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/*
* Copyright ( C ) 2001 Sistina Software
*
* LVM is free software ; you can redistribute it and / or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation ; either version 2 , or ( at your option )
* any later version .
*
* LVM is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*
* You should have received a copy of the GNU General Public License
* along with LVM ; see the file COPYING . If not , write to
* the Free Software Foundation , 59 Temple Place - Suite 330 ,
* Boston , MA 02111 - 1307 , USA .
*
*/
# include "tools.h"
static int vgreduce_single ( struct volume_group * vg , struct physical_volume * pv ) ;
int vgreduce ( int argc , char * * argv )
{
struct volume_group * vg ;
char * vg_name ;
if ( ! argc ) {
log_error ( " Please give volume group name and "
" physical volume paths " ) ;
return EINVALID_CMD_LINE ;
}
if ( argc = = 1 & & ! arg_count ( all_ARG ) ) {
log_error ( " Please enter physical volume paths or option -a " ) ;
return EINVALID_CMD_LINE ;
}
if ( argc > 1 & & arg_count ( all_ARG ) ) {
log_error ( " Option -a and physical volume paths mutually "
" exclusive " ) ;
return EINVALID_CMD_LINE ;
}
vg_name = argv [ 0 ] ;
argv + + ;
argc - - ;
log_verbose ( " Finding volume group %s " , vg_name ) ;
if ( ! ( vg = ios - > vg_read ( ios , vg_name ) ) ) {
log_error ( " Volume group %s doesn't exist " , vg_name ) ;
return ECMD_FAILED ;
}
if ( ! ( vg - > status & ACTIVE ) ) {
log_error ( " Volume group %s is not active " , vg_name ) ;
return ECMD_FAILED ;
}
if ( ! ( vg - > status & EXTENDABLE_VG ) ) {
log_error ( " Volume group %s is not reducable " , vg_name ) ;
return ECMD_FAILED ;
}
/* FIXME: Pass private structure through to all these functions */
/* and update in batch here? */
return process_each_pv ( argc , argv , vg , vgreduce_single ) ;
/******* FIXME
log_error ( " no empty physical volumes found in volume group \" %s \" " , vg_name ) ;
log_verbose
( " volume group \" %s \" will be reduced by %d physical volume%s " ,
vg_name , np , np > 1 ? " s " : " " ) ;
log_verbose ( " reducing volume group \" %s \" by physical volume \" %s \" " , vg_name , pv_names [ p ] ) ;
log_print
( " volume group \" %s \" %ssuccessfully reduced by physical volume%s: " ,
vg_name , error > 0 ? " NOT " : " " , p > 1 ? " s " : " " ) ;
log_print ( " %s " , pv_this [ p ] - > pv_name ) ;
* * * * * * * */
}
/* Or take pv_name instead? */
static int vgreduce_single ( struct volume_group * vg , struct physical_volume * pv )
{
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struct list * pvh ;
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const char * name = dev_name ( pv - > dev ) ;
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if ( pv - > pe_allocated ) {
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log_error ( " Physical volume %s still in use " , name ) ;
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return ECMD_FAILED ;
}
/********* FIXME: Is this unnecessary after checking pe_allocated?
if ( pv - > lv_cur > 0 ) {
log_error ( " can't reduce volume group \" %s \" by used physical volume \" %s \" " , vg_name , error_pv_name ) ;
}
* * * * * * * * */
if ( vg - > pv_count = = 1 ) {
log_error ( " Can't remove final physical volume %s from "
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" volume group %s " , name , vg - > name ) ;
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return ECMD_FAILED ;
}
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pvh = find_pv_in_vg ( vg , name ) ;
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log_verbose ( " Removing %s from volume group %s " , name , vg - > name ) ;
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list_del ( pvh ) ;
* pv - > vg_name = ' \0 ' ;
vg - > pv_count - - ;
if ( ! ( ios - > vg_write ( ios , vg ) ) ) {
log_error ( " Removal of physical volume %s from %s failed " ,
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name , vg - > name ) ;
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return ECMD_FAILED ;
}
if ( ! ios - > pv_write ( ios , pv ) ) {
log_error ( " Failed to clear metadata from physical volume %s "
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" after removal from %s " , name , vg - > name ) ;
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return ECMD_FAILED ;
}
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log_print ( " Removed %s from volume group %s " , name , vg - > name ) ;
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return 0 ;
}