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When an LV is to be resynced, the metadata areas are cleared and the
LV is reactivated. This is true for mirroring and will also be true
for RAID LVs. We restructure the code in lvchange_resync() so that we
keep all the common steps necessary (validation of ability to resync,
deactivation, activation of meta/log devices, clearing of those devices,
etc) and place the code that will be divergent in separate functions:
detach_metadata_devices()
attach_metadata_devices()
The common steps will be processed on lists of metadata devices. Before
RAID capability is added, this will simply be the mirror log device (if
found).
This patch lays the ground-work for adding resync of RAID LVs.
By changing the conditional for resyncing mirrors with core-logs a
bit, we can short-circuit the rest of the function for that case
and reduce the amount of indenting in the rest of the function.
This cleanup will simplify future patches aimed at properly handling
the resync of RAID LVs.
We cannot add images to a RAID array while it is not in-sync. The
kernel will simply reject the table, saying:
'rebuild' specified while array is not in-sync
Now we check to ensure the LV is in-sync before attempting image
additions.
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.
The 'test' subdir needs to be processed before 'tools' subdir
for distclean as all the cmd names are read from 'tools/.commands'
file. Otherwise we'd end up with dangling symlinks in 'tools' subdir.
If we were defining a section (which is a node without a value) and
the value was created automatically on dm_config_create_node call,
we were wasting resources as the next step after creating the config
node itself was assigning NULL for the node's value.
The dm_config_node_create + dm_config_create_value sequence should be
used instead for settings and dm_config_node_create alone for sections.
The majority of the code already used the correct sequence. Though
with dm_config_node_create fn creating the value as well, the pool
memory was being trashed this way.
This patch removes the node value initialization on dm_config_create_node
fn call and keeps it for the direct dm_config_create_value fn call.
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().
