Hello, I tried again with kernel sources (releng_6) without latest MFC but with patch applied (minus the marvel_setprd-chunk). No difference, but ... something (else???) is really weird : 1) # dd if=/dev/zero of=/dev/ad6 count=2 ; sleep 1; ls -l /dev/ad6* 2+0 records in 2+0 records out 1024 bytes transferred in 0.000486 secs (2107442 bytes/sec) crw-r----- 1 root operator 0, 68 Nov 10 01:21 /dev/ad6 2) # fdisk -BI /dev/ad6; sleep 1; ls -l /dev/ad6s1* ******* Working on device /dev/ad6 ******* fdisk: invalid fdisk partition table found fdisk: Geom not found crw-r----- 1 root operator 0, 94 Nov 10 00:43 /dev/ad6s1 Note : no /dev/ad6s1c showing up ... 3) # disklabel -re /dev/ad6s1 # /dev/ad6s1: 8 partitions: # size offset fstype [fsize bsize bps/cpg] c: 976773105 63 unused 0 0 # "raw" part, don't edit d: 976773105 63 4.2BSD 0 0 0 partition c: partition extends past end of unit disklabel: partition c doesn't start at 0! disklabel: An incorrect partition c may cause problems for standard system utilities partition d: partition extends past end of unit re-edit the label? [y]: (hard to reproduce, but after several repetitions, it sometimes shows "0" for the offsets and I can write the label without complaint) 4a) I edit the label, set offset to "0" by hand, and then : # ls -l /dev/ad6* crw-r----- 1 root operator 0, 68 Nov 10 01:21 /dev/ad6 crw-r----- 1 root operator 0, 94 Nov 10 01:33 /dev/ad6s1 4b) Idem, but I reduce size of partition 'd' by "63" : # ls -l /dev/ad6* crw-r----- 1 root operator 0, 68 Nov 10 01:21 /dev/ad6 crw-r----- 1 root operator 0, 94 Nov 10 01:33 /dev/ad6s1 No way /dev/ad6s1c and /dev/ad6s1d will show up (though they do sometimes show up for a short while ... hard to repeat ) 4c) Take a beer from the fridge and change radio station : # ls -l /dev/ad6* crw-r----- 1 root operator 0, 68 Nov 10 01:44 /dev/ad6 Even /dev/ad6s1 quietly disappeared .... 5) Bon, I repeat the same things for ad12 : # fdisk -BI /dev/ad12; sleep 1; ls -l /dev/ad12s1* ******* Working on device /dev/ad12 ******* fdisk: Geom not found crw-r----- 1 root operator 0, 76 Nov 10 00:43 /dev/ad12s1 crw-r----- 1 root operator 0, 77 Nov 10 00:43 /dev/ad12s1c [root_at_charlotte ~]# disklabel -re /dev/ad12s1: 8 partitions: # size offset fstype [fsize bsize bps/cpg] a: 625142432 16 unused 0 0 c: 625142385 0 unused 0 0 # "raw" part, don't edit (Note, 'a' is not correct here, but that might be 'normal' due to my very limited 'geom'-knowledge (it does not show up in 'disklabel /dev/ad12s1' anyway)) I add a partition 'd' equal to 'c' (and remove'a'). # ls -l /dev/ad12* crw-r----- 1 root operator 0, 69 Nov 10 01:44 /dev/ad12 crw-r----- 1 root operator 0, 76 Nov 10 01:48 /dev/ad12s1 crw-r----- 1 root operator 0, 94 Nov 10 00:43 /dev/ad12s1c crw-r----- 1 root operator 0, 95 Nov 10 00:43 /dev/ad12s1d (Note, weird atimes for /dev/ad12s1c and /dev/ad12s1d ..., I just created them ... enfin) # newfs /dev/ad12s1d # mount /dev/ad12s1d /mnt # cd /mnt/ # /usr/temp/test_raid.sh 10 20 (creates 20 random files of 10M, copies them and does md5-cksum on original and copy) # /usr/temp/test_raid.sh 100 4 # /usr/temp/test_raid.sh 1000 2 # /usr/temp/test_raid.sh 4000 1 No crash, all cksum-comparisons OK ... To finish, the hardware differences between ad6 and ad12 : # atacontrol cap ad6 Protocol Serial ATA II device model WDC WD5000AAKS-00TMA0 serial number WD-WCAPW3059906 firmware revision 12.01C01 cylinders 16383 heads 16 sectors/track 63 lba supported 268435455 sectors lba48 supported 976773168 sectors dma supported overlap not supported Feature Support Enable Value Vendor write cache yes yes read ahead yes yes Native Command Queuing (NCQ) yes - 31/0x1F Tagged Command Queuing (TCQ) no no 31/0x1F SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management no no 0/0x00 automatic acoustic management yes no 254/0xFE 128/0x80 # atacontrol cap ad12 Protocol Serial ATA v1.0 device model WDC WD3200JD-22KLB0 serial number WD-WMAMR1280328 firmware revision 08.05J08 cylinders 16383 heads 16 sectors/track 63 lba supported 268435455 sectors lba48 supported 625142448 sectors dma supported overlap not supported Feature Support Enable Value Vendor write cache yes yes read ahead yes yes Native Command Queuing (NCQ) no - 0/0x00 Tagged Command Queuing (TCQ) no no 0/0x00 SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management no no 0/0x00 automatic acoustic management yes no 254/0xFE 128/0x80 and ad6 is only device at atapci0: <Promise PDC40718 SATA300 controller> and ad12 only device at atapci1: <VIA 6420 SATA150 controller> Hope I didn't do something stupidly wrong and that this might give someone a clue. NB, this test-box is not under my desk but a university in Paris. Next planned time I need to go there is thuesday. I.e. I can swap disks/cables but some patience needed Best, ArnoReceived on Sat Nov 10 2007 - 00:19:15 UTC
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