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Re: kern/37955: Kernel Panic NetBSD 4.0 blkfree

The following reply was made to PR kern/37955; it has been noted by GNATS.

From: "V.L. van den Berg" <>
To: David Holland <>
Subject: Re: kern/37955: Kernel Panic NetBSD 4.0 blkfree
Date: Tue, 11 Mar 2008 23:11:43 +0100

 Hi David,
 I'll check if there is enough space left on the device to perform the 
 operations you mentioned. Can you give me instructions on how to copy 
 the fs contents into one file? I've never done this before.
 David Holland schreef:
 > On Mon, Mar 10, 2008 at 01:31:52PM +0100, Vincent van den Berg wrote:
 >  > >Just to check, when you say clean, you mean like this, right?
 >  > >[snip]
 >  >
 >  > Hi David,
 >  > 
 >  > Yes, I forced fsck on all volumes. It goes through them like you 
 >  > described (Phases etc.) and it gives no errors.
 > Sigh. It would have been much simpler if the problem turned to be just
 > that the fs was corrupt. Or at least, simpler to make it work again.
 > I'm wondering if this is the same as or related to kern/37590.
 > Do you have enough disk space to make a copy of the contents of the fs
 > in a file? If you do, do that, fsck it, then use vnd(4) to mount the
 > file as a fs, and try running rsnapshot or rsync or whatnot. While
 > that's useless for backing up, if it works reliably, then we can be
 > pretty sure it's a usb issue and not a filesystem issue, which rules
 > out lots and lots of code that might be causing problems. On the other
 > hand, if it blows up that way too, then we can be pretty sure it's
 > *not* a usb issue.
 > Also, when sending mail, cc:; then it'll go 
 > into
 > the PR database so other developers can see, which is a good thing
 > anytime something mysterious is happening.

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