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* Linux 2.6.36 compat, use REQ_FAILFAST_MASK and remove pre-2.6.36 supportTim Chase2015-05-112-19/+2
| | | | | | | | | | | | | | | | | Commit f4af6bb783b0b7f2a6075cb1c74c225db8a157b2 which added support for REQ_FAILFAST_MASK but the new autoconf test didn't use the same preprocessor macro name as the code did. The effect is that FAILFAST mode has not been enabled for ZoL in any post-2.6.35 kernel. Retire the HAVE_BIO_RW_FAILFAST interface used in pre-2.6.28 kernels. Raise an error condition if the FAILFAST interface can't be detected. Signed-off-by: Tim Chase <[email protected] Signed-off-by: Brian Behlendorf <[email protected]> Closes #3386
* Add RHEL style kmod packagesBrian Behlendorf2015-03-271-1/+1
| | | | | | | | | | | | | | | Provide a Redhat specific zfs-kmod.spec file which uses the old style kmods (not kmods2) packaging. By using the provided kmodtool script packages can be built which support weak modules. This allows for the kernel to be updated without having to rebuild the ZFS kernel modules. Packages for RHEL/Centos/SL/TOSS which use this spec file can by built as follows: $ ./configure --with-spec=redhat $ make rpms Signed-off-by: Brian Behlendorf <[email protected]>
* Remove rpm/fedora directoryBrian Behlendorf2015-03-271-1/+1
| | | | | | | | | Originally it was thought that custom spec files might be required for Fedora. Happily that has turns out not to be the case. Since this directory just contains symlinks to the generic spec files it can be removed. Signed-off-by: Brian Behlendorf <[email protected]>
* Linux 4.0 compat: bdi_setup_and_register() __must_checkBill McGonigle2015-03-161-2/+4
| | | | | | | | | | | Explicitly disable the unused by variable warnings by setting __attribute__((unused)) for bdi_setup_and_register(). This is required because the function is defined with the __must_check attribute. Signed-off-by: Bill McGonigle <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #3141
* Linux 4.0 compat: bdi_setup_and_register()Brian Behlendorf2015-03-033-33/+25
| | | | | | | | | | | | | | | | | | | | The 'capabilities' argument which was passed to bdi_setup_and_register() has been removed. File systems should no longer pass BDI_CAP_MAP_COPY. For our purposes this means there are now three different interfaces which must be handled. A zpl_bdi_setup_and_register() wrapper function has been introduced to provide a single interface to the ZPL code. * 2.6.32 - 2.6.33, bdi_setup_and_register() is not exported. * 2.6.34 - 3.19, bdi_setup_and_register() takes 3 arguments. * 4.0 - x.y, bdi_setup_and_register() takes 2 arguments. I've also taken this opportunity to remove HAVE_BDI because kernels older then 2.6.32 are no longer supported. All kernels newer than this will have one of the above interfaces. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #3128
* Linux 3.19 compat: file_inode was addedJörg Thalheim2015-02-102-0/+20
| | | | | | | | | struct access f->f_dentry->d_inode was replaced by accessor function file_inode(f) Signed-off-by: Joerg Thalheim <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #3084
* Don't use AC_LANG_SOURCE for conftest.h sourceNed Bass2015-01-061-1/+1
| | | | | | | | | | | | | | | Using AC_LANG_SOURCE with some versions of autoconf is problematic if the given source is to be written to a header file. Such versions assume the contents are to be written to conftest.c and generate shell code to that effect. The contents of the test program to detect support for Linux tracepoints were consequently malformed (containing the source for conftest.h) so the build system incorrectly disabled tracepoints support. Fix this in ZFS_LINUX_TRY_COMPILE_HEADER by passing the header source directly to ZFS_LINUX_COMPILE_IFELSE. Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2953
* Swap DTRACE_PROBE* with Linux tracepointsPrakash Surya2014-11-172-4/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch leverages Linux tracepoints from within the ZFS on Linux code base. It also refactors the debug code to bring it back in sync with Illumos. The information exported via tracepoints can be used for a variety of reasons (e.g. debugging, tuning, general exploration/understanding, etc). It is advantageous to use Linux tracepoints as the mechanism to export this kind of information (as opposed to something else) for a number of reasons: * A number of external tools can make use of our tracepoints "automatically" (e.g. perf, systemtap) * Tracepoints are designed to be extremely cheap when disabled * It's one of the "accepted" ways to export this kind of information; many other kernel subsystems use tracepoints too. Unfortunately, though, there are a few caveats as well: * Linux tracepoints appear to only be available to GPL licensed modules due to the way certain kernel functions are exported. Thus, to actually make use of the tracepoints introduced by this patch, one might have to patch and re-compile the kernel; exporting the necessary functions to non-GPL modules. * Prior to upstream kernel version v3.14-rc6-30-g66cc69e, Linux tracepoints are not available for unsigned kernel modules (tracepoints will get disabled due to the module's 'F' taint). Thus, one either has to sign the zfs kernel module prior to loading it, or use a kernel versioned v3.14-rc6-30-g66cc69e or newer. Assuming the above two requirements are satisfied, lets look at an example of how this patch can be used and what information it exposes (all commands run as 'root'): # list all zfs tracepoints available $ ls /sys/kernel/debug/tracing/events/zfs enable filter zfs_arc__delete zfs_arc__evict zfs_arc__hit zfs_arc__miss zfs_l2arc__evict zfs_l2arc__hit zfs_l2arc__iodone zfs_l2arc__miss zfs_l2arc__read zfs_l2arc__write zfs_new_state__mfu zfs_new_state__mru # enable all zfs tracepoints, clear the tracepoint ring buffer $ echo 1 > /sys/kernel/debug/tracing/events/zfs/enable $ echo 0 > /sys/kernel/debug/tracing/trace # import zpool called 'tank', inspect tracepoint data (each line was # truncated, they're too long for a commit message otherwise) $ zpool import tank $ cat /sys/kernel/debug/tracing/trace | head -n35 # tracer: nop # # entries-in-buffer/entries-written: 1219/1219 #P:8 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | lt-zpool-30132 [003] .... 91344.200050: zfs_arc__miss: hdr... z_rd_int/0-30156 [003] .... 91344.200611: zfs_new_state__mru... lt-zpool-30132 [003] .... 91344.201173: zfs_arc__miss: hdr... z_rd_int/1-30157 [003] .... 91344.201756: zfs_new_state__mru... lt-zpool-30132 [003] .... 91344.201795: zfs_arc__miss: hdr... z_rd_int/2-30158 [003] .... 91344.202099: zfs_new_state__mru... lt-zpool-30132 [003] .... 91344.202126: zfs_arc__hit: hdr ... lt-zpool-30132 [003] .... 91344.202130: zfs_arc__hit: hdr ... lt-zpool-30132 [003] .... 91344.202134: zfs_arc__hit: hdr ... lt-zpool-30132 [003] .... 91344.202146: zfs_arc__miss: hdr... z_rd_int/3-30159 [003] .... 91344.202457: zfs_new_state__mru... lt-zpool-30132 [003] .... 91344.202484: zfs_arc__miss: hdr... z_rd_int/4-30160 [003] .... 91344.202866: zfs_new_state__mru... lt-zpool-30132 [003] .... 91344.202891: zfs_arc__hit: hdr ... lt-zpool-30132 [001] .... 91344.203034: zfs_arc__miss: hdr... z_rd_iss/1-30149 [001] .... 91344.203749: zfs_new_state__mru... lt-zpool-30132 [001] .... 91344.203789: zfs_arc__hit: hdr ... lt-zpool-30132 [001] .... 91344.203878: zfs_arc__miss: hdr... z_rd_iss/3-30151 [001] .... 91344.204315: zfs_new_state__mru... lt-zpool-30132 [001] .... 91344.204332: zfs_arc__hit: hdr ... lt-zpool-30132 [001] .... 91344.204337: zfs_arc__hit: hdr ... lt-zpool-30132 [001] .... 91344.204352: zfs_arc__hit: hdr ... lt-zpool-30132 [001] .... 91344.204356: zfs_arc__hit: hdr ... lt-zpool-30132 [001] .... 91344.204360: zfs_arc__hit: hdr ... To highlight the kind of detailed information that is being exported using this infrastructure, I've taken the first tracepoint line from the output above and reformatted it such that it fits in 80 columns: lt-zpool-30132 [003] .... 91344.200050: zfs_arc__miss: hdr { dva 0x1:0x40082 birth 15491 cksum0 0x163edbff3a flags 0x640 datacnt 1 type 1 size 2048 spa 3133524293419867460 state_type 0 access 0 mru_hits 0 mru_ghost_hits 0 mfu_hits 0 mfu_ghost_hits 0 l2_hits 0 refcount 1 } bp { dva0 0x1:0x40082 dva1 0x1:0x3000e5 dva2 0x1:0x5a006e cksum 0x163edbff3a:0x75af30b3dd6:0x1499263ff5f2b:0x288bd118815e00 lsize 2048 } zb { objset 0 object 0 level -1 blkid 0 } For the specific tracepoint shown here, 'zfs_arc__miss', data is exported detailing the arc_buf_hdr_t (hdr), blkptr_t (bp), and zbookmark_t (zb) that caused the ARC miss (down to the exact DVA!). This kind of precise and detailed information can be extremely valuable when trying to answer certain kinds of questions. For anybody unfamiliar but looking to build on this, I found the XFS source code along with the following three web links to be extremely helpful: * http://lwn.net/Articles/379903/ * http://lwn.net/Articles/381064/ * http://lwn.net/Articles/383362/ I should also node the more "boring" aspects of this patch: * The ZFS_LINUX_COMPILE_IFELSE autoconf macro was modified to support a sixth paramter. This parameter is used to populate the contents of the new conftest.h file. If no sixth parameter is provided, conftest.h will be empty. * The ZFS_LINUX_TRY_COMPILE_HEADER autoconf macro was introduced. This macro is nearly identical to the ZFS_LINUX_TRY_COMPILE macro, except it has support for a fifth option that is then passed as the sixth parameter to ZFS_LINUX_COMPILE_IFELSE. These autoconf changes were needed to test the availability of the Linux tracepoint macros. Due to the odd nature of the Linux tracepoint macro API, a separate ".h" must be created (the path and filename is used internally by the kernel's define_trace.h file). * The HAVE_DECLARE_EVENT_CLASS autoconf macro was introduced. This is to determine if we can safely enable the Linux tracepoint functionality. We need to selectively disable the tracepoint code due to the kernel exporting certain functions as GPL only. Without this check, the build process will fail at link time. In addition, the SET_ERROR macro was modified into a tracepoint as well. To do this, the 'sdt.h' file was moved into the 'include/sys' directory and now contains a userspace portion and a kernel space portion. The dprintf and zfs_dbgmsg* interfaces are now implemented as tracepoint as well. Signed-off-by: Prakash Surya <[email protected]> Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* Add config/compile to config/.gitignoreMarcel Wysocki2014-10-311-0/+1
| | | | | | | | | | | | This file may be added by automake and therefore should be added to config/.gitignore. For the full list of possible auxiliary programs see the full automake documentation. http://www.gnu.org/software/automake/manual/automake.html#Auxiliary-Programs Signed-off-by: Marcel Wysocki <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2848
* Make systemd-modules-load.service file directory configurableRichard Yao2014-10-281-1/+7
| | | | | | | | | | | | | | | | | | | | | Installing outside of the prefix is not permissible under Gentoo Prefix. The package manager will cause the installation process to fail if/when it sees this. We could handle this by disabling systemd support on prefix because systemd does not check these paths, but the Gentoo Council decided that small files such as these should be installed. That means disabling systemd support on prefix is not an acceptable workaround. As a consequence, we need some way of control the directory into which these files are installed. Making this configurable increases our compliance with the freedesktop.org specification, which allows these files to be installed into /etc/modules-load.d: http://www.freedesktop.org/software/systemd/man/modules-load.d.html Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2641
* Make directory into which mount.zfs is installed configurableRichard Yao2014-10-282-0/+9
| | | | | | | | | | | Installing outside of the prefix is not permissible under Gentoo Prefix. The package manager will cause the installation process to fail if/when it sees this. I could script a workaround inside the ebuild, but it seemed to make more sense to make this more configurable. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2641
* Search /usr/local/src for SPL Object DirectoryRichard Yao2014-10-281-4/+10
| | | | | | | | | | Since we changed the default location for the kernel headers to respect --prefix in the SPL, we must search that location to prevent user builds from breaking. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2641
* Make license compatibility checks consistentBrian Behlendorf2014-10-175-12/+18
| | | | | | | | Apply the license specified in the META file to ensure the compatibility checks are all performed consistently. Signed-off-by: Brian Behlendorf <[email protected]> Issue #2757
* Retire HAVE_IOCTL_* configure checksBrian Behlendorf2014-08-282-36/+0
| | | | | | | | | | | The HAVE_IOCTL_* configure checks were originally added for compatibility with an ancient version of glibc. This support and additional complexity is no longer needed and is therefore being removed. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Turbo Fredriksson <[email protected]> Closes #585
* Revert "Disable GCCs aggressive loop optimization"Brian Behlendorf2014-07-224-23/+0
| | | | | | | | This reverts commit 0f62f3f9abc4bfa0bcafee9bfa3d55e91dcb371d. Signed-off-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2010
* Accept udev and dracut paths specified by ./configureTurbo Fredriksson2014-06-113-7/+36
| | | | | | | | | | | | | | | | | | | | | | There are two common locations where udev and dracut components are commonly installed. When building packages using the 'make rpm|deb' targets check those common locations and pass them to rpmbuild. For non-standard configurations these values can be provided by the the following configure options: --with-udevdir=DIR install udev helpers [default=check] --with-udevruledir=DIR install udev rules [[UDEVDIR/rules.d]] --with-dracutdir=DIR install dracut helpers [default=check] When rebuilding using the source packages the per-distribution default values specified in the spec file will be used. This is the preferred way to build packages for a distribution but the ability to override the defaults is provided as a convenience. Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2310 Closes #1680
* Set LANG to a reasonable default (C)Turbo Fredriksson2014-06-101-2/+2
| | | | | | | | | Set LANG=C before calling 'rpmbuild' to avoid rpmbuild failing on the translated date string in the changelog. Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes: zfsonlinux/spl#306
* Accept kernel source dir(s) specified by ./configureTurbo Fredriksson2014-06-051-1/+1
| | | | | | | | | | This adds ability to set the location of the kernel via defines when building from the spec files. This is useful when building against a kernel installed in a non-standard location. Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1874
* Move the libraries into separate packagesTurbo Fredriksson2014-06-021-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From day one the various ZFS libraries should have been placed in their own sub-packages. Primarily this allows for multiple major versions of the libraries to be concurrently installed. It also facilitates a smaller build environment by minimizing the required dependencies. The specific changes required to split the libraries from the utilities are as follows: * libzpool2, libnvpair1, libuutil1, and libzfs2 packages were added and contain the versioned shared libraries. The Fedora packaging guidelines discourage providing static libraries so they are not included in the packages. http://fedoraproject.org/wiki/Packaging:Guidelines#Packaging_Static_Libraries * The zfs-devel package was renamed libzfs2-devel and the new package obsoletes the old zfs-devel package. This package includes all the required headers for the libzpool2, libnvpair1, libuutil1, and libzfs2 libraries and their respective unversioned shared libraries. This package should eventually be split in to individual lib*-devel packages but it will still take some work to cleanly separate them. Therefore the libzfs2-devel package provides the expected lib*-devel packages so the all proper dependencies can still be created. http://fedoraproject.org/wiki/Packaging:Guidelines#Devel_Packages * Moved '/sbin/ldconfig' execution from the zfs packge to each of the new library packages as described by the packaging guidelines. http://fedoraproject.org/wiki/Packaging:Guidelines#Shared_Libraries * The /usr/share/doc/ files were moved in to the libzfs2-devel package. * Updated config/deb.am to be aware of the packaging changes. This ensures that 'deb-utils' make target converts all the resulting packages generated by the 'rpm-utils' target. Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes: #2329 Closes: #2341 Issue: #2145
* Restrict release number to META versionBrian Behlendorf2014-05-291-1/+1
| | | | | | | | | | | When creating packages in a git repository the release number can be automatically set by 'git describe'. This normally works well but if your repository has newer tags which match the form NAME-VERSION* the release may be incorrectly calculated. To prevent this the match patten has been restricted to the contents of the META file, NAME-VERSION. Signed-off-by: Brian Behlendorf <[email protected]>
* Refactor inode_owner_or_capable() autotools checkRichard Yao2014-05-012-19/+36
| | | | | | | | | | | We need inode_owner_or_capable() for ZFS file attributes in addition to xattrs, so it should go into its own file. This moves it into its own file and changes it to be more comprehensive. It will now fail if no known good API is detected. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1691
* Linux 3.14 compat: rq_for_each_segment in dmu_req_copyChunwei Chen2014-04-101-1/+25
| | | | | | | | | | rq_for_each_segment changed from taking bio_vec * to taking bio_vec. We provide rq_for_each_segment4 which takes both. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2124
* Linux 3.14 compat: Immutable biovec changes in vdev_disk.cChunwei Chen2014-04-102-0/+21
| | | | | | | | | | bi_sector, bi_size and bi_idx are moved from bio to bio->bi_iter. This patch creates BIO_BI_*(bio) macros to hide the differences. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2124
* Linux 3.14 compat: posix_acl_{create,chmod}Chunwei Chen2014-04-101-0/+16
| | | | | | | | | posix_acl_{create,chmod} is changed to __posix_acl_{create_chmod} Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2124
* Replace check for _POSIX_MEMLOCK w/ HAVE_MLOCKALLChris Dunlap2014-04-021-0/+3
| | | | | | | | | | | | | | | | | | | zed supports a '-M' cmdline opt to lock all pages in memory via mlockall(). The _POSIX_MEMLOCK define is checked to determine whether this function is supported. The current test assumes mlockall() is supported if _POSIX_MEMLOCK is non-zero. However, this test is insufficient according to mlock(2) and sysconf(3). If _POSIX_MEMLOCK is -1, mlockall() is not supported; but if _POSIX_MEMLOCK is 0, availability must be checked at runtime. This commit adds an autoconf check for mlockall() to user.m4. The zed code block for mlockall() is now guarded with a test for HAVE_MLOCKALL. If defined, mlockall() will be called and its runtime availability checked via its return value. Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2
* Add defs for makefile installation dir varsChris Dunlap2014-03-313-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add macro definitions to AM_CPPFLAGS to propagate makefile installation directory variables for libexecdir, runstatedir, sbindir, and sysconfdir. https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Installation-Directory-Variables.html A corollary is that you should not use these variables except in makefiles. For instance, instead of trying to evaluate datadir in configure and hard-coding it in makefiles using e.g., 'AC_DEFINE_UNQUOTED([DATADIR], ["$datadir"], [Data directory.])', you should add -DDATADIR='$(datadir)' to your makefile's definition of CPPFLAGS (AM_CPPFLAGS if you are also using Automake). The runstatedir directory is for "installing data files which the programs modify while they run, that pertain to one specific machine, and which need not persist longer than the execution of the program". https://www.gnu.org/prep/standards/html_node/Directory-Variables.html It will be defined by autoconf 2.70 or later, and default to "$(localstatedir)/run". http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commit;h=a197431414088a417b407b9b20583b2e8f7363bd Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2
* Linux 3.13 compat: Handle __must_check bdi_setup_and_registerRichard Yao2014-03-241-2/+3
| | | | | | | | | | | | | | | torvalds/linux@8077c0d983ab276ec5f2700df56a64d671781905 added a __must_check to the bdi_setup_and_register(), which caused our autotools check to break. zfsonlinux/zfs@729210564a5325e190fc4fba22bf17bacf957ace was intended to correct that, but it depended on -Wno-unused-result, which is unrecognized in older GCC versions. That commit has been reverted in favor of a solution that does not require -Wno-unused-result. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2102 Closes #2135
* Revert "Properly ignore bdi_setup_and_register return value"Richard Yao2014-03-241-4/+1
| | | | | | | | | | Older GCC versions do not obey -Wno-unused-result. This reverts commit 729210564a5325e190fc4fba22bf17bacf957ace in favor of a solution that does not require -Wno-unused-result. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1906
* config: compile test rather than run testChunwei Chen2014-03-203-3/+3
| | | | | | | | | | When testing compiler flags, we only need to do compile test. Otherwise, configure will fail with "configure: error: cannot run test program while cross compiling" when cross compiling. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2191
* Add systemd unit files for ZFS startupRalf Ertzinger2014-02-053-0/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds systemd unit files replacing the functionality offered by the SysV init script found in etc/init.d. It has been developed and tested on Fedora 19, Fedora 20 and openSuSE 13.1. Four unit files and one target are offered. zfs-import-cache.service: Import pools from /etc/zfs/zpool.cache. This unit will wait for udev to settle. zfs-import-scan.service: Import pools by scanning /dev/disk/by-id for zvols. This unit will only run if /etc/zfs/zpool.cache is not present. This unit will wait for udev to settle zfs-mount.service: Mount ZFS native filesystems. It contains a dependency to be loaded before local-fs.target. zfs-share.service: Share NFS/SMB filesystems. This unit contains a dependency that will cause it to be restarted whenever the smb or nfs-server unit is restarted, restoring the shares added. zfs.target: This target pulls in the other units in order to start ZFS. It's the only unit that can be enabled/disabled, all other services are static and pulled in by dependencies. It will honour zfs=off and zfs=no options on the kernel command line. Signed-off-by: Brian Behlendorf <[email protected]> Closes #2108
* Disable GCCs aggressive loop optimizationBrian Behlendorf2014-01-144-2/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC >+ 4.8's aggressive loop optimization breaks some of the iterators over the dn_blkptr[] pseudo-array in dnode_phys. Since dn_blkptr[] is defined as a single-element array, GCC believes an iterator can only access index 0 and will unroll the loop into a single iteration. One way to resolve the issue would be to cast the array to a pointer and fix all the iterators that might break. The only loop where it is known to cause a problem is this loop in dmu_objset_write_ready(): for (i = 0; i < dnp->dn_nblkptr; i++) bp->blk_fill += dnp->dn_blkptr[i].blk_fill; In the common case where dn_nblkptr is 3, the loop is only executed a single time and "i" is equal to 1 following the loop. The specific breakage caused by this problem is that the blk_fill of root block pointers wouldn't be set properly when more than one blkptr is in use (when no indrect blocks are needed). The simple reproducing sequence is: zpool create tank /tank.img zdb -ddddd tank 0 Notice that "fill=31", however, there are two L0 indirect blocks with "F=31" and "F=5". The fill count should be 36 rather than 31. This problem causes an assert to be hit in a simple "zdb tank" when built with --enable-debug. However, this approach was not taken because we need to be absolutely sure we catch all instances of this unwanted optimization. Therefore, the build system has been updated to detect if GCC supports the aggressive loop optimization. If it does the optimization will be explicitly disabled using the -fno-aggressive-loop-optimization option. Original-fix-by: Tim Chase <[email protected]> Signed-off-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2010 Closes #2051
* Add full SELinux supportMatthew Thode2013-12-192-37/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Four new dataset properties have been added to support SELinux. They are 'context', 'fscontext', 'defcontext' and 'rootcontext' which map directly to the context options described in mount(8). When one of these properties is set to something other than 'none'. That string will be passed verbatim as a mount option for the given context when the filesystem is mounted. For example, if you wanted the rootcontext for a filesystem to be set to 'system_u:object_r:fs_t' you would set the property as follows: $ zfs set rootcontext="system_u:object_r:fs_t" storage-pool/media This will ensure the filesystem is automatically mounted with that rootcontext. It is equivalent to manually specifying the rootcontext with the -o option like this: $ zfs mount -o rootcontext=system_u:object_r:fs_t storage-pool/media By default all four contexts are set to 'none'. Further information on SELinux contexts is detailed in mount(8) and selinux(8) man pages. Signed-off-by: Matthew Thode <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Yao <[email protected]> Closes #1504
* Properly ignore bdi_setup_and_register return valueRichard Yao2013-12-041-1/+4
| | | | | | | | This broke compilation against Linux 3.13 and GCC 4.7.3. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1906
* Fix typos in commit b83e3e48c9b183a80dd00eb6c7431a1cbc7d89c9DHE2013-11-201-2/+2
| | | | | | | | | | | | | | There's a missing semicolon and equals sign in the first hunk of this commit in config/kernel-bdi.m4. This results in the test always failing. The effects were noticed when rrdtool, a tool which modifies files by mmap() and msync(), would have data never get saved to disk in spite of the files working while the mounted filesystem remains mounted. Signed-off-by: DHE <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Yao <[email protected]> Closes #1889
* Posix ACL SupportMassimo Maggi2013-10-293-0/+331
| | | | | | | | | | | | | | | | | | | | | | | | This change adds support for Posix ACLs by storing them as an xattr which is common practice for many Linux file systems. Since the Posix ACL is stored as an xattr it will not overwrite any existing ZFS/NFSv4 ACLs which may have been set. The Posix ACL will also be non-functional on other platforms although it may be visible as an xattr if that platform understands SA based xattrs. By default Posix ACLs are disabled but they may be enabled with the new 'aclmode=noacl|posixacl' property. Set the property to 'posixacl' to enable them. If ZFS/NFSv4 ACL support is ever added an appropriate acltype will be added. This change passes the POSIX Test Suite cleanly with the exception of xacl/00.t test 45 which is incorrect for Linux (Ext4 fails too). http://www.tuxera.com/community/posix-test-suite/ Signed-off-by: Massimo Maggi <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #170
* Fix libblkid supportRichard Yao2013-10-101-7/+26
| | | | | | | | | | | | | | | | | | | | | | | | | libblkid support is dormant because the autotools check is broken and liblkid identifies ZFS vdevs as "zfs_member", not "zfs". We fix that with a few changes: First, we fix the libblkid autotools check to do a few things: 1. Make a 64MB file, which is the minimum size ZFS permits. 2. Make 4 fake uberblock entries to make libblkid's check succeed. 3. Return 0 upon success to make autotools use the success case. 4. Include stdlib.h to avoid implicit declration of free(). 5. Check for "zfs_member", not "zfs" 6. Make --with-blkid disable autotools check (avoids Gentoo sandbox violation) 7. Pass '-lblkid' correctly using LIBS not LDFLAGS. Second, we change the libblkid support to scan for "zfs_member", not "zfs". This makes --with-blkid work on Gentoo. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1751
* Stop runtime pointer modifications in autotools checksRichard Yao2013-09-132-16/+24
| | | | | | | | | | | | | c38367c73f592ca9729ba0d5e70b5e3bc67e0745 was meant to eliminate runtime function pointer modifications in autotools checks because they were prone to false negatives on kernels hardened by the PaX project. Unfortunately, I missed the xattr_handler and super_block->s_bdi autotools checks. Recent changes to PaX constified xattr_handler->get/set, which lead me to discover this oversight. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1433
* Linux 3.11 compat: fops->iterate()Richard Yao2013-08-152-0/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit torvalds/linux@2233f31aade393641f0eaed43a71110e629bb900 replaced ->readdir() with ->iterate() in struct file_operations. All filesystems must now use the new ->iterate method. To handle this the code was reworked to use the new ->iterate interface. Care was taken to keep the majority of changes confined to the ZPL layer which is already Linux specific. However, minor changes were required to the common zfs_readdir() function. Compatibility with older kernels was accomplished by adding versions of the trivial dir_emit* helper functions. Also the various *_readdir() functions were reworked in to wrappers which create a dir_context structure to pass to the new *_iterate() functions. Unfortunately, the new dir_emit* functions prevent us from passing a private pointer to the filldir function. The xattr directory code leveraged this ability through zfs_readdir() to generate the list of xattr names. Since we can no longer use zfs_readdir() a simplified zpl_xattr_readdir() function was added to perform the same task. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1653 Issue #1591
* Fix arc_adapt() spinning in iterate_supers_type()Brian Behlendorf2013-07-172-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | The iterate_supers_type() function which was introduced in the 3.0 kernel was supposed to provide a safe way to call an arbitrary function on all super blocks of a specific type. Unfortunately, because a list_head was used a bug was introduced which made it possible for iterate_supers_type() to get stuck spinning on a super block which was just deactivated. This can occur because when the list head is removed from the fs_supers list it is reinitialized to point to itself. If the iterate_supers_type() function happened to be processing the removed list_head it will get stuck spinning on that list_head. The bug was fixed in the 3.3 kernel by converting the list_head to an hlist_node. However, to resolve the issue for existing 3.0 - 3.2 kernels we detect when a list_head is used. Then to prevent the spinning from occurring the .next pointer is set to the fs_supers list_head which ensures the iterate_supers_type() function will always terminate. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1045 Closes #861 Closes #790
* 3.10 API change: block_device_operations->release() returns voidChris Dunlop2013-07-083-2/+31
| | | | | | | | | | Linux kernel commit torvalds/linux@db2a144 changed the return type of block_device_operations->release() to void. Detect the expected prototype and defined our callout accordingly. Signed-off-by: Chris Dunlop <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1494
* Add SEEK_DATA/SEEK_HOLE to lseek()/llseek()Li Dongyang2013-07-022-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | The approach taken was the rework zfs_holey() as little as possible and then just wrap the code as needed to ensure correct locking and error handling. Tested with xfstests 285 and 286. All tests pass except for 7-9 of 285 which try to reserve blocks first via fallocate(2) and fail because fallocate(2) is not yet supported. Note that the filp->f_lock spinlock did not exist prior to Linux 2.6.30, but we avoid the need for autotools check by virtue of the fact that SEEK_DATA/SEEK_HOLE support was not added until Linux 3.1. An autoconf check was added for lseek_execute() which is currently a private function but the expectation is that it will be exported perhaps as early as Linux 3.11. Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1384
* Ensure --with-spl-timeout waits for spl_config.h and symversCarlos Alberto Lopez Perez2013-05-021-56/+67
| | | | | | | | | | | | | | | | | | The previous code was only waiting for the symver file. But the postinst target of the DKMS script for SPL will not only create the symvers file, but also the header spl_config.h. If we are waiting in the configure script of ZFS for the SPL symvers file, then we also need to wait for spl_config.h. Otherwise the configure script will abort because the spl_config.h is not yet available. On top of that, the function ZFS_AC_SPL_MODULE_SYMVERS is moved to the end of the function ZFS_AC_SPL to allow both checks share the with-spl-timeout parameter. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1431
* Set RPM_DEFINE_COMMON optionsBrian Behlendorf2013-04-241-1/+1
| | | | | | | | | | | When the kmod packaging was introduced the ability to pass the --enable-debug and --enable-dmu-tx options from configure all the way through to `make rpm|deb` was accidenally lost. Update ZFS_AC_RPM to explicitlu set RPM_DEFINE_COMMON with these rpmbuild defines. Signed-off-by: Brian Behlendorf <[email protected]> Issue #1402
* Add --bump=0 to alienTurbo Fredriksson2013-04-241-2/+2
| | | | | | | | | | | | Preserve the release field when creating Debian packages. The --keep-version option was not used because it results in a failure when the git '<commit>_<hash>' syntax is used for the release. The '_' is a valid character for RPM packages but not for DEBs. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Turbo Fredriksson <[email protected]> Issue #1402 Issue #928
* Support .nogitrelease fileTurbo Fredriksson2013-04-241-1/+1
| | | | | | | | | When building a custom release in a git tree provide the ability to prevent the release field from being overwritten by the `git describe` output. Signed-off-by: Brian Behlendorf <[email protected]> Issue #1402
* Replace the ZFS_AC_META perl dependency with awkBrian Behlendorf2013-04-021-31/+56
| | | | | | | | | The only remaining perl dependency is part of the ZFS_AC_META macro. By eliminating this and replacing it with awk we can avoid the need to pull in perl to rebuild the packages. Signed-off-by: Brian Behlendorf <[email protected]> Issue #1380
* build: do not call boilerplate ourselfJan Engelhardt2013-04-021-0/+2
| | | | | | | | | | Rationale see section 3.5 "Using `autoreconf' to Update `configure' Scripts" of the autoconf manual. http://www.gnu.org/software/autoconf/manual/autoconf-2.67/html_node/autoreconf-Invocation.html Signed-off-by: Jan Engelhardt <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* gitignore: anchor entries at their respective directoryJan Engelhardt2013-04-021-6/+6
| | | | | | | .ko is specific to module, .m4 to config, etc. Signed-off-by: Jan Engelhardt <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* build: use CPPFLAGSJan Engelhardt2013-04-021-3/+3
| | | | | | | | -D and -I are preprocessor flags, so should preferably be in the appropriate variable. Signed-off-by: Jan Engelhardt <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* build: resolve orthographic and other grammatical errorsJan Engelhardt2013-04-021-2/+2
| | | | | Signed-off-by: Jan Engelhardt <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
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