X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fllite%2Fdir.c;h=5db622e1164d818ef026ec7e821d9999fc1bb44c;hp=b77a8af73db86fc1f768da2f23a4f884cca7aa96;hb=bb60caa1c6e7c14c201916dc0423442d10c86a27;hpb=f269497ac7a730880e590eb9e8405f082522c5e0 diff --git a/lustre/llite/dir.c b/lustre/llite/dir.c index b77a8af..5db622e 100644 --- a/lustre/llite/dir.c +++ b/lustre/llite/dir.c @@ -444,23 +444,17 @@ static int ll_dir_setdirstripe(struct dentry *dparent, struct lmv_user_md *lump, !OBD_FAIL_CHECK(OBD_FAIL_LLITE_NO_CHECK_DEAD)) RETURN(-ENOENT); + /* MDS < 2.14 doesn't support 'crush' hash type, and cannot handle + * unknown hash if client doesn't set a valid one. switch to fnv_1a_64. + */ if (!(exp_connect_flags2(sbi->ll_md_exp) & OBD_CONNECT2_CRUSH)) { - if ((lump->lum_hash_type & LMV_HASH_TYPE_MASK) == - LMV_HASH_TYPE_CRUSH) { - /* if server doesn't support 'crush' hash type, - * switch to fnv_1a_64. - */ - lump->lum_hash_type &= ~LMV_HASH_TYPE_MASK; - lump->lum_hash_type |= LMV_HASH_TYPE_FNV_1A_64; - } else if ((lump->lum_hash_type & LMV_HASH_TYPE_MASK) == - LMV_HASH_TYPE_UNKNOWN) { - /* from 2.14 MDT will choose default hash type if client - * doesn't set a valid one, while old server doesn't - * handle it. - */ - lump->lum_hash_type &= ~LMV_HASH_TYPE_MASK; - lump->lum_hash_type |= LMV_HASH_TYPE_DEFAULT; - } + enum lmv_hash_type type = lump->lum_hash_type & + LMV_HASH_TYPE_MASK; + + if (type == LMV_HASH_TYPE_CRUSH || + type == LMV_HASH_TYPE_UNKNOWN) + lump->lum_hash_type = (lump->lum_hash_type ^ type) | + LMV_HASH_TYPE_FNV_1A_64; } if (unlikely(!lmv_user_magic_supported(cpu_to_le32(lump->lum_magic))))