darmstadt - Germany
    >     Ph: +49 (0)6151 8257 744 | Fax: +49 (0)6151 8257 799
    >     oliver.weinmann at telespazio-vega.de
    >     <mailto:oliver.weinmann at telespazio-vega.de>
    >     www.telespazio-vega.de <http://www.telespazio-vega.de>
    >
    >     Registered office/Sitz: Darmstadt, Register court/Registergericht:
    >     Darmstadt, HRB 89231; Managing Director/Geschäftsführer: Sigmar Keller
    >
    >
    >
    >
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    >
    >
    > --

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