mdadm --assemble --force repeatedly segfaults when run on a raid6 array with
more than two components marked as failed, so at least one needs its event
count forcibly updated. sb->events is accessed with sb NULL in update_super1,
called from Assemble (line 667 of Assemble.c). I think the following patch is
correct:
diff -uNrp mdadm-2.6.7.orig/Assemble.c mdadm-2.6.7/Assemble.c
--- mdadm-2.6.7.orig/Assemble.c 2008-06-18 20:23:36.000000000 +0100
+++ mdadm-2.6.7/Assemble.c 2008-06-18 20:23:47.000000000 +0100
@@ -656,7 +656,7 @@ int Assemble(struct supertype *st, char
continue;
}
tst = dup_super(st);
- if (tst->ss->load_super(st,fd, NULL)) {
+ if (tst->ss->load_super(tst, fd, NULL)) {
close(fd);
fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n",
devices[chosen_drive].devname);
Cheers,
Chris.
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