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Christof Schmitt cbf1ed0264 [SCSI] zfcp: Recover from stalled outbound queue 
Depending on interruptions on some storage systems, the complete
channel can stall which looks like an outbound queue stall to Linux.
When trying to acquire a free SBAL for a non-SCSI command, zfcp waits
for 5 seconds for a free slot to appear. This is the right place to
detect a queue stall: If the wait times out, we assume a stalled queue
and try to recover this.

The overall strategy should be to trigger the erp from specific
events, and not try an overall escalation from one failed port to a
full-blown queue recovery. If we manage to send a command, the status
codes for this command or a timeout will trigger the right follow-on
actions.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-07-30 08:49:57 -05:00
..
accessibility
acpi
amba [ARM] amba: fix amba device resources 2009-07-05 22:39:08 +01:00
ata ahci: add device ID for 82801JI sata controller 2009-07-14 22:42:56 -04:00
atm
auxdisplay
base Firmware: firmware_class, fix lock imbalance 2009-07-12 13:02:10 -07:00
block headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
bluetooth headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
cdrom
char headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
clocksource
connector
cpufreq [CPUFREQ] Fix compile failure in cpufreq.c 2009-07-08 19:04:23 -04:00
cpuidle
crypto
dca
dio
dma
edac
eisa
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-07-06 14:03:44 -07:00
firmware
gpio headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
gpu drm/i915: Fix for LVDS VBT change on IGDNG 2009-07-10 14:11:06 -07:00
hid headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
hwmon hwmon: (abituguru3) DMI probing for AB9, AB9 QuadQT and IX38 QuadGT 2009-07-11 13:42:38 +02:00
i2c i2c: Use resource_size 2009-07-15 00:03:56 +01:00
ide Revert "ide: improve handling of Power Management requests" 2009-07-06 12:39:27 -07:00
idle
ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-07-06 14:03:44 -07:00
ieee802154
infiniband
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-07-08 09:32:41 -07:00
isdn headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
leds Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
lguest
macintosh
mca
md Fix congestion_wait() sync/async vs read/write confusion 2009-07-10 20:31:53 +02:00
media headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
memstick
message
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-07-08 09:32:41 -07:00
misc headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
mmc
mtd UBI: fix compilation warnings 2009-07-08 10:15:41 +03:00
net Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2009-07-14 18:37:09 -07:00
nubus
of
oprofile oprofile: reset bt_lost_no_mapping with other stats 2009-07-10 12:35:36 +02:00
parisc Remove multiple KERN_ prefixes from printk formats 2009-07-08 10:30:03 -07:00
parport
pci headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
pcmcia Remove multiple KERN_ prefixes from printk formats 2009-07-08 10:30:03 -07:00
platform Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-07-09 20:33:18 -07:00
pnp
power wm97xx_batery: replace driver_data with dev_get_drvdata() 2009-07-12 13:02:10 -07:00
pps
ps3
rapidio
regulator
rtc rtc: ds1374, fix lock imbalance 2009-07-06 13:57:03 -07:00
s390 [SCSI] zfcp: Recover from stalled outbound queue 2009-07-30 08:49:57 -05:00
sbus
scsi [SCSI] libsas: reuse the original port when hotplugging phys in wide ports 2009-07-16 12:50:44 -05:00
serial Remove multiple KERN_ prefixes from printk formats 2009-07-08 10:30:03 -07:00
sh
sn
spi spi: bitbang bugfix in message setup 2009-06-30 18:56:00 -07:00
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-07-09 20:33:18 -07:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 2009-07-13 10:24:43 -07:00
tc
telephony headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
thermal
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2009-07-13 10:23:03 -07:00
uwb
video Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-07-13 10:24:08 -07:00
virtio
vlynq vlynq: fix typo in Kconfig to enable debugging 2009-07-06 13:57:03 -07:00
w1
watchdog [WATCHDOG] w83627hf_wdt.c: add support for the W83627EHF support 2009-07-09 18:29:45 +00:00
xen xen: Use kcalloc() in xen_init_IRQ() 2009-07-01 11:19:47 +02:00
zorro
Kconfig
Makefile