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 kuldeep@procsys.com as I am not on the mailing list. Thanks, Kuldeep kuldeep@procsys.com
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 davies@maniac.ultranet.com 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
This archive was generated by hypermail 2b29 : Thu Mar 23 2000 - 21:00:42 EST