Changeset 8b51009 in mainline for uspace/srv/bd/hr/var.h

Timestamp:

2025-03-28T23:37:16Z (3 months ago)

Author:

Miroslav Cimerman <mc@…>

Children:

0437dd5

Parents:

7bfe468

git-author:

Miroslav Cimerman <mc@…> (2025-03-28 23:25:57)

git-committer:

Miroslav Cimerman <mc@…> (2025-03-28 23:37:16)

Message:

hr: auto assembly, refactor

Added automatic assembly (with hrctl -A). All disks or their partitions
are scanned for HelenRAID metadata and assembly is attempted.

Main volume list is now locked with RW lock. The volume list
manipulation functions are moved into util.c.

hr_{create,destroy}_vol_struct() are implemented for better reusability
and modularity.

Volume destroy/stop (hrctl -D) now returns EBUSY if someone has still
the volume open()-ed.

File:

• uspace/srv/bd/hr/var.h (modified) (4 diffs)

uspace/srv/bd/hr/var.h

@@ -42 +42 @@
 #include <fibril_synch.h>
 #include <hr.h>
+#include <stdatomic.h>
 
 #include "fge.h"
+#include "superblock.h"
 
 #define NAME            "hr"
@@ -50 +52 @@
 struct hr_volume;
 typedef struct hr_volume hr_volume_t;
+typedef struct hr_metadata hr_metadata_t;
 
 typedef struct hr_ops {
@@ -69 +72 @@
         hr_fpool_t      *fge;                   /* fibril pool */
 
+        uint32_t         metadata_version; /* XXX: yet unused */
+
+        hr_metadata_t   *in_mem_md; /* TODO: implement */
+
         /* invariants */
         size_t           extent_no;             /* number of extents */
         size_t           bsize;                 /* block size */
         uint64_t         nblocks;               /* no. of all usable blocks */
+        uint64_t         truncated_blkno;       /* blkno per extent */
         uint64_t         data_blkno;            /* no. of user usable blocks */
         uint64_t         data_offset;           /* user data offset in blocks */
@@ -91 +99 @@
         _Atomic bool     state_dirty;           /* dirty state */
 
-        /*
-         * XXX: unportable for 32-bit?
-         *
-         * Add macros for locking or atomic increment depending
-         * on the platform?
-         */
+        /* XXX: atomic_uint_least64_t? */
         _Atomic uint64_t rebuild_blk;           /* rebuild position */
+        _Atomic int      open_cnt;              /* open/close() counter */
         uint64_t         counter;               /* TODO: metadata syncing */
         hr_vol_status_t  status;                /* volume status */