Date: Sat, 5 Sep 1998 03:32:38 -0400 From: erics@now.com (Eric Siegerman) To: fty@cisco.com Cc: freebsd-stable@FreeBSD.ORG Subject: Re: 8mm tape block size max - changed? Message-ID: <m0zFCpq-00001KC@baal.now.com> In-Reply-To: <199809040257.VAA17656@nospam.hiwaay.net> from "David Kelly" at Sep 3, 98 10:57:35 pm
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David Kelly wrote: > > Frank Terhaar-Yonkers writes: > > > > I recently upgraded from 2.0.x where I routinely used a block size of > > 128b with tar and dump. I presume you mean by this: tar -b128 ... # ie. 128*512 = 64 KB dump 0b 128 ... # ie. 128 KB > > Using 2.1.7 I get: st0: 64512-byte record too big > > when I try to read the old tapes. > > THe 64512 number you quote has everyone confused. This sounds *really* familiar -- that number specifically. Alas, it was two or three years ago; I can't remember the specifics. But a possible clue is that 64512 is exactly 63 KB, ie. ((unsigned short) -1024). Sign-extension or integer-overflow problem, perhaps? Chad R. Larson wrote: > > dd if=/dev/tape of=/tmp/junk bs=64k count=1 > ls -l /tmp/junk > > should tell you the size of the tape blocks. I for one am most curious to know what this produces. Might the old kernel have been rebuilt with a larger maximum block size than the default 64 KB? -- | | /\ |-_|/ > Eric Siegerman, Toronto, Ont. erics@now.com | | / The Rock & Roll Baby Theorem: Syllables(x+"baby") = Syllables("baby"+x) = Syllables(x) + 2 SemanticContent(x+"baby") = SemanticContent("baby"+x) = SemanticContent(x) - Anonymous To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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