Date: Sun, 14 May 1995 12:20:04 -0700 From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> To: freebsd-bugs Subject: bin/410: bad144 Message-ID: <199505141920.MAA23301@freefall.cdrom.com> In-Reply-To: Your message of Sun, 14 May 1995 12:16:42 -0700 <199505141916.MAA04164@gndrsh.aac.dev.com>
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>Number: 410
>Category: bin
>Synopsis: bad144(8) should probably scan the bad block remap sectors
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs (FreeBSD bugs mailing list)
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun May 14 12:20:02 1995
>Originator: Rodney W. Grimes
>Organization:
Rod Grimes rgrimes@gndrsh.aac.dev.com
Accurate Automation Company Custom computers for FreeBSD
>Release: FreeBSD 2.1.0-Development i386
>Environment:
FreeBSD 2.0.5 and later that support bad144 -s processing
>Description:
From Bruce Evans:
Actually it would be a good idea to check the 126 + (5 * 2 -1) sectors
beyond the above `bend' and complain louder if any are bad. I'm not
sure if bad144 handles recursive remapping of bad sectors! I think
it handles bad sectors in the bad sector table itself OK. There are
5 copies of the table, and the first good one is used.
>How-To-Repeat:
Find a disk with a bad block in the bad144 spare sector area
and note that bad144 -s does not find it. Not sure what will
happen if bad144 goes to remap a block into this area and finds
that the remap block is bad.
>Fix:
For bad144 change bend to size in the scan loop, for the
kernel handling of recursive mapping unknown.
Index: bad144.c
===================================================================
RCS file: /home/ncvs/src/usr.sbin/bad144/bad144.c,v
retrieving revision 1.7
diff -c -r1.7 bad144.c
*** 1.7 1995/05/14 08:40:37
--- bad144.c 1995/05/14 19:15:12
***************
*** 221,227 ****
printf("Starting scan of %s at cylinder %ld\n",
name, bstart/spc);
step = trk;
! for (curr_sec = bstart; curr_sec < bend; curr_sec += step) {
int gotone = 0;
if (verbose) {
--- 221,227 ----
printf("Starting scan of %s at cylinder %ld\n",
name, bstart/spc);
step = trk;
! for (curr_sec = bstart; curr_sec < size; curr_sec += step) {
int gotone = 0;
if (verbose) {
>Audit-Trail:
>Unformatted:
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