Date: Wed, 22 Sep 2010 15:06:47 +0100 From: Karl Pielorz <kpielorz_lst@tdx.co.uk> To: freebsd-ports@FreeBSD.org Subject: 'mbuffer' broken for network support / pipes under 7.2-R / 8.1-R? Message-ID: <B266E3BF267EA77C5E099324@HexaDeca64.dmpriest.net.uk>
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Hi, I've got the port of mbuffer (/usr/ports/misc/mbuffer) installed on a number of machines (amd64/FreeBSD 6.4-S, 7.2-S and 8.1-R) - but it seems to have issues... Firstly - any attempt to use the 'network' options of it, fail miserably (this is where mbuffer sends the data via tcp, instead of stdout) - e.g. " tester# mbuffer -I 10000 Assertion failed: ((err == 0) && (bsize == sizeof(rcvsize))), function openNetworkInput, file mbuffer.c, line 1358. Abort (core dumped) " None of the network options (for sending, or receiving) seem to work - they all fail with the above assert under 7.2/8.1 Under 6.4 - they 'seem' to work, but you get a warning "mbuffer: warning: unable to set socket receive buffer size: No buffer space available" spat out. Also, I've noticed - if using mbuffer as part of a chain, it fails to finish under 7.2/8.1 - e.g. " tester# cat /usr/src/COPYRIGHT | ssh root@othermachine "cat >test" " Works fine. " tester# cat /usr/src/COPYRIGHT | mbuffer | ssh root@othermachine "cat >test" " Completes the transfer fine, but then 'hangs forever' - hitting CTRL-C nets: "mbuffer: warning: error during output to <stdout>: canceled" The same on an older 6.4 based host, completes fine. Anyone know about this, or can think of any workarounds? - 'mbuffer' is very handy (not only for speeding I/O but also rate limiting on transfers etc.) Thanks, -Karl
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