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It is necessary when creating a RAID LV to clear the new metadata areas.
Failure to do so could result in a prepopulated bitmap that would cause
the new array to skip syncing portions of the array. It is a requirement
that the metadata LVs be activated and cleared in the process of creating.
However in test mode, this requirement should be lifted - no new LVs should
be created or written to.
When printing a message for the user and the lv_segment pointer is available,
use segtype->ops->name() instead of segtype->name. This gives a better
user-readable name for the segment. This is especially true for the
'striped' segment type, which prints "linear" if there is an area_count of
one.
We should check whether the fd is opened before trying to reopen it.
For example, the stdin is closed in test/lib/harness.c causing the
test suite to fail.
Fix setvbuf code by closing and reopening stream before changing buffer.
But we need to review what this code is doing embedded inside a library
function rather than the simpler original form being run independently
at the top of main() by tools that need it.
Accept -q as the short form of --quiet.
Suppress non-essential standard output if -q is given twice.
Treat log/silent in lvm.conf as equivalent to -qq.
Review all log_print messages and change some to
log_print_unless_silent.
When silent, the following commands still produce output:
dumpconfig, lvdisplay, lvmdiskscan, lvs, pvck, pvdisplay,
pvs, version, vgcfgrestore -l, vgdisplay, vgs.
[Needs checking.]
Non-essential messages are shifted from log level 4 to log level 5
for syslog and lvm2_log_fn purposes.
This patch adds support for RAID10. It is not the default at this
stage. The user needs to specify '--type raid10' if they would like
RAID10 instead of stacked mirror over stripe.
Adding couple INTERNAL_ERROR reports for unwanted parameters:
Ensure the 'top' metadata node cannot be NULL for lvmetad.
Make obvious vginfo2 cannot be NULL.
Report internal error if handler and vg is undefined.
Check for handle in poll_vg().
Ensure seg is not NULL in dev_manager_transient().
Report missing read_ahead for _lv_read_ahead_single().
Check for report handler in dm_report_object().
Check missing VG in _vgreduce_single().
Always store discard setting in LV metadata. (Note that lvcreate_params
doesn't yet use --discard to set the initial value.)
Remove undocumented env var LVM_THIN_VERSION_MIN that has no use on a
live system.
Change verbose 'feature not found' messages to debug.
Use discard_str for string value of discard.
I think it's better not to abbreviate human-readable fields like
'discard' to a single character. Users can truncate it to the
first character themselves if they wish.
It's confusing to use the variable name discard for different things in
different places - use discard_str when it's a string not the enum.
Respond with "unknown" rather than a NULL pointer if there's an
internal error and the discard value is invalid.
Don't accept 'no_passdown' or 'no-passdown' variants in the LVM
metadata: this is written by the program so should only ever contain
"nopassdown" and should be validated strictly against that.
Commit 8767435ef8 allowed RAID 4/5/6
LV to be extended properly, but introduced a regression in device
replacement - a critical component of fault tolerance.
When only 1 or 2 drives are being replaced, the 'area_count' needed
can be equal to the parity_count. The 'area_multiple' for RAID 4/5/6
was computed as 'area_count - parity_devs', which could result in
'area_multiple' being 0. This would ultimately lead to a division by
zero error. Therefore, in calc_area_multiple, it is important to take
into account the number of areas that are being requested - just as
we already do in _alloc_init.
A regression introduced in 2.02.89 (11e520256b)
caused the lvm dumpconfig <node> to print out
the node as well as its subsequent siblings.
The information about "only_one" mode got lost.
Before this patch (just an example node):
# lvm dumpconfig global/use_lvmetad
use_lvmetad=1
thin_check_executable="/usr/sbin/thin_check"
thin_check_options="-q"
(...all nodes to the end of the section)
With this patch applied:
# lvm dumpconfig global/use_lvmetad
use_lvmetad=1
Add arg support for discard.
Add discard ignore, nopassdown, passdown (=default) support.
Flags could be set per pool.
lvcreate [--discard {ignore|no_passdown|passdown}] vg/thinlv
Reducing a RAID 4/5/6 LV or extending it with a different number of
stripes is still not implemented. This patch covers the "simple" case
where the LV is extended with the same number of stripes as the orginal.
Change 'lv_passes_volumes_filter' fn back to static as it's not
actually needed in the other code (a remnant from devel version).
Fix lvm.conf comment referencing '--autoactivate' which was finally
decided to be '--activate ay'.
If _alloc_parallel_area for raid devices chooses an area already used
up, it doesn't notice that it has no space left in it and leaves
later code trying to place a zero-length area into the LV.
https://bugzilla.redhat.com/832596
One can use "lvcreate --aay" to have the newly created volume
activated or not activated based on the activation/auto_activation_volume_list
this way.
Note: -Z/--zero is not compatible with -aay, zeroing is not used in this case!
When using lvcreate -aay, a default warning message is also issued that zeroing
is not done.
Define an 'activation_handler' that gets called automatically on
PV appearance/disappearance while processing the lvmetad_pv_found
and lvmetad_pv_gone functions that are supposed to update the
lvmetad state based on PV availability state. For now, the actual
support is for PV appearance only, leaving room for PV disappearance
support as well (which is a more complex problem to solve as this
needs to count with possible device stack).
Add a new activation change mode - CHANGE_AAY exposed as
'--activate ay/-aay' argument ('activate automatically').
Factor out the vgchange activation functionality for use in other
tools (like pvscan...).
We're refererring to 'activation' all over the code and we're talking
about 'LVs being activated' all the time so let's use 'activation/activate'
everywhere for clarity and consistency (still providing the old
'available' keyword as a synonym for backward compatibility with
existing environments).
