I was pigging out on vm today by using large pixmaps and windows, when
this happened:

Feb 22 06:46:59 charon /netbsd: sd1(bt0:1:0): volume overflow, info = 1295850 (d
ecimal)
Feb 22 06:47:00 charon /netbsd: sd1(bt0:1:0): illegal request
Feb 22 06:47:01 charon /netbsd: swap_pager_clean: clean of page 131a000 failed
Feb 22 06:47:01 charon /netbsd: swap_pager_clean: clean of page 403000 failed
Feb 22 06:47:01 charon /netbsd: sd1(bt0:1:0): illegal request
Feb 22 06:47:01 charon /netbsd: swap_pager_clean: clean of page 590000 failed
Feb 22 06:47:01 charon /netbsd: sd1(bt0:1:0): illegal request
Feb 22 06:47:01 charon /netbsd: swap_pager_clean: clean of page 1224000 failed
Feb 22 06:47:01 charon /netbsd: sd1(bt0:1:0): illegal request
[...and so on...]

What meant by 'volume overflow' in this case?

Now I have to reboot because I can't start emacs without seeing droves
of those messages fly past on the console.

Misc clues follow:

charon% limit
cputime         unlimited
filesize        unlimited
datasize        262144 kbytes
stacksize       8192 kbytes
coredumpsize    unlimited
memoryuse       17796 kbytes
descriptors     650 
memorylocked    17796 kbytes
maxproc         180 


charon% uname -a
NetBSD charon 1.0 NetBSD 1.0 (SORTOF) #46: Thu Feb  9 20:35:15 EST 1995     ken@charon:/usr/src/sys/arch/i386/compile/SORTOF i386

charon% pstat -s
Device      1K-blocks     Used    Avail Capacity  Type
/dev/sd0b        8000     2036     5964    25%    Interleaved
/dev/sd1b       65536    22068    43468    34%    Interleaved
Total           73536    24104    49432    33%

Feb 15 21:36:44 charon /netbsd: real mem  = 20578304
Feb 15 21:36:44 charon /netbsd: avail mem = 18247680

Feb 15 21:36:46 charon /netbsd: bt0 at isa0 port 0x330-0x333 irq 11: version 4.2
, sync, parity, 32 mbxs
Feb 15 21:36:46 charon /netbsd: bt0 targ 1: sync, offset 15, period 200nsec
Feb 15 21:36:47 charon /netbsd: bt0 targ 2: sync, offset 15, period 200nsec
Feb 15 21:36:47 charon /netbsd: scsibus0 at bt0
Feb 15 21:36:47 charon /netbsd: bt0 targ 0 lun 0: <QUANTUM Q280  76-45021  78  >
 SCSI1 direct fixed
Feb 15 21:36:47 charon /netbsd: sd0 at scsibus0: 76MB, 823 cyl, 6 head, 31 sec, 
512 bytes/sec
Feb 15 21:36:47 charon /netbsd: bt0 targ 1 lun 0: <CDC     94191-15        0136>
 SCSI1 direct fixed
Feb 15 21:36:47 charon /netbsd: sd1 at scsibus0: 632MB, 1632 cyl, 15 head, 52 se
c, 512 bytes/sec
Feb 15 21:36:47 charon /netbsd: bt0 targ 2 lun 0: <WangDAT Model 1300      02.1>
 SCSI1 sequential removable
Feb 15 21:36:48 charon /netbsd: st0 at scsibus0: rogue, drive empty
Feb 15 21:36:48 charon /netbsd: bt0 targ 3 lun 0: <HP      C2500A          3332>
 SCSI2 processor fixed
Feb 15 21:36:48 charon /netbsd: sj0 at scsibus0: HP ScanJet IIcx


("vm streched" XF86_W32 [but I expected this])
charon% ps avx|head
  PID STAT      TIME    SL    RE   VSZ  RSS   LIM TSIZ %CPU %MEM COMMAND
  208 S     15:29.16     1 75561 14520 3992     - 1860  4.9 28.6 /usr/X11R6/bin
  216 S      0:31.05     6 75557  1112  852     -   16  0.0  6.1 xconsole -geom
  577 I      0:05.21 39554 52883   616   48     -   44  0.0  0.4 xman