27/05/1998 -
$Date: 2004/02/16 14:41:30 $
Logical Volume Manager Changelog
Changelog for 1.0.7 to 1.0.8
Driver
------
o fixed list handling in lvm_find_exception_table()
o corrected physical extent counters
Tools
-----
o fixed minor number assignment bug in vgscan
o fixed bug preventing to give an MD on the lvcreate command line
o fixed memory leak in vgimport
Lib
---
o fixed memory leak in lvm_tab_check_free_lv_number()
o fixed memory leak in vg_check_active()
Manuals
-------
o corrected default PE size in vgcreate(8)
===============================================================================
Changelog for 1.0.6 to 1.0.7
Driver
------
o fixed lvextend/lvreduce bug on snapshots preventing correct reload
of the excpetion table possibly giving wrong snapshot content.
Tools
-----
o "lvremove --autobackup" takes an argument
o e2fsadm environment variable bug fixed
o square brackets now match up in pvmove -v display
Lib
---
o fixed pv_read_all_pv() bug in case of no PVs
o liblvm.h, lvm_check_dev.c, lvm_check_partitioned_dev.c, lvm_dir_cache.c
support for i2o block devices added
===============================================================================
Changelog for 1.0.5 to 1.0.6
Driver
------
o fixed lvrename bug leaving wrong filesystem entries around in /proc/lvm/
Tools
-----
o fixed vgimport bug with out-of-sequence physical volume numbers
o fixed "lvmsar -h" bug
o default PE size for vgcreate is now 32MB
Lib
---
o array dereference bug fixed in vg_check_active.c
Fixed output redirect to stderr in various scripts.
===============================================================================
Changelog for 1.0.4 to 1.0.5
Driver
------
o Fixed pvmove lock bug in lvm_do_le_remap
o use blk_ioctl() of blkpg.c in lvm_blk_ioctl in order to support BLKBSZSET
and other general ioctls
o Fixed OBO error on vg array access
Tools
-----
o vgscan
- Workaround for minor metadata corruption bug in 1.1rc,
for those downgrading.
o vgcfgbackup
- running vgcfgbackup with no VGs is not an error
===============================================================================
Changelog for 1.0.3 to 1.0.4
Driver
------
o Support for NBD
o /proc/partitions segfault fixed
Tools
-----
o pvmove
- bug preventing moves beyond a 2GB offset fixed
- try to move snapshot extents rejected
- ignore_read bug fixed
Library
-------
o pv_move.c, liblvm.h
- bug preventing moves beyond a 2GB offset fixed
- ignore_read bug fixed
- try to move snapshot extents rejected
===============================================================================
Changelog for 1.0.2 to 1.0.3
LVM
---
Tool fixes to support physical and logical volumes bigger than 1 Terabyte
and up to 2 Terabytes in size.
Driver
------
Tools
-----
o lvcreate
o lvextend
o lvreduce
- support logical volume sizes up to 2TB - 1 sector
o pvcreate
- option -s to overwrite the device size. Useful to fake physical
volumes on smaller devices for test purposes or to set the device size
correctly in case the OS reports a wrong one in rare cases
o pvmove (involves pv_move_pes() in the library as well)
- supports moves in inactive volume groups now
- new option "-i" to ignore read errors on flaky or otherwise
inaccessible devices
o vgcfgrestore
- option -b to give a backup history number together with "-n VolumeGroupName"
- option -i to ignore the size of the device to be restored to
- no need to give -n *and* -f any longer
o vgcreate: remove wrong check for ~64k extents maximum
o vgchange
- drop snapshot logical volumes which have broken exception tables
during volume group activation
o vgexport can now export volume groups which are not in /etc/lvmtab*
o vgscan
- option -f to force changes of volume group and logical volume device numbers
which potentially violates NFS client access in case of exported filesystems
on changed logical volumes
- option -r to remove all snapshots in all volume groups or snapshots in
a specified volume group (useful in case snapshots are corrupt)
Library
-------
o lvm_check_number_ll
- new (long long) returning function to convert
number strings with optional size suffixes
o lvm_tab_check_free_lv_number
- new function to check if a single logical volume device number
is already used
o pv_get_size_ll
- new ( long long) returning function to support 1TB < PV size < 2TB
o pv_move_pes
- support for moves in inactive volume groups and for ignoring read errors
o pv_write
- zero gap between PV structure and VG structure on disk in order
to avoid confusing other tools
===============================================================================
Changelog for 1.0.1 to 1.0.2
LVM
---
Driver
------
o now works with 2.4.17
o reduce stack footprint with snapshots
o sparc 64 fixes (tests needed!)
o avoid oops when accessing PVs of an inactive VG
Tools
-----
o persistent LV device minors to support client recovery after
a NFS server reboot/failover
o ataraid device support
o support loop devices (they do not show up in /proc/partitions)
o fixed contiguous PV array bug in pv_read_all_pv_of_vg.c
o avoid flushing PVs
o DAC960 recognition bugs fixed
===============================================================================
Changelog for 1.0 to 1.0.1
LVM
---
LVM now supports both version 1 and version 2 data formats. No need to
upgrade !
Driver
------
o now works with 2.4.16
Tools
-----
o support for version 1 and 2 data formats
o Now stores new and changed PVs in version 1 data format!
o zero pv and lv arrays in vg_cfgrestore
o removing of PVs from VGs with snapshot now works
(changes in pv_read_all_pv_of_vg(), pv_read_all_pe_of_vg(),
vg_setup_for_merge(), vg_setup_for_extend(), vg_setup_for_reduce(),
vg_setup_for_split() and liblvm.h)
o persistant LV and PV numbers
o lvmcreate_initd now supports devfs
o support for non-partitioned MDs
o SPARC compilation fixes
===============================================================================
Changelog for 0.9.1_beta8 to 1.0
LVM
---
o fixed pvversion so handle downgrades more gracefully
o Fixed various messages in tools
Install
-------
README.1st - covers upgrade/downgrade process detailed;
!!!THIS IS A MUST READ OR SUFFER FILE!!!
===============================================================================
Changelog for 0.9.1_beta7 to 0.9.1_beta8
----------------------------------------
LVM
---
Fixed various messages in tools and edited some man pages.
Driver
------
o rwsem support in 2.4 and compatibility for 2.2
o race window related to fsync_dev closed
o locking for queued writes fixed
Tools
-----
pvversion - new tool to support upgrade/downgrade of metadata format to version
2 (the one used with this release) or 1 (the one in place
up to LVM 0.9.1 Beta 7)
pvdisplay - display PV from disk rather than from kernel
vgremove - fixed SEGV when verbose
Library
-------
liblvm.h
pv_copy.c
vg_setup_for_create - support to make sure that pvdisplay shows PV from
disk rather than from kernel
pv_check_free.c
pv_copy
pv_move
vg_setup_for_create.c - use new userland PV strcuture member pe_start,
which holds the sector offset to the first PE and
is filled in by pvversion on upgrade
Install
-------
README.1st - covers upgrade/downgrade process detailed;
!!!THIS IS A MUST READ OR SUFFER FILE!!!
===============================================================================
Changelog for 0.9.1_beta6 to 0.9.1_beta7
----------------------------------------
LVM
---
Driver
------
o defer write[a] requests to an extent that is being moved until the move
has completed. Needed to support pvmove of a live LV.
o use b_rdev and b_rsector rather than b_dev and b_blocknr
in lvm_map() in order to make stacking devices more happy
o Added display of stripes and stripe size of an LV
Tools
-----
lvmcreate_initrd - problems with monolithic kernels
lvrename - extra checking of command line paramters
Many usage message updates and man page changes
Library
-------
vgcreate_remove.c - Add some backward compatibility for the VG_CREATE
ioctl so that the new tools will work with older kernels.
Install
-------
PATCHES/Makefile no longer deals with 'new raid', see PATCHES/README for
more info.
===============================================================================
Changelog for 0.9.1_beta5 to 0.9.1_beta6
----------------------------------------
LVM
---
o **IMPORTANT** IOP version has moved back to 10, make sure tools and
kernel driver are both upgraded to beta6, if you are running beta5.
Driver
------
o Fixes to get LVM working on UltraSPARC boxes. Note this requires an
additional kernel patch.
o Fixed bug in lvm_do_lvcreate() in order to avoid invalid accesses
to user space addresses in vg->lv[]
o factored lvm_get_snapshot_use_rate out of blk_ioctl
o introduced the P_DEV macro and changed some internal functions to be static
o Added VG_CREATE_OLD ioctl for IOP 10 compatibility
o Reverted IOP back to 10
o lvextend/reduce was stamping over the snapshot semaphore causing an oops.
This fixes the reiserfs + lvextend problem reported on the mailing list
o status that a snapshot was dropped is now stored on disk in order to be
restored correctly by vgchange
o new lvm-release.h include reflecting the version
o lvm locking is now fixed
o bmap IOCTL changes for LILO support
Tools
-----
o pvdata -U now works
o lvdisplay on an original LV now lists the active/inactive status per snapshot
o lvscan now shows the target for a snapshot LV
o vgchange now informs the administrator about dropped snapshots and restores
them correctly in order to be able to lvremove them
Library
-------
o -fPIC flag now used when building shared libs.
Install
-------
===============================================================================
Changelog for 0.9.1_beta4 to 0.9.1_beta5
----------------------------------------
LVM
---
o **IMPORTANT** IOP version has moved to 11, make sure tools and kernel driver
are both upgraded to beta5.
o New VFS patch for 2.4.1
Driver
------
o lvm-snap.h -> lvm-internal.h
o lvm_map function has been tidied
o new file lvm-fs.c contains procfs and devfs code behind a common interface
o Preallocate buffers for rawio under 2.2 to avoid deadlock with snapshots
o devfs handles now indexed by MINOR(lv->lv_dev)
o remove modversions.h
o change LVM_SNAPSHOT_MIN_CHUNK to one page
o tidy blk.h macros
Tools
-----
o vgscan can be run more than once on a devfs system :)
o various man page tidy-ups and usage message improvements
o more devfs support
o fixes to e2fsadm
Library
-------
o various tidy ups
o vg_create() does it's ioctl on /dev/lvm rather than /dev/vg/group
Install
-------
o exec_prefix defaults to prefix when doing a ./configure if prefix is
explicitly set
===============================================================================
Changelog for 0.9.1_beta3 to 0.9.1_beta4
----------------------------------------
LVM
---
o Changed the configure process so the default location for the tools is
/sbin, the default location for the libs is /lib, and the default location
for the man pages is /usr/man. This required a hack to the
prefix/exec_prefix variables, so if you build packages, you need to be
aware of how this changed things.
Driver
------
o fixed oops renaming inactive VG
Tools
-----
Library
-------
o Switched the shared lib naming scheme to reflect the IOP version.
lvm_check_dev
lvm_check_partitioned_dev
lvm_dir_cache - added compaq SMART2 & CISS support
pv_read_all_pv_of_vg
- fixed bug causing rare loss of a valid PV structure;
vgscan couldn't find the VG
===============================================================================
Changelog for 0.9.1_beta2 to 0.9.1_beta3
----------------------------------------
LVM
---
o corrected max chunk size value in lvcreate(8) man page
Driver
------
o page lock bug fixed by backing up to former page locking
o fixed lvchange activation/decativation bug
Tools
-----
lvcreate - fixed chunk size related default unit size bug
- fixed return value bug with lvm_check_number()
vgcreate - fixed PE size related default unit size bug
===============================================================================
Changelog for 0.9.1_beta1 to 0.9.1_beta2
----------------------------------------
LVM
---
o Shared library version numbers now automatically reflects the LVM
version number (eg, liblvm.so.0.9.1_beta2)
Driver
------
o Synchronisation fixes for snapshot lists.
o Removed lvm_init from ll_rw_block
Tools
-----
vgexport - segfault fixed.
Library
-------
pv_read_all_pv_of_vg.c
- changed to stop segfault appearing in vgexport.
pv_read_all_pv_of_vg.c
- sorting of PV's corrected.
pv_copy - version is 16 bits, not 32.
===============================================================================
Changelog for 0.9 to 0.9.1 beta1
--------------------------------
LVM
---
Driver
------
lvm_do_create_proc_entry_of_pv
- fixed buffer tampering BUG
lvm_do_lv_remove
- fixed race condition in case of snapshot remove (PC)
lvm_do_pv_create
- fixed double increment BUG
lvm_do_vg_extend
- NULL pointer BUGNULL pointer bug fixed
2.2.18 patch - will allow LVM to run on software raid.
lvm-snap.h - created to seperate snapshot function definitions (JT)
Tools
-----
lvmdiskscan - fixed LVM_WHOLE_disk macro
vgscan - reworded backup message (JT)
Library
-------
liblvm.h - added prototype for vg_setup_pointers_for_snapshots()
lv_show - display snapshot information correctly (PC)
- use structure pointers provided by
vg_setup_pointers_for_snapshots() now
vg_check_consistency_with_pv_and_lv
- returns correct error code now
vg_cfgrestore
vg_read_with_pv_and_lv
vg_status_with_pv_and_lv
- use new lib function vg_setup_pointers_for_snapshots()
vg_setup_pointers_for_snapshots
- created; sets up pointers between logical volume snapshot structures
===============================================================================
Changelog for 0.8final to 0.9
-----------------------------
LVM
---
Driver
------
General - changed proc filesystem interface to a /dev/lvm/ hierarchy;
see "man lvm" for further details
- new header file lvm-snap.h
- Removed userland include (endian.h) and moved the
core <-> data macros to liblvm.h
lvm_proc_read_vg_group_info
lvm_proc_read_lv_info
lvm_proc_read_pv_info
lvm_do_create_proc_entry_of_vg
lvm_do_remove_proc_entry_of_vg
lvm_do_create_proc_entry_of_lv
lvm_do_remove_proc_entry_of_lv
lvm_do_create_proc_entry_of_pv
lvm_do_remove_proc_entry_of_pv
- implemented to support the proc filesystem hierarchy
lvm_do_lv_create
- extended to fill hash table in case of activation
of an existing snapshot logical volume
- calls to set_device_ro()
- PE used count is adjusted when creating snapshots
lvm_do_lv_remove
- PE used count is adjusted when releasing snapshots
lvm_init - Turned of elevator algorithm for LVM block device
lvm_blk_ioctl
- calls to set_device_ro() in case of access change
lvm_blk_open - Permissions bug on the block device
lvm_do_lv_extend_reduce
- fixed bug which exposed i/o errors while resizing logical
volumes under heavy load
- enhanced to support resizing of snapshot logical volumes
lvm_do_lv_rename
- enhancement for renaming active logical volumes (rather than
lvm_do_lv_remove()/lvm_do_lv_create() pair of calls)
lvm_do_vg_rename
- enhancement for renaming active volume groups
lvm_write_COW_table_block
- implemented; write single copy on write exception table
block to the disk
Tools
-----
vgcreate
lvcreate - fixed size bug in case of SECTOR_SIZE != 512
- used lv_setup_COW_table_for_create() after name change
lvchange
lvcreate
lvdisplay
lvextend
lvreduce
lvremove
lvrename - support for LV_VG_NAME environment variable
lvmcreate_initrd
- use temprary loop device rather than ram disk for creation
now
- changed the kernel module name to lvm-mod.o
- changed the location of the kernel module for 2.4.0
lvremove - no need to unlink the lv if we're using devfs
- removing a snapshot now updates the source lv so it can
be subsequently removed as well.
lvrename - changed to use new lv_rename() library function to
rename active logical volumes
vgchange - removed vg_deactivate() calls
vgrename - changed to use new vg_rename() library function to
rename active volume groups
vgscan - avoided continue after call
to vg_remove_dir_and_group_and_nodes()
- deleted snapshot reset stuff
- removed vg_deactivate() calls
- reworded VGDA not backed up message
Library
-------
lvm.h - changed structure member name pv_name to pv_uuid
liblvm.h - declared lvm_check_devfs
lv_show - added output of space used for COW table
lvm_create_uuid - implemented; creates a 32 byte long UUID
lvm_check_dev
lvm_check_partitioned_dev
- added DASD major support
lvm_dir_cache - avoided caching in case of reading /proc/partitons or devfs
lvm_remove_recursive
- fixed returning an erorcode if file/directory
don't exist
pv_read_all_pv_of_vg
- avoided double entries for PVs with multiple access pathes
pv_get_kdev_t_by_number
- implemented; gets the kdev_t address of a physical
volume given its internal number
pv_setup_for_create
- initialize UUID in VG structure with lvm_create_uuid()
pv_write - support automatic creation of PV UUIDs
- use new function lvm_create_uuid()
lv_init_COW_table
- implemented to zero the copy on write exception table
on physical volume(s)
lv_rename - implemented to support kernel ioctl to rename an active
logical volume
lv_setup_snapshot_exception_table
- fixed size bug in case of SECTOR_SIZE != 512
- renamed to lv_setup_COW_table_for_create
lv_setup_COW_table_for_create
- enhanced to take COW exception table at the beginning
of each physical extent into account
vg_cfgrestore - implemented check for invalid backup in case
of changed structure sizes
vg_deactivate - obsolete; removed
vg_rename - implemented to support kernel ioctl to rename an active
volume group
vg_setup_for_create
- initialize UUID in VG structure with lvm_create_uuid()
- move start of LV structure array to sector boundary
vg_write - support automatic creation of VG UUIDs
- use new function lvm_create_uuid()
===============================================================================
Changelog for 0.8-pre02.10.1999 (included with SuSE 6.3) to 0.8final
--------------------------------------------------------------------
LVM
---
/usr/src/linux/drivers/block/ll_rw_blk.c
- changed to support stacking of volume drivers (MD(LVM)
/usr/src/linux/fs/partitions/check.c
- added /proc/partition support for LVM
Driver
------
do_lv_remove - enhanced to support removal of snapshot logical volumes
general - added lvm-snap.c with Andrea Arcangeli's (THX Andrea!)
snapshot support functions
Tools
-----
All tools - implemented support for long options
- additional exit states
Makefile - avoided dynamic library search into generate directory
lvmcreate_initrd
- kernel version parameter support
lvdisplay
pvdisplay
vgdisplay - implemented option -c for colon seperated output
enabling easy parsing
lvmdiskscan - fixed partition count bug
lvchange
lvcreate
lvextend
lvreduce
lvremove
lvrename
pvchange
pvmove
vgchange
vgcreate
vgextend
vgmerge
vgreduce
vgrename
vgsplit - added support for LVM_AUTOBACKUP environment variable
(thx to Torsten Neuman <torsten@londo.rhein-main.de>)
vgscan - use lvm_remove_recursive() instead of system ( "rm -fr ...
vgcfgrestore - deleted check of lvmtab to avoid catch 22 situation
Library
-------
All functions - changed to use debug_enter()/debug_leave()
debug_enter
debug_leave - implemented to support better tracing
lvm_dir_cache - added /proc/partitions support to gain performance
lvm_error - implemented to support plan text error messages rather
than numbers
lvm_remove_recursive
- created to avoid system("rm -fr ...
vg_status - added malloc() of volume group structure
vg_cfgbackup - implemented support for environment variable
LVM_VG_MAX_BACKUPS to set maximum backup history depth
vg_remove_dir_and_group_and_nodes
- use lvm_remove_recursive() instead of system ( "rm -fr ...
===============================================================================
Changelog for LVM 0.7 to 0.8-pre02.10.1999
------------------------------------------
LVM
---
Driver
------
do_lv_create
lvm_map
lvm_snapshot_remap_block
lvm_snapshot_remap_new_block
- enhanced to support creation of snapshot logical volumes
Tools
-----
lvcreate - enhanced to support creation of snapshot logical volumes
lvmdiskscan - added support for DAC960
- changed open optimization because it fails in non
standard environments
lvremove - enhanced to support deletion of snapshot logical volumes
lvchange - enhanced to block attribute changes on snapshot LVs
lvextend
lvreduce - enhanced to block resizing on snapshot LVs
pvcreate
vgremove - additional exit codes
Library
-------
lvm_check_whole_disk_dev
- implemeted; checks, if device mapps a whole disk
lvm_dir_cache_find
- implemented; finds a slot in the directory cache
by giving the device name
lvm_partition_count
- implemeted;
gets partition count (for eg. 16 for IDE or 8 for DAC960)
lvm_check_extended_partition
- implemeted; checks, if device mapps an extended partition
lvm_check_kernel_lvmtab_consistency
- implemented; checks, if lvmtab and kernel VG namelists
are consistent (names of active VGs _must_ exits in lvmtab).
lvm_dir_cache_select
- deleted; internal support function for scandir()
lvm_tab_vg_check_exist_all_vg
- free unused memory if recalled
pv_check_part.c - rewritten using lvm_dir_cache_find()
pv_move - fixed move bug on loop devices
(thx to Johannes Deisenhofer jo@hexmac.com)
pv_read_all_pv - avoided open optimization because it fails in non
standard environments
lv_setup_for_extend.c
lv_setup_for_reduce.c
lvm_dir_cache.c
lvm_get_col_numbers.c
lvm_tab_get_free_blk_dev.c
lvm_tab_vg_check_exist_all_vg.c
lvm_tab_vg_insert.c
pv_find_all_pv_names.c
pv_move.c
pv_read_all_pv.c
pv_read_already_red.c
pv_reserve_release_pe.c
pv_status.c
vg_check_active.c
vg_check_exist.c
vg_setup_for_reduce.c
- fixed potential NULL pointer free() calls
===============================================================================
Changelog for LVM 0.6 to 0.7
----------------------------
LVM
---
drivers/block/genhd.c
- added function pointer call to lvm_hd_name ()
/usr/src/linux/drivers/block/ll_rw_blk.c
- enhanced to support PVs on loop devices for
test/evaluation purposes
Driver
------
module_init/lvm_init
- fixed a NULL pointer in case of LVM activated
without any previously existing gendisks
- added lvm_hd_name_ptr setup
cleanup_module
- added lvm_hd_name_ptr setup
Tools
-----
ALL - added exit code 95 for driver/module not in kernel
lvmcreate_initrd
- script to create an initial ram disk image containing
all neccessary files to change to a root filesystem
contained in a LV
lvmdiskscan - enhanced to support loop devices
lvscan - added total capacity display
pvscan
vgdisplay - reformated option -s output
vgimport - fixed MAX_LV bug
vgscan - added VG and LV minor correction in case they overlap
Library-Functions
-----------------
liblvm.h - rearanged includes due to 2.3.x changes
pv_get_size - enhanced to support loop devices
lv_check_stripesize
- fixed size bug
lvm_check_special
- implemented; checks for and optionaly creates /dev/lvm
lvm_check_partitioned_dev
- implemented; checks for a partitioned physical volume
(used by pv_get_size() and lvmdiskscan now)
lvm_dir_cache - avoided useless allocation if cache was hit
- added /dev/rd/
vg_read_with_pv_and_lv
- added correction of block device major in case
of old logical volume major number
lvm_check_chars
lv_check_name
vg_check_name - allowed '.' as valid character and checked for
invalid "." and ".." VG and LV names
pv_reserve_release_pe
- fixed striped LV shrink bug
vg_check_exist_all_vg
- fixed NULL pointer bug
===============================================================================
Changelog for LVM 0.5alpha to 0.6
---------------------------------
LVM
---
general - changed to deal with up to 256 logical volumes
per volume group
Driver
------
lvm_chr_open - moved spinlock code to lvm_chr_ioctl()
lvm_chr_ioctl - added spinlock code and allowed some ioctl's
while another process holds the lock
- fixed NULL pointer buf with VG_REDUCE
- added LVM_LOCK_LVM ioctl
lvm_blk_ioctl - enhanced BLKRASET/BLKRAGET ioctl to support
read ahead sectors per logical volume
do_vg_remove - using do_lv_remove() avoided some code
Tools
-----
general - changed to new LVM_LOCK_LVM
e2fsadm
lvcreate
Ivextend
lvreduce
lvmchange
vgreate - added units to size option arguments to allow
kilo-/mega-/giga- and terabyte entries
lvmchange - removed option r for read ahead sectors
(now implemented on a per logical volume base)
lvchange
lvcreate - implemented option r (read ahead)
lvremove - added linefeeds to stderr
pvscan - added options s and n for short display and no volume group
vgchange - added option l for changeing maximum logical volume number
Library-Functions
-----------------
lvm_check_number - supports units [mM] for megabyte, [gG] for gigabyte
and [tT] for terabyte now
lvm_lock - changed to new LVM_LOCK_LVM ioctl
lvm_show_size - fixed presentation bug with zero
lvm_tab_get_blk_dev
- implemented; gets an existing/new block device major/minor
based on the lvm_tab information
lv_change_read_ahead
- implemented to change lgocal volume read ahead
sector count (BLKRASET/BLKRAGET)
lv_create_dev_t - obsoleted
lv_show - added output of block device MAJOR:MINOR
lvm_tab_get_free_blk_dev
- created to deal with the free block special pool
lv_copy_from_disk
lv_copy_to_disk
pe_copy_from_disk
pe_copy_to_disk
pv_copy_from_disk
pv_copy_to_disk
vg_copy_from_disk
vg_copy_to_disk - avoided conversion if architecture is __LITTLE_ENDIAN
vg_check_exist_all_vg
- changed to support free volume group names
===============================================================================
Changelog for LVM 0.4alpha to 0.5alpha
--------------------------------------
LVM
---
general - ported to 2.2.x
- integrated with stock 2.0/2.1/2.2 kernels;
files involved:
- CREDITS
- MAINTAINERS
- Documentation/Configure.help
- drivers/block/Config.in
- drivers/block/Makefile
- drivers/block/README.lvm
- drivers/block/ll_rw_blk.c
- drivers/block/lvm.c
- include/linux/lvm.h
- include/linux/major.h
- kernel/ksyms.c
- obsoleted lvm_version.h
- ported to libc6
Driver
------
general - implemented i/o statistic for logical volumes
- used __initfunc macro (>=2.1.x) to free some initial
functions memory
- fixed lvm_gendisk.part[] index error
- changed to official major numbers and removed use
of lvm_MajorNumber variable previously defined in
lvm_kernel.h
lvm.h - enhaced pe_t structure definition by ios member
to hold i/o operations till logical volume activation
- removed LVM_MAJOR to use official
LVM_CHAR_MAJOR/LVM_BLOCK_MAJOR defind in
/usr/src/linux/include/linux/major.h
- implemented seperated disk and core VGDA structures
to support exchange of volume groups between
different platforms
- moved internal driver function prototypes to lvm.c
lvm_kernel.h - removed lvm_MajorNumber
- obsoleted by merging into lvm.h
lvm_map - added I/O statistic for reads and writes per
logical extent
do_lv_extend_reduce
- saved i/o statistics across logical volume extensions
and reductions
do_lv_create - fixed LV index bug in case of renaming an LV
lvm_proc_get_info
- implemented line split in case of long LV name
Tools
-----
general - corrected messages in many tools
- added exit states to all tools including man pages
e2fsadm - implemented; uses e2fsck, lvextend, lvreduce and resize2fs
and /proc/mounts to resize ext2 filesystem and containing
logical volume
lvchange - added check for volume group existence
lvcreate
lvrename
vgrename - logical volume path length bug fixed
lvrename - command line handling bug fixed
lvmsadc - new logical volume manager system activity daemon
lvmsar - new logical volume manager system activity reporter
pvmove - enhanced to handle LE/PE move lists/ranges
vgextend - avoided unecessary volume group exixtence check
lvcreate.c
lvrename.c
pvmove.c
vgcreate.c
vgmknodes.c
vgrename.c - make volume group directory a preprocessor option
Library-Functions
-----------------
general - implemented data layer functions (see below)
lvm_check_chars - implemented to check allowed characters in VG, LV
and PV names
lv_check_on_pv - fixed bug in PE loop
lv_check_consistency_all_lv
- added LV number check
lv_create_node - added unlink() error return
lvm_lock.c
lv_create_kdev_t
vg_create_dir_and_group.c
- changed to official major numbers
lvm_dir_cache
pv_check_name - corrected handling of devfs names
lv_read_all_lv_of_vg
- fixed free() bug
lv_setup_for_extend
- fixed contiguous allocation extension bug if logical
volume not starting on first physical volume
lv_show_current_pe_text
- output # of PVs for LV distribution
- output # of i/o operations with option -v for
each logical extent and each physical volume; output
a total i/o summary
lv_status_byindex
lv_status_byname - enhanced to get lv_current_pe array from kernel too
(lv_status_with_pe() only did that before)
lv_status_with_pe
- obsoleted (has been used in lvdisplay.c only)
lvm_lock - added creation of device special /dev/lvm (if missing)
lvm_get_col_numbers
- implemented (used by pvmove.c) to parse lists/ranges
of logical/physical extent numbers in the command line
lvm_tab_lv_read_by_name
- implemented (used by e2fsadm.c) to read LV VGDA part
from lvmtab.
pv_move_pes - enhanced to handle LE/PE move lists
pv_reserve - fixed contiguous logical volume allocation bug
in case of extension
vg_cfgbackup - implemeted deeper backup history; now up to 10
backup files for each volume group are available in
/etc/lvmconf/
lv_check_name
pv_check_name
vg_check_name - used new lvm_check_chars()
lv_copy_from_disk
lv_copy_to_disk
pe_copy_from_disk
pe_copy_to_disk
pv_copy_from_disk
pv_copy_to_disk
vg_copy_from_disk
vg_copy_to_disk - implemented to convert between disk and core structures
(necessary to support exchange of volume groups between
different platforms); data layer functions
pv_check_consistency
- enhanced to check PE structure
pv_check_number - fixed array index bug
pv_show_pe_text - added output of disk offset in sectors of 512B
lv_read_all_lv_of_vg
lv_write_all_lv_of_vg
lv_write
pv_read
pv_write
vg_read
vg_write - seperated disk and core structures by using
new functions ??_copy_{from/to}_disk()
vg_read - hand back VG pointer in vg_read() in case of exported VG
lv_check_name.c
lv_create_remove.c
lv_extend_reduce.c
lv_le_remap.c
lv_setup_for_create.c
lv_status.c
pe_lock.c
pv_change.c
pv_status.c
vg_check_name.c
vg_create_dir_and_group.c
vg_create_dir_and_group_and_nodes.c
vg_extend_reduce.c
vg_set_clear_extendable.c
vg_setup_for_merge.c
vg_status.c
liblvm.h - make volume group directory a preprocessor option
===============================================================================
Changelog for LVM 0.3alpha to 0.4alpha
--------------------------------------
LVM
---
general - changed all short/long/char/etc. to uintNN_t and
#if'ing them to keep down with __uNN of 2.0.x
lvm.h - changed LVM_LV_SIZE_MAX macro to return long long
Driver
------
general - changed allocation from using kmalloc to vmalloc
to gain larger memory chunks (no 256GB with PE size 4MB)
lvm_chr_open - #if'd spinlock code to keep down with 2.0.x
Tools
-----
lvmdiskscan - implemented; scans for all
disks / multiple devices / partitions available
vgck - implemented to do a consistency check
of volume group descriptor areas
vgextend - moved extend structure stuff to lib layer
vgreduce - moved reduce structure stuff to lib layer
vgmerge
vgsplit - implemented to split or merge volume groups
Library-Functions
-----------------
vg_check_name - additional check for EXPORTED VG name
vg_free - implemented to free malloced memory of a core VGDA
vg_setup_for_extend
- created from moved code in vgextend.c
vg_setup_for_reduce
- created from moved code in vgreduce.c
lvm_show_size - renamed from show_size and changed
size parameter to type long long
lvm_show_filetype
- renamed from filetype_show
===============================================================================
Changelog for LVM 0.2alpha to 0.3alpha
--------------------------------------
LVM
---
general - ported to Linux 2.1.98 to 2.1.102
- added support for free volume group and
logical volume names
- added support for MD (multiple device) usage
- implemented full pvmove function to be able to move
all types of logical volumes (linear/striped/contiguous)
- added LVM shared library
- added checking for /etc/lvmtab and /etc/lvmtab.d existence
- changed name of ??_store* functions to ??_write*
to get consistency with ??_read* function names
- avoided creating backup files, if they didn't change
Driver
------
lv_chr_ioctl - implemented LV_STATUS_BYINDEX ioctl
- changed LV_STATUS to LV_STATUS_BYNAME ioctl
- implemented VG_SET_EXTENDABLE ioctl
lvm_map - added IDE4/IDE5 majors for Linux > 2.1.9x
lvm_proc_get_info
- changed output format of /proc/lvm
lvm.h - reintegrated lvm_v1.h to form one lvm.h with all
structure versions
Tools
-----
lvcreate - implemented -n option for free logical volume names
lvrename - implemented; supports renaming of logical volumes
lvscan - implemented; scans for logical volumes in all volume groups
pvchange - avoided option -c
pvdisplay - implemented option -s
pvmove - implemented physical extent move for a single logical
volume; supported striped and/or contiguous logical volumes
vgchange - implemented option -x
vgextend
vgreduce - added extension/reduction lock (vgchange -x n ...)
vgdisplay - used vg_read_with_pv_and_lv() instead of
lvm_tab_vg_read_with_pv_and_lv() for option -D
vgmknodes - implemented to support creation of volume group
directory and special files in case of deletion
vgrename - implemented; supports renaming of volume groups
pvcreate
vgcfgrestore
vgcreate
vgimport
vgexport
vgrename
vgremove
vgscan - enhanced error checking of lvm_tab_vg_insert() and
lvm_tab_vg_remove()
vgrestore - changed to support restore to dedicated physical volume
and to support path changes between physical volume
pathes on backup and actual physical volume pathes
pvchange
pvscan
vgimport - obsoleted physical volume name change
(it's now in pv_read())
Library-Functions
-----------------
lvm_check_dev - implemented to check for usable devices (SCSI, IDE, MD);
added IDE4/IDE5 majors for Linux > 2.1.9x
lvm_dir_cache - implemented as directory cache function for block devices
(used to avoid direct directory handling in
pv_create_name_from_kdev_t.c, pv_read.c and pv_status.c)
lvm_filetype_show
- implemented
lvm_tab_vg_insert
lvm_tab_vg_remove
- several bug fixes
vg_number_from_name
lv_create_number_from_name
lv_number_from_name
lv_create_name - removed (obsolete)
lv_number_from_name_in_vg
- implemented to avoid inline name string creation
(this obsoletd lv_number_from_name())
lvm_tab_get_free_vg_number
- bug fix for empty/no lvmtab file
pv_move_pes - implemented; calculates multiple PEs to be moved
pv_move_pe - implemented; called by pv_move_pes() to move one PE
pv_create_name_from_kdev_t
pv_read_all_pv
pv_status_all_pv - avoided direct directory scanning
(it's now in lvm_dir_cache())
pv_read - implemented correction of physical volume name to
avoid it in the tools level
vg_check_exist - bug fix for handling exported volume groups
lv_create_kdev_t.c
pv_check_consistency.c
pv_check_name
pv_create_name_from_kdev_t.c
pv_read.c
vg_create_dir_and_group.c
- added multiple device support
vg_show - implemented display of extension/reduction lock
vg_set_extendable
vg_clear_extendable
- implemented
===============================================================================
Changelog for LVM 0.1alpha to 0.2alpha
--------------------------------------
LVM
---
general - ported to Linux 2.1.60-62
- tested with Linux 2.1.31
Driver
------
lvm_chr_ioctl - implemented ioctls to get number of active VGs
and list of VG names
- implemented ioctl to give an i/o protocol number
Tools
-----
all - switched to lvm_tab_* functions to gain performance
- added several messages
- fixed stdin close bug
vgcfgrestore - moved restore code partially to lib
vgscan - implemented: builds /etc/lvmtab and /etc/lvmtab.d
from VGDAs on PVs
Library-Functions
-----------------
general - inititlized all file handles with -1 to
avoid error close of stdin
- started support for free VG and LV names
pv_get_index_by_kdev_t
- renamed from pv_get_index
pv_get_index_by_name
- implemented
lvm_get_iop_version
- implemented: get's i/o protocol version from kernel
lvm_tab_lv_check_exist
- implemented
lvm_tab_vg_insert
- implemented
lvm_tab_vg_read_with_pv_and_lv
- implemented
lvm_tab_vg_read
- implemented
lvm_tab_vg_remove
- implemented
lvm_tab_vg_check_exist
- implemented
lvm_tab_vg_check_exist_all_vg
- implemented
lvm_tab_read
- implemented
lvm_tab_store
- implemented
lv_get_index_by_name
- renamed form lv_get_index and changed formal paramter
list sequence
lv_get_index_by_kdev_t
- implemented
lv_status_all_lv_of_vg
- changed formal parameters to avoid vg_read - call
vg_remove_dir_and_group_and_nodes
- implemented
vg_cfgbackup - added option to avoid .old backups and .conf
suffixes for /etc/lvmtab.d
vg_cfgrestore - implemented
vg_status - changed formal parameters in call to lv_status_all_lv_of_vg
===============================================================================
Changelog for LVM 0.0alpha to 0.1alpha
--------------------------------------
LVM
---
general - Ported to Linux 2.1.57
Driver
------
general - fixed some NULL-Pointer references
- added use of ioctl macros
lvm_chr_open / - fixed race condition
lvm_chr_close
lvm_chr_ioctl - implemented physical volume flush and invalidate buffers
ioctl to avoid reading data of inavailable physical
volumes from buffer cache (see pv_flush in library)
Tools
-----
lvcreate - several messages added
lvreduce - fixed segfault
pvcreate - corrected option -f handling
pvdata - removed direct read of physical vlome name list
from disk; used new pv_read_namelist() instead
pvmove - several bugs fixed
pvscan - added informational message to use pvchange in case
of invalid physical volume name (caused by HW changes)
- changed messages for physical volume in no volume group /
in exported volume group
vgdisplay - added -s option: displays short listing of
existing volume groups
vgimport - fixed wrong correction handling of device names
vgreduce - fixed segfault
- avoided reducing to 0 physical volumes
- added -a option: reduces volume group by all free
physical volumes
Library-Functions
-----------------
general - fixed bugs with always using pv[0] instead off actual pv
pv_check_part - added support for extended partitions
pv_create_name_from_kdev_t
- corrected and extended PV name generation for IDE
pv_flush - user space part to flush buffer cache and invalidate
buffers for individual physical volumes
(see PV_FLUSH in lvm_chr_ioctl of driver)
pv_get_size - extended partitions now supported
pv_number_check - implemented
pv_read - finished looping trough all possible device specials
after ENODEVs and ENXIOs to become faster;
called pv_flush before reads
pv_read_all_pe_of_vg
- used pv_number_check to sort PE arrays by PV number
pv_read_namelist - implemented to read namelist from the VGDA on disk
vg_check_name - support for full volume group path (eg. /dev/vg00)
vg_show - added a row for maximum logical volume size