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Repairing missing devices does not work reliably
with lvmetad, so disable lvmetad before repair.
A standard lvmetad refresh (pvscan --cache) will
enable lvmetad again.
Commit 07ded8059c assumed that the mirror is blocked which is not the case.
It is accessible, degraded and in need of repair because some of its legs
(partially) failed. Any auto-repair via dmeventd fails though because
of lvmetad not providing proper data about the failed PV(s). That's why
this workaround got introduced in commit 76f6951c3e until we get to
the lvmetad interaction core issue.
Mind any mirror auto-repair failure is caused by such lvmetad interaction
problems not yet solved so disabling lvmetad works as a resort as elaborated
on in the related bz.
Reintroducing the interim solution.
Resolves: rhbz1380521
Effectively revert whole 76f6951c3e.
We need to figure out some other solution.
At this moment usage of --config with 'repair' of blocked mirror
is 'freezing' combination.
For each section 8 man page, a .8_gen file is created from one of:
.8_main - Old-style man page - content used directly
.8_des and .8_end - Description and end section of a generated page
.8_pregen - Pre-generated page used if the generator fails
Other man sections are not generated and use the suffix .5_main or .7_main.
Developers should use 'make generate' to regenerate the .8_pregen files.
When a given command:
- matches command definition A based on required options,
but uses optional options that are not accepted by A.
- matches command definition B based on required options,
(but fewer required items than A), and uses no
unaccepted optional options.
then B is the correct choice. Command A would fail because
of the unaccepted optional options. The logic was mistakenly
letting A win because it had a greater number of required option
matches, without accounting for the optional option mismatches.
Systematically outline every combination of:
--type striped, --type mirror, --type raid, --mirrors, --stripes
and make sure each is assigned to one specific cmd def.
This revealed that a new command def is needed for
lvcreate that uses both --mirrors and --stripes
but no --type option.
The use of LVCREATE_RAID shortcut for an option set
resulted in mirrors/stripes being included in optional
opts set when they were already in the required list.
Sending %d as format argument in lvmetad_vg_remove_pending() will cause
segfaults in config_make_nodes_v() when va_arg() casts to int64_t. Also, it is
clearly advertised in the lvm source code that using plain %d is prohibited, so
let's switch to FMTd64.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Require that the path argument to dmfilemapd be an absolute path
and document this in tool output, libdevmapper.h and dmfilemapd.8.
The check is also enforced by dm_stats_start_filemapd() to avoid
forking a new process with an invalid path argument.
The initial check on argc incorrectly returns 1 when the wrong
number of arguments are present, causing a segfault in main()
when no arguments are given:
# dmfilemapd
Wrong number of arguments.
usage: dmfilemapd <fd> <group_id> <path> <mode> [<foreground>[<log_level>]]
Segmentation fault (core dumped)
Commit f4b30b0dae was about displaying visible LV size
when reshape space is allocated. Take parity devices
into account when displaying the user visible LV size.
As was recently done with relative signes for sizes/extents,
limit the signs used with the mirrors option, e.g.
lvcreate --mirrors now does not accept or advertise an
optional minus sign with the value. lvconvert --mirrors
accepts +|-.
Add a warning about maximum supported numbers of stripes
with striped LVs realtive to RAID conversions.
Add examples for a more elaborate, multi-step conversion
from linear to striped (and vice versa).
Shrink lvs examples output.
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
