Wendy Cheng <wcheng@xxxxxxxxxx> writes:
> Bob Peterson wrote:
>
>>> # gfs_tool jindex /dev/mapper/gfs-test gfs_tool:
>>> /dev/mapper/gfs-test is not a GFS file/filesystem
>>
>> It sounds like gfs_tool may be somewhat confused about the mount
>> point. Try using the mount point that was used on the mount
>> command, not the /dev/mapper mount point and see if that helps.
>
> If I remember this right, gfs_tool only recognizes *filesystem* mount
> point, not device file (/dev/mapper/..something... is a device file,
> not a mount point). So you may mount the GFS filesystem as:
>
> shell> mount /dev/mapper/something /gfs-data
> shell> gfs_tool <flag> /gfs-data <op>
Yes, I've already figured gfs_tool can handle mounted filesystems
only. I've also figured it's clearly written in the manual, which I
didn't check even after reading the error message. Maybe my
terminology is wrong, but I'd say /dev/mapper/gfs-test IS a GFS
filesystem, but not the mount point of one. Well, of anything.
Perhaps a better error message would be
"/dev/mapper/gfs-test is not a mount point"
or maybe
"/dev/mapper/gfs-test in not on a GFS filesystem"
(for Bob, speaking of better error messages. :)
----
As a side note, there's still something strange here (at least for me,
not knowing the LVM on-disk format), which is probably unrelated to my
mount problem, as it's (obviously, living on SAN) the same on the
working node.
# pvs
PV VG Fmt Attr PSize PFree
/dev/mapper/360060160861611005c574c2126c7db11 gfs lvm2 a- 200.00G 155.00G
# lvs
LV VG Attr LSize Origin Snap% Move Log Copy%
test gfs -wi-a- 40.00G
# dmsetup table gfs-test
0 83886080 linear 254:3 384
That is, the test LV starts at sector number 384. However, dumping
the start of the PV gives the output below, which has a gfs signatures
at sector 9, 11, 13, 16 and 18, then lots of zeroes, and finally the
file system name in sector 512. It other words, the first 128 sectors
of the LV are pure zeros. I don't mind that the least, but what are
thos gfs strings at the start of the PV? Maybe some stray data from
previous mkfs attempts?
# dd if=/dev/mapper/360060160861611005c574c2126c7db11 bs=512 count=513 2>/dev/null | od -Ad -c
0000000 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0000512 L A B E L O N E 001 \0 \0 \0 \0 \0 \0 \0
0000528 223 3 025 220 \0 \0 \0 L V M 2 0 0 1
0000544 l O d B 3 C u T w M H s 3 f x N
0000560 9 J U o L y R n C J v E Q l D G
0000576 \0 \0 375 377 1 \0 \0 \0 \0 \0 003 \0 \0 \0 \0 \0
0000592 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
0000608 \0 \0 \0 \0 \0 \0 \0 \0 \0 020 \0 \0 \0 \0 \0 \0
0000624 \0 360 002 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
0000640 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0004096 \b 353 330 235 L V M 2 x [ 5 A % r
0004112 0 N * > 001 \0 \0 \0 \0 020 \0 \0 \0 \0 \0 \0
0004128 \0 360 002 \0 \0 \0 \0 \0 \0 024 \0 \0 \0 \0 \0 \0
0004144 ( 004 \0 \0 \0 \0 \0 \0 255 365 W 035 \0 \0 \0 \0
0004160 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0004608 g f s { \n i d = " F 3 7 z
0004624 e 3 - g q r 1 - G 3 6 H - s f P
0004640 A - W c A W - m U i B - 0 4 O G
0004656 k V " \n s e q n o = 2 \n s t
0004672 a t u s = [ " R E S I Z E A
0004688 B L E " , " R E A D " , " W
0004704 R I T E " , " C L U S T E R E
0004720 D " ] \n e x t e n t _ s i z e
0004736 = 8 1 9 2 \n m a x _ l v =
0004752 0 \n m a x _ p v = 0 \n \n p h
0004768 y s i c a l _ v o l u m e s {
0004784 \n \n p v 0 { \n i d = " l O
0004800 d B 3 C - u T w M - H s 3 f - x
0004816 N 9 J - U o L y - R n C J - v E
0004832 Q l D G " \n d e v i c e = "
0004848 / d e v / d m - 3 " \n \n s t a t
0004864 u s = [ " A L L O C A T A B
0004880 L E " ] \n p e _ s t a r t =
0004896 3 8 4 \n p e _ c o u n t = 5
0004912 1 1 9 9 \n } \n } \n \n } \n # G e
0004928 n e r a t e d b y L V M 2 :
0004944 F r i M a r 2 0 3 : 2
0004960 3 : 4 6 2 0 0 7 \n \n c o n t e
0004976 n t s = " T e x t F o r m
0004992 a t V o l u m e G r o u p "
0005008 \n v e r s i o n = 1 \n \n d e
0005024 s c r i p t i o n = " " \n \n
0005040 c r e a t i o n _ h o s t =
0005056 " r s 2 1 . l v s . i i f . h u
0005072 " \t # L i n u x r s 2 1 . l
0005088 v s . i i f . h u 2 . 6 . 1 8
0005104 - 4 - 6 8 6 # 1 S M P W e
0005120 d F e b 2 1 1 6 : 0 6 : 5
0005136 4 U T C 2 0 0 7 i 6 8 6 \n
0005152 c r e a t i o n _ t i m e =
0005168 1 1 7 2 8 0 2 2 2 6 \t # F r i
0005184 M a r 2 0 3 : 2 3 : 4 6
0005200 2 0 0 7 \n \n \0 \0 \0 \0 \0 \0 \0 \0 \0
0005216 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0005632 g f s { \n i d = " F 3 7 z
0005648 e 3 - g q r 1 - G 3 6 H - s f P
0005664 A - W c A W - m U i B - 0 4 O G
0005680 k V " \n s e q n o = 3 \n s t
0005696 a t u s = [ " R E S I Z E A
0005712 B L E " , " R E A D " , " W
0005728 R I T E " , " C L U S T E R E
0005744 D " ] \n e x t e n t _ s i z e
0005760 = 8 1 9 2 \n m a x _ l v =
0005776 0 \n m a x _ p v = 0 \n \n p h
0005792 y s i c a l _ v o l u m e s {
0005808 \n \n p v 0 { \n i d = " l O
0005824 d B 3 C - u T w M - H s 3 f - x
0005840 N 9 J - U o L y - R n C J - v E
0005856 Q l D G " \n d e v i c e = "
0005872 / d e v / d m - 3 " \n \n s t a t
0005888 u s = [ " A L L O C A T A B
0005904 L E " ] \n p e _ s t a r t =
0005920 3 8 4 \n p e _ c o u n t = 5
0005936 1 1 9 9 \n } \n } \n \n l o g i c a
0005952 l _ v o l u m e s { \n \n t e s
0005968 t { \n i d = " p Q C B 2 M
0005984 - J 1 6 3 - f 1 o b - J s r I -
0006000 l q I V - 2 i j Q - 4 j b m R o
0006016 " \n s t a t u s = [ " R E A
0006032 D " , " W R I T E " , " V I
0006048 S I B L E " ] \n s e g m e n t _
0006064 c o u n t = 1 \n \n s e g m e
0006080 n t 1 { \n s t a r t _ e x t e
0006096 n t = 0 \n e x t e n t _ c o
0006112 u n t = 1 0 2 4 0 \n \n t y p
0006128 e = " s t r i p e d " \n s t
0006144 r i p e _ c o u n t = 1 \t #
0006160 l i n e a r \n \n s t r i p e s
0006176 = [ \n " p v 0 " , 0 \n ] \n
0006192 } \n } \n } \n } \n # G e n e r a
0006208 t e d b y L V M 2 : F r i
0006224 M a r 2 0 3 : 2 6 : 0 4
0006240 2 0 0 7 \n \n c o n t e n t s
0006256 = " T e x t F o r m a t V
0006272 o l u m e G r o u p " \n v e r
0006288 s i o n = 1 \n \n d e s c r i
0006304 p t i o n = " " \n \n c r e a
0006320 t i o n _ h o s t = " r s 2
0006336 1 . l v s . i i f . h u " \t #
0006352 L i n u x r s 2 1 . l v s . i
0006368 i f . h u 2 . 6 . 1 8 - 4 - 6
0006384 8 6 # 1 S M P W e d F e
0006400 b 2 1 1 6 : 0 6 : 5 4 U T
0006416 C 2 0 0 7 i 6 8 6 \n c r e a
0006432 t i o n _ t i m e = 1 1 7 2
0006448 8 0 2 3 6 4 \t # F r i M a r
0006464 2 0 3 : 2 6 : 0 4 2 0 0
0006480 7 \n \n \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
0006496 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0006656 g f s { \n i d = " F 3 7 z
0006672 e 3 - g q r 1 - G 3 6 H - s f P
0006688 A - W c A W - m U i B - 0 4 O G
0006704 k V " \n s e q n o = 4 \n s t
0006720 a t u s = [ " R E S I Z E A
0006736 B L E " , " R E A D " , " W
0006752 R I T E " , " C L U S T E R E
0006768 D " ] \n e x t e n t _ s i z e
0006784 = 8 1 9 2 \n m a x _ l v =
0006800 0 \n m a x _ p v = 0 \n \n p h
0006816 y s i c a l _ v o l u m e s {
0006832 \n \n p v 0 { \n i d = " l O
0006848 d B 3 C - u T w M - H s 3 f - x
0006864 N 9 J - U o L y - R n C J - v E
0006880 Q l D G " \n d e v i c e = "
0006896 / d e v / d m - 2 " \n \n s t a t
0006912 u s = [ " A L L O C A T A B
0006928 L E " ] \n p e _ s t a r t =
0006944 3 8 4 \n p e _ c o u n t = 5
0006960 1 1 9 9 \n } \n } \n \n l o g i c a
0006976 l _ v o l u m e s { \n \n t e s
0006992 t { \n i d = " p Q C B 2 M
0007008 - J 1 6 3 - f 1 o b - J s r I -
0007024 l q I V - 2 i j Q - 4 j b m R o
0007040 " \n s t a t u s = [ " R E A
0007056 D " , " W R I T E " , " V I
0007072 S I B L E " ] \n s e g m e n t _
0007088 c o u n t = 1 \n \n s e g m e
0007104 n t 1 { \n s t a r t _ e x t e
0007120 n t = 0 \n e x t e n t _ c o
0007136 u n t = 1 0 2 4 0 \n \n t y p
0007152 e = " s t r i p e d " \n s t
0007168 r i p e _ c o u n t = 1 \t #
0007184 l i n e a r \n \n s t r i p e s
0007200 = [ \n " p v 0 " , 0 \n ] \n
0007216 } \n } \n \n t 2 { \n i d = "
0007232 r j r 4 9 d - t E T G - j f O I
0007248 - Q F G u - L q H j - z p r d -
0007264 9 9 q K 7 E " \n s t a t u s =
0007280 [ " R E A D " , " W R I T E
0007296 " , " V I S I B L E " ] \n s e
0007312 g m e n t _ c o u n t = 1 \n
0007328 \n s e g m e n t 1 { \n s t a r
0007344 t _ e x t e n t = 0 \n e x t
0007360 e n t _ c o u n t = 2 5 6 \n
0007376 \n t y p e = " s t r i p e d
0007392 " \n s t r i p e _ c o u n t =
0007408 1 \t # l i n e a r \n \n s t r
0007424 i p e s = [ \n " p v 0 " ,
0007440 1 0 2 4 0 \n ] \n } \n } \n } \n } \n
0007456 # G e n e r a t e d b y L
0007472 V M 2 : T u e M a r 6
0007488 0 1 : 3 8 : 2 1 2 0 0 7 \n \n c
0007504 o n t e n t s = " T e x t
0007520 F o r m a t V o l u m e G r
0007536 o u p " \n v e r s i o n = 1
0007552 \n \n d e s c r i p t i o n =
0007568 " " \n \n c r e a t i o n _ h o s
0007584 t = " r s 2 2 " \t # L i n
0007600 u x r s 2 2 2 . 6 . 1 8 - 4
0007616 - 6 8 6 # 1 S M P W e d
0007632 F e b 2 1 1 6 : 0 6 : 5 4
0007648 U T C 2 0 0 7 i 6 8 6 \n c r
0007664 e a t i o n _ t i m e = 1 1
0007680 7 3 1 4 1 5 0 1 \t # T u e M
0007696 a r 6 0 1 : 3 8 : 2 1 2
0007712 0 0 7 \n \n \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
0007728 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0008192 g f s { \n i d = " F 3 7 z
0008208 e 3 - g q r 1 - G 3 6 H - s f P
0008224 A - W c A W - m U i B - 0 4 O G
0008240 k V " \n s e q n o = 5 \n s t
0008256 a t u s = [ " R E S I Z E A
0008272 B L E " , " R E A D " , " W
0008288 R I T E " , " C L U S T E R E
0008304 D " ] \n e x t e n t _ s i z e
0008320 = 8 1 9 2 \n m a x _ l v =
0008336 0 \n m a x _ p v = 0 \n \n p h
0008352 y s i c a l _ v o l u m e s {
0008368 \n \n p v 0 { \n i d = " l O
0008384 d B 3 C - u T w M - H s 3 f - x
0008400 N 9 J - U o L y - R n C J - v E
0008416 Q l D G " \n d e v i c e = "
0008432 / d e v / d m - 2 " \n \n s t a t
0008448 u s = [ " A L L O C A T A B
0008464 L E " ] \n p e _ s t a r t =
0008480 3 8 4 \n p e _ c o u n t = 5
0008496 1 1 9 9 \n } \n } \n \n l o g i c a
0008512 l _ v o l u m e s { \n \n t e s
0008528 t { \n i d = " p Q C B 2 M
0008544 - J 1 6 3 - f 1 o b - J s r I -
0008560 l q I V - 2 i j Q - 4 j b m R o
0008576 " \n s t a t u s = [ " R E A
0008592 D " , " W R I T E " , " V I
0008608 S I B L E " ] \n s e g m e n t _
0008624 c o u n t = 1 \n \n s e g m e
0008640 n t 1 { \n s t a r t _ e x t e
0008656 n t = 0 \n e x t e n t _ c o
0008672 u n t = 1 0 2 4 0 \n \n t y p
0008688 e = " s t r i p e d " \n s t
0008704 r i p e _ c o u n t = 1 \t #
0008720 l i n e a r \n \n s t r i p e s
0008736 = [ \n " p v 0 " , 0 \n ] \n
0008752 } \n } \n } \n } \n # G e n e r a
0008768 t e d b y L V M 2 : T u e
0008784 M a r 6 0 1 : 3 8 : 5 5
0008800 2 0 0 7 \n \n c o n t e n t s
0008816 = " T e x t F o r m a t V
0008832 o l u m e G r o u p " \n v e r
0008848 s i o n = 1 \n \n d e s c r i
0008864 p t i o n = " " \n \n c r e a
0008880 t i o n _ h o s t = " r s 2
0008896 1 " \t # L i n u x r s 2 1
0008912 2 . 6 . 1 8 - 4 - 6 8 6 # 1
0008928 S M P W e d F e b 2 1 1
0008944 6 : 0 6 : 5 4 U T C 2 0 0 7
0008960 i 6 8 6 \n c r e a t i o n _ t
0008976 i m e = 1 1 7 3 1 4 1 5 3 5
0008992 \t # T u e M a r 6 0 1
0009008 : 3 8 : 5 5 2 0 0 7 \n \n \0 \0 \0
0009024 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0009216 g f s { \n i d = " F 3 7 z
0009232 e 3 - g q r 1 - G 3 6 H - s f P
0009248 A - W c A W - m U i B - 0 4 O G
0009264 k V " \n s e q n o = 6 \n s t
0009280 a t u s = [ " R E S I Z E A
0009296 B L E " , " R E A D " , " W
0009312 R I T E " , " C L U S T E R E
0009328 D " ] \n e x t e n t _ s i z e
0009344 = 8 1 9 2 \n m a x _ l v =
0009360 0 \n m a x _ p v = 0 \n \n p h
0009376 y s i c a l _ v o l u m e s {
0009392 \n \n p v 0 { \n i d = " l O
0009408 d B 3 C - u T w M - H s 3 f - x
0009424 N 9 J - U o L y - R n C J - v E
0009440 Q l D G " \n d e v i c e = "
0009456 / d e v / d m - 2 " \n \n s t a t
0009472 u s = [ " A L L O C A T A B
0009488 L E " ] \n p e _ s t a r t =
0009504 3 8 4 \n p e _ c o u n t = 5
0009520 1 1 9 9 \n } \n } \n \n l o g i c a
0009536 l _ v o l u m e s { \n \n t e s
0009552 t { \n i d = " p Q C B 2 M
0009568 - J 1 6 3 - f 1 o b - J s r I -
0009584 l q I V - 2 i j Q - 4 j b m R o
0009600 " \n s t a t u s = [ " R E A
0009616 D " , " W R I T E " , " V I
0009632 S I B L E " ] \n s e g m e n t _
0009648 c o u n t = 1 \n \n s e g m e
0009664 n t 1 { \n s t a r t _ e x t e
0009680 n t = 0 \n e x t e n t _ c o
0009696 u n t = 1 0 2 4 0 \n \n t y p
0009712 e = " s t r i p e d " \n s t
0009728 r i p e _ c o u n t = 1 \t #
0009744 l i n e a r \n \n s t r i p e s
0009760 = [ \n " p v 0 " , 0 \n ] \n
0009776 } \n } \n \n x f s { \n i d =
0009792 " i h 2 d I 7 - f 7 E B - g k c
0009808 z - C K F V - 0 O H p - 9 B S Z
0009824 - 1 A M 6 f u " \n s t a t u s
0009840 = [ " R E A D " , " W R I T
0009856 E " , " V I S I B L E " ] \n s
0009872 e g m e n t _ c o u n t = 1
0009888 \n \n s e g m e n t 1 { \n s t a
0009904 r t _ e x t e n t = 0 \n e x
0009920 t e n t _ c o u n t = 1 2 8
0009936 0 \n \n t y p e = " s t r i p
0009952 e d " \n s t r i p e _ c o u n t
0009968 = 1 \t # l i n e a r \n \n s
0009984 t r i p e s = [ \n " p v 0 "
0010000 , 1 0 2 4 0 \n ] \n } \n } \n } \n
0010016 } \n # G e n e r a t e d b y
0010032 L V M 2 : T h u M a r 2
0010048 2 1 6 : 3 2 : 1 6 2 0 0 7 \n
0010064 \n c o n t e n t s = " T e x
0010080 t F o r m a t V o l u m e
0010096 G r o u p " \n v e r s i o n =
0010112 1 \n \n d e s c r i p t i o n
0010128 = " " \n \n c r e a t i o n _ h
0010144 o s t = " r s 2 1 " \t # L
0010160 i n u x r s 2 1 2 . 6 . 1 8
0010176 - 4 - 6 8 6 # 1 S M P W e
0010192 d F e b 2 1 1 6 : 0 6 : 5
0010208 4 U T C 2 0 0 7 i 6 8 6 \n
0010224 c r e a t i o n _ t i m e =
0010240 1 1 7 4 5 7 7 5 3 6 \t # T h u
0010256 M a r 2 2 1 6 : 3 2 : 1 6
0010272 2 0 0 7 \n \n \0 \0 \0 \0 \0 \0 \0 \0 \0
0010288 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0262144 001 026 031 p \0 \0 \0 001 \0 \0 \0 \0 \0 \0 \0 \0
0262160 \0 \0 \0 d \0 \0 \0 \0 \0 \0 005 035 \0 \0 005 y
0262176 \0 \0 \0 \0 \0 \0 020 \0 \0 \0 \0 \f \0 \0 \0 020
0262192 \0 \0 \0 \0 \0 \0 \0 026 \0 \0 \0 \0 \0 \0 \0 026
0262208 \0 \0 \0 \0 \0 \0 \0 027 \0 \0 \0 \0 \0 \0 \0 027
0262224 \0 \0 \0 \0 \0 \0 \0 032 \0 \0 \0 \0 \0 \0 \0 032
0262240 l o c k _ d l m \0 \0 \0 \0 \0 \0 \0 \0
0262256 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0262304 p i l o t : t e s t \0 \0 \0 \0 \0 \0
0262320 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0262368 \0 \0 \0 \0 \0 \0 \0 030 \0 \0 \0 \0 \0 \0 \0 030
0262384 \0 \0 \0 \0 \0 \0 \0 031 \0 \0 \0 \0 \0 \0 \0 031
0262400 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0
*
0262656
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