diff options
| -rw-r--r-- | fs/xfs/xfs_error.c | 154 | ||||
| -rw-r--r-- | fs/xfs/xfs_error.h | 25 | ||||
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.c | 10 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.h | 7 |
5 files changed, 111 insertions, 89 deletions
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index ed7ee4e8af73..52f75bc1abac 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -25,100 +25,106 @@ #ifdef DEBUG -int xfs_etest[XFS_NUM_INJECT_ERROR]; -int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR]; -char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR]; -int xfs_error_test_active; +static unsigned int xfs_errortag_random_default[] = { + XFS_RANDOM_DEFAULT, + XFS_RANDOM_IFLUSH_1, + XFS_RANDOM_IFLUSH_2, + XFS_RANDOM_IFLUSH_3, + XFS_RANDOM_IFLUSH_4, + XFS_RANDOM_IFLUSH_5, + XFS_RANDOM_IFLUSH_6, + XFS_RANDOM_DA_READ_BUF, + XFS_RANDOM_BTREE_CHECK_LBLOCK, + XFS_RANDOM_BTREE_CHECK_SBLOCK, + XFS_RANDOM_ALLOC_READ_AGF, + XFS_RANDOM_IALLOC_READ_AGI, + XFS_RANDOM_ITOBP_INOTOBP, + XFS_RANDOM_IUNLINK, + XFS_RANDOM_IUNLINK_REMOVE, + XFS_RANDOM_DIR_INO_VALIDATE, + XFS_RANDOM_BULKSTAT_READ_CHUNK, + XFS_RANDOM_IODONE_IOERR, + XFS_RANDOM_STRATREAD_IOERR, + XFS_RANDOM_STRATCMPL_IOERR, + XFS_RANDOM_DIOWRITE_IOERR, + XFS_RANDOM_BMAPIFORMAT, + XFS_RANDOM_FREE_EXTENT, + XFS_RANDOM_RMAP_FINISH_ONE, + XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE, + XFS_RANDOM_REFCOUNT_FINISH_ONE, + XFS_RANDOM_BMAP_FINISH_ONE, + XFS_RANDOM_AG_RESV_CRITICAL, +}; int -xfs_error_test(int error_tag, int *fsidp, char *expression, - int line, char *file, unsigned long randfactor) +xfs_errortag_init( + struct xfs_mount *mp) { - int i; - int64_t fsid; + mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX, + KM_SLEEP | KM_MAYFAIL); + if (!mp->m_errortag) + return -ENOMEM; + return 0; +} - if (prandom_u32() % randfactor) - return 0; +void +xfs_errortag_del( + struct xfs_mount *mp) +{ + kmem_free(mp->m_errortag); +} - memcpy(&fsid, fsidp, sizeof(xfs_fsid_t)); +bool +xfs_errortag_test( + struct xfs_mount *mp, + const char *expression, + const char *file, + int line, + unsigned int error_tag) +{ + unsigned int randfactor; - for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { - if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) { - xfs_warn(NULL, - "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", - expression, file, line, xfs_etest_fsname[i]); - return 1; - } - } + ASSERT(error_tag < XFS_ERRTAG_MAX); + randfactor = mp->m_errortag[error_tag]; + if (!randfactor || prandom_u32() % randfactor) + return false; - return 0; + xfs_warn_ratelimited(mp, +"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", + expression, file, line, mp->m_fsname); + return true; } int -xfs_errortag_add(unsigned int error_tag, xfs_mount_t *mp) +xfs_errortag_set( + struct xfs_mount *mp, + unsigned int error_tag, + unsigned int tag_value) { - int i; - int len; - int64_t fsid; - if (error_tag >= XFS_ERRTAG_MAX) return -EINVAL; - memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); - - for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { - if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { - xfs_warn(mp, "error tag #%d on", error_tag); - return 0; - } - } - - for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { - if (xfs_etest[i] == 0) { - xfs_warn(mp, "Turned on XFS error tag #%d", - error_tag); - xfs_etest[i] = error_tag; - xfs_etest_fsid[i] = fsid; - len = strlen(mp->m_fsname); - xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP); - strcpy(xfs_etest_fsname[i], mp->m_fsname); - xfs_error_test_active++; - return 0; - } - } - - xfs_warn(mp, "error tag overflow, too many turned on"); - - return 1; + mp->m_errortag[error_tag] = tag_value; + return 0; } int -xfs_errortag_clearall(xfs_mount_t *mp, int loud) +xfs_errortag_add( + struct xfs_mount *mp, + unsigned int error_tag) { - int64_t fsid; - int cleared = 0; - int i; - - memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); - - - for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { - if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) && - xfs_etest[i] != 0) { - cleared = 1; - xfs_warn(mp, "Clearing XFS error tag #%d", - xfs_etest[i]); - xfs_etest[i] = 0; - xfs_etest_fsid[i] = 0LL; - kmem_free(xfs_etest_fsname[i]); - xfs_etest_fsname[i] = NULL; - xfs_error_test_active--; - } - } + if (error_tag >= XFS_ERRTAG_MAX) + return -EINVAL; - if (loud || cleared) - xfs_warn(mp, "Cleared all XFS error tags for filesystem"); + return xfs_errortag_set(mp, error_tag, + xfs_errortag_random_default[error_tag]); +} +int +xfs_errortag_clearall( + struct xfs_mount *mp) +{ + memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX); return 0; } #endif /* DEBUG */ diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 05f8666733a0..b4316d39e1ca 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -131,21 +131,24 @@ extern void xfs_verifier_error(struct xfs_buf *bp); #define XFS_RANDOM_AG_RESV_CRITICAL 4 #ifdef DEBUG -extern int xfs_error_test_active; -extern int xfs_error_test(int, int *, char *, int, char *, unsigned long); - -#define XFS_NUM_INJECT_ERROR 10 +extern int xfs_errortag_init(struct xfs_mount *mp); +extern void xfs_errortag_del(struct xfs_mount *mp); +extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression, + const char *file, int line, unsigned int error_tag); #define XFS_TEST_ERROR(expr, mp, tag, rf) \ - ((expr) || (xfs_error_test_active && \ - xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \ - (rf)))) + ((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag))) -extern int xfs_errortag_add(unsigned int error_tag, struct xfs_mount *mp); -extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud); +extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag, + unsigned int tag_value); +extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag); +extern int xfs_errortag_clearall(struct xfs_mount *mp); #else +#define xfs_errortag_init(mp) (0) +#define xfs_errortag_del(mp) #define XFS_TEST_ERROR(expr, mp, tag, rf) (expr) -#define xfs_errortag_add(tag, mp) (ENOSYS) -#define xfs_errortag_clearall(mp, loud) (ENOSYS) +#define xfs_errortag_set(mp, tag, val) (ENOSYS) +#define xfs_errortag_add(mp, tag) (ENOSYS) +#define xfs_errortag_clearall(mp) (ENOSYS) #endif /* DEBUG */ /* diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 8ffe4eac0b48..9c0c7a920304 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -2037,14 +2037,14 @@ xfs_file_ioctl( if (copy_from_user(&in, arg, sizeof(in))) return -EFAULT; - return xfs_errortag_add(in.errtag, mp); + return xfs_errortag_add(mp, in.errtag); } case XFS_IOC_ERROR_CLEARALL: if (!capable(CAP_SYS_ADMIN)) return -EPERM; - return xfs_errortag_clearall(mp, 1); + return xfs_errortag_clearall(mp); case XFS_IOC_FREE_EOFBLOCKS: { struct xfs_fs_eofblocks eofb; diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index cc6789d35232..1a98c35e1ccf 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -720,10 +720,13 @@ xfs_mountfs( if (error) goto out_del_stats; + error = xfs_errortag_init(mp); + if (error) + goto out_remove_error_sysfs; error = xfs_uuid_mount(mp); if (error) - goto out_remove_error_sysfs; + goto out_remove_errortag; /* * Set the minimum read and write sizes @@ -1042,6 +1045,8 @@ xfs_mountfs( xfs_da_unmount(mp); out_remove_uuid: xfs_uuid_unmount(mp); + out_remove_errortag: + xfs_errortag_del(mp); out_remove_error_sysfs: xfs_error_sysfs_del(mp); out_del_stats: @@ -1145,10 +1150,11 @@ xfs_unmountfs( xfs_uuid_unmount(mp); #if defined(DEBUG) - xfs_errortag_clearall(mp, 0); + xfs_errortag_clearall(mp); #endif xfs_free_perag(mp); + xfs_errortag_del(mp); xfs_error_sysfs_del(mp); xfs_sysfs_del(&mp->m_stats.xs_kobj); xfs_sysfs_del(&mp->m_kobj); diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 305d95394e2d..e002ac52a4e6 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -199,6 +199,13 @@ typedef struct xfs_mount { bool m_fail_unmount; #ifdef DEBUG /* + * Frequency with which errors are injected. Replaces xfs_etest; the + * value stored in here is the inverse of the frequency with which the + * error triggers. 1 = always, 2 = half the time, etc. + */ + unsigned int *m_errortag; + + /* * DEBUG mode instrumentation to test and/or trigger delayed allocation * block killing in the event of failed writes. When enabled, all * buffered writes are silenty dropped and handled as if they failed. |