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path: root/drivers/s390/scsi/zfcp_scsi.c
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* [SCSI] zfcp: Update message with input from reviewChristof Schmitt2008-10-031-1/+2
| | | | | | | | | Update the kernel messages in zfcp with input from the message review and remove some messages that have been identified as redundant. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: zfcp_fsf cleanup.Swen Schillig2008-07-121-3/+2
| | | | | | | | Code cleanup for the zfcp_fsf.c file. Signed-off-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>
* [SCSI] zfcp: consolidate sysfs things into one file.Swen Schillig2008-07-121-205/+1
| | | | | | | | | | zfcp was using three files to deal with sysfs representation for adapters, ports and units. The consolidation into one file prevents code-duplication and eases maintainability. Signed-off-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>
* [SCSI] zfcp: Cleanup of code in zfcp_scsi.cMartin Petermann2008-07-121-374/+181
| | | | | | | | | Cleanup code in zfcp_scsi.c, fix coding style issues and simplify the code. Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Move status accessors from zfcp to SCSI include file.Martin Petermann2008-07-121-23/+1
| | | | | | | | | | Move the accessor functions for the scsi_cmnd status from zfcp to the SCSI include file. Change the interface to the functions to pass the scsi_cmnd pointer instead of the status pointer. Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Add port_state attribute to sysfsSven Schuetz2008-07-121-0/+19
| | | | | | | | | | | | | | | | The sysfs attribute /sys/class/fc_host/hostX/port_state was not set by zfcp so far. Now, the appropriate members of the fc_function_template struct are set during its initialziation. The first is a boolean to show the port state. The second is a function pointer to the function zfcp_get_host_port_state, which reads the port state from our adapter status bits and calls fc_host_port_state with the approriate port state afterwards. Signed-off-by: Sven Schuetz <sven@linux.vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Message cleanupChristof Schmitt2008-07-121-55/+9
| | | | | | | | | | | Cleanup the messages used in the zfcp driver: Remove unnecessary debug and trace message and convert the remaining messages to standard kernel macros. Remove the zfcp message macros and while updating the whole flie also update the copyright headers. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: sysfs attributes for fabric and channel latenciesChristof Schmitt2008-06-051-0/+65
| | | | | | | | | | | | | | | | | | | | | The latency information is provided on a SCSI device level (LUN) which can be found at the following location  /sys/class/scsi_device/<H:C:T:L>/device/cmd_latency  /sys/class/scsi_device/<H:C:T:L>/device/read_latency  /sys/class/scsi_device/<H:C:T:L>/device/write_latency Each sysfs attribute provides the available data: min, max and sum for fabric and channel latency and the number of requests processed. An overrun of the variables is neither detected nor treated. The file has to be read twice to make a meaningful statement, because only the differences of the values between the two reads can be used. A reset of the values can be achieved by writing to the attribute. Signed-off-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>
* [SCSI] zfcp: Add some statistics provided by the FCP adapter to the sysfsSwen Schillig2008-04-271-0/+114
| | | | | | | | | | | | | | | | | | | | | | | | The new FCP adapter statistics provide a variety of information about the virtual adapter (subchannel). In order to collect this information the zfcp driver is extended to query this information. The information provided by the new FCP adapter statistics can be fetched by reading from the following files in the sysfs filesystem /sys/class/scsi_host/host<n>/seconds_active /sys/class/scsi_host/host<n>/requests /sys/class/scsi_host/host<n>/megabytes /sys/class/scsi_host/host<n>/utilization These are the statistics on a virtual adapter (subchannel) level. The information provided is raw and not modified or interpreted by any means. No interpretation or modification of the values is done by the zfcp driver. Signed-off-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>
* [SCSI] zfcp: Remove zfcp_erp_wait from slave destory handler to fix deadlockChristof Schmitt2008-04-181-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The testcase # chchp -v 0 0.da && sleep 59 && chchp -v 1 0.da results in this deadlock situation: STACK TRACE FOR TASK: 0x7e9a2048 (zfcperp0.0.c613) 0 schedule+816 [0x356b3c] 1 schedule_timeout+172 [0x357340] 2 wait_for_common+192 [0x3565fc] 3 flush_cpu_workqueue+116 [0x52af0] 4 flush_workqueue+116 [0x533b8] 5 fc_remote_port_add+64 [0x1c83ec] 6 zfcp_erp_thread+4534 [0x26585a] 7 kernel_thread_starter+6 [0x195d2] STACK TRACE FOR TASK: 0x7f8ec048 (fc_wq_0) 0 schedule+816 [0x356b3c] 1 zfcp_erp_wait+104 [0x264568] 2 zfcp_scsi_slave_destroy+64 [0x261b24] 3 __scsi_remove_device+154 [0x1c24ba] 4 scsi_remove_device+62 [0x1c2512] 5 __scsi_remove_target+198 [0x1c25ea] 6 __remove_child+58 [0x1c26d6] 7 device_for_each_child+66 [0x1ab566] 8 scsi_remove_target+98 [0x1c268a] 9 run_workqueue+200 [0x5272c] 10 worker_thread+146 [0x52882] 11 kthread+140 [0x58360] 12 kernel_thread_starter+6 [0x195d2] Remove the zfcp_erp_wait call that is not required here to prevent the deadlock situation. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: fix 31 bit compile warningsMartin Peschke2008-04-181-2/+2
| | | | | | | | | | | | | | | | | | | drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_fsf_incoming_els_rscn’: drivers/s390/scsi/zfcp_aux.c:1379: warning: cast from pointer to integer of different size drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_fsf_incoming_els_plogi’: drivers/s390/scsi/zfcp_aux.c:1432: warning: cast from pointer to integer of different size drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_fsf_incoming_els_logo’: drivers/s390/scsi/zfcp_aux.c:1457: warning: cast from pointer to integer of different size .. Just passing pointers rids us of these warnings and improves readability. Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Trace all triggers of error recovery activityMartin Peschke2008-04-071-1/+1
| | | | | | | | | This patch allows any recovery event to be traced back to an exact cause, e.g. a particular request identified by an id (address). Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Add traces for state changes.Martin Peschke2008-04-071-1/+1
| | | | | | | | | | | This patch writes a trace record which provides information about state changes for adapters, ports and units, e.g. target failure, targets becoming online, targets being temporarily blocked due to pending recovery, targets which have been recovered successfully etc. Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: convert zfcp to use target reset and device reset handlerChristof Schmitt2008-04-071-44/+20
| | | | | | | | | | | | | | | | [based on proposal from Mike Christie <michaelc@cs.wisc.edu>, this patch adds some simplifications to the handler functions] With the new target reset handler callback in the SCSI midlayer, the device reset handler in zfcp can be split in two parts. Now, zfcp does not have to track anymore whether the device supports LUN resets, so remove this flag and let the SCSI midlayer decide what to do. The device reset handler simply issues a LUN reset and the target reset handler a target reset. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Hold queue lock when checking port/unit handle for FCP commandChristof Schmitt2008-01-111-5/+3
| | | | | | | | | | | | | We need to hold the queue-lock when checking whether we still have a valid unit/port handle for the FCP command, i.e whether we can issue this request for this unit/port. If the error recovery is about to close this unit/port, then it competes for the queue-lock. If the close request issued by the error recovery wins, then it is guaranteed that this unit/port has been blocked for other requests. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Fix deadlock when adding invalid LUNChristof Schmitt2008-01-111-3/+0
| | | | | | | | | | | | | | | When adding an invalid LUN, there is a deadlock between the add via scsi_scan_target and the slave_destroy handler: The handler waits for the scan to complete, but for an invalid unit, scsi_scan_target directly calls the slave_destroy handler. Fix the deadlock by removing the wait in the slave_destroy handler, it was not necessary anyway. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Use also port and adapter to identify unit in messages.Christof Schmitt2008-01-111-2/+6
| | | | | | Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: Remove unnecessary eh_bus_reset_handler callbackChristof Schmitt2008-01-111-3/+2
| | | | | | | | | | | The callback function used by zfcp always returns success, which is an indication for the SCSI midlayer to stop error handling. Remove the bus_reset callback, since the same function will be called via the host_reset callback. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] zfcp: whitespace cleanupSwen Schillig2007-10-121-18/+18
| | | | | | | | Cleanup the whitepace from the entire zfcp driver to prevent to have those changes in future feature or function patches. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: cleanup, separation of ERP, non ERP-version for exchange_ functionsSwen Schillig2007-10-121-2/+3
| | | | | | | | | | cleanup, using ERP request mempool for all ERP versions of the exchange functions (exchange_config (ECD), exchange_port (EPD) ) providing individual versions of the ECD, EPD functions for ERP and other purposes (_sync). Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: Remove braces for only one statementChristof Schmitt2007-10-121-4/+2
| | | | | | | | Remove braces for only one statement Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: fix memory leakHeiko Carstens2007-08-151-1/+3
| | | | | | | | | fix memory leak. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: IO stall after deleting and path checker changes after ↵Michael Loehr2007-05-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | reenabling zfcp devices IO stall after deleting and path checker changes after reenabling zfcp device Setting one zfcp device offline using chccwdev in a multipath environment and waiting will lead to IO stall on all paths. After setting the zfcp device back online using chccwdev, the devices with io stall will have a different path checker. Devices corresponding to the deleted units are never freed. This has the effect that 'slave_destroy' is never called and zfcp still thinks that this unit is registered (ZFCP_STATUS_UNIT_REGISTERED is still set). Hence the erp routine is not called correctly and the unit is not enabled properly. Do not delete rport and the sdev. Just set the host to block on 'offline'. Setting host online again will then remove the blocked status and everything is fine again. Signed-off-by: Michael Loehr <mloehr2@linux.vnet.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: rework request ID management.Heiko Carstens2007-05-081-2/+2
| | | | | | | | | | Simplify request ID management and make sure that frequently used functions are inlined. Also fix a memory leak in zfcp_adapter_enqueue() which only gets hit in error handling. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: Fix deadlock between zfcp ERP and SCSIChristof Schmitt2007-05-081-0/+5
| | | | | | | | | | | | | | | | | | | | The SCSI stack requires low level drivers to register and unregister devices. For zfcp this leads to the situation where zfcp calls the SCSI stack, the SCSI tries to scan the new device and the scan SCSI command fails. This would require the zfcp erp, but the erp thread is already blocked in the register call. The fix is to make sure that the calls from the ERP thread to the SCSI stack do not block the ERP thread. In detail: 1) Use a workqueue to avoid blocking of the scsi_scan_target calls. 2) When removing a unit make sure that no scsi_scan_target call is pending. 3) Replace scsi_flush_work with scsi_target_unblock. This avoids blocking and has the same result. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [S390] Get rid of a lot of sparse warnings.Heiko Carstens2007-02-051-9/+9
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [SCSI] zfcp: initialize scsi_host_template.max_sectors with appropriate valueSwen Schillig2006-10-251-0/+1
| | | | | | | | Define ZFCP_MAX_SECTORS and initialize scsi_host_template.max_sectors with appropriate value. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] completions: lockdep annotate on stack completionsPeter Zijlstra2006-10-011-1/+1
| | | | | | | | | | | All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] zfcp: fix: avoid removal of fsf reqs before qdio queues are downAndreas Herrmann2006-09-231-17/+2
| | | | | | | | | | Fix the fix ... One of my previous fixes introduced removal of all fsf requests in zfcp's eh_host_reset_handler. But this must not happen before qdio queues are shut down. So, I revert the changes of zfcp_scsi_eh_host_reset_handler. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: introduce struct timer_list in struct zfcp_fsf_reqAndreas Herrmann2006-09-231-18/+7
| | | | | | | | This instance will be used whenever a timer is needed for a request by zfcp. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: fix: use correct req_id in eh_abort_handlerAndreas Herrmann2006-09-231-36/+27
| | | | | | | | | | | zfcp's eh_abort_handler used the wrong request ID to identify the request to be aborted. The bug was introduced with commit fea9d6c7bcd8ff1d60ff74f27ba483b3820b18a3 for improved management of request IDs. The bug is fixed with this patch. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: create private slab caches to guarantee proper data alignmentHeiko Carstens2006-09-231-3/+2
| | | | | | | | | | | | | | | | Create private slab caches in order to guarantee proper alignment of data structures that get passed to hardware. Sidenote: with this patch slab cache debugging will finally work on s390 (at least no known problems left). Furthermore this patch does some minor cleanups: - store ptr for transport template in struct zfcp_data Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Compile fix ups and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: minor erp bug fixesAndreas Herrmann2006-08-061-36/+37
| | | | | | | | | | | | | | | | | Bug fixes for zfcp's erp: - trigger adapter reopen if do_QDIO fails - avoid erp deadlock if registration of scsi target or remote port hang - do not treat as error if exchange port data fails - decrease timeout for target reset and aborts - mark unit failed if slave_destroy is called Additionally some code cleanup was done: - made some functions void when retval is not of interest - shortened initialization of zfcp's host_template - corrected some comments Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [S390] Fix sparse warnings.Heiko Carstens2006-07-121-24/+23
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [SCSI] zfcp: make use of fc_remote_port_delete when target port is unavailableAndreas Herrmann2006-05-281-0/+7
| | | | | | | | | | If zfcp's port erp fails we now call fc_remote_port_delete. This helps to avoid offlined scsi devices if scsi commands time out due to path failures. When an adapter erp fails we call fc_remote_port_delete for all ports on that adapter. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: evaluate plogi payload to set maxframe_size, supported_classes ↵Ralph Wuerthner2006-05-281-0/+1
| | | | | | | | of rports Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: (cleanup) removed superfluous macros, struct members, typedefsAndreas Herrmann2006-05-281-9/+4
| | | | | | | | Removed some macros, struct members and typedefs which were unused or not necessary. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: (cleanup) kmalloc/kzalloc replacementAndreas Herrmann2006-05-281-4/+2
| | | | | | | Replace kmalloc/memset by kzalloc or kcalloc. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: (cleanup) remove useless commentsAndreas Herrmann2006-05-281-46/+0
| | | | | | | Removed some useless comments. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: (cleanup) shortened copyright and author informationAndreas Herrmann2006-05-281-13/+3
| | | | | | | Copyright update, shortened file headers, shortened author information. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: fix device registration issuesAndreas Herrmann2006-03-091-2/+4
| | | | | | | | | | | | | | | | | | | The patch fixes following issues: (1) Replace scsi_add_device with scsi_scan_target. (Thus the rport instead of the scsi_host becomes parent of a scsi_target again.) (2) Avoid scsi_device allocation during registration of an remote port. (Would be done during fc_scsi_scan_rport.) (3) Fix queuecommand behaviour when an zfcp unit is blocked. (Call scsi_done with DID_NO_CONNECT instead of returning SCSI_MLQUEUE_DEVICE_BUSY otherwise we might end up waiting for completion in blk_execute_rq for ever.) Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: correctly set this_id for hostsAndreas Herrmann2006-03-021-1/+1
| | | | | | | | | | | | | | It fixes a bug in zfcp which provokes a race in scsi_scan.c. Finally this can lead to an Oops like: kernel BUG at fs/sysfs/symlink.c:87! Correctly set this_id for the host. Otherwise we provoke a race between scsi_target_reap_work and concurrent scsi_add_device. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: fix logging during device resetMaxim Shchetynin2006-02-121-5/+10
| | | | | | | | Avoid access to old fsf_requests if device reset is logged. Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [PATCH] s390: Remove CVS generated informationHeiko Carstens2006-02-011-2/+0
| | | | | | | | | | | | | - Remove all CVS generated information like e.g. revision IDs from drivers/s390 and include/asm-s390 (none present in arch/s390). - Add newline at end of arch/s390/lib/Makefile to avoid diff message. Acked-by: Andreas Herrmann <aherrman@de.ibm.com> Acked-by: Frank Pavlic <pavlic@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SCSI] zfcp: transport class adaptations IIAndreas Herrmann2006-01-141-0/+3
| | | | | | | | | | Replaced zfcp adapter attributes with fc_host attributes: fc_topology by port_type, physical_wwpn by permanent_port_name. Make use of fc_host attribute supported_speeds. Removed zfcp adapter attribute physical_s_id. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: transport class adaptationsAndreas Herrmann2006-01-141-54/+131
| | | | | | | | | | | Added host stats, removed superfluous get_starget_ functions, removed some attributes from zfcp specific sysfs tree (e.g. scsi_host_no, scsi_lun, wwnn and d_id). Host stats are given for the physical adapter port not for the virtual adapter. Reset stats is implemented in the device driver. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: fix return code of zfcp_scsi_slave_allocAndreas Herrmann2005-12-011-1/+1
| | | | | | | | Change return code in slave_alloc to avoid irritating error message from scsi_alloc_sdev() when scsi stack tries target scan. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: add additional fc_host attributesAndreas Herrmann2005-09-191-12/+9
| | | | | | | | | | | | this patch adds some fc host attributes and removes its equivalents from the zfcp_adapter structure and zfcp specific sysfs subtree. Furthermore it removes superfluous calls to fc_remort_port_delete when an adapter is set offline because rports will be removed by fc_remove_host anyway. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: enhancement of zfcp debug featuresMaxim Shchetynin2005-09-191-18/+31
| | | | | | | | | | | | | | | Debug features (DBFs) els_dbf, cmd_dbf and abt_dbf were removed and san_dbf, hba_dbf and scsi_dbf were introduced. The erp_dbf did not change. The new traces improve debugging of problems with zfcp, scsi-stack, multipath and hardware in the SAN. san_dbf traces things like ELS and CT commands, hba_dbf saves HBA specific information of requests, and scsi_dbf saves FCP and SCSI specific information of requests. Common to all new DBFs is that they provide a so called structured view. This significantly improves readability of the traces. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] zfcp: shorten eh_bus_reset and eh_host_reset handlersAndreas Herrmann2005-09-191-26/+14
| | | | | Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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