Date: Thu, 25 Oct 2007 01:39:20 +0100 From: Bruce Cran <bruce@cran.org.uk> To: RW <fbsd06@mlists.homeunix.com> Cc: questions@freebsd.org Subject: Re: Can't overwrite a particular swap partition Message-ID: <471FE5B8.8080806@cran.org.uk> In-Reply-To: <20071025005103.29d5040c@gumby.homeunix.com.> References: <20071025005103.29d5040c@gumby.homeunix.com.>
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RW wrote: > I have two swap partitions, ad4s1b is part of my main slice, and ad6s1b > is on a second drive. The permissions are the same, but I can't > overwrite the second one. The same thing happens whether I use swapoff > or reboot into single user mode. > > What's the difference? > > # dd if=/dev/random of=/dev/ad4s1b bs=1m > dd: /dev/ad4s1b: end of device > 4097+0 records in > 4096+0 records out > 4294967296 bytes transferred in 245.745739 secs (17477281 bytes/sec) > > # dd if=/dev/random of=/dev/ad6s1b bs=1m > dd: /dev/ad6s1b: Operation not permitted > 1+0 records in > 0+0 records out > 0 bytes transferred in 0.053829 secs (0 bytes/sec) > > # ls -l /dev/ad*1b > crw-r----- 1 root operator 0, 125 Oct 25 00:25 /dev/ad4s1b > crw-r----- 1 root operator 0, 132 Oct 24 20:23 /dev/ad6s1b > This looks like a geom permission problem, though it sounds like it should't be occurring. Does setting kern.geom.debugflags=16 solve this? -- Bruce
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