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thin: limited support for -l%FREE allocation

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This is just a temporary fix to support allocation of -l%FREE.

The number of free extent serves to calculate estimated metadata
size. This value is then substracted twice to keep some
free space for recover.
This commit is contained in:
Zdenek Kabelac 2013-05-13 13:03:04 +02:00
parent 55fe07ad98
commit 6fc67f5509
1 changed files with 8 additions and 0 deletions
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8
tools/lvcreate.c
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@ -321,6 +321,14 @@ static int _update_extents_params(struct volume_group *vg,
if (!(lp->poolmetadataextents =
extents_from_size(vg->cmd, lp->poolmetadatasize, vg->extent_size)))
return_0;
if (lcp->percent == PERCENT_FREE) {
if (lp->extents <= (2 * lp->poolmetadataextents)) {
log_error("Not enough space for thin pool creation.");
return 0;
}
/* FIXME: persistent hidden space in VG wanted */
lp->extents -= (2 * lp->poolmetadataextents);
}
}
return 1;