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Commit Graph

119 Commits

Author SHA1 Message Date
Alasdair Kergon
914c97239f Another sync point - numerous fixes & clean ups. 2003-07-04 22:34:56 +00:00
Alasdair Kergon
26e7f2e0c4 Tidy various pre-processing incl. making libdl optional. 2003-03-24 18:08:53 +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
6b4c9ff740 Some partial VG support with format_text. 2002-04-30 17:12:37 +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
Alasdair Kergon
b849de1d18 Fix the device cache to cope reasonably safely with device name changes.
This should be a rare occurrence so the aim is to recover if it's
straightforward to do so, otherwise just to abort the operation.
If people *knowingly* change device names, they should always run vgscan
afterwards.

A few bytes of memory gets leaked inside a pool each time an alias
has to be discarded - it's not worth restructuring the code to reuse it.

More of LVM2 needs updating to pass device objects (or uuids) about
instead of pathnames so that resolution of pathname->object only happens
once per operation.

dev_cache_get() should now always return the *current* device at the path given

dev_name_confirmed() replaces dev_name() whenever it's important to
know that name for the device is still current (ie when opening it).
If the cache doesn't know a current name, the function fails.

dev_open() guarantees that the file descriptor returned is for the dev_t
of the device structure it was passed.
2002-01-24 23:16:19 +00:00
Joe Thornber
6036e5e0f7 o split the uuid -> device map out from vgcache
o  roll vgcache back to agk's implementation, we'll revisit this as part
   of the cluster integration.

o  change the extra_info field in a label to be a void *
2002-01-15 10:24:48 +00:00
Patrick Caulfield
52864eda2e Add a dev_get_sectsize call. 2001-12-11 10:18:49 +00:00
Alasdair Kergon
d9bc7ffe61 lvrename (without reactivation) 2001-11-15 17:27:45 +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
Joe Thornber
78fc479a69 o Deal with sparse lv arrays (on disk)
o  new fn. dev_zero which zero's an area of a device
2001-11-13 18:52:52 +00:00
Joe Thornber
1b9fcf48b1 o LGPL list implementation 2001-10-31 12:47:01 +00:00
Joe Thornber
c7f0b573ac o use dev_name(dev) to get the name of a device, this operation is cheap
since it just get's the first alias.
2001-10-25 14:04:18 +00:00
Joe Thornber
890b537974 o added aliases list to struct device. 2001-10-25 11:34:55 +00:00
Joe Thornber
72a5e12b5c o pvcreate
o added uuid unit

o stubbed partition stuff
2001-10-12 10:32:06 +00:00
Alasdair Kergon
317919c7c6 vgrename & pvchange outlines 2001-10-03 17:03:25 +00:00
Joe Thornber
8696e06602 o I've moved the dev-cache and dev-io into here since this directory has a
better name.  dev-mgr will be removed at some point.
2001-10-03 12:41:29 +00:00
Alasdair Kergon
269930c0da lvactivate checkpoint commit 2001-09-25 12:49:28 +00:00