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24 * Copyright (c) 2012 Whamcloud, Inc.
25 * Use is subject to license terms.
28 #include "lquota_internal.h"
30 #ifndef _QSD_INTERNAL_H
31 #define _QSD_INTERNAL_H
36 * A QSD instance implements quota enforcement support for a given OSD.
37 * The instance can be created via qsd_init() and then freed with qsd_fini().
38 * This structure gathers all quota parameters and pointers to on-disk indexes
39 * required on quota slave to:
40 * i. acquire/release quota space from the QMT;
41 * ii. allocate this quota space to local requests.
44 /* name of service which created this qsd instance */
45 char qsd_svname[MAX_OBD_NAME];
47 /* pool ID is always 0 for now */
50 /* dt_device associated with this qsd instance */
51 struct dt_device *qsd_dev;
53 /* procfs directory where information related to the underlying slaves
55 cfs_proc_dir_entry_t *qsd_proc;
57 /* on-disk directory where to store index files for this qsd instance */
58 struct dt_object *qsd_root;
60 /* We create 2 quota slave instances:
61 * - one for user quota
62 * - one for group quota
64 * This will have to be revisited if new quota types are added in the
65 * future. For the time being, we can just use an array. */
66 struct qsd_qtype_info *qsd_type_array[MAXQUOTAS];
68 unsigned long qsd_is_md:1, /* managing quota for mdt */
69 qsd_stopping:1; /* qsd_instance is stopping */
73 * Per-type quota information.
74 * Quota slave instance for a specific quota type. The qsd instance has one such
75 * structure for each quota type (i.e. user & group).
77 struct qsd_qtype_info {
78 /* quota type, either USRQUOTA or GRPQUOTA
79 * immutable after creation. */
82 /* Global index FID to use for this quota type */
83 struct lu_fid qqi_fid;
85 /* back pointer to qsd device
86 * immutable after creation. */
87 struct qsd_instance *qqi_qsd;
89 /* Local index files storing quota settings for this quota type */
90 struct dt_object *qqi_acct_obj; /* accounting object */
91 struct dt_object *qqi_slv_obj; /* slave index copy */
92 struct dt_object *qqi_glb_obj; /* global index copy */
94 /* Current object versions */
95 __u64 qqi_slv_ver; /* slave index version */
96 __u64 qqi_glb_ver; /* global index version */
99 #define QSD_RES_TYPE(qsd) ((qsd)->qsd_is_md ? LQUOTA_RES_MD : LQUOTA_RES_DT)
100 #endif /* _QSD_INTERNAL_H */