Jonathan Earl Brassow 6d0aa801a0 Fix for bug 733114. ... When an image is split from a 2-way mirror, the original mirror is converted to a linear device. To do this, the top "layer" must be removed. The segments are transferred from the sub-lv to the top-level LV and the link is severed. The former sub-lv - having its segments transferred - now contains a temporary error target. When the original LV is resumed, the old sub-lv that now contains an error segment is activated and scanned. This is what causes the I/O error messages. There are three ways to fix this problem: 1) Do not set the sub-lv which contains the error target as "visible" before suspending the original LV. This way, when the original is resumed, the sub-lv device node is not created and it is not scanned - avoiding the error messages. The problem with this approach is that if the machine crashes after the resume, it leaves the *hidden* LV in place and the user has a more difficult time noticing that it needs to be cleaned up. Thus, this type of processing is frowned upon. 2) Do like _remove_mirror_images does and suspend the original, then suspend the sub-lv (the error target), then resume the sub-lv, and finally resume the original LV. This seems like extra pointless operations to me, but it does not produce the error message (although, I'm not sure why) and it allows us to leave the visible flag in place. 3) Flag the sub-lv (error target) with a "do not scan" flag. This seems like the cleanest approach, but I have been unable to find the method for doing this. LVs get tagged in such a way by _get_udev_flags, but in this case the resume of the original LV also resumes the error target LV without running it through _get_udev_flags (likely because they are no longer linked). Could there be something wrong in resume_lv? Option #2 was chosen to fix this bug, but it seems like more of a workaround for now.		2011-09-13 13:59:19 +00:00
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activate	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
cache	Use size_t return type	2011-09-01 10:25:22 +00:00
commands	Add missing 'static' for local function	2011-09-02 12:38:43 +00:00
config	Add a new 'thin_pool' output field to 'lvs.	2011-09-09 00:54:49 +00:00
datastruct	Revert the #include changes. Need to fix this at the #include site for now, and	2011-07-18 14:34:33 +00:00
device	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
display	Fix some compile warnings on RHEL5	2011-03-01 20:17:56 +00:00
error	Add lv_activate_opts structure	2011-06-17 14:14:19 +00:00
filters	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
format1	lvcreate parsing for thin provisioning.	2011-09-06 00:26:42 +00:00
format_pool	lvcreate parsing for thin provisioning.	2011-09-06 00:26:42 +00:00
format_text	lvcreate/remove thin_pool and thin volumes (--driverloaded n only)	2011-09-08 16:41:18 +00:00
freeseg	Replace malloc with zalloc when creating segment_type's	2011-03-25 21:59:42 +00:00
label	Report sector containing label in verbose message.	2011-06-01 15:30:36 +00:00
locking	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
log	Trivial, add void to ignore dm_snprinf result	2011-08-11 19:21:42 +00:00
metadata	Fix for bug 733114.	2011-09-13 13:59:19 +00:00
mirror	Replace const usage of dm_config_find_node with more appropriate value-lookup	2011-08-31 15:19:19 +00:00
misc	tdata->tpool	2011-09-06 15:38:44 +00:00
mm	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
raid	Replace const usage of dm_config_find_node with more appropriate value-lookup	2011-08-31 15:19:19 +00:00
replicator	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
report	Add a new 'thin_pool' output field to 'lvs.	2011-09-09 00:54:49 +00:00
snapshot	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
striped	Replace const usage of dm_config_find_node with more appropriate value-lookup	2011-08-31 15:19:19 +00:00
thin	lvcreate/remove thin_pool and thin volumes (--driverloaded n only)	2011-09-08 16:41:18 +00:00
unknown	Move the core of the lib/config/config.c functionality into libdevmapper,	2011-08-30 14:55:15 +00:00
uuid	Revert the #include changes. Need to fix this at the #include site for now, and	2011-07-18 14:34:33 +00:00
zero	Add lv_activate_opts structure	2011-06-17 14:14:19 +00:00
Makefile.in	add thin_manip.c like the other manip files	2011-09-06 19:25:42 +00:00