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Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram

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From: Christoph Hellwig
Subject: Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram
Date: Thursday, December 2, 2010 - 7:11 am

I'm pretty sure you have CONFIG_DEBUG_BLOCK_EXT_DEVT enabled.  This
option must never be enabled, as it causes block devices to be
randomly renumered.  Together with the ramdisk driver overloading
the BLKFLSBUF ioctl to discard all data it guarantees you to get
data loss like yours.

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Messages in current thread:
Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Spelic, (Thu Dec 2, 6:55 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Christoph Hellwig, (Thu Dec 2, 7:11 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Spelic, (Thu Dec 2, 7:14 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Spelic, (Thu Dec 2, 7:14 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Christoph Hellwig, (Thu Dec 2, 7:17 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Mike Snitzer, (Thu Dec 2, 2:22 pm)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Mike Snitzer, (Thu Dec 2, 3:08 pm)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Dave Chinner, (Thu Dec 2, 4:07 pm)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Spelic, (Fri Dec 3, 7:07 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Nick Piggin, (Fri Dec 3, 10:11 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Ted Ts'o, (Fri Dec 3, 11:15 am)
Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram, Dave Chinner, (Sun Dec 5, 9:09 pm)
NFS corruption on ENOSPC (was: Re: Bugs in mkfs.xfs, devic ..., Spelic, (Mon Dec 6, 5:20 am)
Re: NFS corruption on ENOSPC (was: Re: Bugs in mkfs.xfs, d ..., Trond Myklebust, (Mon Dec 6, 6:33 am)