Hello,
When I try to copy a large (7GB+) file from one filesystem to another the
copy is not equal to te source file. This behaviour can be reproduced
repeatedly.
Details:
- FreeBSD 6-STABLE, cvsupped yesterday
- Intel L440GX+ main board, dual 700 MHz Pentium 3, 1 GB RAM
- 2x Promise TX3 IDE controllers
- 4x Hitachi HDS725050KLAT80 harddisks (500GB each)
These disks are mirrored using gvinum as two 500GB volumes:
drive disk0 device /dev/ad4s1e
drive disk1 device /dev/ad6s1e
drive disk2 device /dev/ad8s1e
drive disk3 device /dev/ad10s1e
volume vol0
plex org concat
sd length 0 drive disk0
plex org concat
sd length 0 drive disk2
volume vol1
plex org concat
sd length 0 drive disk1
plex org concat
sd length 0 drive disk3
Other filesystems are on SCSI disks.
# sum /data/vol1/some_7GB_file
19249 6990148 /data/vol1/some_7GB_file
# cp -p /data/vol1/some_7GB_file /data/vol0/tmp.1
# sum /data/vol0/tmp.1
54291 6990148 /data/vol0/tmp.1
# cp -p /data/vol1/some_7GB_file /data/vol0/tmp.2
# sum /data/vol0/tmp.2
46435 6990148 /data/vol0/tmp.2
# cp -p /data/vol1/some_7GB_file /data/vol0/tmp.3
# sum /data/vol0/tmp.3
53090 6990148 /data/vol0/tmp.3
# cp -p /data/vol1/some_7GB_file /data/vol0/tmp.4
# sum /data/vol0/tmp.4
63059 6990148 /data/vol0/tmp.4
# cp -p /data/vol1/some_7GB_file /data/vol2/tmp.5
# sum /data/vol2/tmp.5
44188 6990148 /data/vol2/tmp.5
No errors in dmesg.
Checksums are the same when repeating the sum command later so the
problem occurs during copy, not during read-back.
When I first copy the file from /data/vol1 to a filesystem on a pair of
SCSI disks and then to /data/vol2 from the SCSI disks I get a correct
copy.
Relevant dmesg output:
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pcib2: <PCI-PCI bridge> at device 15.0 on pci1
pci2: <PCI bus> on pcib2
atapci0: <Promise PDC20269 UDMA133 controller> port
0x3030-0x3037,0x3024-0x3027,0x3028-0x302f,0x3020-0x3023,0x3000-0x300f mem
0xf4200000-0xf4203fff irq 20 at device 4.0 on pci2
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
atapci1: <Promise PDC20269 UDMA133 controller> port
0x3048-0x304f,0x303c-0x303f,0x3040-0x3047,0x3038-0x303b,0x3010-0x301f mem
0xf4204000-0xf4207fff irq 23 at device 7.0 on pci2
ata4: <ATA channel 0> on atapci1
ata5: <ATA channel 1> on atapci1
ad4: 476940MB <HDS725050KLAT80 K2AOA10C> at ata2-master UDMA133
ad6: 476940MB <HDS725050KLAT80 K2AOA10C> at ata3-master UDMA133
ad8: 476940MB <HDS725050KLAT80 K2AOA10C> at ata4-master UDMA133
ad10: 476940MB <HDS725050KLAT80 K2AOA10C> at ata5-master UDMA133
Hope someone can shed a light on this.
Regards,
Paul Schenkeveld
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