From: wang di Date: Tue, 16 Aug 2016 20:18:26 +0000 (-0400) Subject: staging: lustre: llite: fix "getdirstripe" to show stripe info X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6e23ea986bf550a8ba9f5fb797fead3c333665f9;p=linux-beck.git staging: lustre: llite: fix "getdirstripe" to show stripe info Fix "lfs getdirstripe", so it can show layout information of striped directory [root@testnode tests]# ../utils/lfs getdirstripe /mnt/lustre/test1 /mnt/lustre/test1 lmv_stripe_count: 2 lmv_stripe_offset: 0 mdtidx FID[seq:oid:ver] 0 [0x280000400:0x1:0x0] 1 [0x2c0000400:0x1:0x0] Signed-off-by: wang di Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3531 Reviewed-on: http://review.whamcloud.com/7228 Reviewed-by: Andreas Dilger Reviewed-by: John L. Hammond Reviewed-by: Alex Zhuravlev Reviewed-by: Oleg Drokin Signed-off-by: James Simmons Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h index a6120803c3ca..0ff30c62bdbf 100644 --- a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h +++ b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h @@ -1728,6 +1728,8 @@ lov_mds_md_max_stripe_count(size_t buf_size, __u32 lmm_magic) #define OBD_MD_FLDATAVERSION (0x0010000000000000ULL) /* iversion sum */ #define OBD_MD_FLRELEASED (0x0020000000000000ULL) /* file released */ +#define OBD_MD_DEFAULT_MEA (0x0040000000000000ULL) /* default MEA */ + #define OBD_MD_FLGETATTR (OBD_MD_FLID | OBD_MD_FLATIME | OBD_MD_FLMTIME | \ OBD_MD_FLCTIME | OBD_MD_FLSIZE | OBD_MD_FLBLKSZ | \ OBD_MD_FLMODE | OBD_MD_FLTYPE | OBD_MD_FLUID | \ @@ -2543,6 +2545,8 @@ union lmv_mds_md { struct lmv_user_md lmv_user_md; }; +void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm); + static inline ssize_t lmv_mds_md_size(int stripe_count, unsigned int lmm_magic) { ssize_t len = -EINVAL; diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_user.h b/drivers/staging/lustre/lustre/include/lustre/lustre_user.h index d496d0e5b894..26dbda017550 100644 --- a/drivers/staging/lustre/lustre/include/lustre/lustre_user.h +++ b/drivers/staging/lustre/lustre/include/lustre/lustre_user.h @@ -242,6 +242,7 @@ struct ost_id { #define LL_IOC_SET_LEASE _IOWR('f', 243, long) #define LL_IOC_GET_LEASE _IO('f', 244) #define LL_IOC_HSM_IMPORT _IOWR('f', 245, struct hsm_user_import) +#define LL_IOC_LMV_SET_DEFAULT_STRIPE _IOWR('f', 246, struct lmv_user_md) #define LL_STATFS_LMV 1 #define LL_STATFS_LOV 2 diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c index a0560b65eb45..5288750b36cc 100644 --- a/drivers/staging/lustre/lustre/llite/dir.c +++ b/drivers/staging/lustre/lustre/llite/dir.c @@ -749,6 +749,13 @@ int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, lum_size = sizeof(struct lov_user_md_v3); break; } + case LMV_USER_MAGIC: { + if (lump->lmm_magic != cpu_to_le32(LMV_USER_MAGIC)) + lustre_swab_lmv_user_md( + (struct lmv_user_md *)lump); + lum_size = sizeof(struct lmv_user_md); + break; + } default: { CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n", lump->lmm_magic, LOV_USER_MAGIC_V1, @@ -819,8 +826,16 @@ end: return rc; } -int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, - int *lmm_size, struct ptlrpc_request **request) +/** + * This function will be used to get default LOV/LMV/Default LMV + * @valid will be used to indicate which stripe it will retrieve + * OBD_MD_MEA LMV stripe EA + * OBD_MD_DEFAULT_MEA Default LMV stripe EA + * otherwise Default LOV EA. + * Each time, it can only retrieve 1 stripe EA + **/ +int ll_dir_getstripe(struct inode *inode, void **plmm, int *plmm_size, + struct ptlrpc_request **request, u64 valid) { struct ll_sb_info *sbi = ll_i2sbi(inode); struct mdt_body *body; @@ -829,7 +844,7 @@ int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, int rc, lmmsize; struct md_op_data *op_data; - rc = ll_get_default_mdsize(sbi, &lmmsize); + rc = ll_get_max_mdsize(sbi, &lmmsize); if (rc) return rc; @@ -860,6 +875,7 @@ int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize); + LASSERT(lmm); /* * This is coming from the MDS, so is probably in @@ -876,40 +892,48 @@ int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, if (cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm); break; + case LMV_USER_MAGIC: + if (cpu_to_le32(LMV_USER_MAGIC) != LMV_USER_MAGIC) + lustre_swab_lmv_user_md((struct lmv_user_md *)lmm); + break; default: CERROR("unknown magic: %lX\n", (unsigned long)lmm->lmm_magic); rc = -EPROTO; } out: - *lmmp = lmm; - *lmm_size = lmmsize; + *plmm = lmm; + *plmm_size = lmmsize; *request = req; return rc; } -/* - * Get MDT index for the inode. - */ -int ll_get_mdt_idx(struct inode *inode) +static int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, + const struct lu_fid *fid) { - struct ll_sb_info *sbi = ll_i2sbi(inode); struct md_op_data *op_data; - int rc, mdtidx; + int mdt_index, rc; - op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, - 0, LUSTRE_OPC_ANY, NULL); - if (IS_ERR(op_data)) - return PTR_ERR(op_data); + op_data = kzalloc(sizeof(*op_data), GFP_NOFS); + if (!op_data) + return -ENOMEM; op_data->op_flags |= MF_GET_MDT_IDX; + op_data->op_fid1 = *fid; rc = md_getattr(sbi->ll_md_exp, op_data, NULL); - mdtidx = op_data->op_mds; - ll_finish_md_op_data(op_data); - if (rc < 0) { - CDEBUG(D_INFO, "md_getattr_name: %d\n", rc); + mdt_index = op_data->op_mds; + kvfree(op_data); + if (rc < 0) return rc; - } - return mdtidx; + + return mdt_index; +} + +/* + * Get MDT index for the inode. + */ +int ll_get_mdt_idx(struct inode *inode) +{ + return ll_get_mdt_idx_by_fid(ll_i2sbi(inode), ll_inode2fid(inode)); } /** @@ -1391,6 +1415,22 @@ lmv_out_free: obd_ioctl_freedata(buf, len); return rc; } + case LL_IOC_LMV_SET_DEFAULT_STRIPE: { + struct lmv_user_md __user *ulump; + struct lmv_user_md lum; + int rc; + + ulump = (struct lmv_user_md __user *)arg; + if (copy_from_user(&lum, ulump, sizeof(lum))) + return -EFAULT; + + if (lum.lum_magic != LMV_USER_MAGIC) + return -EINVAL; + + rc = ll_dir_setstripe(inode, (struct lov_user_md *)&lum, 0); + + return rc; + } case LL_IOC_LOV_SETSTRIPE: { struct lov_user_md_v3 lumv3; struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3; @@ -1420,46 +1460,107 @@ lmv_out_free: return rc; } case LL_IOC_LMV_GETSTRIPE: { - struct lmv_user_md __user *lump = (void __user *)arg; + struct lmv_user_md __user *ulmv; struct lmv_user_md lum; - struct lmv_user_md *tmp; + struct ptlrpc_request *request = NULL; + struct lmv_user_md *tmp = NULL; + union lmv_mds_md *lmm = NULL; + u64 valid = 0; + int stripe_count; + int mdt_index; int lum_size; - int rc = 0; - int mdtindex; + int lmmsize; + int rc; + int i; - if (copy_from_user(&lum, lump, sizeof(struct lmv_user_md))) + ulmv = (struct lmv_user_md __user *)arg; + if (copy_from_user(&lum, ulmv, sizeof(*ulmv))) return -EFAULT; - if (lum.lum_magic != LMV_MAGIC_V1) + /* + * lum_magic will indicate which stripe the ioctl will like + * to get, LMV_MAGIC_V1 is for normal LMV stripe, LMV_USER_MAGIC + * is for default LMV stripe + */ + if (lum.lum_magic == LMV_MAGIC_V1) + valid |= OBD_MD_MEA; + else if (lum.lum_magic == LMV_USER_MAGIC) + valid |= OBD_MD_DEFAULT_MEA; + else return -EINVAL; - lum_size = lmv_user_md_size(1, LMV_MAGIC_V1); + rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, &request, + valid); + if (rc && rc != -ENODATA) + goto finish_req; + + /* Get default LMV EA */ + if (lum.lum_magic == LMV_USER_MAGIC) { + if (rc) + goto finish_req; + + if (lmmsize > sizeof(*ulmv)) { + rc = -EINVAL; + goto finish_req; + } + + if (copy_to_user(ulmv, lmm, lmmsize)) + rc = -EFAULT; + + goto finish_req; + } + + /* Get normal LMV EA */ + if (rc == -ENODATA) { + stripe_count = 1; + } else { + LASSERT(lmm); + stripe_count = lmv_mds_md_stripe_count_get(lmm); + } + + lum_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1); tmp = kzalloc(lum_size, GFP_NOFS); if (!tmp) { rc = -ENOMEM; - goto free_lmv; + goto finish_req; } - *tmp = lum; + tmp->lum_magic = LMV_MAGIC_V1; tmp->lum_stripe_count = 1; - mdtindex = ll_get_mdt_idx(inode); - if (mdtindex < 0) { + mdt_index = ll_get_mdt_idx(inode); + if (mdt_index < 0) { rc = -ENOMEM; - goto free_lmv; + goto out_tmp; + } + tmp->lum_stripe_offset = mdt_index; + tmp->lum_objects[0].lum_mds = mdt_index; + tmp->lum_objects[0].lum_fid = *ll_inode2fid(inode); + for (i = 1; i < stripe_count; i++) { + struct lmv_mds_md_v1 *lmm1; + + lmm1 = &lmm->lmv_md_v1; + mdt_index = ll_get_mdt_idx_by_fid(sbi, + &lmm1->lmv_stripe_fids[i]); + if (mdt_index < 0) { + rc = mdt_index; + goto out_tmp; + } + tmp->lum_objects[i].lum_mds = mdt_index; + tmp->lum_objects[i].lum_fid = lmm1->lmv_stripe_fids[i]; + tmp->lum_stripe_count++; } - tmp->lum_stripe_offset = mdtindex; - tmp->lum_objects[0].lum_mds = mdtindex; - memcpy(&tmp->lum_objects[0].lum_fid, ll_inode2fid(inode), - sizeof(struct lu_fid)); - if (copy_to_user((void __user *)arg, tmp, lum_size)) { + if (copy_to_user(ulmv, tmp, lum_size)) { rc = -EFAULT; - goto free_lmv; + goto out_tmp; } -free_lmv: +out_tmp: kfree(tmp); +finish_req: + ptlrpc_req_finished(request); return rc; } + case LL_IOC_LOV_SWAP_LAYOUTS: return -EPERM; case LL_IOC_OBD_STATFS: @@ -1484,7 +1585,8 @@ free_lmv: rc = ll_lov_getstripe_ea_info(inode, filename, &lmm, &lmmsize, &request); } else { - rc = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); + rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, + &request, 0); } if (request) { diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h index f3b85042f515..82c3a88c3331 100644 --- a/drivers/staging/lustre/lustre/llite/llite_internal.h +++ b/drivers/staging/lustre/lustre/llite/llite_internal.h @@ -728,8 +728,8 @@ int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename, struct ptlrpc_request **request); int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, int set_default); -int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, - int *lmm_size, struct ptlrpc_request **request); +int ll_dir_getstripe(struct inode *inode, void **lmmp, int *lmm_size, + struct ptlrpc_request **request, u64 valid); int ll_fsync(struct file *file, loff_t start, loff_t end, int data); int ll_merge_attr(const struct lu_env *env, struct inode *inode); int ll_fid2path(struct inode *inode, void __user *arg); diff --git a/drivers/staging/lustre/lustre/llite/xattr.c b/drivers/staging/lustre/lustre/llite/xattr.c index a02b80269b5c..aa0738be8b90 100644 --- a/drivers/staging/lustre/lustre/llite/xattr.c +++ b/drivers/staging/lustre/lustre/llite/xattr.c @@ -390,8 +390,8 @@ static int ll_xattr_get(const struct xattr_handler *handler, lsm = ccc_inode_lsm_get(inode); if (!lsm) { if (S_ISDIR(inode->i_mode)) { - rc = ll_dir_getstripe(inode, &lmm, - &lmmsize, &request); + rc = ll_dir_getstripe(inode, (void **)&lmm, + &lmmsize, &request, 0); } else { rc = -ENODATA; } @@ -491,7 +491,8 @@ ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size) if (!ll_i2info(inode)->lli_has_smd) rc2 = -1; } else if (S_ISDIR(inode->i_mode)) { - rc2 = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); + rc2 = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, + &request, 0); } if (rc2 < 0) { diff --git a/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c b/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c index 07e23d16abc7..6ddc9c732d5f 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c +++ b/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c @@ -1878,6 +1878,32 @@ void lustre_swab_lov_desc(struct lov_desc *ld) } EXPORT_SYMBOL(lustre_swab_lov_desc); +/* This structure is always in little-endian */ +static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1) +{ + int i; + + __swab32s(&lmm1->lmv_magic); + __swab32s(&lmm1->lmv_stripe_count); + __swab32s(&lmm1->lmv_master_mdt_index); + __swab32s(&lmm1->lmv_hash_type); + __swab32s(&lmm1->lmv_layout_version); + for (i = 0; i < lmm1->lmv_stripe_count; i++) + lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]); +} + +void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm) +{ + switch (lmm->lmv_magic) { + case LMV_MAGIC_V1: + lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1); + break; + default: + break; + } +} +EXPORT_SYMBOL(lustre_swab_lmv_mds_md); + void lustre_swab_lmv_user_md(struct lmv_user_md *lum) { __swab32s(&lum->lum_magic);