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system_id: detect an lvm1 system id

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Detect an lvm1 system id by looking at the WRITE_LOCKED flag.
Don't copy this lvm1 system id into vg->system_id so that the
restrictions associated with the new system id are not applied
to the old VG with the inherited lvm1 system id.
This commit is contained in:
David Teigland 2015-03-09 13:27:34 -05:00
parent 08371a8b80
commit e9a233ee8e
1 changed files with 8 additions and 0 deletions
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8
lib/format_text/import_vsn1.c
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@ -812,6 +812,14 @@ static struct volume_group *_read_vg(struct format_instance *fid,
goto bad;
}
/*
* A system id without WRITE_LOCKED is an old lvm1 system id.
*/
if (!(vg->status & LVM_WRITE_LOCKED) && system_id[0]) {
memcpy(vg->lvm1_system_id, system_id, NAME_LEN + 1);
memset(system_id, 0, NAME_LEN + 1);
}
if (vg->status & LVM_WRITE_LOCKED) {
vg->status |= LVM_WRITE;
vg->status &= ~LVM_WRITE_LOCKED;