From: James Simmons <jsimmons@infradead.org>
To: Andreas Dilger <adilger@whamcloud.com>,
Oleg Drokin <green@whamcloud.com>, NeilBrown <neilb@suse.de>
Cc: Lai Siyao <lai.siyao@whamcloud.com>,
Lustre Development List <lustre-devel@lists.lustre.org>
Subject: [lustre-devel] [PATCH 01/15] lustre: uapi: support fixed directory layout
Date: Sun, 22 Aug 2021 22:27:32 -0400 [thread overview]
Message-ID: <1629685666-4533-2-git-send-email-jsimmons@infradead.org> (raw)
In-Reply-To: <1629685666-4533-1-git-send-email-jsimmons@infradead.org>
From: Lai Siyao <lai.siyao@whamcloud.com>
User may not want directories split automatically in some cases:
*.directory migrated.
* directory restriped.
To support this, an LMV flag LMV_HASH_FLAG_FIXED is added, and it will
be set on migrated/restriped directories. NB, if directory is migrated
or restriped to a one-stripe directory, it won't be transformed into a
plain directory, because this flag needs to be kept.
WC-bug-id: https://jira.whamcloud.com/browse/LU-14459
Lustre-commit: 4c2514f483280137 ("LU-14459 mdt: support fixed directory layout")
Signed-off-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/43291
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
fs/lustre/ptlrpc/wiretest.c | 1 +
include/uapi/linux/lustre/lustre_user.h | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/fs/lustre/ptlrpc/wiretest.c b/fs/lustre/ptlrpc/wiretest.c
index 4301bd4..7d504bd 100644
--- a/fs/lustre/ptlrpc/wiretest.c
+++ b/fs/lustre/ptlrpc/wiretest.c
@@ -1778,6 +1778,7 @@ void lustre_assert_wire_constants(void)
BUILD_BUG_ON(LMV_MAGIC_V1 != 0x0CD20CD0);
BUILD_BUG_ON(LMV_MAGIC_STRIPE != 0x0CD40CD0);
BUILD_BUG_ON(LMV_HASH_TYPE_MASK != 0x0000ffff);
+ BUILD_BUG_ON(LMV_HASH_FLAG_FIXED != 0x02000000);
BUILD_BUG_ON(LMV_HASH_FLAG_MERGE != 0x04000000);
BUILD_BUG_ON(LMV_HASH_FLAG_SPLIT != 0x08000000);
BUILD_BUG_ON(LMV_HASH_FLAG_LOST_LMV != 0x10000000);
diff --git a/include/uapi/linux/lustre/lustre_user.h b/include/uapi/linux/lustre/lustre_user.h
index b317bbf..7fcc009 100644
--- a/include/uapi/linux/lustre/lustre_user.h
+++ b/include/uapi/linux/lustre/lustre_user.h
@@ -718,6 +718,9 @@ static inline bool lmv_is_known_hash_type(__u32 type)
(type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_CRUSH;
}
+/* fixed layout, such directories won't split automatically */
+/* NB, update LMV_HASH_FLAG_KNOWN when adding new flag */
+#define LMV_HASH_FLAG_FIXED 0x02000000
#define LMV_HASH_FLAG_MERGE 0x04000000
#define LMV_HASH_FLAG_SPLIT 0x08000000
@@ -733,6 +736,8 @@ static inline bool lmv_is_known_hash_type(__u32 type)
#define LMV_HASH_FLAG_LAYOUT_CHANGE \
(LMV_HASH_FLAG_MIGRATION | LMV_HASH_FLAG_SPLIT | LMV_HASH_FLAG_MERGE)
+#define LMV_HASH_FLAG_KNOWN 0xfe000000
+
/* both SPLIT and MIGRATION are set for directory split */
static inline bool lmv_hash_is_splitting(__u32 hash)
{
--
1.8.3.1
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next prev parent reply other threads:[~2021-08-23 2:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-23 2:27 [lustre-devel] [PATCH 00/15] lustre: sync to OpenSFS as of Aug 22, 2021 James Simmons
2021-08-23 2:27 ` James Simmons [this message]
2021-08-23 2:27 ` [lustre-devel] [PATCH 02/15] lustre: pcc: add LCM_FL_PCC_RDONLY layout flag James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 03/15] lustre: mdt: implement fallocate in MDC/MDT James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 04/15] lnet: Reflect ni_fatal in NI status James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 05/15] lustre: obdclass: reintroduce lu_ref James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 06/15] lnet: keep in insync to change due to GPU Direct Support James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 07/15] lustre: osc: Support RDMA only pages James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 08/15] lustre: mgc: rework mgc_apply_recover_logs() for gcc10 James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 09/15] lnet: socklnd: allow dynamic setting of conns_per_peer James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 10/15] lnet: Provide kernel API for adding peers James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 11/15] lustre: obdclass: Add peer/peer NI when processing llog James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 12/15] lnet: peer state to lock primary nid James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 13/15] lustre: llite: Proved an abstraction for AS_EXITING James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 14/15] lnet: socklnd: set conns_per_peer based on link speed James Simmons
2021-08-23 2:27 ` [lustre-devel] [PATCH 15/15] lustre: update version to 2.14.54 James Simmons
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