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Commit Graph

62 Commits

Author SHA1 Message Date
David Teigland
8bb76aea81 system_id: undo the previous changes to the lvm1 code
The system_id and lock_type compat changes do not apply
to the lvm1 code.
2015-03-05 10:13:05 -06:00
David Teigland
1e65fdd9ba system_id: make new VGs read-only for old lvm versions
Previous versions of lvm will not obey the restrictions
imposed by the new system_id, and would allow such a VG
to be written.  So, a VG with a new system_id is further
changed to force previous lvm versions to treat it as
read-only.  This is done by removing the WRITE flag from
the metadata status line of these VGs, and putting a new
WRITE_LOCKED flag in the flags line of the metadata.

Versions of lvm that recognize WRITE_LOCKED, also obey the
new system_id.  For these lvm versions, WRITE_LOCKED is
identical to WRITE, and the rules associated with matching
system_id's are imposed.

A new VG lock_type field is also added that causes the same
WRITE/WRITE_LOCKED transformation when set.  A previous
version of lvm will also see a VG with lock_type as read-only.

Versions of lvm that recognize WRITE_LOCKED, must also obey
the lock_type setting.  Until the lock_type feature is added,
lvm will fail to read any VG with lock_type set and report an
error about an unsupported lock_type.  Once the lock_type
feature is added, lvm will allow VGs with lock_type to be
used according to the rules imposed by the lock_type.

When both system_id and lock_type settings are removed, a VG
is written with the old WRITE status flag, and without the
new WRITE_LOCKED flag.  This allows old versions of lvm to
use the VG as before.
2015-03-05 09:50:43 -06:00
Alasdair G Kergon
340369ab25 format1: Export generate_lvm1_system_id.
Export _lvm1_system_id as generate_lvm1_system_id and call it in
vg_setup() so it is set before writing the metadata to disk
and not missing from the initial metadata backup file.
2015-03-04 00:44:15 +00:00
Alasdair G Kergon
5e6e2d6b1b vgcreate: Permit non-power-of-2 extent sizes.
Relax validation to permit extent sizes > 128KB that are not powers of 2
with lvm2 format.  Existing code was already capable of handling this.
2014-10-14 18:12:15 +01:00
Peter Rajnoha
5abdb52fdc report: select: refactor: move str_list to libdm
The list of strings is used quite frequently and we'd like to reuse
this simple structure for report selection support too. Make it part
of libdevmapper for general reuse throughout the code.

This also simplifies the LVM code a bit since we don't need to
include and manage lvm-types.h anymore (the string list was the
only structure defined there).
2014-06-17 16:27:20 +02:00
Peter Rajnoha
32ae07cef1 pv_write: clean up non-orphan format1 PV write
...to not pollute the common and format-independent code in the
abstraction layer above.

The format1 pv_write has common code for writing metadata and
PV header by calling the "write_disks" fn and when rewriting
the header itself only (e.g. just for the purpose of changing
the PV UUID) during the pvchange operation, we had to tweak
this functionality for the format1 case and we had to assign
the PV the orphan state temporarily.

This patch removes the need for this format1 tweak and it calls
the write_disks with appropriate flag indicating whether this is
a PV write call or a VG write call, allowing for metatada update
for the latter one.

Also, a side effect of the former tweak was that it effectively
invalidated the cache (even for the non-format1 PVs) as we
assigned it the orphan state temporarily just for the format1
PV write to pass.

Also, that tweak made it difficult to directly detect whether
a PV was part of a VG or not because the state was incorrect.

Also, it's not necessary to backup and restore some PV fields
when doing a PV write:

  orig_pe_size = pv_pe_size(pv);
  orig_pe_start = pv_pe_start(pv);
  orig_pe_count = pv_pe_count(pv);
  ...
  pv_write(pv)
  ...
  pv->pe_size = orig_pe_size;
  pv->pe_start = orig_pe_start;
  pv->pe_count = orig_pe_count;

...this is already done by the layer below itself (the _format1_pv_write fn).

So let's have this cleaned up so we don't need to be bothered
about any 'format1 special case for pv_write' anymore.
2013-03-25 15:08:26 +01:00
Alasdair Kergon
08f1ddea6c Use __attribute__ consistently throughout. 2010-07-09 15:34:40 +00:00
Dave Wysochanski
b4a9a2d313 Refactor format1 vg->pvs list add and vg->pv_count.
Refactor adding to the vg->pvs list and incrementing the count, which
will allow further refactoring.  Should be no functional change.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-04-06 14:04:20 +00:00
Milan Broz
494b4cec7b Tidy format1 import LV function.
Later patch initializes lv->vg after the LV structure is prepared,
so pass through cmd context and do not use vg->cmd here.
Also move LV id calculation (which uses lv->vg too).

Also properly free memory pool if operation fails.
2009-05-13 21:24:12 +00:00
Alasdair Kergon
2c44337bd5 Right, a simple build (without options) is working again. 2008-11-03 22:14:30 +00:00
Alasdair Kergon
8c5bcdabab Improve the way VGs with PVs missing are handled so manual intervention
is required in fewer circumstances.  (mornfall)
2008-09-19 06:42:00 +00:00
Alasdair Kergon
be6845999b Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-20 20:55:30 +00:00
Alasdair Kergon
4dc0ec2253 Adjust some alignments for ia64 and sparc.
(Some of the changes are probably unnecessary.)
2006-11-30 23:11:42 +00:00
Alasdair Kergon
b16b9c2bf1 Set PV size to current device size if it is found to be zero. 2006-10-19 12:53:47 +00:00
Alasdair Kergon
ee37789be0 Separate out LVM1_PE_ALIGN. 2006-08-17 19:15:27 +00:00
Alasdair Kergon
72b2cb613a Make SIZE_SHORT the default for display_size().
Fix some memory leaks in error paths found by coverity.
Use C99 struct initialisers.
Move DEFS into configure.h.
Clean-ups to remove miscellaneous compiler warnings.
2006-05-09 21:23:51 +00:00
Alasdair Kergon
b810c54700 sign fix 2006-05-04 09:33:42 +00:00
Alasdair Kergon
a5fe5a7cdd Fix vgexport/vgimport to set/reset PV exported flag so pv_attr is correct.
Add vgid to struct physical_volume and pass with vg_name to some functions.
2006-04-12 21:23:04 +00:00
Alasdair Kergon
a14aa9d8c3 Capture vgid in more places. 2006-04-10 22:09:00 +00:00
Alasdair Kergon
2262b32057 Use hash, bitset, malloc, pool from libdevmapper. 2005-10-16 23:03:59 +00:00
Alasdair Kergon
4922197a33 Begin to separate out segment types. 2004-05-04 21:25:57 +00:00
Alasdair Kergon
6ec6994107 Compress any (obsolete) long LVM1 pvids encountered. 2004-05-04 18:38:11 +00:00
Alasdair Kergon
6606c3ae81 Update copyright notices. 2004-03-30 19:35:44 +00:00
Alasdair Kergon
a0313876e7 move hostname into global 2004-03-08 17:25:59 +00:00
Alasdair Kergon
50b39413ac Relax restriction on pe_start location when re-writing LVM1 metadata. 2003-12-09 17:51:39 +00:00
Alasdair Kergon
fee16e1049 Cope better with LVM1 minor numbers & LV numbers. 2003-11-06 16:58:38 +00:00
Alasdair Kergon
10f57523d9 Fix vgimport fix to work outside debug mode. 2003-07-15 01:26:24 +00:00
Alasdair Kergon
eaabdc26ce Fix detection of exported LVM1 volume groups. 2003-07-13 11:07:25 +00:00
Alasdair Kergon
8ef2b021ed Default stripesize 64k & config file setting for it;
Clear many compiler warnings (i386) & associated bugs - hopefully without
introducing too many new bugs:-)  (Same exercise required for other archs.)
Default compilation has optimisation - or else use ./configure --enable-debug
2002-12-19 23:25:55 +00:00
Alasdair Kergon
d1d9800ef1 Refactoring. 2002-11-18 14:01:16 +00:00
Alasdair Kergon
25b733809a Merge with text format branch.
Lots of changes/very little testing so far => there'll be bugs!

Use 'vgcreate -M text' to create a volume group with its metadata stored
in text files.  Text format metadata changes should be reasonably atomic,
with a (basic) automatic recovery mechanism if the system crashes while a
change is in progress.

Add a metadata section to lvm.conf to specify multiple directories if
you want (recommended) to keep multiple copies of the metadata (eg on
different filesystems).

e.g. metadata {
        dirs = ["/etc/lvm/metadata1","/usr/local/lvm/metadata2"]
}

Plenty of refinements still in the pipeline.
2002-04-24 18:20:51 +00:00
Heinz Mauelshagen
f48d3bcbd0 First cut on "pvcreate -s" 2002-02-15 01:26:16 +00:00
Joe Thornber
0a9f8bcf97 o First pass at format1 snapshot support. 2002-02-13 11:43:29 +00:00
Joe Thornber
7d68b08028 o First changes to add snapshot support.
I'm taking a different route from LVM1 here in that snapshots are a
seperate entity from the logical volumes, I think of them as an
application of an LV (or two lvs rather).  As such there is a list of
snapshots held against the vg, and there is *not* a SNAPSHOT, or
SHAPSHOT_ORG flag in lv->status.
2002-02-12 16:31:31 +00:00
Alasdair Kergon
812c699c8d Basic support for persistent minor numbers;
slightly different from the current LVM1 method.

  lvcreate --persistent y  --minor 10   (to specify when created)
  lvchange --persistent n  (to turn off)
  lvchange --persistent y  --minor 11   (to change)

--persistent uses a new LV status flag stored on disk
minor number is stored on disk the same way as LVM1 does
(but major number stored is 0; any LVM1 major/minor setting gets lost)

  lvchange -ay --minor 12 (to activate using minor 12, regardless of the
                           on-disk setting, which doesn't get changed)

--minor == -m
--persistent == -M
2002-02-01 17:54:39 +00:00
Alasdair Kergon
f53c6aa66e o Basic support for exporting (but importing not completed yet).
o When volume group does not have write flag set, prevent changes to it.
o Preparation for partial activation (not completed yet).
2002-01-29 17:23:33 +00:00
Joe Thornber
d8fb03c714 o Tidy 2002-01-25 13:41:13 +00:00
Alasdair Kergon
3d2d379ce4 Have a pe_total check using theoretically big number instead of the
unnecessarily small limit LVM1 imposes in vgcreate (but not vgextend)
2002-01-24 23:35:56 +00:00
Heinz Mauelshagen
ff783e52c9 removed ~64limit for PEs per PV agk introduced 2002-01-24 19:20:35 +00:00
Alasdair Kergon
0d89ea9918 Impose max PE limit for each PV. 2002-01-24 17:24:32 +00:00
Alasdair Kergon
add7dc2d5a o pvcreate --uuid to specify the uuid (required before using vgcfgrestore
onto a new device).  uuid specified must not already exist on the system.
o More message tidying.
o When checking for label, only read PV metadata.
o Add ataraid.  [Needs moving into config/defaults files.]
2002-01-16 18:10:08 +00:00
Alasdair Kergon
5238b63f1a Miscellaneous tidying 2001-11-14 13:52:38 +00:00
Joe Thornber
29aa6d5850 o Added dev_open and dev_close functions
o  Changed disk-rep to use these

o  if NDEBUG is not defined the dev_cache will check for open devices on
   teardown.

I was hoping this would speed things up.  But I'm still getting:

reti:/home/joe/sistina/LVM2/tools# time ./lvm vgchange -a n
  Volume group vg0 successfully changed

real    0m5.751s
user    0m0.060s
sys     0m0.070s

even though I have only 1 device with the vg on it passing the filters.
2001-11-14 10:01:52 +00:00
Alasdair Kergon
7858f6fb16 o Added lvextend
o Full signed arguments to lvreduce/lvextend
o Consistent lv_number/pe map use
o Populate pv->pe_allocated
o Fixes for allocation/writing of multiple LVs
2001-11-09 22:01:04 +00:00
Joe Thornber
80f9662b05 o adjacent extents are now merged into a single target when activating. 2001-11-05 13:37:13 +00:00
Alasdair Kergon
0a5e4a1442 o Changes to activation interface
o Add pointer lv->vg
o Some naming tweaks to improve clarity
2001-10-31 17:59:52 +00:00
Joe Thornber
1b9fcf48b1 o LGPL list implementation 2001-10-31 12:47:01 +00:00
Alasdair Kergon
aa290eb285 vgcreate basic extent size validation 2001-10-15 20:29:15 +00:00
Joe Thornber
6b6a344e09 o a very quick hack to get vg_number right 2001-10-11 14:10:18 +00:00
Joe Thornber
ece1fe835c o vg->pv_act 2001-10-11 13:05:55 +00:00