setup HOST ubuntu-21.10
Vbox VM OI/hipster
Installed from 2021.04.31
updated 220114; uname -a
SunOS oi 5.11 illumos-c12f119108 i86pc i386 i86pc
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Having trouble getting send/recv working to expectations. Maybe
expectations are wrong.
I studied up a bit in oracle docs on send/recv But skimming thru
again just now I don't see a zfs multipart fs being send/recv'd.
Examples I find are all like: zfs send p0/one@snp | zfs recv p1/one
Maybe using the -R operator but not sure if there are examples of
mutipart zfs fs being send/recv 'ed I hav'nt studied beyond the basic
send/recv.
It looked much more complicated using the -R operator.
So rsynced a bunch of data from a defunct windows machine using
SystemRescue on usb stick to get access to the data.
I rsync'ed some 283 GB of data to ( an OI running from Vbox vm) to
p0/rhosts/2x2/F-win most of F: drive on the windows mach
rsync -vv -rlptgoD --stats /sdd1/ OI:/rhosts/2x2/F-win
Eventually produced 283 GB of data at OI:/rhosts/2x2/F-win. All in
the last segment F-win.
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This may be a good place to explain that both file systems I worked on
are setting on separate raidz2 pools.
pool p0 has 9 180GB discs
pool p1 has 6 190GB discs
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I then decided to try my hand at send/recv but on the one machine zfs
fs to zfs fs.
I created a similarly named p1/rhosts/2x2/F-win
unmounted both fs and:
zfs send p0/rhost/2x2/F-win@snap | zfs recv -F p1/rhosts/2x2/F-win
And that started working but I had so much trouble from floundering
like a large trout for hours that I gave up on it waiting to learn
more.
I did get the data moved from the win-mach to OI at least.
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OK, so I have a question or two but will start with this:
Is it even possible to send/recv a multi segmented zfs FS to another
multi segmented zfs fs.
Or is it necessary to break it down so you are sending only 1 segment
at one time.
so like: p0/rhosts@snap to p1/rhosts
p0/rhosts/2x2@snap to p1/rhosts/2x2
And so on till all segments are sent.
I'd be happy enough to learn the way just above (send 1 segment at a
time) is best but would really like to
send/recv pool0/seg1/seg2/seg3 all at once to pool1/seg1/seg2/seg3
One thing that seems dubious is that I'd be faced with which snapshot
to use and I think that might rule the whole thing out.
In fact I think I just talked myself out of the whole idea of sending all
'segs' at once.
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