Use udev to create /dev/zvol/[dataset_name] links

This commit allows zvols with names longer than 32 characters, which fixes issue on https://github.com/behlendorf/zfs/issues/#issue/102. Changes include: - use /dev/zd* device names for zvol, where * is the device minor (include/sys/fs/zfs.h, module/zfs/zvol.c). - add BLKZNAME ioctl to get dataset name from userland (include/sys/fs/zfs.h, module/zfs/zvol.c, cmd/zvol_id). - add udev rule to create /dev/zvol/[dataset_name] and the legacy /dev/[dataset_name] symlink. For partitions on zvol, it will create /dev/zvol/[dataset_name]-part* (etc/udev/rules.d/60-zvol.rules, cmd/zvol_id). Signed-off-by: Brian Behlendorf <[email protected]>
behlendorf · Feb 25, 2011 · 4c0d8e5 · 4c0d8e5
1 parent 61da501
commit 4c0d8e5
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diff --git 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
@@ -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
@@ -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
Original file line number	Diff line number	Diff line change
		@@ -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