Bug 94227

The hardware is a Fujitsu-Siemens Lifebook C-6565 laptop (PIII) on which
I've run FreeBSD 5.4 for quite some time, as well as some earlier releases without problems.

On first installation of 6.0, I got 'no dump device', followed by restart. This was a full installation, with reformatting of disks, as well as resetting boot manager to none.  Second attempt worked.

While I was reestablishing my old system, the same problem appeared again, while
I was rm-rf-ing some old disk structures in one console, while working in another. This is the relevant parts from
the /var/log/messages file -- I'm including all lines with the same timestamp.

Mar  8 13:42:22  syslogd: kernel boot file is /boot/kernel/kernel
Mar  8 13:42:22  kernel: subdisk0: detached
Mar  8 13:42:22  kernel: ad0: detached
Mar  8 13:42:22  kernel: unknown: TIMEOUT - READ_DMA retrying (1 retry left) LBA=19305279
Mar  8 13:42:22  kernel: unknown: timeout waiting to issue command
Mar  8 13:42:22  kernel: unknown: error issueing READ_DMA command
Mar  8 13:42:22  kernel: g_vfs_done():ad0s1f[WRITE(offset=98304, length=16384)]error = 6
Mar  8 13:42:22  kernel: g_vfs_done():ad0s1f[WRITE(offset=770048, length=16384)]error = 6
Mar  8 13:42:22  kernel: g_vfs_done():ad0s1f[WRITE(offset=786432, length=16384)]error = 6
.. etc, followed by some 

Mar  8 13:42:22  kernel: g_vfs_done():ad0s1f[READ(offset=6770188288, length=2048)]error = 5
Mar  8 13:42:22  kernel: g_vfs_done():ad0s1f[READ(offset=6770188288, length=2048)]error = 6
Mar  8 13:42:22  kernel: g_vfs_done():ad0s1f[READ(offset=6770190336, length=2048)]error = 6
.. etc
Mar  8 13:42:22  kernel: panic: softdep_setup_freeblocks: inode busy
Mar  8 13:42:22  kernel: Uptime: 20m30s
Mar  8 13:42:22  kernel: Cannot dump. No dump device defined.
Mar  8 13:42:22  kernel: Automatic reboot in 15 seconds - press a key on the console to abort
Mar  8 13:42:22  kernel: --> Press a key on the console to reboot,
Mar  8 13:42:22  kernel: --> or switch off the system now.
Mar  8 13:42:22  kernel: Rebooting...


Just in case ad0 should be of interest,

Mar  8 13:20:49  kernel: ad0: 9590MB <TOSHIBA MK1016GAP U1.11 A> at ata0-master UDMA33

.. 

A related problem seems to have been reported earlier ... but in that case
it seems to be traced to a Sil3112 controller.  Nothing like that on
the Lifebook. 

The C-6565 does not seem to be supported any more, so there are no
BIOS updates to be found.

How-To-Repeat: I have not yet found a way to make the problem stand still. On the other
hand it doesn't seem to repeat too often to make it unbearable ... so far.