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Code Releases Activity
254 Commits 426 Branches 667 Tags 54 MiB
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Commit Graph

121 Commits

Author SHA1 Message Date
steve
98d264faf4 o Made pending I/O wait uninterruptible 2001-09-14 14:03:02 +00:00
steve
321902a9b5 o New ioctl(): LV_BMAP which is compatible with LVM so that hopefully LILO 
will work. I haven't actually tested that, but this support at least will
   be required.
 2001-09-14 13:45:40 +00:00
Alasdair Kergon
8df5d06f9a Use dmfs_ function name prefix (in line with other file systems). 2001-09-14 13:27:58 +00:00
Patrick Caulfield
e69ea529cc lc->in->f_op->read expects its buffer to be in userspace so surround it in 
set_fs() etc calls
 2001-09-14 12:27:57 +00:00
steve
15405b1119 o As promised earlier, the device registration is now hashed and the 
lists are private to dm-blkdev.c
 2001-09-14 11:25:51 +00:00
Alasdair Kergon
d2f97ce2da Always truncate error file. 2001-09-14 11:15:54 +00:00
Patrick Caulfield
543ca631e9 Don't store things in _devs[-1] - it's not nice. 2001-09-14 10:54:08 +00:00
steve
f184886db1 o Forgot to create slab caches for dm-blkdev.c 
o Misc code tidy
 2001-09-14 10:40:20 +00:00
Alasdair Kergon
8432ab4324 o kmalloc error check 
o error file mode
The 1st Jan 1970 date I'm seeing in /dev is a devfs issue I think.
 2001-09-14 10:06:22 +00:00
steve
6c05b37ca3 Changes to device handling; 
o Only one list of block devices for all tables
 o Locking to ensure that block devices only get opened once
 o Block device handling is now in dm-blkdev.c
 o We open block devices when we create the tables and hold them open until
   the table is destroyed (this prevents the module for the device being
   unloaded after table parsing and before the table is used)
 o We compute the hardsect size when the table is created rather than when
   someone requests it.

Still to fix/change:

 o Probably want to hash the device lists in dm-blkdev.c and also remove refs
   to struct dm_bdev outside this file.
 o Need to ensure that hardsect_size doesn't change when new tables are
   swapped in (maybe this ought to be a per volume parameter and the tables
   will only parse if they match the value for the volume?).

Things are changing fast here, so if you want a stable version of thic code
try checking out yesterdays.
 2001-09-14 09:45:35 +00:00
steve
35f4beeb47 o New code for handling block device registration. Not yet used but checked 
in for backup purposes.
 2001-09-14 08:06:02 +00:00
Alasdair Kergon
cbad7caa68 is_identifier characters 2001-09-13 21:50:38 +00:00
steve
b0388a4012 o Two fixes which Alasdair pointed out. 2001-09-13 20:10:14 +00:00
steve
df3fab4d55 o Tidy in dm-fs.c 
o Magic number is really magic
 o Check on directory names
 2001-09-13 19:41:46 +00:00
steve
da49f88a03 o Forgot to add ref to module. 2001-09-13 19:36:40 +00:00
Alasdair Kergon
e28feceb06 Add dm-parse to makefile 2001-09-13 19:09:23 +00:00
steve
50496a164d o Now we handle target modules correctly 
o Moved the linear target into its own module (not really because it needs to
   be there, but because its useful to have a simple example so people can see
   what we are doing)

Btw, this needs testing properly.
 2001-09-13 18:30:05 +00:00
Alasdair Kergon
6f1dce1572 o Remove hard-coded mount point 
o Fix macro for compilation
 2001-09-13 16:52:50 +00:00
steve
6847776ae7 o Some structures change size with different configs, so always include 
<linux/config.h> first.
 2001-09-13 14:03:42 +00:00
steve
67bd53bdd8 o Some ioctl() commands. 2001-09-13 14:01:13 +00:00
steve
36f9e7c742 o I'm afraid that wu and wl etc. is just too confusing.... I've changed it 
to up_write() and down_write() etc so that you can see what kind of a lock
   it is (otherwise it could be anything.. semaphore, spinlock, spinlock_bh,
   spinlock_irq, br_lock, etc.)
 2001-09-13 11:29:38 +00:00
steve
9462763bbb o Use kmem_cache_destroy() to remove slab cache. 2001-09-13 11:07:08 +00:00
Joe Thornber
a0f180fd48 o first sattab at custom fs. Very rough ATM. 
Mount the dm-fs filesystem on /device-mapper (will fix later).  mkdir
to create a device, inside that directory every file you create is a table
file.  If there are errors <table>.err will appear automagically.  Mv a table
file to ACTIVE to activeate the device.  I'm not happy with mv being the
binding command, symlink would be better.
 2001-09-07 11:34:46 +00:00
Joe Thornber
bf1cf89914 o more tidy ups from Clausen. 2001-09-05 07:48:11 +00:00
Joe Thornber
297a047fb4 o Added two new functions get_child [Andrew Clausen] and get_node. I think 
this makes 'high()' a bit more understandable.
 2001-09-04 10:17:28 +00:00
Joe Thornber
52ffc15ffc o added new constant CHILD_PER_NODE to make things clearer 2001-09-03 08:36:41 +00:00
Joe Thornber
e478c9c693 o Various tidy ups [Andrew Clausen] 2001-09-02 10:49:20 +00:00
Joe Thornber
d004f28074 o added global dm_table_lookup_device(path) 
o changed linear target to : <device_path> <start>
 2001-08-31 18:26:27 +00:00
Joe Thornber
bc68ed8b1d o added reference counting to the destination devices, make sure that the 
destructor for any targets you write call dm_table_remove_device.
 2001-08-31 16:36:56 +00:00
Joe Thornber
04555ae650 o split struct mapped_device into mapped_device and dm_table 
o seperated loading of a table from binding a table to the device

These should allow multiple tables to be managed by dm-fs
 2001-08-31 15:13:33 +00:00
Joe Thornber
e8f62085be o tidy ups 2001-08-31 12:49:31 +00:00
Joe Thornber
f430bffe2a o allocate io_hooks from a slab 2001-08-31 10:25:32 +00:00
Joe Thornber
1f0520634f o stray return -ENXIO in reuqest [Jens Axboe] 2001-08-31 09:43:35 +00:00
Joe Thornber
902d4c31fb o rebuilt 00_latest 2001-08-31 09:14:55 +00:00
Joe Thornber
17364ac09f o split uml part out 2001-08-29 14:23:40 +00:00
Joe Thornber
0b889f8f81 o various little tidy ups 2001-08-29 13:58:48 +00:00
Joe Thornber
40e349ff35 o change format of table line to <start> <len> <target> ... 2001-08-28 14:56:47 +00:00
AJ Lewis
c943b1b1df o Enable building dm modules (called dm-mod) 
o split the patches into config and makefile specific.
 2001-08-28 14:11:55 +00:00
Joe Thornber
912bc1d4e1 o more deferred io stuff 2001-08-28 14:05:22 +00:00
Joe Thornber
cacb1533a3 o added proper suspend/resume support, it now waits for all 'in flight' io's 
to complete.

  
  moved comment to dm.h
 2001-08-28 13:04:44 +00:00
Joe Thornber
f0feaca9d7 o ACtual source code patch 2001-08-24 09:50:16 +00:00
Joe Thornber
b6656f171b o a couple of patches we'll need for deviec-mapper 2001-08-24 09:39:32 +00:00
Joe Thornber
6206ab3931 o you can now load maps repeatedly without hanging 
o tested multiple target map

Driver is now useable
 2001-08-23 17:10:05 +00:00
Joe Thornber
c35fc58b1f o dm_add_target was returning 0 an error when it shouldn't 
o reference count was being checked badly
 2001-08-23 16:45:43 +00:00
Joe Thornber
deed8abed7 o map loads ok now 
o request function appears to work, but something is segfaulting when i
  mke2fs
 2001-08-23 12:35:02 +00:00
Alasdair Kergon
7151ad23f0 Tweak permissions - currently root-only. (no support for non-root ownership 
in procfs except for PIDs)
 2001-08-22 20:10:06 +00:00
Joe Thornber
0166d938af o chagngesd alloc to return 0 on success 2001-08-22 15:59:56 +00:00
Joe Thornber
6194aeddb0 o fs_add and fs_remove actually create/remove the device now 2001-08-22 15:33:08 +00:00
Joe Thornber
903dbf2c30 o added brackets to make t->name = (char *) (t + 1) more explicit 2001-08-22 15:12:31 +00:00
Alasdair Kergon
9380f9ff57 Return 0 on success now. 2001-08-22 15:02:55 +00:00
Joe Thornber
259ed95486 o wu macro was doing a read unlock 
o added dm_fs_add/remveove
 2001-08-22 15:01:09 +00:00
Joe Thornber
2ebc92681e o _tok_cpy was broken 2001-08-22 14:30:30 +00:00
Joe Thornber
195a1ffe13 o fix get_word 
o capy name in when registering targets

o change _line_splitter so it expects the process functions to return zero
  on success
 2001-08-22 14:13:26 +00:00
Joe Thornber
a8c2978185 o _get_workd was always returning the end on iput 2001-08-22 13:52:26 +00:00
Alasdair Kergon
140f97a457 o Initialisation tweaks. 
o Use different major number so it can co-exist with LVM 1.
 2001-08-22 13:46:58 +00:00
Joe Thornber
7f94445a1e o set permissions on /proc/device-mapper/control to -w-w-w 2001-08-22 13:45:28 +00:00
Joe Thornber
82a89aec65 o call dm_init_fs 2001-08-22 13:41:00 +00:00
Joe Thornber
aaccea731e o quick hack to get the proc entry registering 2001-08-21 15:31:50 +00:00
Joe Thornber
29e31d7610 o dm-fs compiles, I've forgotten to register the device in /proc though 2001-08-21 15:24:02 +00:00
Joe Thornber
7f34dffa13 o dm-target compiles 2001-08-21 14:51:41 +00:00
Joe Thornber
fa239e78c9 o dm-table compiles 2001-08-21 14:47:42 +00:00
Joe Thornber
e5da303b43 o make dm.c compile 2001-08-21 14:28:00 +00:00
Joe Thornber
c3211e9b4f o dm_activate/dm_close 2001-08-20 16:12:22 +00:00
steve
268d94c983 dec use count on close. corrects a typo. 
Really the use counts on these modules should be handled at a higher level,
otherwise there are races I think.
 2001-08-20 15:59:22 +00:00
Joe Thornber
0bcacbba58 o implemeted dm_start_table/dm_add_entry/dm_complete_table as used by 
the /proc interface.
 2001-08-20 15:22:44 +00:00
Joe Thornber
8cdc26add9 o changed _dev_lock to a rw_semaphore 2001-08-20 14:06:25 +00:00
Joe Thornber
e0b2238886 o proc interface is getting there. 2001-08-20 13:45:43 +00:00
Joe Thornber
369a2e4029 o missed one 2001-08-20 08:05:51 +00:00
Joe Thornber
c4089e3b51 Just syncing with the office. 
o device-mapper.c has split
 2001-08-20 08:03:02 +00:00
Joe Thornber
9e2e9bc5b8 o added a description 2001-08-16 15:14:07 +00:00
Joe Thornber
a9e44426ed o checked in the new driver, and the uml dir 2001-08-16 08:26:13 +00:00