[Samba] frequent tdb corruption
Adam Thorn
alt36 at cam.ac.uk
Tue May 14 03:59:00 MDT 2013
Hi,
I'm seeing regular tdb corruption; typical log messages are:
tdb(/var/db/samba/sessionid.tdb): tdb_rec_read bad magic 0x42424242 at
offset=672032
tdb(/var/db/samba/connections.tdb): tdb_rec_read bad magic 0x0 at
offset=1111638594
tdb(/var/db/samba/locking.tdb): tdb_rec_read bad magic 0x42424242 at
offset=1034396
which then prevents fileserving from working properly (N.B. the bad
magic is not limited to those three tdbs). At the moment I'm running
Samba 3.6.6 on FreeBSD 9.0, but I've seen exactly the same behaviour
with 3.6.9 and 3.6.13, and also the same behaviour on FreeBSD 9.1 as
well. I also currently have the tdb-1.2.9,1 FreeBSD port installed at
present, but have seen the same problem with tdb-1.2.11,1
I found a few forum posts that suggested setting "use mmap=no" - I have
tried that, but saw no change in behaviour.
Restarting samba invariably clears the problem for a while: sometimes
it's just a few hours before we get further bad magic messages,
sometimes it's continued working fine for ~10 days or so, and pretty
much everything in between. There is no obvious pattern of which tdbs
are corrupting; I've seen pretty much all of them become corrupt over
the last couple of months.
The server has multiple IP addresses which samba listens on; first of
all we just start smbd with
[global]
include = /data/config/samba/servers/%i
and I've attached the result from running testparm on one of those
included files. It's very very slightly redacted to hide IP addresses
and group names. We have another similarly-configured server (FreeBSD
9.0, Samba 3.6.6) with the same pattern of "include a config file
dependent on the IP address the client connects to", and that has been
running smoothly with no problems at all for over a year.
I don't think (but have not absolutely conclusively ruled out) that it's
a hardware problem on the server itself; the samba service (and the
associated IP addresses) is managed by heartbeat, so I've tried running
samba on the two nominally identical servers in the HA cluster - I see
the same problematic behaviour on both nodes.
I've also attached the output of "smbd -b", in case that is informative.
I'm kind of running out of ideas of what to try next; any and all advice
will thus be gratefully received! It's been especially hard to diagnose
because the corruption happens seemingly at random, and I've not been
able to identify a definite action that leads to the errors. (Also,
because it's a production server, I'm not keen to try to deliberately
provoke errors..)
Adam
-------------- next part --------------
Build environment:
Built by: root at freebsd1.ch.private.cam.ac.uk
Built on: Fri May 3 14:57:49 BST 2013
Built using: cc
Build host: FreeBSD freebsd1.ch.private.cam.ac.uk 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
SRCDIR: /usr/ports/net/samba36/work/samba-3.6.6/source3
BUILDDIR: /usr/ports/net/samba36/work/samba-3.6.6/source3
Paths:
SBINDIR: /usr/local/sbin
BINDIR: /usr/local/bin
SWATDIR: /usr/local/share/swat
CONFIGFILE: /usr/local/etc/smb.conf
LOGFILEBASE: /var/log/samba
LMHOSTSFILE: /usr/local/etc/lmhosts
LIBDIR: /usr/local/lib
MODULESDIR: /usr/local/lib/samba
SHLIBEXT: so
LOCKDIR: /var/db/samba
STATEDIR: /var/db/samba
CACHEDIR: /var/db/samba
PIDDIR: /var/run/samba
SMB_PASSWD_FILE: /usr/local/etc/samba/smbpasswd
PRIVATE_DIR: /usr/local/etc/samba
NCALRPCDIR: /var/run/samba/ncalrpc
NMBDSOCKETDIR: /var/nmbd
System Headers:
HAVE_SYS_ACL_H
HAVE_SYS_CAPABILITY_H
HAVE_SYS_CDEFS_H
HAVE_SYS_EXTATTR_H
HAVE_SYS_FCNTL_H
HAVE_SYS_FILE_H
HAVE_SYS_FILIO_H
HAVE_SYS_IOCTL_H
HAVE_SYS_IPC_H
HAVE_SYS_MMAN_H
HAVE_SYS_MOUNT_H
HAVE_SYS_PARAM_H
HAVE_SYS_PRIV_H
HAVE_SYS_RESOURCE_H
HAVE_SYS_SELECT_H
HAVE_SYS_SHM_H
HAVE_SYS_SOCKET_H
HAVE_SYS_SOCKIO_H
HAVE_SYS_STATVFS_H
HAVE_SYS_STAT_H
HAVE_SYS_SYSCALL_H
HAVE_SYS_SYSCTL_H
HAVE_SYS_SYSLOG_H
HAVE_SYS_TIME_H
HAVE_SYS_TYPES_H
HAVE_SYS_UIO_H
HAVE_SYS_UNISTD_H
HAVE_SYS_UN_H
HAVE_SYS_WAIT_H
Headers:
HAVE_AIO_H
HAVE_ARPA_INET_H
HAVE_COM_ERR_H
HAVE_CTYPE_H
HAVE_DIRENT_H
HAVE_DLFCN_H
HAVE_EXECINFO_H
HAVE_FCNTL_H
HAVE_FLOAT_H
HAVE_FNMATCH_H
HAVE_FREEBSD_SUNACL_H
HAVE_GLOB_H
HAVE_GRP_H
HAVE_GSSAPI_GSSAPI_H
HAVE_GSSAPI_H
HAVE_IFADDRS_H
HAVE_KRB5_H
HAVE_LANGINFO_H
HAVE_LBER_H
HAVE_LDAP_H
HAVE_LIBINTL_H
HAVE_LIMITS_H
HAVE_LOCALE_H
HAVE_MEMORY_H
HAVE_NETDB_H
HAVE_NETINET_IN_H
HAVE_NETINET_IN_SYSTM_H
HAVE_NETINET_IP_H
HAVE_NETINET_TCP_H
HAVE_NET_IF_H
HAVE_NSSWITCH_H
HAVE_NSS_H
HAVE_POLL_H
HAVE_PTHREAD_H
HAVE_PWD_H
HAVE_READLINE_HISTORY_H
HAVE_READLINE_READLINE_H
HAVE_RPCSVC_NIS_H
HAVE_RPCSVC_YPCLNT_H
HAVE_RPCSVC_YP_PROT_H
HAVE_RPC_NETTYPE_H
HAVE_RPC_RPC_H
HAVE_SECURITY_PAM_APPL_H
HAVE_SECURITY_PAM_MODULES_H
HAVE_SETJMP_H
HAVE_STDARG_H
HAVE_STDBOOL_H
HAVE_STDINT_H
HAVE_STDIO_H
HAVE_STDLIB_H
HAVE_STRINGS_H
HAVE_STRING_H
HAVE_SYSLOG_H
HAVE_TERMIOS_H
HAVE_TIME_H
HAVE_UNISTD_H
HAVE_UTIME_H
HAVE_ZLIB_H
UTMP Options:
HAVE_UTMPX_H
HAVE_* Defines:
HAVE_ACL_GET_PERM_NP
HAVE_ADDR_TYPE_IN_KRB5_ADDRESS
HAVE_AP_OPTS_USE_SUBKEY
HAVE_ASPRINTF
HAVE_ATEXIT
HAVE_BACKTRACE_SYMBOLS
HAVE_BER_SCANF
HAVE_BER_SOCKBUF_ADD_IO
HAVE_BLKCNT_T
HAVE_BLKSIZE_T
HAVE_BOOL
HAVE_BZERO
HAVE_C99_VSNPRINTF
HAVE_CHECKSUM_IN_KRB5_CHECKSUM
HAVE_CHFLAGS
HAVE_CHMOD
HAVE_CHOWN
HAVE_CHROOT
HAVE_CLOCK_GETTIME
HAVE_CLOCK_MONOTONIC
HAVE_CLOCK_REALTIME
HAVE_COMPILER_WILL_OPTIMIZE_OUT_FNS
HAVE_CONNECT
HAVE_COPY_AUTHENTICATOR
HAVE_CRYPT
HAVE_DECL_ASPRINTF
HAVE_DECL_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE
HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER
HAVE_DECL_RL_EVENT_HOOK
HAVE_DECL_SNPRINTF
HAVE_DECL_VASPRINTF
HAVE_DECL_VSNPRINTF
HAVE_DEVICE_MAJOR_FN
HAVE_DEVICE_MINOR_FN
HAVE_DLCLOSE
HAVE_DLERROR
HAVE_DLOPEN
HAVE_DLSYM
HAVE_DPRINTF
HAVE_DUP2
HAVE_ENCTYPE_ARCFOUR_HMAC
HAVE_ENCTYPE_ARCFOUR_HMAC_MD5
HAVE_ENDNETGRENT
HAVE_ENDNETGRENT_PROTOTYPE
HAVE_ERRNO_DECL
HAVE_ETYPE_IN_ENCRYPTEDDATA
HAVE_EXECL
HAVE_EXPLICIT_LARGEFILE_SUPPORT
HAVE_EXTATTR_DELETE_FD
HAVE_EXTATTR_DELETE_FILE
HAVE_EXTATTR_DELETE_LINK
HAVE_EXTATTR_GET_FD
HAVE_EXTATTR_GET_FILE
HAVE_EXTATTR_GET_LINK
HAVE_EXTATTR_LIST_FD
HAVE_EXTATTR_LIST_FILE
HAVE_EXTATTR_LIST_LINK
HAVE_EXTATTR_SET_FD
HAVE_EXTATTR_SET_FILE
HAVE_EXTATTR_SET_LINK
HAVE_E_DATA_POINTER_IN_KRB5_ERROR
HAVE_FCHMOD
HAVE_FCHOWN
HAVE_FCNTL_LOCK
HAVE_FDOPENDIR
HAVE_FREEADDRINFO
HAVE_FREEIFADDRS
HAVE_FREE_AP_REQ
HAVE_FRSIZE
HAVE_FSEEKO
HAVE_FSID_INT
HAVE_FSYNC
HAVE_FTRUNCATE
HAVE_FTRUNCATE_EXTEND
HAVE_FUNCTION_ATTRIBUTE_DESTRUCTOR
HAVE_FUNCTION_MACRO
HAVE_FUTIMES
HAVE_GAI_STRERROR
HAVE_GETADDRINFO
HAVE_GETCWD
HAVE_GETDENTS
HAVE_GETDIRENTRIES
HAVE_GETGRENT
HAVE_GETGRENT_R
HAVE_GETGRENT_R_DECL
HAVE_GETGRGID_R
HAVE_GETGRNAM
HAVE_GETGRNAM_R
HAVE_GETGROUPLIST
HAVE_GETHOSTBYNAME
HAVE_GETIFADDRS
HAVE_GETNAMEINFO
HAVE_GETNETGRENT
HAVE_GETNETGRENT_PROTOTYPE
HAVE_GETPAGESIZE
HAVE_GETPEEREID
HAVE_GETPGRP
HAVE_GETPWENT_R
HAVE_GETPWENT_R_DECL
HAVE_GETPWNAM_R
HAVE_GETPWUID_R
HAVE_GETRLIMIT
HAVE_GETTIMEOFDAY_TZ
HAVE_GLOB
HAVE_GRANTPT
HAVE_GSSAPI
HAVE_GSS_DISPLAY_STATUS
HAVE_HISTORY_LIST
HAVE_HSTRERROR
HAVE_ICONV
HAVE_IFACE_GETIFADDRS
HAVE_IF_NAMETOINDEX
HAVE_IMMEDIATE_STRUCTURES
HAVE_INET_ATON
HAVE_INET_NTOA
HAVE_INET_NTOP
HAVE_INET_PTON
HAVE_INITGROUPS
HAVE_INITIALIZE_KRB5_ERROR_TABLE
HAVE_INNETGR
HAVE_INTPTR_T
HAVE_ISATTY
HAVE_KRB5
HAVE_KRB5_ADDRESSES
HAVE_KRB5_AUTH_CON_SETKEY
HAVE_KRB5_CRYPTO
HAVE_KRB5_CRYPTO_DESTROY
HAVE_KRB5_CRYPTO_INIT
HAVE_KRB5_C_ENCTYPE_COMPARE
HAVE_KRB5_C_VERIFY_CHECKSUM
HAVE_KRB5_DECODE_AP_REQ
HAVE_KRB5_DEPRECATED_WITH_IDENTIFIER
HAVE_KRB5_ENCTYPES_COMPATIBLE_KEYS
HAVE_KRB5_ENCTYPE_TO_STRING
HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG
HAVE_KRB5_FREE_DATA_CONTENTS
HAVE_KRB5_FREE_ERROR_CONTENTS
HAVE_KRB5_FREE_HOST_REALM
HAVE_KRB5_FWD_TGT_CREDS
HAVE_KRB5_GET_CREDS
HAVE_KRB5_GET_CREDS_OPT_ALLOC
HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE
HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES
HAVE_KRB5_GET_HOST_REALM
HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC
HAVE_KRB5_GET_INIT_CREDS_OPT_FREE
HAVE_KRB5_GET_INIT_CREDS_OPT_GET_ERROR
HAVE_KRB5_GET_INIT_CREDS_OPT_SET_PAC_REQUEST
HAVE_KRB5_GET_KDC_CRED
HAVE_KRB5_GET_PW_SALT
HAVE_KRB5_GET_RENEWED_CREDS
HAVE_KRB5_KEYBLOCK_KEYVALUE
HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK
HAVE_KRB5_KRBHST_GET_ADDRINFO
HAVE_KRB5_KRBHST_INIT
HAVE_KRB5_KT_COMPARE
HAVE_KRB5_KT_FREE_ENTRY
HAVE_KRB5_KU_OTHER_CKSUM
HAVE_KRB5_MK_REQ_EXTENDED
HAVE_KRB5_PRINCIPAL_COMPARE_ANY_REALM
HAVE_KRB5_PRINCIPAL_GET_COMP_STRING
HAVE_KRB5_PRINCIPAL_GET_REALM
HAVE_KRB5_REALM_TYPE
HAVE_KRB5_SESSION_IN_CREDS
HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES
HAVE_KRB5_SET_REAL_TIME
HAVE_KRB5_STRING_TO_KEY
HAVE_KRB5_STRING_TO_KEY_SALT
HAVE_KRB5_VERIFY_CHECKSUM
HAVE_LBER_LOG_PRINT_FN
HAVE_LCHOWN
HAVE_LDAP
HAVE_LDAP_ADD_RESULT_ENTRY
HAVE_LDAP_INIT
HAVE_LDAP_INITIALIZE
HAVE_LDAP_SASL_WRAPPING
HAVE_LDAP_SET_REBIND_PROC
HAVE_LIBASN1
HAVE_LIBCOM_ERR
HAVE_LIBGSSAPI
HAVE_LIBKRB5
HAVE_LIBLBER
HAVE_LIBLDAP
HAVE_LIBPAM
HAVE_LIBREADLINE
HAVE_LIBROKEN
HAVE_LIBZ
HAVE_LINK
HAVE_LONGLONG
HAVE_LONG_LONG
HAVE_LSTAT
HAVE_LUTIMES
HAVE_MAKEDEV
HAVE_MEMCPY
HAVE_MEMMEM
HAVE_MEMMOVE
HAVE_MEMSET
HAVE_MKDIR_MODE
HAVE_MKDTEMP
HAVE_MKNOD
HAVE_MKTIME
HAVE_MLOCK
HAVE_MLOCKALL
HAVE_MMAP
HAVE_MSGHDR_MSG_CONTROL
HAVE_MUNLOCK
HAVE_MUNLOCKALL
HAVE_NANOSLEEP
HAVE_NATIVE_ICONV
HAVE_NEW_LIBREADLINE
HAVE_NL_LANGINFO
HAVE_NO_AIO
HAVE_PAM_GET_DATA
HAVE_PAM_RHOST
HAVE_PAM_TTY
HAVE_PATHCONF
HAVE_PIPE
HAVE_POLL
HAVE_POSIX_ACLS
HAVE_POSIX_FALLOCATE
HAVE_POSIX_MEMALIGN
HAVE_PRCTL
HAVE_PREAD
HAVE_PRINTF
HAVE_PTHREAD
HAVE_PTRDIFF_T
HAVE_PWRITE
HAVE_RAND
HAVE_RANDOM
HAVE_READLINK
HAVE_REALPATH
HAVE_RENAME
HAVE_ROKEN_GETADDRINFO_HOSTSPEC
HAVE_SA_FAMILY_T
HAVE_SECURE_MKSTEMP
HAVE_SELECT
HAVE_SENDFILE
HAVE_SETBUFFER
HAVE_SETEGID
HAVE_SETENV
HAVE_SETENV_DECL
HAVE_SETEUID
HAVE_SETGROUPS
HAVE_SETLINEBUF
HAVE_SETLOCALE
HAVE_SETNETGRENT
HAVE_SETNETGRENT_PROTOTYPE
HAVE_SETPGID
HAVE_SETRESGID
HAVE_SETRESGID_DECL
HAVE_SETRESUID
HAVE_SETRESUID_DECL
HAVE_SETSID
HAVE_SHMGET
HAVE_SHM_OPEN
HAVE_SIGACTION
HAVE_SIGBLOCK
HAVE_SIGPROCMASK
HAVE_SIGSET
HAVE_SIG_ATOMIC_T_TYPE
HAVE_SNPRINTF
HAVE_SOCKADDR_SA_LEN
HAVE_SOCKETPAIR
HAVE_SOCKLEN_T
HAVE_SOCK_SIN_LEN
HAVE_SRAND
HAVE_SRANDOM
HAVE_SS_FAMILY
HAVE_STATVFS_F_FLAG
HAVE_STAT_HIRES_TIMESTAMPS
HAVE_STAT_ST_BLKSIZE
HAVE_STAT_ST_BLOCKS
HAVE_STAT_ST_FLAGS
HAVE_STRCASECMP
HAVE_STRCASESTR
HAVE_STRCHR
HAVE_STRDUP
HAVE_STRERROR
HAVE_STRERROR_R
HAVE_STRFTIME
HAVE_STRLCAT
HAVE_STRLCPY
HAVE_STRNDUP
HAVE_STRNLEN
HAVE_STRPBRK
HAVE_STRSIGNAL
HAVE_STRTOK_R
HAVE_STRTOL
HAVE_STRTOLL
HAVE_STRTOQ
HAVE_STRTOULL
HAVE_STRTOUQ
HAVE_STRUCT_ADDRINFO
HAVE_STRUCT_IFADDRS
HAVE_STRUCT_SIGEVENT
HAVE_STRUCT_SIGEVENT_SIGEV_VALUE_SIGVAL_PTR
HAVE_STRUCT_SIGEVENT_SIGEV_VALUE_SIVAL_PTR
HAVE_STRUCT_SOCKADDR
HAVE_STRUCT_SOCKADDR_IN6
HAVE_STRUCT_SOCKADDR_SA_LEN
HAVE_STRUCT_SOCKADDR_STORAGE
HAVE_STRUCT_STAT_ST_BIRTHTIME
HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
HAVE_STRUCT_STAT_ST_RDEV
HAVE_STRUCT_TIMESPEC
HAVE_ST_RDEV
HAVE_SYMLINK
HAVE_SYSCONF
HAVE_SYSCTLBYNAME
HAVE_SYSLOG
HAVE_TIMEGM
HAVE_UINTPTR_T
HAVE_UNIXSOCKET
HAVE_UNSETENV
HAVE_USLEEP
HAVE_UTIMBUF
HAVE_UTIME
HAVE_UTIMES
HAVE_VASPRINTF
HAVE_VA_COPY
HAVE_VDPRINTF
HAVE_VOLATILE
HAVE_VSNPRINTF
HAVE_VSYSLOG
HAVE_WAIT4
HAVE_WAITPID
HAVE_WRFILE_KEYTAB
HAVE_YP_GET_DEFAULT_DOMAIN
HAVE_ZLIBVERSION
HAVE__Bool
HAVE__CHDIR
HAVE__CLOSE
HAVE__DUP
HAVE__DUP2
HAVE__ET_LIST
HAVE__FCHDIR
HAVE__FCNTL
HAVE__FORK
HAVE__FSTAT
HAVE__LSTAT
HAVE__OPEN
HAVE__READ
HAVE__STAT
HAVE__VA_ARGS__MACRO
HAVE__WRITE
HAVE___GETCWD
--with Options:
WITH_ADS
WITH_PAM
WITH_PAM_MODULES
WITH_SENDFILE
WITH_WINBIND
Build Options:
BROKEN_GETGRNAM
COMPILER_SUPPORTS_LL
CONFIG_H_IS_FROM_SAMBA
DEFAULT_DISPLAY_CHARSET
DEFAULT_DOS_CHARSET
DEFAULT_UNIX_CHARSET
FREEBSD
FREEBSD_SENDFILE_API
KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT
KRB5_PRINC_REALM_RETURNS_REALM
KRB5_VERIFY_CHECKSUM_ARGS
LDAP_SET_REBIND_PROC_ARGS
LIBREPLACE_NETWORK_CHECKS
PACKAGE_BUGREPORT
PACKAGE_NAME
PACKAGE_STRING
PACKAGE_TARNAME
PACKAGE_URL
PACKAGE_VERSION
PAM_GET_DATA_ARG3_CONST_VOID_PP
REALPATH_TAKES_NULL
REPLACE_GETPASS
REPLACE_STRPTIME
RETSIGTYPE
SEEKDIR_RETURNS_VOID
SHLIBEXT
SIZEOF_CHAR
SIZEOF_INT
SIZEOF_LONG
SIZEOF_LONG_LONG
SIZEOF_OFF_T
SIZEOF_SHORT
SIZEOF_SIZE_T
SIZEOF_SSIZE_T
SIZEOF_TIME_T
STAT_STATVFS
STAT_ST_BLOCKSIZE
STDC_HEADERS
STRING_STATIC_MODULES
SYSCONF_SC_NGROUPS_MAX
SYSCONF_SC_NPROCESSORS_ONLN
SYSCONF_SC_PAGESIZE
TIME_T_MAX
TIME_WITH_SYS_TIME
USE_SETREUID
WITH_ADS
WITH_PAM
WITH_PAM_MODULES
WITH_SENDFILE
WITH_WINBIND
_GNU_SOURCE
auth_script_init
charset_CP437_init
charset_CP850_init
charset_weird_init
idmap_ad_init
idmap_adex_init
idmap_autorid_init
idmap_hash_init
idmap_rid_init
idmap_tdb2_init
loff_t
offset_t
static_decl_auth
static_decl_charset
static_decl_gpext
static_decl_idmap
static_decl_nss_info
static_decl_pdb
static_decl_perfcount
static_decl_vfs
static_init_auth
static_init_charset
static_init_gpext
static_init_idmap
static_init_nss_info
static_init_pdb
static_init_perfcount
static_init_vfs
vfs_acl_tdb_init
vfs_acl_xattr_init
vfs_audit_init
vfs_cacheprime_init
vfs_cap_init
vfs_catia_init
vfs_commit_init
vfs_crossrename_init
vfs_default_quota_init
vfs_dirsort_init
vfs_expand_msdfs_init
vfs_extd_audit_init
vfs_fake_perms_init
vfs_full_audit_init
vfs_linux_xfs_sgid_init
vfs_netatalk_init
vfs_preopen_init
vfs_readahead_init
vfs_readonly_init
vfs_recycle_init
vfs_scannedonly_init
vfs_shadow_copy2_init
vfs_shadow_copy_init
vfs_smb_traffic_analyzer_init
vfs_streams_depot_init
vfs_streams_xattr_init
vfs_syncops_init
vfs_time_audit_init
vfs_xattr_tdb_init
vfs_zfsacl_init
Type sizes:
sizeof(char): 1
sizeof(int): 4
sizeof(long): 8
sizeof(long long): 8
sizeof(uint8): 1
sizeof(uint16): 2
sizeof(uint32): 4
sizeof(short): 2
sizeof(void*): 8
sizeof(size_t): 8
sizeof(off_t): 8
sizeof(ino_t): 4
sizeof(dev_t): 4
Builtin modules:
pdb_ldap pdb_smbpasswd pdb_tdbsam pdb_wbc_sam idmap_ldap idmap_tdb idmap_passdb idmap_nss nss_info_template auth_sam auth_unix auth_winbind auth_wbc auth_server auth_domain auth_builtin vfs_default vfs_posixacl
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