- 08 4月, 2008 3 次提交
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由 Martin Peschke 提交于
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: NMartin Peschke <mp3@de.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Martin Peschke 提交于
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: NMartin Peschke <mp3@de.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
[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: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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- 12 1月, 2008 4 次提交
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由 Christof Schmitt 提交于
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: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NMartin Peschke <mp3@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
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: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Christof Schmitt 提交于
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: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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- 13 10月, 2007 3 次提交
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由 Swen Schillig 提交于
Cleanup the whitepace from the entire zfcp driver to prevent to have those changes in future feature or function patches. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Swen Schillig 提交于
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: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Christof Schmitt 提交于
Remove braces for only one statement Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 16 8月, 2007 1 次提交
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由 Heiko Carstens 提交于
fix memory leak. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 16 5月, 2007 1 次提交
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由 Michael Loehr 提交于
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: NMichael Loehr <mloehr2@linux.vnet.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 09 5月, 2007 2 次提交
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由 Heiko Carstens 提交于
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: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Christof Schmitt 提交于
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: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 06 2月, 2007 1 次提交
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由 Heiko Carstens 提交于
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 26 10月, 2006 1 次提交
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由 Swen Schillig 提交于
Define ZFCP_MAX_SECTORS and initialize scsi_host_template.max_sectors with appropriate value. Signed-off-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 01 10月, 2006 1 次提交
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由 Peter Zijlstra 提交于
All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NIngo Molnar <mingo@elte.hu> Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 24 9月, 2006 4 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
This instance will be used whenever a timer is needed for a request by zfcp. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
zfcp's eh_abort_handler used the wrong request ID to identify the request to be aborted. The bug was introduced with commit fea9d6c7 for improved management of request IDs. The bug is fixed with this patch. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Heiko Carstens 提交于
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: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Compile fix ups and Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 07 8月, 2006 1 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 12 7月, 2006 1 次提交
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由 Heiko Carstens 提交于
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 29 5月, 2006 6 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Ralph Wuerthner 提交于
Signed-off-by: NRalph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
Removed some macros, struct members and typedefs which were unused or not necessary. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
Replace kmalloc/memset by kzalloc or kcalloc. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
Removed some useless comments. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
Copyright update, shortened file headers, shortened author information. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 10 3月, 2006 1 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 03 3月, 2006 1 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 13 2月, 2006 1 次提交
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由 Maxim Shchetynin 提交于
Avoid access to old fsf_requests if device reset is logged. Signed-off-by: NMaxim Shchetynin <maxim@de.ibm.com> Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 02 2月, 2006 1 次提交
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由 Heiko Carstens 提交于
- 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: NAndreas Herrmann <aherrman@de.ibm.com> Acked-by: NFrank Pavlic <pavlic@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 15 1月, 2006 2 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 02 12月, 2005 1 次提交
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由 Andreas Herrmann 提交于
Change return code in slave_alloc to avoid irritating error message from scsi_alloc_sdev() when scsi stack tries target scan. Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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- 20 9月, 2005 4 次提交
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由 Andreas Herrmann 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Maxim Shchetynin 提交于
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: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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由 Andreas Herrmann 提交于
Signed-off-by: NAndreas Herrmann <aherrman@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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