[gfarm-discuss:04055] Re: 32bit application segmentation fault on 64bit

[Takuya Ishibashi <takuya@xxxxxxxxxx>]

Hello Somsak,

mplayer can play and seek a file ( > 1GB) on GfarmFS-FUSE in my
environment (Fedora Core 5, 32bit).

Can you do it on fusexmp_fh filesystem?
fusexmp_fh is included in FUSE source package. 
(Please see README of FUSE)

Regards,
--
Takuya Ishibashi


From: Somsak Sriprayoonsakul <somsak_sr@xxxxxxxxxxxxxx>
Subject: [gfarm-discuss:03644] Re: [Fwd:[Fwd:32bit application segmentation fault on 64bit]]
Date: Thu, 17 Aug 2006 12:13:24 +0700

> Dear Noriyuki-san
> 
>     Here's the strace log of gfarm-fuse with mplayer (NOT the strace log 
> of running 32bit app, I'm not finish with reompilation & re-installation 
> of 32bit gfarm yet).
> 
> Thank you very much.
> 
> -------- Original Message --------
> Subject: 	Re: [Fwd: [gfarm-discuss:03635] Re: 32bit application 
> segmentation fault on 64bit]
> Date: 	Thu, 17 Aug 2006 10:50:39 +0700
> From: 	Sugree Phatanapherom <sugree_ph@xxxxxxxxxxxxxx>
> To: 	somsak_sr@xxxxxxxxxxxxxx
> References: 	<44E31C98.5040209@xxxxxxxxxxxxxx>
> 
> 
> 
> Oops! I'm sorry. It is not exactly _llseek() but _llseek() with read()
> 
> ----------------> snippet <----------------
> open("combination-1531.inp", O_RDONLY|O_LARGEFILE) = 3
> _llseek(3, 0, [400910354], SEEK_END)    = 0
> _llseek(3, 0, [0], SEEK_SET)            = 0
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> _llseek(3, 0, [0], SEEK_SET)            = 0
> _llseek(3, 0, [0], SEEK_SET)            = 0
> read(3, 0x880703c, 2048)                = -1 EINVAL (Invalid argument)
> ----------------> snippet <----------------
> 
> Sugree
> 
> Somsak Sriprayoonsakul wrote:
> > What's the problem about lseek?
> >
> > -------- Original Message --------
> > Subject:     [gfarm-discuss:03635] Re: 32bit application segmentation 
> > fault on 64bit
> > Date:     Wed, 16 Aug 2006 21:06:43 +0900
> > From:     SODA Noriyuki <soda@xxxxxxxxx>
> > Reply-To:     gfarm-discuss@xxxxxxxxxx
> > To:     Somsak Sriprayoonsakul <somsak_sr@xxxxxxxxxxxxxx>
> > CC:     gfarm-discuss@xxxxxxxxxx
> > References:     
> > <452F37AE49199D49B1702D7D45038C4D6B0E13@xxxxxxxxxxxxxx> 
> > <44E2A2A1.3030804@xxxxxxxxxxxxxx>
> >
> >
> >
> >>>>>> On Wed, 16 Aug 2006 11:44:17 +0700,
> >      Somsak Sriprayoonsakul <somsak_sr@xxxxxxxxxxxxxx> said:
> >
> >>> Maybe it's worthwhile to check out Gfarm-Fuse system. In our 
> >>> experience,
> >>> the Gfarm-Fuse is much more stable in supporting preexisting
> >>> applications.
> >
> >> Yes. Actually we already tested that and gfarm-fuse work great in 
> >> term of performance. Somehow gfarm-fuse only accept single user per 
> >> mounted file system, also it does not support lseek system call, 
> >> which is required by some application. That's why we're trying to use 
> >> user-level instead.
> >
> > Hmm? What is the problem about lseek?
> > As far as I know, lseek just does work with GfarmFS-FUSE.
> > Thus, if you could allow your users to mount gfarm filesystem via
> > GfarmFS-FUSE, certainly it could be an option as Wilfred said.
> >
> > If your problem with lseek was a data coherency problem, please try
> > "-unbuf" option of GfarmFS-FUSE.
> 
> 
> 
> -- 
> -----------------------------------------------------------------------------------
> Somsak Sriprayoonsakul
> 
> Thai National Grid Center
> Software Industry Promotion Agency
> Ministry of ICT, Thailand
> somsak_sr@xxxxxxxxxxxxxx
> -----------------------------------------------------------------------------------
>