zfs send/recv: STILL invalid Backup Stream

Mark Martinec Mark.Martinec+freebsd at ijs.si
Fri Jul 25 00:46:50 UTC 2014


2014-07-25 01:36 Larry Rosenman wrote:

> #!/bin/sh
> DATE=`date "+%Y-%m-%d"`
> #DATE2=2013-03-24
> #DATE2=`date -v "-1d" "+%Y-%m-%d"`
> # snap the source
> ssh root at tbh.lerctr.org zfs snapshot -r zroot@${DATE}
> # zfs copy the source to here.
> ssh root at tbh.lerctr.org "zfs send  -v -R zroot@${DATE} | \
>      ssh home.lerctr.org \"zfs recv -F -u -v -d zroot/backups/TBH2\""

Btw, this double-ssh looks awkward, why not just:

   ssh root at tbh.lerctr.org "zfs send ..." | zfs recv ...

or better yet:

   ssh root at tbh.lerctr.org "zfs send ..." | mbuffer -m 16M | zfs recv ...

(The misc/mbuffer compensates for bursty zfs reads and writes.
  A note to myself: I should suggest to Allan to add mbuffer
  in a pipe as used in sysutils/zxfer, instead of patching zxfer
  for our local use :)

Mark


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