Re: unmount issues with 2.4.5-ac5, 3ware, and ReiserFS (was: kernel-2.4.5

[thunder7@xs4all.nl]

On Thu, May 31, 2001 at 05:04:50PM -0500, Jordan wrote:
> Alan Cox wrote:
> > 
> > > I'm staying on 2.4.5-ac5 for whatever it's worth (putting my life on the
> > > line for the community? kidding...) and will report anything new. I will
> > > be on the lookout for later ac patches, 2.4.6 ... and hopefully anything
> > > anybody can share with me about this. I hope we'll see an end to these
> > 
> > Can you tell me if 2.4.5-ac4 is ok. ac5 has a small 'obviously correct'
> > reiserfs module unload change that seems the first suspect
> > 
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> 
> I have seen this same problem with unmounting in 2.4.5-ac5, it was
> perfectly fine in 2.4.5-ac3 and ac4.  I would guess the module unload is
> what did it.
> 
2.4.5-ac4 was fine, 2.4.5-ac5:

/space in /etc/fstab:

/dev/hda10	/space1			reiserfs	defaults 1 2

strace umount /space1:

open("/usr/lib/locale/en_US/LC_TIME", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2441, ...}) = 0
old_mmap(NULL, 2441, PROT_READ, MAP_PRIVATE, 3, 0) = 0x4001f000
close(3)                                = 0
open("/usr/lib/locale/en_US/LC_NUMERIC", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=44, ...}) = 0
old_mmap(NULL, 44, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40020000
close(3)                                = 0
open("/usr/lib/locale/en_US/LC_CTYPE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=104804, ...}) = 0
old_mmap(NULL, 104804, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40137000
close(3)                                = 0
SYS_199(0x40131ad8, 0, 0x40132760, 0x40130210, 0) = 0
semop(1074993880, 0x40130210, 0)        = 0
brk(0x8056000)                          = 0x8056000
readlink("/space1", 0xbfffe51c, 4095)   = -1 EINVAL (Invalid argument)
open("/etc/mtab", O_RDONLY)             = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=680, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40021000
read(3, "/dev/hde1 / ext2 rw 0 0\nproc /pr"..., 4096) = 680
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x40021000, 4096)                = 0
oldumount("/space1"

and there it hangs. The kernel doesn't hang, but while 'mount' displays
/space1 as mounted, ls /space1/ says nothing. df -m reveals:

Filesystem           1M-blocks      Used Available Use% Mounted on
/dev/hda10                2015       907      1005  48% /space1

Good luck,
Jurriaan
-- 
The music in my heart I bore long after it was heard no more.
        William Wordsworth
GNU/Linux 2.4.5-ac5 SMP/ReiserFS 2x1402 bogomips load av: 5.60 2.71 1.16