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Date:      Fri, 25 Jul 2014 10:03:18 -0400
From:      Allan Jude <allanjude@freebsd.org>
To:        freebsd-current@freebsd.org
Subject:   Re: zfs send/recv: STILL invalid Backup Stream
Message-ID:  <53D263A6.5010907@freebsd.org>
In-Reply-To: <258d3f814c0d0a1159608d9cf09d65ad@thebighonker.lerctr.org>
References:  <cc635a377e817cb57d27650ed3e558f4@thebighonker.lerctr.org> <3d2aac84d962a703fbf56a864ba5f19c@mailbox.ijs.si> <c93ef94a8e9e076b86a65f4986d0e30d@thebighonker.lerctr.org> <9eef3e7e964cb33fd163cc2f9300f326@mailbox.ijs.si> <d5bda7f9ad7f86ec35ab6ba5571aa8bc@thebighonker.lerctr.org> <fbf874048b94066aabc4e656e2d3157d@thebighonker.lerctr.org> <c8e77e506bdba2bc1b9dd20ada388879@mailbox.ijs.si> <53D1AB3D.1060205@freebsd.org> <33c478c3120c21d6cb9c325cc1119cf8@thebighonker.lerctr.org> <60845088153247fa31c50c9f52ef72cb@mailbox.ijs.si> <20140725134125.GA19293@thebighonker.lerctr.org> <258d3f814c0d0a1159608d9cf09d65ad@thebighonker.lerctr.org>

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On 2014-07-25 09:49, Larry Rosenman wrote:
> On 2014-07-25 08:41, Larry Rosenman wrote:
>> On Fri, Jul 25, 2014 at 11:58:48AM +0200, Mark Martinec wrote:
>>> Don't know, I'd guess some network-related memory limit is being hit
>>> on the sending site.
>>>
>>> Why not try to decouple the 'zfs send' from a network copy and ssh:
>>> Login to a remote side, do a 'zfs send' to some local temporary file
>>> there, then feed that file to ssh and send it over to a home host,
>>> where it can be piped into some simple program like md5 or 'wc -c'
>>> instead of a zfs recv.
>>>
>> I think I've done that, but it sort of defeats the purpose, as the str=
eam
>> becomes a big file on disk.
>>
>> I'd like to get some help chasing what parameter(s) need to be fixed
>> here.
>>
> sysctl output and other things at:
>=20
> http://www.lerctr.org/~ler/FreeBSD/
>=20
>=20
>> Can I get some ideas on:
>> 1) what MIGHT need tweaking
>> 2) would (k|d)trace help?
>> 3) what else could we find out what's being told no memory?
>=20
> I *CAN* give SSH/Root/etc access to BOTH boxes on request.
>=20
> What else do you need?
>=20
>=20

Try just ssh into the 'source' host, and do:
zfs send -v -R zroot@${DATE} > /dev/null

and see if it actually finishes, or if it runs out of memory again.

--=20
Allan Jude


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