diff options
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c index 2ab2847..0aa36f4 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c @@ -259,6 +259,33 @@ SYSCTL_DECL(_vfs_zfs); SYSCTL_INT(_vfs_zfs, OID_AUTO, recover, CTLFLAG_RDTUN, &zfs_recover, 0, "Try to recover from otherwise-fatal errors."); +static int +sysctl_vfs_zfs_debug_flags(SYSCTL_HANDLER_ARGS) +{ + int err, val; + + val = zfs_flags; + err = sysctl_handle_int(oidp, &val, 0, req); + if (err != 0 || req->newptr == NULL) + return (err); + + /* + * ZFS_DEBUG_MODIFY must be enabled prior to boot so all + * arc buffers in the system have the necessary additional + * checksum data. However, it is safe to disable at any + * time. + */ + if (!(zfs_flags & ZFS_DEBUG_MODIFY)) + val &= ~ZFS_DEBUG_MODIFY; + zfs_flags = val; + + return (0); +} +TUNABLE_INT("vfs.zfs.debug_flags", &zfs_flags); +SYSCTL_PROC(_vfs_zfs, OID_AUTO, debug_flags, + CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, 0, sizeof(int), + sysctl_vfs_zfs_debug_flags, "IU", "Debug flags for ZFS testing."); + /* * If destroy encounters an EIO while reading metadata (e.g. indirect * blocks), space referenced by the missing metadata can not be freed. |
