[lustre-devel] [PATCH 23/26] lustre: mdc: set default LMV on ROOT
James Simmons
jsimmons at infradead.org
Mon Aug 2 12:50:46 PDT 2021
From: Lai Siyao <lai.siyao at whamcloud.com>
To balance MDT usage, set default LMV on ROOT if it's not set. The
default stripe offset is "-1", and default stripe count is "1". Then
directory created by "mkdir" under ROOT will be scattered on all MDTs
by usage.
WC-bug-id: https://jira.whamcloud.com/browse/LU-13417
Lustre-commit: 3e04b0fd6c3dd363 ("LU-13417 mdd: set default LMV on ROOT")
Signed-off-by: Lai Siyao <lai.siyao at whamcloud.com>
Signed-off-by: Andreas Dilger <adilger at whamcloud.com>
Signed-off-by: Hongchao Zhang <hongchao at whamcloud.com>
Reviewed-on: https://review.whamcloud.com/38553
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
fs/lustre/mdc/mdc_request.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/fs/lustre/mdc/mdc_request.c b/fs/lustre/mdc/mdc_request.c
index 1fb9c46..8b94f6c 100644
--- a/fs/lustre/mdc/mdc_request.c
+++ b/fs/lustre/mdc/mdc_request.c
@@ -557,6 +557,13 @@ static int mdc_get_lustre_md(struct obd_export *exp, struct req_capsule *pill,
goto out;
}
+ if (md_exp->exp_obd->obd_type->typ_lu == &mdc_device_type) {
+ CERROR("%s: no LMV, upgrading from old version?\n",
+ md_exp->exp_obd->obd_name);
+ rc = 0;
+ goto out_acl;
+ }
+
if (md->body->mbo_valid & OBD_MD_MEA) {
lmv_size = md->body->mbo_eadatasize;
if (!lmv_size) {
@@ -618,6 +625,7 @@ static int mdc_get_lustre_md(struct obd_export *exp, struct req_capsule *pill,
}
rc = 0;
+out_acl:
/* for ACL, it's possible that FLACL is set but aclsize is zero.
* only when aclsize != 0 there's an actual segment for ACL
* in reply buffer.
--
1.8.3.1
More information about the lustre-devel
mailing list