Dell PE1900 DAT72 drive failing FreeBSD 7

Wed Oct 29 18:12:12 UTC 2008

All,

I have a Dell PE1900 with an internal DAT72 drive.  The drive appears  
to fail midway through a dump after detecting the end of tape and  
prompting for a new one.  There is no specific sequence in which it  
fails.  Sometimes it could be after the first tape or after the second  
tape.  Dumps will complete for weeks at a time with no issue then  
suddenly fail.  There are no logs with errors except for the  
dmesg.boot file after a reboot, which fixes the issue.  Before the  
dump there are these two lines:
"ahd0: SCSI Cell parity error SSTAT3 == 0x2
ahd0: Missing case in ahd_handle_scsiint. status = 0"

I did a search and found this posting http://lists.freebsd.org/pipermail/freebsd-scsi/2007-February/002869.html 
  which suggests to upgrade the BIOS and any other firmware.  I tried  
this suggestion and updated the Dell BIOS from v2.0.1 to v2.3.1 and  
the Base Management Controller firmware from v1.69 to v2.09 however,  
the issue still occurs.  Durning this time all other services such as  
mail, samba, and nfs remain functional.  The only service affected is  
SSH.  When you try to login after the failure occurs you receive "PTY  
allocation request failed on channel 0."  Thank you in advance for the  
help.  If you need anymore information let me know.

Steve

Uname -a
FreeBSD 7.0-PRERELEASE #1: Wed Jan 23 22:52:15 EST 2008 amd64

pciconf -l | grep ahd

ahd0 at pci0:8:1:0:	class=0x010000 card=0x00409005 chip=0x80169005  
rev=0x10 hdr=0x00
ahd1 at pci0:8:1:1:	class=0x010000 card=0x00409005 chip=0x80169005  
rev=0x10 hdr=0x00

ahd0: <Adaptec 39320A Ultra320 SCSI adapter> port 0xec00-0xecff, 
0xe800-0xe8ff mem 0xfcb7e000-0xfcb7ffff irq 32 at device 1.0 on pci8
ahd0: [ITHREAD]

 >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
ahd0: Dumping Card State at program address 0x1c Mode 0x33
Card was paused
INTSTAT[0x8] SELOID[0x9] SELID[0x0] HS_MAILBOX[0x0]
INTCTL[0x80] SEQINTSTAT[0x0] SAVED_MODE[0x11] DFFSTAT[0x33]
SCSISIGI[0x18] SCSIPHASE[0x0] SCSIBUS[0x80] LASTPHASE[0x1]
SCSISEQ0[0x40] SCSISEQ1[0x12] SEQCTL0[0x0] SEQINTCTL[0x0]
SEQ_FLAGS[0xc0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
SSTAT0[0x10] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
SIMODE1[0xa4] LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0]
LQOSTAT0[0x0] LQOSTAT1[0x0] LQOSTAT2[0x0]

SCB Count = 512 CMDS_PENDING = 8 LASTSCB 0xffff CURRSCB 0x1f7 NEXTSCB  
0x0
qinstart = 16 qinfifonext = 16
QINFIFO:
WAITING_TID_QUEUES:
       9 ( 0x1f7 )
       10 ( 0x1f6 )
       11 ( 0x1f5 )
       12 ( 0x1f4 )
       13 ( 0x1f3 )
       14 ( 0x1f2 )
       15 ( 0x1f1 )
       6 ( 0x1f9 )
Pending list:
505 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0x67]
497 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0xf7]
498 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0xe7]
499 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0xd7]
500 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0xc7]
501 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0xb7]
502 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0xa7]
503 FIFO_USE[0x0] SCB_CONTROL[0x40] SCB_SCSIID[0x97]
Total 8
Kernel Free SCB lists:
  Any Device: 504 506 507 508 509 510 511 496 495 494 493 492 491 490  
489 488 487 486 485 484 483 482 481 480 479 478 477 476 475 474 473  
472 471 470 469 468 467 466 465 464 463 462 461 460 459 458 457 456  
455 454 453 452 451 450 449 448 447 446 445 444 443 442 441 440 439  
438 437 436 435 434 433 432 431 430 429 428 427 426 425 424 423 422  
421 420 419 418 417 416 415 414 413 412 411 410 409 408 407 406 405  
404 403 402 401 400 399 398 397 396 395 394 393 392 391 390 389 388  
387 386 385 384 383 382 381 380 379 378 377 376 375 374 373 372 371  
370 369 368 367 366 365 364 363 362 361 360 359 358 357 356 355 354  
353 352 351 350 349 348 347 346 345 344 343 342 341 340 339 338 337  
336 335 334 333 332 331 330 329 328 327 326 325 324 323 322 321 320  
319 318 317 316 315 314 313 312 311 310 309 308 307 306 305 304 303  
302 301 300 299 298 297 296 295 294 293 292 291 290 289 288 287 286  
285 284 283 282 281 280 279 278 277 276 275 274 273 272 271 270 269  
268 267 266 265 264 263 262 261 260 259 258 257 256 255 254 253 252  
251 250 249 248 247 246 245 244 243 242 241 240 239 238 237 236 235  
234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219 218  
217 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201  
200 199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184  
183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167  
166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150  
149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133  
132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116  
115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98  
97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75  
74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52  
51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29  
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3  
2 1 0
Sequencer Complete DMA-inprog list:
Sequencer Complete list:
Sequencer DMA-Up and Complete list:
Sequencer On QFreeze and Complete list:

ahd0: FIFO0 Free, LONGJMP == 0x80ff, SCB 0x0
SEQIMODE[0x3f] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]
SG_CACHE_SHADOW[0x2] SG_STATE[0x0] DFFSXFRCTL[0x0]
SOFFCNT[0x0] MDFFSTAT[0x5] SHADDR = 0x00, SHCNT = 0x0
HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]

ahd0: FIFO1 Free, LONGJMP == 0x8063, SCB 0x1f9
SEQIMODE[0x3f] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]
SG_CACHE_SHADOW[0x2] SG_STATE[0x0] DFFSXFRCTL[0x0]
SOFFCNT[0x0] MDFFSTAT[0x5] SHADDR = 0x00, SHCNT = 0x0
HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]
LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0  
0x0 0x0 0x0 0x0
ahd0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x42
ahd0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
ahd0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
SIMODE0[0xc]
CCSCBCTL[0x4]
ahd0: REG0 == 0x1f9, SINDEX = 0x10e, DINDEX = 0x10e
ahd0: SCBPTR == 0x1f7, SCB_NEXT == 0xffc0, SCB_NEXT2 == 0x1f6
CDB 12 0 0 0 24 0
STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>

sa0: <SEAGATE DAT    DAT72-052 A16E> Removable Sequential Access  
SCSI-3 device sa0: 80.000MB/s transfers (40.000MHz, offset 32, 16bit)