Mounting IRIX disk on Linux

Mounting IRIX disk on Linux

[Mogens Kjaer]

When I try to mount a disk from our SGI Origin 200
machine under Linux (Fedora Core 5), I get the following error message:

# mount /dev/sda1 /mnt/sgi
mount: Function not implemented

The partitions are found during boot:

...
SCSI device sda: 143374738 512-byte hdwr sectors (73408 MB)
sda: Write Protect is off
sda: Mode Sense: 9f 00 10 08
SCSI device sda: drive cache: write back w/ FUA
SCSI device sda: 143374738 512-byte hdwr sectors (73408 MB)
sda: Write Protect is off
sda: Mode Sense: 9f 00 10 08
SCSI device sda: drive cache: write back w/ FUA
 sda: sda1 sda2 sda9 sda11
...
# fdisk -l /dev/sda

Disk /dev/sda (SGI disk label): 255 heads, 63 sectors, 8924 cylinders
Units = cylinders of 16065 * 512 bytes

----- partitions -----
Pt#    Device  Info     Start       End   Sectors  Id  System
 1: /dev/sda1  boot        17      8924 143108498   a  SGI xfs
 2: /dev/sda2  swap         1        16    262144   3  SGI raw
 9: /dev/sda3               0         0      4096   0  SGI volhdr
11: /dev/sda4               0      8924 143374738   6  SGI volume
----- Bootinfo -----
Bootfile: /unix
----- Directory Entries -----

The only thing that gets logged during the mount is:

SGI XFS with ACLs, security attributes, large block numbers, no debug
enabled
SGI XFS Quota Management subsystem


How do I determine which of the requirements
listed in:

http://oss.sgi.com/projects/xfs/faq.html#useirixxfs

that hasn't been fulfilled?

Mogens
-- 
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Re: Mounting IRIX disk on Linux

[Russell Cattelan]

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Was this disk cleanly unmounted from the SGI box?

If the log is dirty linux won't be able to mount it since it will be
in the wrong endian format (well assuming you are using a 
little endian linux box)

If you can cleanly mount and unmount on the sgi box
if that is not possible run xfs_repair -L to clear
the log. But not that will potentially loose important
file system info.


On Mon, 2006-09-11 at 12:32 +0200, Mogens Kjaer wrote:
> When I try to mount a disk from our SGI Origin 200
> machine under Linux (Fedora Core 5), I get the following error message:
> 
> # mount /dev/sda1 /mnt/sgi
> mount: Function not implemented
> 
> The partitions are found during boot:
> 
> ...
> SCSI device sda: 143374738 512-byte hdwr sectors (73408 MB)
> sda: Write Protect is off
> sda: Mode Sense: 9f 00 10 08
> SCSI device sda: drive cache: write back w/ FUA
> SCSI device sda: 143374738 512-byte hdwr sectors (73408 MB)
> sda: Write Protect is off
> sda: Mode Sense: 9f 00 10 08
> SCSI device sda: drive cache: write back w/ FUA
>  sda: sda1 sda2 sda9 sda11
> ...
> # fdisk -l /dev/sda
> 
> Disk /dev/sda (SGI disk label): 255 heads, 63 sectors, 8924 cylinders
> Units = cylinders of 16065 * 512 bytes
> 
> ----- partitions -----
> Pt#    Device  Info     Start       End   Sectors  Id  System
>  1: /dev/sda1  boot        17      8924 143108498   a  SGI xfs
>  2: /dev/sda2  swap         1        16    262144   3  SGI raw
>  9: /dev/sda3               0         0      4096   0  SGI volhdr
> 11: /dev/sda4               0      8924 143374738   6  SGI volume
> ----- Bootinfo -----
> Bootfile: /unix
> ----- Directory Entries -----
> 
> The only thing that gets logged during the mount is:
> 
> SGI XFS with ACLs, security attributes, large block numbers, no debug
> enabled
> SGI XFS Quota Management subsystem
> 
> 
> How do I determine which of the requirements
> listed in:
> 
> http://oss.sgi.com/projects/xfs/faq.html#useirixxfs
> 
> that hasn't been fulfilled?
> 
> Mogens

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Re: Mounting IRIX disk on Linux

[Mogens Kjaer]

Russell Cattelan wrote:
> Was this disk cleanly unmounted from the SGI box?
> 
> If the log is dirty linux won't be able to mount it since it will be
> in the wrong endian format (well assuming you are using a 
> little endian linux box)
> 
> If you can cleanly mount and unmount on the sgi box
> if that is not possible run xfs_repair -L to clear
> the log. But not that will potentially loose important
> file system info.

Some of the disks are dirty, some are clean (the Origin boots,
but halt during the boot phase because of multiple fan failure -
a little strange as all fans are running).

I could mount one of the disks after the xfs_repair -L trick,
but it gave massive file system corruption.

Not a big deal, we have backups of everything.

Mogens
-- 
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Re: Mounting IRIX disk on Linux

[Mogens Kjaer]

linux-xfs@oss.sgi.com wrote:
> Mogens Kjaer wrote:
> 
>> How do I determine which of the requirements
>> listed in:
>>
>> http://oss.sgi.com/projects/xfs/faq.html#useirixxfs
>>
>> that hasn't been fulfilled?
> 
> 
> # xfs_db /dev/<device>
> xfs_db> sb 0
> xfs_db> p

This gives me:

magicnum = 0x58465342
blocksize = 4096
dblocks = 17888562
rblocks = 0
rextents = 0
uuid = 06ea04fb-1f3f-1024-8ab0-080069057580
logstart = 8912900
rootino = 128
rbmino = 129
rsumino = 130
rextsize = 16
agblocks = 259255
agcount = 69
rbmblocks = 0
logblocks = 1168
versionnum = 0x1084
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 = 18
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 113856
ifree = 113202
fdblocks = 16727530
frextents = 0
uquotino = 0
gquotino = 0
qflags = 0
flags = 0
shared_vn = 0
inoalignmt = 2
unit = 0
width = 0
dirblklog = 0
logsectlog = 0
logsectsize = 0
logsunit = 0
features2 = 0

How do I interprete this?

My guess is that this fs does not have directory
format 2, it might have been made before IRIX 6.5.5

Mogens
-- 
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Re: Mounting IRIX disk on Linux

[Timothy Shimmin]

Hi Mogens,

Mogens Kjaer wrote:
> linux-xfs@oss.sgi.com wrote:
>> Mogens Kjaer wrote:
>>
>>> How do I determine which of the requirements
>>> listed in:
>>>
>>> http://oss.sgi.com/projects/xfs/faq.html#useirixxfs
>>>
>>> that hasn't been fulfilled?
>>
>> # xfs_db /dev/<device>
>> xfs_db> sb 0
>> xfs_db> p
> 
> This gives me:
> 

> versionnum = 0x1084

#define XFS_SB_VERSION_DIRV2BIT         0x2000

So, yes it doesn't look like you have v2 directories
and there is no support for it in Linux.

BTW, on xfs_db on Linux you can show this using the version command
if it is recent enough.
e.g.
# xfs_db -c version -r /dev/sda6
versionnum [0x3084+0x0] = V4,ALIGN,DIRV2,EXTFLG


> 
> How do I interprete this?
above

> 
> My guess is that this fs does not have directory
> format 2, it might have been made before IRIX 6.5.5
yep, sorry.

--Tim

Re: Mounting IRIX disk on Linux

[Eric Sandeen]

Timothy Shimmin wrote:

>> This gives me:
>>
> 
>> versionnum = 0x1084
> 
> #define XFS_SB_VERSION_DIRV2BIT         0x2000
> 
> So, yes it doesn't look like you have v2 directories
> and there is no support for it in Linux.

Hm, the kernel should probably print something more helpful in that case :)

-Eric

Re: Mounting IRIX disk on Linux

[Timothy Shimmin]

Eric Sandeen wrote:
> Timothy Shimmin wrote:
> 
>>> This gives me:
>>>
>>
>>> versionnum = 0x1084
>>
>> #define XFS_SB_VERSION_DIRV2BIT         0x2000
>>
>> So, yes it doesn't look like you have v2 directories
>> and there is no support for it in Linux.
> 
> Hm, the kernel should probably print something more helpful in that case :)
> 
> -Eric

Good point.
And indeed it should have:

xfs_mount.c/xfs_mount_validate_sb()
...
         /*
          * Version 1 directory format has never worked on Linux.
          */
         if (unlikely(!XFS_SB_VERSION_HASDIRV2(sbp))) {
                 xfs_fs_mount_cmn_err(flags,
                         "file system using version 1 directory format");
                 return XFS_ERROR(ENOSYS);
         }

Did this not happen, Mogens?

--Tim

Re: Mounting IRIX disk on Linux

[Mogens Kjaer]

Timothy Shimmin wrote:
..
>                         "file system using version 1 directory format");

> Did this not happen, Mogens?

No. Nothing in /var/log/messages, and the only thing I
get on the screen when I mount is "Function not implemented".

Mogens

-- 
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Re: Mounting IRIX disk on Linux

[Russell Cattelan]

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On Thu, 2006-09-14 at 17:16 +0200, Mogens Kjaer wrote:
> Timothy Shimmin wrote:
> ..
> >                         "file system using version 1 directory format");
> 
> > Did this not happen, Mogens?
> 
> No. Nothing in /var/log/messages, and the only thing I
> get on the screen when I mount is "Function not implemented".

BTW older versions xfs did have limited support for v1 directories.
It didn't work in all cases (nfs was a big problem) but it should
would well enough to get your data off.
I would grab an older kernel off the oss ftp site.

> 
> Mogens
> 

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