GPFS: Administration and Programming Reference - IRA Home

gpfs_iattr_t Structure
Name
gpfs_iattr_t – Contains attributes of a GPFS inode.
Library
GPFS Library (libgpfs.a for AIX, libgpfs.so for Linux)
Structure
typedef struct gpfs_iattr
{
int ia_version; /* this struct version */
int ia_reclen; /* sizeof this structure */
int ia_checksum; /* validity check on iattr struct */
gpfs_mode_t ia_mode; /* access mode */
gpfs_uid_t ia_uid; /* owner uid */
gpfs_gid_t ia_gid; /* owner gid */
gpfs_ino_t ia_inode; /* file inode number */
gpfs_gen_t ia_gen; /* inode generation number */
short ia_nlink; /* number of links */
short ia_flags; /* flags (defined below) */
int ia_blocksize; /* preferred block size for io */
gpfs_mask_t ia_mask; /* initial attribute mask-not used*/
gpfs_off64_t ia_size; /* file size in bytes */
gpfs_off64_t ia_blocks; /*512 byte blocks of disk held by file*/
gpfs_timestruc_t ia_atime; /* time of last access */
gpfs_timestruc_t ia_mtime; /* time of last data modification */
gpfs_timestruc_t ia_ctime; /* time of last status change */
gpfs_dev_t ia_rdev; /* ID of device */
int ia_xperm; /*non-zero if file has extended acl*/
int ia_modsnapid; /*Internal snapshot ID indicating
the last time that the file was modified*/
unsigned int ia_filesetid; /* fileset ID */
unsigned int ia_datapoolid; /* storage pool ID for data */
} gpfs_iattr_t;
/* Define flags for inode attributes */
#define GPFS_IAFLAG_SNAPDIR 0x0001 /* (obsolete) */
#define GPFS_IAFLAG_USRQUOTA 0x0002 /*inode is a user quota file*/
#define GPFS_IAFLAG_GRPQUOTA 0x0004 /*inode is a group quota file*/
#define GPFS_IAFLAG_ERROR 0x0008 /* error reading inode */
/* Define flags for inode replication attributes */
#define GPFS_IAFLAG_REPLMETA 0x0200 /* metadata replication set */
#define GPFS_IAFLAG_REPLDATA 0x0400 /* data replication set */
#define GPFS_IAFLAG_EXPOSED 0x0800 /*may have data on
suspended disks*/
#define GPFS_IAFLAG_ILLREPLICATED 0x1000
/*maybe not properly replicated*/
#define GPFS_IAFLAG_UNBALANCED 0x2000
/*maybe not properly balanced*/
#define GPFS_IAFLAG_DATAUPDATEMISS 0x4000
/* has stale data blocks on unavailable disk */
#define GPFS_IAFLAG_METAUPDATEMISS 0x8000
/* has stale metadata on unavailable disk */
#define GPFS_IAFLAG_ILLPLACED 0x0100
/* may not be properly placed */
#define GPFS_IAFLAG_FILESET_ROOT 0x0010
/* root dir of a fileset */
#define GPFS_IAFLAG_NO_SNAP_RESTORE 0x0020
Chapter 9. GPFS programming interfaces 307