We are developing a SCSI driver for a custom FC storage controller. One
of
the requirements is that the system should not crash if fc cable is
removed.
But currently we get read_lock/write_lock continously and system becomes
unresponsive.
---
We are able to reproduce similar behaviour using Qlogic card with
qlogicfc driver
built into the kernel ( kernel 2.2.14 ) on a SMP alpha DS20 server.
if the disk is removed during the I/O ( coping data ), two scenarious
happen.
1.write_lock/read_lock stuck ( attaching dumps in isp1.log file )
2.Scheduling in interrupt and hangs ( attaching dumps in isp2.log
file)
Is it a scsi-mid layer problem or driver problem?
---
Please post a reply to [EMAIL PROTECTED] as I am not on the
mailing list.
Thanks,
Kuldeep
[EMAIL PROTECTED]
Linux version 2.2.14 (root@alpha-linux) (gcc version egcs-2.91.66 19990314/Linux
(egcs-1.1.2 release)) #11 SMP Fri Mar 17 15:46:26 EST 2000
Booting GENERIC on Tsunami variation Goldrush using machine vector DP264 from SRM
Command line: root=/dev/sda2 console=ttyS1,9600 console=tty0 bootdevice=sda2
bootfile=boot/smp14.gz
SMP: 2 CPUs probed -- cpu_present_mask = 3
Console: colour VGA+ 80x25
Calibrating delay loop... 996.15 BogoMIPS
Memory: 254888k available
Dentry hash table entries: 32768 (order 6, 512k)
Buffer cache hash table entries: 262144 (order 8, 2048k)
Page cache hash table entries: 32768 (order 5, 256k)
POSIX conformance testing by UNIFIX
SMP starting up secondaries.
recv_secondary_console_msg: on 0 message is 'P01>>>START P01>>>'
Calibrating delay loop... 994.05 BogoMIPS
SMP: Total of 2 processors activated (1990.20 BogoMIPS).
Alpha PCI BIOS32 revision 0.04
PCI: Probing PCI hardware
SMC37c669 Super I/O Controller found @ 0x3f0
Linux NET4.0 for Linux 2.2
Based upon Swansea University Computer Society NET3.039
NET4: Unix domain sockets 1.0 for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
TCP: Hash tables configured (ehash 262144 bhash 65536)
Starting kswapd v 1.5
Detected PS/2 Mouse Port.
Serial driver version 4.27 with no serial options enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
pty: 256 Unix98 ptys configured
RAM disk driver initialized: 16 RAM disks of 4096K size
loop: registered device at major 7
Floppy drive(s): fd0 is 2.88M
floppy0: no floppy controllers found
qlogicisp : new isp1020 revision ID (5)
qlogicisp : new isp1020 revision ID (5)
scsi0 : QLogic ISP1020 SCSI on PCI bus 02 device 38 irq 47 I/O base 0x100009000
scsi1 : QLogic ISP1020 SCSI on PCI bus 02 device 48 irq 39 I/O base 0x10000a000
scsi : 2 hosts.
Vendor: COMPAQ Model: BB00911CA0 Rev: 3B05
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
Vendor: DEC Model: RRD47 (C) DEC Rev: 1206
Type: CD-ROM ANSI SCSI revision: 02
Detected scsi CD-ROM sr0 at scsi1, channel 0, id 5, lun 0
scsi : detected 1 SCSI cdrom 1 SCSI disk total.
sr0: scsi3-mmc drive: 10x/32x cd/rw xa/form2 cdda tray
Uniform CDROM driver Revision: 2.56
SCSI device sda: hdwr sector= 512 bytes. Sectors= 17773524 [8678 MB] [8.7 GB]
eth0: DE500-BA at 0x8000 (PCI bus 0, device 9), h/w address 08:00:2b:c3:d1:4c,
and requires IRQ23 (provided by PCI BIOS).
de4x5.c:V0.544 1999/5/8 [EMAIL PROTECTED]
Partition check:
sda: sda1 sda2 sda3 sda4
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 96k freed
eth0: media is TP.
qlogicfc0 : new isp2x00 revision ID (4)
qlogicfc0 : link is up
scsi2 : QLogic ISP2100 SCSI on PCI bus 02 device 40 irq 43 base 0x100009800
scsi : 3 hosts.
qlogicfc0 : Port Database
wwn: 200000e08b002682 scsi_id: 0 loop_id: 0
wwn: 2100002037228121 scsi_id: 1 loop_id: 1
Vendor: SEAGATE Model: ST39102FC Rev: 0007
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sdb at scsi2, channel 0, id 1, lun 0
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 sdb6 sdb7 >
scsidisk I/O error: dev 08:11, sector 98318
scsidisk I/O error: dev 08:11, sector 98446
... <snip>
scsidisk I/O error: dev 08:11, sector 180238
scsidisk I/O error: dev 08:11, sector 180366
scsidisk I/O error: dev 08:11, sector 180494
scsi.c:1695 spinlock stuck in swapper at fffffc00004248d0(0) owner scsi_eh_2 at
fffffc000042ca9c(1) scsi_error.c:1985
scsidisk I/O error: dev 08:11, sector 180622
... <snip>
scsidisk I/O error: dev 08:11, sector 196622
scsidisk I/O error: dev 08:11, sector 442382
scsi.c:1695 spinlock grabbed in swapper at fffffc00004248d0(0) 0 ticks
Aiee, killing interrupt handler
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 8000002
write_lock stuck at fffffc000032d0dc
read_lock stuck at fffffc000032cf68
read_lock stuck at fffffc000032cf68
read_lock stuck at fffffc000032cf68
qlogicfc0 : link is down
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 75480
scsidisk I/O error: dev 08:11, sector 75482
scsidisk I/O error: dev 08:11, sector 75736
scsidisk I/O error: dev 08:11, sector 75864
... <snip>
scsidisk I/O error: dev 08:11, sector 78040
scsidisk I/O error: dev 08:11, sector 78168
ll_rw_blk.c:229 spinlock stuck in kflushd at fffffc00003e1a60(1) owner swapper at
fffffc00004248d0(0) scsi.c:1695
scsidisk I/O error: dev 08:11, sector 78296
scsidisk I/O error: dev 08:11, sector 78424
scsidisk I/O error: dev 08:11, sector 78552
... <snip>
scsidisk I/O error: dev 08:13, sector 81396
scsidisk I/O error: dev 08:13, sector 81524
scsidisk I/O error: dev 08:13, sector 81652
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 74712
scsidisk I/O error: dev 08:11, sector 74714
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 75608
scsidisk I/O error: dev 08:11, sector 75610
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 74968
scsidisk I/O error: dev 08:11, sector 74970
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 74840
scsidisk I/O error: dev 08:11, sector 74842
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 75224
scsidisk I/O error: dev 08:11, sector 75226
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 75352
scsidisk I/O error: dev 08:11, sector 75354
SCSI disk error : host 2 channel 0 id 1 lun 0 return code = 6040000
scsidisk I/O error: dev 08:11, sector 75096
scsidisk I/O error: dev 08:11, sector 75098
ll_rw_blk.c:229 spinlock grabbed in kflushd at fffffc00003e1a60(1) 0 ticks
Scheduling in interrupt
Scheduling in interrupt
Scheduling in interrupt
Scheduling in interrupt
Scheduling in interrupt
Scheduling in interrupt
Scheduling in interrupt
