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Most of the error conditions reported by a FICON storage server indicate situations which can be recovered. Sometimes the host just needs to retry an I/O request, but sometimes the recovery is more complex and requires the device driver to wait, choose a different path, etc. The DASD device driver has a fully featured error recovery for normal block layer I/O, but not for internal I/O request which are for example used during the device bring up. This can lead to situations where the IPL of a system fails because DASD devices are not properly recognized. This patch will extend the internal I/O handling to use the existing error recovery procedures. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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| .. | ||
| dasd_3990_erp.c | ||
| dasd_alias.c | ||
| dasd_devmap.c | ||
| dasd_diag.c | ||
| dasd_diag.h | ||
| dasd_eckd.c | ||
| dasd_eckd.h | ||
| dasd_eer.c | ||
| dasd_erp.c | ||
| dasd_fba.c | ||
| dasd_fba.h | ||
| dasd_genhd.c | ||
| dasd_int.h | ||
| dasd_ioctl.c | ||
| dasd_proc.c | ||
| dasd.c | ||
| dcssblk.c | ||
| Kconfig | ||
| Makefile | ||
| xpram.c | ||