/* $NetBSD: disk_rep.h,v 1.1.1.1 2008/12/22 00:17:50 haad Exp $ */ /* * Copyright (C) 1997-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU Lesser General Public License v.2.1. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef DISK_REP_FORMAT_POOL_H #define DISK_REP_FORMAT_POOL_H #include "label.h" #include "metadata.h" #define MINOR_OFFSET 65536 /* From NSP.cf */ #define NSPMajorVersion 4 #define NSPMinorVersion 1 #define NSPUpdateLevel 3 /* From pool_std.h */ #define POOL_NAME_SIZE (256) #define POOL_MAGIC 0x011670 #define POOL_MAJOR (121) #define POOL_MAX_DEVICES 128 /* When checking for version matching, the first two numbers ** ** are important for metadata formats, a.k.a pool labels. ** ** All the numbers are important when checking if the user ** ** space tools match up with the kernel module............. */ #define POOL_VERSION (NSPMajorVersion << 16 | \ NSPMinorVersion << 8 | \ NSPUpdateLevel) /* Pool label is at the head of every pool disk partition */ #define SIZEOF_POOL_LABEL (8192) /* in sectors */ #define POOL_PE_SIZE (SIZEOF_POOL_LABEL >> SECTOR_SHIFT) #define POOL_PE_START (SIZEOF_POOL_LABEL >> SECTOR_SHIFT) /* Helper fxns */ #define get_pool_vg_uuid(id, pd) do { get_pool_uuid((char *)(id), \ (pd)->pl_pool_id, 0, 0); \ } while(0) #define get_pool_pv_uuid(id, pd) do { get_pool_uuid((char *)(id), \ (pd)->pl_pool_id, \ (pd)->pl_sp_id, \ (pd)->pl_sp_devid); \ } while(0) #define get_pool_lv_uuid(id, pd) do { get_pool_uuid((char *)&(id)[0], \ (pd)->pl_pool_id, 0, 0); \ get_pool_uuid((char*)&(id)[1], \ (pd)->pl_pool_id, 0, 0); \ } while(0) struct pool_disk; struct pool_list; struct user_subpool; struct user_device; struct pool_disk { uint64_t pl_magic; /* Pool magic number */ uint64_t pl_pool_id; /* Unique pool identifier */ char pl_pool_name[POOL_NAME_SIZE]; /* Name of pool */ uint32_t pl_version; /* Pool version */ uint32_t pl_subpools; /* Number of subpools in this pool */ uint32_t pl_sp_id; /* Subpool number within pool */ uint32_t pl_sp_devs; /* Number of data partitions in this subpool */ uint32_t pl_sp_devid; /* Partition number within subpool */ uint32_t pl_sp_type; /* Partition type */ uint64_t pl_blocks; /* Number of blocks in this partition */ uint32_t pl_striping; /* Striping size within subpool */ /* * If the number of DMEP devices is zero, then the next field ** * ** (pl_sp_dmepid) becomes the subpool ID for redirection. In ** * ** other words, if this subpool does not have the capability ** * ** to do DMEP, then it must specify which subpool will do it ** * ** in it's place */ /* * While the next 3 field are no longer used, they must stay to keep ** * ** backward compatibility........................................... */ uint32_t pl_sp_dmepdevs;/* Number of dmep devices in this subpool */ uint32_t pl_sp_dmepid; /* Dmep device number within subpool */ uint32_t pl_sp_weight; /* if dmep dev, pref to using it */ uint32_t pl_minor; /* the pool minor number */ uint32_t pl_padding; /* reminder - think about alignment */ /* * Even though we're zeroing out 8k at the front of the disk before * writing the label, putting this in */ char pl_reserve[184]; /* bump the structure size out to 512 bytes */ }; struct pool_list { struct dm_list list; struct pool_disk pd; struct physical_volume *pv; struct id pv_uuid; struct device *dev; }; struct user_subpool { uint32_t initialized; uint32_t id; uint32_t striping; uint32_t num_devs; uint32_t type; uint32_t dummy; struct user_device *devs; }; struct user_device { uint32_t initialized; uint32_t sp_id; uint32_t devid; uint32_t dummy; uint64_t blocks; struct physical_volume *pv; }; int read_pool_label(struct pool_list *pl, struct labeller *l, struct device *dev, char *buf, struct label **label); void pool_label_out(struct pool_disk *pl, void *buf); void pool_label_in(struct pool_disk *pl, void *buf); void get_pool_uuid(char *uuid, uint64_t poolid, uint32_t spid, uint32_t devid); int import_pool_vg(struct volume_group *vg, struct dm_pool *mem, struct dm_list *pls); int import_pool_lvs(struct volume_group *vg, struct dm_pool *mem, struct dm_list *pls); int import_pool_pvs(const struct format_type *fmt, struct volume_group *vg, struct dm_list *pvs, struct dm_pool *mem, struct dm_list *pls); int import_pool_pv(const struct format_type *fmt, struct dm_pool *mem, struct volume_group *vg, struct physical_volume *pv, struct pool_list *pl); int import_pool_segments(struct dm_list *lvs, struct dm_pool *mem, struct user_subpool *usp, int sp_count); int read_pool_pds(const struct format_type *fmt, const char *vgname, struct dm_pool *mem, struct dm_list *head); struct pool_list *read_pool_disk(const struct format_type *fmt, struct device *dev, struct dm_pool *mem, const char *vg_name); #endif /* DISK_REP_POOL_FORMAT_H */