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We'd like to pass in mda_header to vgname_from_mda(). In order to do this, we need to call raw_read_mda_header() from text_label.c, _text_read(), which gets called from the label_read() path, and peers into the metadata and update vginfo cache. We should check the disable bit here, and if set, not peer into the vg metadata, thus reducing the I/O to disk. In the process, move vgname_from_mda() to layout.h, since the fn only gets called from format_text code, and we need the mda_header definition from the private layout.h. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LVM_FORMAT_TEXT_H
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#define _LVM_FORMAT_TEXT_H
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#include "lvm-types.h"
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#include "metadata.h"
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#define FMT_TEXT_NAME "lvm2"
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#define FMT_TEXT_ALIAS "text"
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#define FMT_TEXT_ORPHAN_VG_NAME ORPHAN_VG_NAME(FMT_TEXT_NAME)
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/*
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* Archives a vg config. 'retain_days' is the minimum number of
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* days that an archive file must be held for. 'min_archives' is
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* the minimum number of archives required to be kept for each
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* volume group.
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*/
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int archive_vg(struct volume_group *vg,
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const char *dir,
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const char *desc, uint32_t retain_days, uint32_t min_archive);
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/*
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* Displays a list of vg backups in a particular archive directory.
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*/
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int archive_list(struct cmd_context *cmd, const char *dir, const char *vgname);
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int archive_list_file(struct cmd_context *cmd, const char *file);
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int backup_list(struct cmd_context *cmd, const char *dir, const char *vgname);
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/*
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* The text format can read and write a volume_group to a file.
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*/
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struct format_type *create_text_format(struct cmd_context *cmd);
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void *create_text_context(struct cmd_context *cmd, const char *path,
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const char *desc);
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struct labeller *text_labeller_create(const struct format_type *fmt);
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int pvhdr_read(struct device *dev, char *buf);
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int add_da(struct dm_pool *mem, struct dm_list *das,
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uint64_t start, uint64_t size);
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void del_das(struct dm_list *das);
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int add_mda(const struct format_type *fmt, struct dm_pool *mem, struct dm_list *mdas,
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struct device *dev, uint64_t start, uint64_t size);
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void del_mdas(struct dm_list *mdas);
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#endif
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