diff options
| -rw-r--r-- | cmd/Makefile.am | 2 | ||||
| -rw-r--r-- | cmd/Makefile.in | 2 | ||||
| -rw-r--r-- | cmd/zvol_id/Makefile.am | 10 | ||||
| -rw-r--r-- | cmd/zvol_id/Makefile.in | 634 | ||||
| -rw-r--r-- | cmd/zvol_id/zvol_id_main.c | 90 | ||||
| -rwxr-xr-x | configure | 3 | ||||
| -rw-r--r-- | configure.ac | 1 | ||||
| -rw-r--r-- | etc/udev/rules.d/60-zvol.rules | 6 | ||||
| -rw-r--r-- | include/sys/fs/zfs.h | 6 | ||||
| -rw-r--r-- | module/zfs/zvol.c | 16 |
10 files changed, 761 insertions, 9 deletions
diff --git a/cmd/Makefile.am b/cmd/Makefile.am index 760854744..af03994ce 100644 --- a/cmd/Makefile.am +++ b/cmd/Makefile.am @@ -1 +1 @@ -SUBDIRS = zfs zpool zpool_id zpool_layout zdb zinject ztest zpios +SUBDIRS = zfs zpool zpool_id zpool_layout zdb zinject ztest zpios zvol_id diff --git a/cmd/Makefile.in b/cmd/Makefile.in index f82f9c544..2dcf6a659 100644 --- a/cmd/Makefile.in +++ b/cmd/Makefile.in @@ -292,7 +292,7 @@ target_vendor = @target_vendor@ top_build_prefix = @top_build_prefix@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ -SUBDIRS = zfs zpool zpool_id zpool_layout zdb zinject ztest zpios +SUBDIRS = zfs zpool zpool_id zpool_layout zdb zinject ztest zpios zvol_id all: all-recursive .SUFFIXES: diff --git a/cmd/zvol_id/Makefile.am b/cmd/zvol_id/Makefile.am new file mode 100644 index 000000000..dcdea58b9 --- /dev/null +++ b/cmd/zvol_id/Makefile.am @@ -0,0 +1,10 @@ +include $(top_srcdir)/config/Rules.am + +DEFAULT_INCLUDES += \ + -I$(top_srcdir)/include \ + -I$(top_srcdir)/lib/libspl/include + +bin_PROGRAMS = zvol_id + +zvol_id_SOURCES = \ + $(top_srcdir)/cmd/zvol_id/zvol_id_main.c diff --git a/cmd/zvol_id/Makefile.in b/cmd/zvol_id/Makefile.in new file mode 100644 index 000000000..0489034dc --- /dev/null +++ b/cmd/zvol_id/Makefile.in @@ -0,0 +1,634 @@ +# Makefile.in generated by automake 1.11.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +target_triplet = @target@ +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \ + $(top_srcdir)/config/Rules.am +bin_PROGRAMS = zvol_id$(EXEEXT) +subdir = cmd/zvol_id +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = \ + $(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \ + $(top_srcdir)/config/kernel-bdev-logical-size.m4 \ + $(top_srcdir)/config/kernel-bio-empty-barrier.m4 \ + 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a/cmd/zvol_id/zvol_id_main.c b/cmd/zvol_id/zvol_id_main.c new file mode 100644 index 000000000..2aa8abbdc --- /dev/null +++ b/cmd/zvol_id/zvol_id_main.c @@ -0,0 +1,90 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright (c) 2011, Fajar A. Nugraha. All rights reserved. + * Use is subject to license terms. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <unistd.h> +#include <linux/ioctl.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <sys/zfs_znode.h> +#include <sys/fs/zfs.h> + +int ioctl_get_msg(char *var, int fd) +{ + int error = 0; + char msg[ZFS_MAXNAMELEN]; + + error = ioctl(fd, BLKZNAME, msg); + if (error < 0) { + printf("ioctl_get_msg failed:%d\n", error); + return (error); + } + + snprintf(var, ZFS_MAXNAMELEN, "%s", msg); + return (error); +} + +int main(int argc, char **argv) +{ + int fd, error = 0; + char zvol_name[ZFS_MAXNAMELEN], zvol_name_part[ZFS_MAXNAMELEN]; + char *dev_name; + struct stat64 statbuf; + int dev_minor, dev_part; + + if (argc < 2) { + printf("Usage: %s /dev/zvol_device_node\n", argv[0]); + return (EINVAL); + } + + dev_name = argv[1]; + error = stat64(dev_name, &statbuf); + if (error != 0) { + printf("Unable to access device file: %s\n", dev_name); + return (errno); + } + + dev_minor = minor(statbuf.st_rdev); + dev_part = dev_minor % ZVOL_MINORS; + + fd = open(dev_name, O_RDONLY); + if (fd < 0) { + printf("Unable to open device file: %s\n", dev_name); + return (errno); + } + + ioctl_get_msg(zvol_name, fd); + if (dev_part > 0) + snprintf(zvol_name_part, ZFS_MAXNAMELEN, "%s-part%d", zvol_name, + dev_part); + else + snprintf(zvol_name_part, ZFS_MAXNAMELEN, "%s", zvol_name); + + printf("%s\n", zvol_name_part); + close(fd); + return (error); +} @@ -19739,7 +19739,7 @@ fi $as_echo "$enable_debug" >&6; } -ac_config_files="$ac_config_files Makefile etc/Makefile man/Makefile man/man8/Makefile lib/Makefile lib/libspl/Makefile lib/libspl/asm-generic/Makefile lib/libspl/asm-i386/Makefile lib/libspl/asm-x86_64/Makefile lib/libspl/include/Makefile lib/libspl/include/ia32/Makefile lib/libspl/include/ia32/sys/Makefile lib/libspl/include/rpc/Makefile lib/libspl/include/sys/Makefile lib/libspl/include/sys/sysevent/Makefile lib/libspl/include/sys/dktp/Makefile lib/libspl/include/util/Makefile lib/libavl/Makefile lib/libefi/Makefile lib/libnvpair/Makefile lib/libunicode/Makefile lib/libuutil/Makefile lib/libzpool/Makefile lib/libzfs/Makefile cmd/Makefile cmd/zdb/Makefile cmd/zfs/Makefile cmd/zinject/Makefile cmd/zpool/Makefile cmd/zpool_id/Makefile cmd/zpool_layout/Makefile cmd/ztest/Makefile cmd/zpios/Makefile module/Makefile module/avl/Makefile module/nvpair/Makefile module/unicode/Makefile module/zcommon/Makefile module/zfs/Makefile module/zpios/Makefile include/Makefile include/linux/Makefile include/sys/Makefile include/sys/fs/Makefile include/sys/fm/Makefile include/sys/fm/fs/Makefile scripts/Makefile scripts/zpios-profile/Makefile scripts/zpios-test/Makefile scripts/zpool-config/Makefile scripts/zpool-layout/Makefile scripts/common.sh zfs.spec zfs-modules.spec zfs-script-config.sh" +ac_config_files="$ac_config_files Makefile etc/Makefile man/Makefile man/man8/Makefile lib/Makefile lib/libspl/Makefile lib/libspl/asm-generic/Makefile lib/libspl/asm-i386/Makefile lib/libspl/asm-x86_64/Makefile lib/libspl/include/Makefile lib/libspl/include/ia32/Makefile lib/libspl/include/ia32/sys/Makefile lib/libspl/include/rpc/Makefile lib/libspl/include/sys/Makefile lib/libspl/include/sys/sysevent/Makefile lib/libspl/include/sys/dktp/Makefile lib/libspl/include/util/Makefile lib/libavl/Makefile lib/libefi/Makefile lib/libnvpair/Makefile lib/libunicode/Makefile lib/libuutil/Makefile lib/libzpool/Makefile lib/libzfs/Makefile cmd/Makefile cmd/zdb/Makefile cmd/zfs/Makefile cmd/zinject/Makefile cmd/zpool/Makefile cmd/zpool_id/Makefile cmd/zpool_layout/Makefile cmd/ztest/Makefile cmd/zpios/Makefile cmd/zvol_id/Makefile module/Makefile module/avl/Makefile module/nvpair/Makefile module/unicode/Makefile module/zcommon/Makefile module/zfs/Makefile module/zpios/Makefile include/Makefile include/linux/Makefile include/sys/Makefile include/sys/fs/Makefile include/sys/fm/Makefile include/sys/fm/fs/Makefile scripts/Makefile scripts/zpios-profile/Makefile scripts/zpios-test/Makefile scripts/zpool-config/Makefile scripts/zpool-layout/Makefile scripts/common.sh zfs.spec zfs-modules.spec zfs-script-config.sh" cat >confcache <<\_ACEOF @@ -20688,6 +20688,7 @@ do "cmd/zpool_layout/Makefile") CONFIG_FILES="$CONFIG_FILES cmd/zpool_layout/Makefile" ;; "cmd/ztest/Makefile") CONFIG_FILES="$CONFIG_FILES cmd/ztest/Makefile" ;; "cmd/zpios/Makefile") CONFIG_FILES="$CONFIG_FILES cmd/zpios/Makefile" ;; + "cmd/zvol_id/Makefile") CONFIG_FILES="$CONFIG_FILES cmd/zvol_id/Makefile" ;; "module/Makefile") CONFIG_FILES="$CONFIG_FILES module/Makefile" ;; "module/avl/Makefile") CONFIG_FILES="$CONFIG_FILES module/avl/Makefile" ;; "module/nvpair/Makefile") CONFIG_FILES="$CONFIG_FILES module/nvpair/Makefile" ;; diff --git a/configure.ac b/configure.ac index efebf71e9..abb3ff6ce 100644 --- a/configure.ac +++ b/configure.ac @@ -87,6 +87,7 @@ AC_CONFIG_FILES([ cmd/zpool_layout/Makefile cmd/ztest/Makefile cmd/zpios/Makefile + cmd/zvol_id/Makefile module/Makefile module/avl/Makefile module/nvpair/Makefile diff --git a/etc/udev/rules.d/60-zvol.rules b/etc/udev/rules.d/60-zvol.rules new file mode 100644 index 000000000..803d4260d --- /dev/null +++ b/etc/udev/rules.d/60-zvol.rules @@ -0,0 +1,6 @@ +# Peristent links for zvol +# +# persistent disk links: /dev/zvol/dataset_name +# also creates compatibilty symlink of /dev/dataset_name + +KERNEL=="zd*" SUBSYSTEM=="block" ACTION=="add" PROGRAM="/usr/bin/zvol_id $tempnode" SYMLINK+="zvol/%c %c" diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h index 25f256251..44aed1335 100644 --- a/include/sys/fs/zfs.h +++ b/include/sys/fs/zfs.h @@ -707,6 +707,7 @@ typedef struct ddt_histogram { #define ZVOL_MINOR_BITS 4 #define ZVOL_MINOR_MASK ((1U << ZVOL_MINOR_BITS) - 1) #define ZVOL_MINORS (1 << 4) +#define ZVOL_DEV_NAME "zd" #define ZVOL_PROP_NAME "name" #define ZVOL_DEFAULT_BLOCKSIZE 8192 @@ -782,6 +783,11 @@ typedef enum zfs_ioc { } zfs_ioc_t; /* + * zvol ioctl to get dataset name + */ +#define BLKZNAME _IO(0x12,125) + +/* * Internal SPA load state. Used by FMA diagnosis engine. */ typedef enum { diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c index e4487f9a6..65a924057 100644 --- a/module/zfs/zvol.c +++ b/module/zfs/zvol.c @@ -58,7 +58,7 @@ static char *zvol_tag = "zvol_tag"; * The in-core state of each volume. */ typedef struct zvol_state { - char zv_name[DISK_NAME_LEN]; /* name */ + char zv_name[MAXNAMELEN]; /* name */ uint64_t zv_volsize; /* advertised space */ uint64_t zv_volblocksize;/* volume block size */ objset_t *zv_objset; /* objset handle */ @@ -132,7 +132,7 @@ zvol_find_by_name(const char *name) ASSERT(MUTEX_HELD(&zvol_state_lock)); for (zv = list_head(&zvol_state_list); zv != NULL; zv = list_next(&zvol_state_list, zv)) { - if (!strncmp(zv->zv_name, name, DISK_NAME_LEN)) + if (!strncmp(zv->zv_name, name, MAXNAMELEN)) return zv; } @@ -895,6 +895,9 @@ zvol_ioctl(struct block_device *bdev, fmode_t mode, case BLKFLSBUF: zil_commit(zv->zv_zilog, ZVOL_OBJ); break; + case BLKZNAME: + error = copy_to_user((void *)arg, zv->zv_name, MAXNAMELEN); + break; default: error = -ENOTTY; @@ -1058,7 +1061,7 @@ zvol_alloc(dev_t dev, const char *name) zv->zv_queue->queuedata = zv; zv->zv_dev = dev; zv->zv_open_count = 0; - strlcpy(zv->zv_name, name, DISK_NAME_LEN); + strlcpy(zv->zv_name, name, MAXNAMELEN); mutex_init(&zv->zv_znode.z_range_lock, NULL, MUTEX_DEFAULT, NULL); avl_create(&zv->zv_znode.z_range_avl, zfs_range_compare, @@ -1073,7 +1076,8 @@ zvol_alloc(dev_t dev, const char *name) zv->zv_disk->fops = &zvol_ops; zv->zv_disk->private_data = zv; zv->zv_disk->queue = zv->zv_queue; - snprintf(zv->zv_disk->disk_name, DISK_NAME_LEN, "%s", name); + snprintf(zv->zv_disk->disk_name, DISK_NAME_LEN, "%s%d", + ZVOL_DEV_NAME, (dev & MINORMASK)); return zv; @@ -1274,7 +1278,7 @@ zvol_remove_minors(const char *pool) zvol_state_t *zv, *zv_next; char *str; - str = kmem_zalloc(DISK_NAME_LEN, KM_SLEEP); + str = kmem_zalloc(MAXNAMELEN, KM_SLEEP); if (pool) { (void) strncpy(str, pool, strlen(pool)); (void) strcat(str, "/"); @@ -1290,7 +1294,7 @@ zvol_remove_minors(const char *pool) } } mutex_exit(&zvol_state_lock); - kmem_free(str, DISK_NAME_LEN); + kmem_free(str, MAXNAMELEN); } int |