Date: Mon, 06 Aug 2001 18:15:41 +0300 From: Maxim Sobolev <sobomax@FreeBSD.org> To: Dima Dorfman <dima@unixfreak.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, phk@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/md md.c Message-ID: <3B6EB49D.87864E16@FreeBSD.org> References: <20010803202216.30EB13E31@bazooka.unixfreak.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Dima Dorfman wrote: > Maxim Sobolev <sobomax@FreeBSD.org> writes: > > sobomax 2001/08/02 03:19:14 PDT > > > > Modified files: > > sys/dev/md md.c > > Log: > > - Deny detaching requests until device is still open, otherwise it is possible > > to hang or panic kernel by detaching disk from which fs is mounted; > > When I proposed a similar patch some time ago, phk said that he would > like md(4) to behave "as much like a real disk as possible", which > included being able to go offline at any moment (in md terms, this > would mean detaching). This would be useful for testing such things > as a removable ATA flash drive going away. > > That said, detaching an md while it's mounted is only going to bite > more people as more people start using -current (esp. when it comes > closer to being -release), so this safeguard is a good idea. However, > it would still be nice to be able to turn it off when one wishes. I > propose to add a "force" option that will tell the driver to turn off > anti-foot shooting precautions such as this one. Attached is a patch > to do that. > > Comments? Thoughts? Looks fine to me. -Maxim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3B6EB49D.87864E16>