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3f12bdf4c7
Add an option to tunedasd to trigger a copy pair swap using the appropriate
ioctl for DASD devices.
-s, --copy-pair-swap COPY_PAIR
This command requires a comma separated pair of primary,secondary to be
specified. In case of success the old secondary will become the new primary
device and the old primary will become a secondary device.
Example:
tunedasd /dev/dasda -s 0.0.9700,0.0.9740
This will set the old secondary device 0.0.9740 as the new primary.
The old primary device 0.0.9700 will automatically become a secondary
device.
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
38 lines
1002 B
C
38 lines
1002 B
C
/*
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* tunedasd - Adjust tunable parameters on DASD devices
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*
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* Functions to handle dasd specific operations
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*
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* Copyright IBM Corp. 2004, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef DISK_H
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#define DISK_H
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#include <linux/hdreg.h>
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#include <stdint.h>
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#include <sys/types.h>
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int check_cache (char* cache);
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int check_no_cyl (char* no_cyl);
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int check_add (char* device);
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int check_prof_item (char* prof_item);
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int disk_prof_sum (void);
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int disk_get_cache (char* device);
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int disk_set_cache (char* device, char* cache, char* no_cyl);
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int disk_reserve (char* device);
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int disk_release (char* device);
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int disk_slock (char* device);
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int disk_query_reserve_status(char* device);
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int disk_profile (char* device, char* prof_item);
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int disk_reset_prof(char *device);
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int disk_reset_chpid(char *device, char *chpid);
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int disk_copy_swap(char *device, char *copy_pair);
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#endif /* not DISK_H */
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