Date: Thu, 26 Mar 2009 17:01:06 +0000 From: David Malone <dwmalone@maths.tcd.ie> To: "Mikhail T." <mi+thun@aldan.algebra.com> Cc: Danny Braniss <danny@cs.huji.ac.il>, freebsd-stable@freebsd.org, fs@freebsd.org Subject: Re: dump | restore fails: unknown tape header type 1853384566 Message-ID: <20090326170106.GA28100@walton.maths.tcd.ie> In-Reply-To: <49C92060.4060303@aldan.algebra.com> References: <49C83673.3000604@aldan.algebra.com> <200903241537.36515.doconnor@gsoft.com.au> <49C87E0D.5090501@aldan.algebra.com> <E1Lm1J9-000Ah6-Kf@kabab.cs.huji.ac.il> <49C92060.4060303@aldan.algebra.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Mar 24, 2009 at 02:03:12PM -0400, Mikhail T. wrote: > Same problem: > > restore -rf ibmo.0.2009-03-24.dump > load: 0.55 cmd: restore 11303 [nbufkv] 3.53u 3.91s 4% 27980k > unknown tape header type 213474529 > abort? [yn] > > Please, advise. Thanks! Yours, Hi Mikhail, If you actually need to get a dump back that restore can't read, you can try the "-D" option that I added a few years ago. Dump and restore expect things to be in a block format, but if (say) dump outputs a few bytes into the stream due to a bug, then the entire end of the dump can become unreadable. The -D option to restore tells it to try hard to get back in sync again. I'd guess you've tripped over either a bug in dump or restore. If you can file a PR, particularly with access to a sample dump, then I can have a look and see if I can figure out what's going on. Daid.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20090326170106.GA28100>