Assistance needed mounting XFS version 1 filesystem

Assistance needed mounting XFS version 1 filesystem

[Jordan]

Hello,
I have been trying to mount an old Maxoptix optical drive with
XFS-formatted media for a week now without success.  From what I can
tell, the media were formatted using XFS version 1, support for which
was removed from the Linux kernel a few years back.

Here is the output of fdisk -l:
Disk /dev/sda (SGI disk label): 64 heads, 32 sectors, 1096 cylinders
Units = cylinders of 2048 * 512 bytes

----- partitions -----
Pt#     Device  Info     Start       End   Sectors  Id  System
 1:  /dev/sda1  boot         2       986   2018340   a  SGI xfs
 2:  /dev/sda2  swap       987      1096    224490   3  SGI raw
 9:  /dev/sda3               0         1      2100   0  SGI volhdr
11:  /dev/sda4               0      1096   2244930   6  SGI volume
----- Bootinfo -----
Bootfile: /unix
----- Directory Entries -----
 0: sgilabel   sector    2 size     512

When I try to mount the /dev/sda1 partition, I get the following error:

# mount -t xfs /dev/sda1 /optical
mount: block device /dev/sda1 is write-protected, mounting read-only
mount: /dev/sda1: can't read superblock

# dmesg | tail
Current sda: sense key Data Protect
Additional sense: Write protected
end_request: I/O error, dev sda, sector 1017642
xfs_force_shutdown(sda1,0x1) called from line 353 of file
fs/xfs/xfs_rw.c.  Return address = 0x44ff9bfa
Filesystem "sda1": I/O Error Detected.  Shutting down filesystem: sda1
Please umount the filesystem, and rectify the problem(s)
I/O error in filesystem ("sda1") meta-data dev sda1 block 0xf7dfe
 ("xlog_bwrite") error 5 buf count 131072
XFS: failed to locate log tail
XFS: log mount/recovery failed
XFS: log mount failed

xfs_check comes back with no errors.

# xfs_db /dev/sda1
xfs_db> sb 0
xfs_db> p
magicnum = 0x58465342
blocksize = 4096
dblocks = 252292
rblocks = 0
rextents = 0
uuid = d4bc0c01-b21d-1001-866b-0800690a794d
logstart = 131076
rootino = 128
rbmino = 129
rsumino = 130
rextsize = 16
agblocks = 31537
agcount = 8
rbmblocks = 0
logblocks = 1000
versionnum = 0x1
sectsize = 512
inodesize = 256
inopblock = 16
fname = "\000\000\000\000\000\000\000\000\000\000\000\000"
blocklog = 12
sectlog = 9
inodelog = 8
inopblog = 4
agblklog = 15
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 704
ifree = 322
fdblocks = 122918
frextents = 0
uquotino = 0
gquotino = 0
qflags = 0
flags = 0
shared_vn = 0
inoalignmt = 0
unit = 0
width = 0
dirblklog = 0
logsectlog = 0
logsectsize = 0
logsunit = 0
features2 = 0
xfs_db>

My running kernel is 2.6.5-1.358 on Fedora Core 2.  I went with an old
distribution to try to find a kernel that still has XFS version 1
support built in.

Any help or advice you could provide would be great.

Jordan

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

Re: Assistance needed mounting XFS version 1 filesystem

[Eric Sandeen]

Jordan wrote:
> Hello,
> I have been trying to mount an old Maxoptix optical drive with
> XFS-formatted media for a week now without success.  From what I can
> tell, the media were formatted using XFS version 1, support for which
> was removed from the Linux kernel a few years back.
> 
> Here is the output of fdisk -l:
> Disk /dev/sda (SGI disk label): 64 heads, 32 sectors, 1096 cylinders
> Units = cylinders of 2048 * 512 bytes
> 
> ----- partitions -----
> Pt#     Device  Info     Start       End   Sectors  Id  System
>  1:  /dev/sda1  boot         2       986   2018340   a  SGI xfs
>  2:  /dev/sda2  swap       987      1096    224490   3  SGI raw
>  9:  /dev/sda3               0         1      2100   0  SGI volhdr
> 11:  /dev/sda4               0      1096   2244930   6  SGI volume
> ----- Bootinfo -----
> Bootfile: /unix
> ----- Directory Entries -----
>  0: sgilabel   sector    2 size     512
> 
> When I try to mount the /dev/sda1 partition, I get the following error:
> 
> # mount -t xfs /dev/sda1 /optical
> mount: block device /dev/sda1 is write-protected, mounting read-only
> mount: /dev/sda1: can't read superblock
> 
> # dmesg | tail
> Current sda: sense key Data Protect
> Additional sense: Write protected
> end_request: I/O error, dev sda, sector 1017642

Seems like this might be a real IO error... it's within the size
of sda1 (from above), and also within the filesystem geometry
(from db output below)

Maybe you can try creating a dd_rescue image of the fs, and mount that?

-Eric

> xfs_force_shutdown(sda1,0x1) called from line 353 of file
> fs/xfs/xfs_rw.c.  Return address = 0x44ff9bfa
> Filesystem "sda1": I/O Error Detected.  Shutting down filesystem: sda1
> Please umount the filesystem, and rectify the problem(s)
> I/O error in filesystem ("sda1") meta-data dev sda1 block 0xf7dfe
>  ("xlog_bwrite") error 5 buf count 131072
> XFS: failed to locate log tail
> XFS: log mount/recovery failed
> XFS: log mount failed
> 
> xfs_check comes back with no errors.
> 
> # xfs_db /dev/sda1
> xfs_db> sb 0
> xfs_db> p
> magicnum = 0x58465342
> blocksize = 4096
> dblocks = 252292
> rblocks = 0
> rextents = 0
> uuid = d4bc0c01-b21d-1001-866b-0800690a794d
> logstart = 131076
> rootino = 128
> rbmino = 129
> rsumino = 130
> rextsize = 16
> agblocks = 31537
> agcount = 8
> rbmblocks = 0
> logblocks = 1000
> versionnum = 0x1
> sectsize = 512
> inodesize = 256
> inopblock = 16
> fname = "\000\000\000\000\000\000\000\000\000\000\000\000"
> blocklog = 12
> sectlog = 9
> inodelog = 8
> inopblog = 4
> agblklog = 15
> rextslog = 0
> inprogress = 0
> imax_pct = 25
> icount = 704
> ifree = 322
> fdblocks = 122918
> frextents = 0
> uquotino = 0
> gquotino = 0
> qflags = 0
> flags = 0
> shared_vn = 0
> inoalignmt = 0
> unit = 0
> width = 0
> dirblklog = 0
> logsectlog = 0
> logsectsize = 0
> logsunit = 0
> features2 = 0
> xfs_db>
> 
> My running kernel is 2.6.5-1.358 on Fedora Core 2.  I went with an old
> distribution to try to find a kernel that still has XFS version 1
> support built in.
> 
> Any help or advice you could provide would be great.
> 
> Jordan
> 
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
> 

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

Re: Assistance needed mounting XFS version 1 filesystem

[Jordan]

On Fri, Jan 22, 2010 at 11:39 PM, Eric Sandeen <sandeen@sandeen.net> wrote:
> Jordan wrote:
>> Hello,
>> I have been trying to mount an old Maxoptix optical drive with
>> XFS-formatted media for a week now without success.  From what I can
>> tell, the media were formatted using XFS version 1, support for which
>> was removed from the Linux kernel a few years back.
>>
>> Here is the output of fdisk -l:
>> Disk /dev/sda (SGI disk label): 64 heads, 32 sectors, 1096 cylinders
>> Units = cylinders of 2048 * 512 bytes
>>
>> ----- partitions -----
>> Pt#     Device  Info     Start       End   Sectors  Id  System
>>  1:  /dev/sda1  boot         2       986   2018340   a  SGI xfs
>>  2:  /dev/sda2  swap       987      1096    224490   3  SGI raw
>>  9:  /dev/sda3               0         1      2100   0  SGI volhdr
>> 11:  /dev/sda4               0      1096   2244930   6  SGI volume
>> ----- Bootinfo -----
>> Bootfile: /unix
>> ----- Directory Entries -----
>>  0: sgilabel   sector    2 size     512
>>
>> When I try to mount the /dev/sda1 partition, I get the following error:
>>
>> # mount -t xfs /dev/sda1 /optical
>> mount: block device /dev/sda1 is write-protected, mounting read-only
>> mount: /dev/sda1: can't read superblock
>>
>> # dmesg | tail
>> Current sda: sense key Data Protect
>> Additional sense: Write protected
>> end_request: I/O error, dev sda, sector 1017642
>
> Seems like this might be a real IO error... it's within the size
> of sda1 (from above), and also within the filesystem geometry
> (from db output below)
>
> Maybe you can try creating a dd_rescue image of the fs, and mount that?
>
> -Eric


That did the trick.  Thanks very much for the idea, I hadn't thought
to try accessing it through another means besides mount.

Jordan


>
>> xfs_force_shutdown(sda1,0x1) called from line 353 of file
>> fs/xfs/xfs_rw.c.  Return address = 0x44ff9bfa
>> Filesystem "sda1": I/O Error Detected.  Shutting down filesystem: sda1
>> Please umount the filesystem, and rectify the problem(s)
>> I/O error in filesystem ("sda1") meta-data dev sda1 block 0xf7dfe
>>  ("xlog_bwrite") error 5 buf count 131072
>> XFS: failed to locate log tail
>> XFS: log mount/recovery failed
>> XFS: log mount failed
>>
>> xfs_check comes back with no errors.
>>
>> # xfs_db /dev/sda1
>> xfs_db> sb 0
>> xfs_db> p
>> magicnum = 0x58465342
>> blocksize = 4096
>> dblocks = 252292
>> rblocks = 0
>> rextents = 0
>> uuid = d4bc0c01-b21d-1001-866b-0800690a794d
>> logstart = 131076
>> rootino = 128
>> rbmino = 129
>> rsumino = 130
>> rextsize = 16
>> agblocks = 31537
>> agcount = 8
>> rbmblocks = 0
>> logblocks = 1000
>> versionnum = 0x1
>> sectsize = 512
>> inodesize = 256
>> inopblock = 16
>> fname = "\000\000\000\000\000\000\000\000\000\000\000\000"
>> blocklog = 12
>> sectlog = 9
>> inodelog = 8
>> inopblog = 4
>> agblklog = 15
>> rextslog = 0
>> inprogress = 0
>> imax_pct = 25
>> icount = 704
>> ifree = 322
>> fdblocks = 122918
>> frextents = 0
>> uquotino = 0
>> gquotino = 0
>> qflags = 0
>> flags = 0
>> shared_vn = 0
>> inoalignmt = 0
>> unit = 0
>> width = 0
>> dirblklog = 0
>> logsectlog = 0
>> logsectsize = 0
>> logsunit = 0
>> features2 = 0
>> xfs_db>
>>
>> My running kernel is 2.6.5-1.358 on Fedora Core 2.  I went with an old
>> distribution to try to find a kernel that still has XFS version 1
>> support built in.
>>
>> Any help or advice you could provide would be great.
>>
>> Jordan
>>
>> _______________________________________________
>> xfs mailing list
>> xfs@oss.sgi.com
>> http://oss.sgi.com/mailman/listinfo/xfs
>>
>
>

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs