dump hangs on 7.1

[Mel Flynn]

On Sunday 12 July 2009 11:03:00 Len Conrad wrote:
> >On Friday 10 July 2009 08:29:01 Len Conrad wrote:
> >> FreeBSD 7.1-RELEASE #0: Thu Jan  1 14:37:25 UTC 2009
> >> root at logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
> >>
> >> CPU: Intel(R) Xeon(R) CPU           E5420  @ 2.50GHz (2496.26-MHz
> >> 686-class CPU) Origin = "GenuineIntel"  Id = 0x1067a  Stepping = 10
> >>   AMD Features=0x20100000<NX,LM>
> >>   AMD Features2=0x1<LAHF>
> >>   Cores per package: 4
> >> real memory  = 3484745728 (3323 MB)
> >> avail memory = 3405537280 (3247 MB)
> >> ACPI APIC Table: <DELL   PE_SC3  >
> >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
> >>  cpu0 (BSP): APIC ID:  0
> >>  cpu1 (AP): APIC ID:  1
> >>  cpu2 (AP): APIC ID:  2
> >>  cpu3 (AP): APIC ID:  3
> >>
> >>
> >> /sbin/dump -0uanL -f - / | ssh dump_images at xxx.net dd
> >> of=/var/ftp/dump_images/mx1-root-test
> >>
> >> dump has completed only once. Several other dumps have all gotten under
> >> way, target file is created and increases until the hang.
> >>
> >> CTRL-C gets back to shell,eg:
> >>
> >>   DUMP: Date of this level 0 dump: Fri Jul 10 10:25:33 2009
> >>   DUMP: Date of last level 0 dump: the epoch
> >>   DUMP: Dumping snapshot of /dev/da0s1d (/usr) to standard output
> >>   DUMP: mapping (Pass I) [regular files]
> >>   DUMP: mapping (Pass II) [directories]
> >>   DUMP: estimated 1713942 tape blocks.
> >>   DUMP: dumping (Pass III) [directories]
> >>   DUMP: dumping (Pass IV) [regular files]
> >> ^C  DUMP: Interrupt received.
> >>   DUMP: Do you want to abort dump?: ("yes" or "no") Killed by signal 2.
> >>   DUMP: Broken pipe
> >>   DUMP: The ENTIRE dump is aborted.
> >>
> >> Hangs always in Pass IV
> >
> >What's the output ps -auwwx|grep dump at the time of the dump.
>
> when the dump hangs:
>
> ps auxww | grep dump
>
> root    61360  0.0  0.0  3128  1168  p0  I+    1:47PM   0:00.06 /sbin/dump
> -0uanL -f - / (dump)
>
> root    61361  0.0  0.1  5560  2768  p0  I+    1:47PM   0:03.65 ssh
> xxx at xxx.net dd of=/var/ftp/dump_images/mx1-root-test
>
> root    61364  0.0  0.0  3128  1528  p0  I+    1:47PM   0:00.36 dump:
> /dev/da0s1a: pass 4: 92.66% done, finished in 0:00 at Sun Jul 12 13:47:52
> 2009 (dump)

procstat -k 61364 please?
Is the percentage always the same for the same disk?
If you kill dd on the other side, does dump notice it?
-- 
Mel