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Date: Fri, 7 Feb 1997 19:58:26 -0500 (EST)
From: Robert Sexton <robert@kudra.com>
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Subject: kern/2690: When Using ccd in a mirror mode, file creation fails,
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>Number:         2690
>Category:       kern
>Synopsis:       When Using ccd in a mirror mode, file creation fails,
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Feb  7 17:00:08 PST 1997
>Last-Modified:
>Originator:     Robert Sexton
>Organization:
Robert Sexton - robert@kudra.com
>Release:        FreeBSD 2.1.6-RELEASE i386
>Environment:
2.1-stable as of 6 Feb - 1997

SCSI-2 drives, on an adaptec 2940 controller.
ccdconfig ccd0 128 6 /dev/sd0f /dev/sd2f

>Description:

In testing ccd for use as a disk mirroring facility, tests determined
that disk failure could cause a filesystem inconsistency.  For testing
purposes, I set up two identical disk slices, and mirrored them with
ccd.  Whne I turned off the external drive, copies to the ccd device
failed as expected, but I was able to unlink existing files.  When I
brought the external drive back on line, fsck found the unlinked
files, and dutifully placed them in lost+found.  CCD did not report
the write failure to syslog.

>How-To-Repeat:

	See above.

>Fix:
	
	

>Audit-Trail:
>Unformatted:
but rm works