Last night's tar czf /dev/ht0 ... failed with "error waiting for process
to exit: child process lost (is SIGCHLD ignored or trapped?)". The
following messages appeared in syslog:
Jan 28 23:15:44 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:16:41 ursula last message repeated 2 times
Jan 28 23:17:15 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:18:34 ursula last message repeated 2 times
Jan 28 23:19:11 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:20:19 ursula last message repeated 2 times
Jan 28 23:21:28 ursula last message repeated 2 times
Jan 28 23:22:14 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:25:20 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:26:19 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:27:20 ursula last message repeated 2 times
Jan 28 23:28:23 ursula last message repeated 2 times
Jan 28 23:29:41 ursula last message repeated 2 times
Jan 28 23:30:14 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:31:13 ursula last message repeated 2 times
Jan 28 23:32:26 ursula last message repeated 2 times
Jan 28 23:33:38 ursula last message repeated 2 times
Jan 28 23:34:15 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:35:18 ursula last message repeated 2 times
Jan 28 23:36:25 ursula last message repeated 2 times
Jan 28 23:37:43 ursula last message repeated 2 times
Jan 28 23:38:21 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:39:07 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:40:18 ursula last message repeated 2 times
Jan 28 23:41:31 ursula last message repeated 2 times
Jan 28 23:42:01 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:43:42 ursula last message repeated 2 times
Jan 28 23:44:24 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:45:42 ursula last message repeated 2 times
Jan 28 23:46:26 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:47:12 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:47:55 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:49:31 ursula last message repeated 2 times
Jan 28 23:50:15 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:51:39 ursula last message repeated 2 times
Jan 28 23:52:05 ursula identd[29605]: from: 24.108.5.109 ( taiga.gmcl.com ) for:
3965, 25
Jan 28 23:52:05 ursula identd[29605]: Successful lookup: 3965 , 25 : root.root
Jan 28 23:52:11 ursula kernel: ide-tape: bug: nr_stages should be 0 now
Jan 28 23:52:11 ursula kernel: ide-tape: ide-tape pipeline bug
Here are the IDE boot messages. There are no other IDE devices other than
the tape.
PIIX4: IDE controller on PCI bus 00 dev 21
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:pio, hdb:pio
ide1: BM-DMA at 0xd808-0xd80f, BIOS settings: hdc:DMA, hdd:pio
hdc: HP COLORADO 8GB, ATAPI TAPE drive
ide1 at 0x170-0x177,0x376 on irq 15
ide-tape: hdc: overriding capabilities->speed (assuming 650KB/sec)
ide-tape: hdc: overriding capabilities->max_speed (assuming 650KB/sec)
ide-tape: hdc <-> ht0, 650KBps, 16*32kB buffer, 3200kB pipeline, 100ms
tDSC
I tried to reproduce the problem a few minutes ago, and there were a
number of "nr_stages should be 0" messages before the kernel bit the dust
(NULL pointer derefence I think) and lost the previous version of this
email.
Should I give up on IDE-tape and just use scsi emulation? Advice
appreciated.
doug.
ridgway@winehq.com
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