Date: Fri, 25 Jul 2014 18:03:57 +0200 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: freebsd-current@freebsd.org, Freebsd fs <freebsd-fs@freebsd.org> Subject: Re: zfs send/recv: STILL invalid Backup Stream Message-ID: <2f191a3e72b9d94a15128de806f8d1c8@mailbox.ijs.si> In-Reply-To: <20140725134125.GA19293@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>
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2014-07-25 15:41, 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, Does it? If you are lucky it would fail again, but this time you'd know if it was a zfs or a network problem. > as the stream becomes a big file on disk. If it's an incremental stream and you have sufficient free space available, than it's all fine and you should try that. If storage is a problem you may try piping /dev/zero or /dev/random through ssh to feed a remote consumer, simulating a huge stream, and hope that it will eventually fail. > I'd like to get some help chasing what parameter(s) need to be fixed > here. [...] > 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? Sorry, not deep enough into fs or network to be able to tell. My guess it that it's a networking issue (not zfs), and not directly related to virtual memory or swap or ARC management. > To: freebsd-current@freebsd.org, Freebsd fs <freebsd-fs@freebsd.org> If you'd be able to demonstrate that this is unrelated to zfs, then the freebsd-net@freebsd.org mailing list would perhaps be a suitable place to continue this thread. Mark
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