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Translate OCF-error-codes in IO path

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Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
This commit is contained in:
Michal Rakowski
2019-05-28 15:20:09 +02:00
parent b63cf8268d
commit f9c0c929c1
4 changed files with 105 additions and 73 deletions
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19
casadm/extended_err_msg.c
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@@ -73,6 +73,9 @@ struct {
OCF_ERR_IO_CLASS_NOT_EXIST, OCF_ERR_IO_CLASS_NOT_EXIST,
"No such IO class ID in the cache" "No such IO class ID in the cache"
}, },
{ OCF_ERR_IO,
"I/O error"
},
{ {
OCF_ERR_WRITE_CACHE, OCF_ERR_WRITE_CACHE,
"Error while writing to cache device" "Error while writing to cache device"
@@ -113,6 +116,22 @@ struct {
OCF_ERR_NOT_OPEN_EXC, OCF_ERR_NOT_OPEN_EXC,
"Cannot open device exclusively" "Cannot open device exclusively"
}, },
{
OCF_ERR_AGAIN,
"Try again"
},
{
OCF_ERR_NOT_SUPP,
"Operation not supported"
},
{
OCF_ERR_METADATA_VER,
"Metadata version mismatch"
},
{
OCF_ERR_NO_METADATA,
"No metadata found on device"
},
/* CAS kernel error mappings*/ /* CAS kernel error mappings*/
{ {

73
modules/cas_cache/service_ui_ioctl.c
View File

@@ -4,76 +4,7 @@
*/ */
#include "cas_cache.h" #include "cas_cache.h"
#include "utils/cas_err.h"
struct {
int cas_error;
int std_error;
} static cas_error_code_map[] = {
/* IOC error mappings*/
{ OCF_ERR_INVAL, EINVAL },
{ OCF_ERR_INVAL_VOLUME_TYPE, EINVAL },
{ OCF_ERR_INTR, EINTR },
{ OCF_ERR_UNKNOWN, EINVAL },
{ OCF_ERR_TOO_MANY_CACHES, ENOSPC },
{ OCF_ERR_NO_MEM, ENOMEM },
{ OCF_ERR_NO_FREE_RAM, ENOMEM },
{ OCF_ERR_START_CACHE_FAIL, EFAULT },
{ OCF_ERR_CACHE_NOT_EXIST, ENODEV },
{ OCF_ERR_CACHE_EXIST, EEXIST },
{ OCF_ERR_TOO_MANY_CORES, ENOSPC },
{ OCF_ERR_CORE_NOT_AVAIL, ENAVAIL },
{ OCF_ERR_NOT_OPEN_EXC, EBUSY },
{ OCF_ERR_CACHE_NOT_AVAIL, ENAVAIL },
{ OCF_ERR_IO_CLASS_NOT_EXIST, ENODEV },
{ OCF_ERR_WRITE_CACHE, EIO },
{ OCF_ERR_WRITE_CORE, EIO },
{ OCF_ERR_DIRTY_SHUTDOWN, EFAULT },
{ OCF_ERR_DIRTY_EXISTS, EFAULT },
{ OCF_ERR_FLUSHING_INTERRUPTED, EINTR },
/* CAS kernel error mappings*/
{ KCAS_ERR_ROOT, EPERM },
{ KCAS_ERR_SYSTEM, EINVAL },
{ KCAS_ERR_BAD_RANGE, ERANGE },
{ KCAS_ERR_DEV_SPACE, ENOSPC },
{ KCAS_ERR_INV_IOCTL, EINVAL },
{ KCAS_ERR_DEV_PENDING, EBUSY },
{ KCAS_ERR_DIRTY_EXISTS_NVME, EFAULT },
{ KCAS_ERR_FILE_EXISTS, EEXIST },
{ KCAS_ERR_IN_UPGRADE, EFAULT },
{ KCAS_ERR_UNALIGNED, EINVAL },
{ KCAS_ERR_NO_STORED_CONF, EINTR },
{ KCAS_ERR_ROLLBACK, EFAULT },
{ KCAS_ERR_NOT_NVME, ENODEV },
{ KCAS_ERR_FORMAT_FAILED, EFAULT },
{ KCAS_ERR_NVME_BAD_FORMAT, EINVAL },
{ KCAS_ERR_CONTAINS_PART, EINVAL },
{ KCAS_ERR_A_PART, EINVAL },
{ KCAS_ERR_REMOVED_DIRTY, EIO },
{ KCAS_ERR_STOPPED_DIRTY, EIO },
};
/*******************************************/
/* Helper which change cas-specific error */
/* codes to kernel generic error codes */
/*******************************************/
int map_cas_err_to_generic_code(int cas_error_code)
{
int i;
if (cas_error_code == 0)
return 0; /* No Error */
cas_error_code = abs(cas_error_code);
for (i = 0; i < ARRAY_SIZE(cas_error_code_map); i++) {
if (cas_error_code_map[i].cas_error == cas_error_code)
return -cas_error_code_map[i].std_error;
}
return -cas_error_code;
}
#define _GET_CMD_INFO(cmd_info, arg, size) ({ \ #define _GET_CMD_INFO(cmd_info, arg, size) ({ \
cmd_info = vmalloc(size); \ cmd_info = vmalloc(size); \
@@ -97,7 +28,7 @@ int map_cas_err_to_generic_code(int cas_error_code)
ret = -EFAULT; \ ret = -EFAULT; \
} \ } \
vfree(cmd_info); \ vfree(cmd_info); \
return map_cas_err_to_generic_code(ret); \ return map_cas_err_to_generic(ret); \
}) })
/* this handles IOctl for /dev/cas */ /* this handles IOctl for /dev/cas */

81
modules/cas_cache/utils/cas_err.h Normal file
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@@ -0,0 +1,81 @@
/*
* Copyright(c) 2012-2019 Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause-Clear
*/
#include "cas_cache.h"
struct {
int cas_error;
int std_error;
} static cas_error_code_map[] = {
/* OCF error mappings*/
{ OCF_ERR_INVAL, EINVAL },
{ OCF_ERR_INVAL_VOLUME_TYPE, EINVAL },
{ OCF_ERR_INTR, EINTR },
{ OCF_ERR_UNKNOWN, EINVAL },
{ OCF_ERR_TOO_MANY_CACHES, ENOSPC },
{ OCF_ERR_NO_MEM, ENOMEM },
{ OCF_ERR_NO_FREE_RAM, ENOMEM },
{ OCF_ERR_START_CACHE_FAIL, EFAULT },
{ OCF_ERR_CACHE_NOT_EXIST, ENODEV },
{ OCF_ERR_CACHE_EXIST, EEXIST },
{ OCF_ERR_TOO_MANY_CORES, ENOSPC },
{ OCF_ERR_CORE_NOT_AVAIL, ENAVAIL },
{ OCF_ERR_NOT_OPEN_EXC, EBUSY },
{ OCF_ERR_CACHE_NOT_AVAIL, ENAVAIL },
{ OCF_ERR_IO_CLASS_NOT_EXIST, ENODEV },
{ OCF_ERR_IO, EIO },
{ OCF_ERR_WRITE_CACHE, EIO },
{ OCF_ERR_WRITE_CORE, EIO },
{ OCF_ERR_DIRTY_SHUTDOWN, EFAULT },
{ OCF_ERR_DIRTY_EXISTS, EFAULT },
{ OCF_ERR_FLUSHING_INTERRUPTED, EINTR },
{ OCF_ERR_AGAIN, EAGAIN },
{ OCF_ERR_NOT_SUPP, ENOTSUP },
{ OCF_ERR_METADATA_VER, EBADF },
{ OCF_ERR_NO_METADATA, ENODATA },
/* CAS kernel error mappings*/
{ KCAS_ERR_ROOT, EPERM },
{ KCAS_ERR_SYSTEM, EINVAL },
{ KCAS_ERR_BAD_RANGE, ERANGE },
{ KCAS_ERR_DEV_SPACE, ENOSPC },
{ KCAS_ERR_INV_IOCTL, EINVAL },
{ KCAS_ERR_DEV_PENDING, EBUSY },
{ KCAS_ERR_DIRTY_EXISTS_NVME, EFAULT },
{ KCAS_ERR_FILE_EXISTS, EEXIST },
{ KCAS_ERR_IN_UPGRADE, EFAULT },
{ KCAS_ERR_UNALIGNED, EINVAL },
{ KCAS_ERR_NO_STORED_CONF, EINTR },
{ KCAS_ERR_ROLLBACK, EFAULT },
{ KCAS_ERR_NOT_NVME, ENODEV },
{ KCAS_ERR_FORMAT_FAILED, EFAULT },
{ KCAS_ERR_NVME_BAD_FORMAT, EINVAL },
{ KCAS_ERR_CONTAINS_PART, EINVAL },
{ KCAS_ERR_A_PART, EINVAL },
{ KCAS_ERR_REMOVED_DIRTY, EIO },
{ KCAS_ERR_STOPPED_DIRTY, EIO },
};
/*******************************************/
/* Helper which change cas-specific error */
/* codes to kernel generic error codes */
/*******************************************/
static inline int map_cas_err_to_generic(int cas_error_code)
{
int i;
if (cas_error_code == 0)
return 0; /* No Error */
cas_error_code = abs(cas_error_code);
for (i = 0; i < ARRAY_SIZE(cas_error_code_map); i++) {
if (cas_error_code_map[i].cas_error == cas_error_code)
return -cas_error_code_map[i].std_error;
}
return -cas_error_code;
}

5
modules/cas_cache/volume/vol_block_dev_top.c
View File

@@ -4,6 +4,7 @@
*/ */
#include "cas_cache.h" #include "cas_cache.h"
#include "utils/cas_err.h"
#define BLK_RQ_POS(rq) (CAS_BIO_BISECTOR((rq)->bio)) #define BLK_RQ_POS(rq) (CAS_BIO_BISECTOR((rq)->bio))
#define BLK_RQ_BYTES(rq) blk_rq_bytes(rq) #define BLK_RQ_BYTES(rq) blk_rq_bytes(rq)
@@ -12,12 +13,12 @@ extern u32 use_io_scheduler;
static inline void __blockdev_end_request_all(struct request *rq, int error) static inline void __blockdev_end_request_all(struct request *rq, int error)
{ {
__blk_end_request_all(rq, error); __blk_end_request_all(rq, map_cas_err_to_generic(error));
} }
static inline void _blockdev_end_request_all(struct request *rq, int error) static inline void _blockdev_end_request_all(struct request *rq, int error)
{ {
blk_end_request_all(rq, error); blk_end_request_all(rq, map_cas_err_to_generic(error));
} }
static inline bool _blockdev_can_handle_rq(struct request *rq) static inline bool _blockdev_can_handle_rq(struct request *rq)