Re: [lvm-devel] Re: lvm 0.9.1-beta1 still segfaults vgexport

From: Todd M. Roy (troy@holstein.com)
Date: Mon Jan 15 2001 - 06:23:35 EST


Andrea,
  This worked for me on my home machine!!

Thank you!

-- todd --

Andrea Arcangeli wrote:
>
> On Sun, Jan 14, 2001 at 05:32:34PM +0100, Andrea Arcangeli wrote:
> > BTW, I can easily reproduce. I was near to go into it yesterday but got
> > interrupted by other issues (like the merging of the 0.9.1-beta1 kernel driver
> > and extraction of the strictly necessary fixes from the 0.9.1-beta1 userspace
> > against 0.9).
>
> This looks the right fix for the vgexport segfault trivially reproducible
> on 0.9 and 0.9.1_beta1 lvmtools. Now that I see the details of the bug
> it was possible to reproduce it also with `vgdisplay -D xxxxxxx' where
> xxxxxxx is just a random name of a not existent VG.
>
> --- ./tools/lib/pv_read_all_pv_of_vg.c.~1~ Mon Jan 15 03:35:51 2001
> +++ ./tools/lib/pv_read_all_pv_of_vg.c Mon Jan 15 04:57:00 2001
> @@ -137,6 +137,11 @@
> while ( pv_this[np] != NULL) np++;
> }
>
> + if ( np == 0) {
> + ret = -LVM_EPV_READ_ALL_PV_OF_VG_NP;
> + goto pv_read_all_pv_of_vg_end;
> + }
> +
> /* avoid multiple access pathes */
> for ( p = 0; pv_this[p] != NULL; p++) {
> /* avoid multiple access pathes for now (2.4.0-test8)
>
> I also got a reminder from Marco d'Itri to integrate this hack for
> some more non-x86 platform:
>
> --- ./tools/lib/pv_get_size.c.~1~ Mon Jan 15 03:35:51 2001
> +++ ./tools/lib/pv_get_size.c Mon Jan 15 04:04:03 2001
> @@ -58,7 +58,7 @@
> #define read_le(x) (x)
> #endif
>
> -#if !defined(__alpha__) && !defined(__s390__)
> +#ifdef __i386__
> int pv_get_size ( char *dev_name, struct partition *part_ptr) {
> int i = 0;
> int dir_cache_count = 0;
>
> Andrea
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