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Re: [linux-lvm] Old problem cropping up again with 0.9 lvm tools?



On Wed, Nov 29, 2000 at 05:49:52PM +0100, Luca Berra wrote:
> On Tue, Nov 28, 2000 at 07:51:47PM -0800, John DeFranco wrote:
> > Hi,
> > 
> > I'm having a problem doing a pvcreate on a raid
> > device. It fails with:
> you should apply the attached patch
> but thre is another problem:
> vgscan will fail in pv_read
> since pv_read.c contains a line which makes it fail if the device is an
> me device.

It's used to distinguish in a higher library layer between MD and other devices.

> 
> 0.8.1 has the same line, but pvread s not calle d by vgscan :)

It gets called indirectly from from vgscan by calling vg_read_with_pv_and_lv().

> 
> heinz is there any reason for the code in pv-read.c to exist?
> 
> L.
> 
> -- 
> Luca Berra -- bluca comedia it
>     Communication Media & Services S.r.l.

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> Date: Sun, 26 Nov 2000 11:04:04 +0100
> From: Luca Berra <bluca vodka it>
> To: bluca comedia it
> Subject: LVM09
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> 
> -- 
> Luca Berra -- bluca vodka it
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> --- lib/pv_get_size.c.bluca	Mon Nov 13 01:20:11 2000
> +++ lib/pv_get_size.c	Sun Nov 26 10:53:09 2000
> @@ -87,6 +87,7 @@
>        goto pv_get_size_end;
>     }
>  
> +   memset ( disk_dev_name, 0, sizeof ( disk_dev_name));
>     if ( ( cache_entry = lvm_dir_cache_find ( dev_name)) != NULL) {
>        if ( lvm_check_partitioned_dev ( cache_entry->st_rdev) == TRUE) {
>           st_rdev = cache_entry->st_rdev -
> @@ -96,14 +97,14 @@
>              if ( dir_cache[i].st_rdev == st_rdev)
>                 break;
>           }
> -      }
> +         strncpy ( disk_dev_name, dir_cache[i].dev_name, sizeof ( disk_dev_name) - 1);
> +      } else {
> +         strncpy ( disk_dev_name, dev_name, sizeof ( disk_dev_name) - 1);
> +	  }
>     } else {
>        ret = -LVM_EPV_GET_SIZE_LVM_DIR_CACHE;
>        goto pv_get_size_end;
>     }
> -
> -   memset ( disk_dev_name, 0, sizeof ( disk_dev_name));
> -   strncpy ( disk_dev_name, dir_cache[i].dev_name, sizeof ( disk_dev_name) - 1);
>  
>     first = 1;
>     if ( ( pv_handle = open ( disk_dev_name, O_RDONLY)) == -1) {



-- 

Regards,
Heinz      -- The LVM guy --

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Bartningstr. 12
                                                  64289 Darmstadt
                                                  Germany
Mauelshagen Sistina com                           +49 6151 7103 86
                                                       FAX 7103 96
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