Edward Welbon wrote:
> Well, it looks much better, but I can't unmount /initrd or /dev/ram.
> Mount shows no evidence of /initrd but /proc/mounts does:
There does seem to be a "busy inode" problem in 2.1.49. I've added a
diagnostic check to invalidate_list to show the offending inodes, along
with their names (if any).
On my system at shutdown there is usually an unnamed, low-numbered inode
with count=1. The RedHat shutdown scripts check for failure of umount
and do a r/o remount, so it doesn't cause an fsck problem. But if this
is keeping your initrd from being released, then it would be a problem
on your system.
Anyway, we need to track down where the busy inodes are coming from. The
attached patch may help show what's going on -- you'll need to add a
#define INODE_PARANOIA to fs/inode.c to enable it. Then when you try a
umount dev it will show which inodes are busy ...
Regards,
Bill
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Content-Type: text/plain; charset=us-ascii; name="busy_49-patch"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; filename="busy_49-patch"
--- fs/inode.c.old Tue Aug 12 07:49:18 1997
+++ fs/inode.c Thu Aug 14 08:35:47 1997
@@ -290,6 +297,39 @@
}
busy = 1;
}
+
+#ifdef INODE_PARANOIA
+ /*
+ * Display the busy inodes
+ */
+ if (busy && root) {
+ struct list_head * tmp;
+ struct inode * inode;
+ struct dentry * alias;
+
+ printk("Busy Inodes for Device %s:\n", kdevname(dev));
+ for (tmp = head->next; tmp != head; tmp = tmp->next) {
+ inode = list_entry(tmp, struct inode, i_list);
+ if (inode->i_dev != dev)
+ continue;
+ if (inode == root)
+ continue;
+ if (!inode->i_count && !inode->i_state)
+ continue;
+ if (!list_empty(&inode->i_dentry)) {
+ alias = list_entry(inode->i_dentry.next,
+ struct dentry, d_alias);
+ printk("inode %s/%s: count=%d state=%lx\n",
+ alias->d_parent->d_name.name,
+ alias->d_name.name,
+ inode->i_count, inode->i_state);
+ } else
+ printk("inode %ld: count=%d state=%lx\n",
+ inode->i_ino, inode->i_count,
+ inode->i_state);
+ }
+ }
+#endif
return busy;
}
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