Re: [PATCH] mkfs.xfs, lvm, multi-terrabyte hardware array and luks

[pgf111000 <junkmail@petergfrazier.com>]

Thank you for the quick response.  I have posted on a few luks forums to try
to delve into this issue a little deeper; if they are aware of a resolution
I'll make sure to post it.  The interesting thing is that when I mkfs.ext3
on luks partitions above 2-3gb all is fine; I wish xfs and luks would play
nice.....


Eric Sandeen-3 wrote:
> 
> pgf111000 wrote:
>> When I try to format partitions above 2-3gb my opteron experiences heavy
>> io
>> wait; the mkfs.xfs fails, and I receive the following....
>> 
>>  "mkfs.xfs: libxfs_device_zero write failed: Input/output error"
>> 
>> When I format partions below 2-3gb, there is no problem whatsoever.  I
>> can
>> mkfs.xfs on a +2-3GB non-luks formated partition without a problem... any
>> thoughts?
> 
> Sounds like a LUKS problem, maybe it can't do those large offsets?  xfs
> certainly can...
> 
> I bet you'll find that the 2GB size is the threshold... xfs is just
> trying a write():
> 
>         if ((bytes = write(fd, z, bytes)) < 0) {
>                 fprintf(stderr, _("%s: %s write failed: %s\n"),
>                         progname, __FUNCTION__, strerror(errno));
> 
> maybe try a simple dd write at the end of your large luks device, see
> how that goes.
> 
> -Eric
> 
> 
> 
> 

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