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Cmirrord has endian bugs, which cause failure to lvcreate a mirrored lv
on s390.
- data_size is uint32, should not use xlate64 to convert, which will
cause data_size 0 after xlate.
- request_type and data_size still used by local(v5_data_switch),
should convert later. If request_type xlate too early, it will
cause request_type judge error; if data_size xlate too early, it
will cause coredump in case DM_ULOG_CLEAR_REGION.
- when receiving package in clog_request_from_network. vp[0] will always
be little endian. We could use xlate64(vp[0]) == vp[0] to decide if
the local node is little endian or not.
Signed-off-by: Lidong Zhong<lzhong@suse.com> & Liuhua Wang <lwang@suse.com>
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Use lv_is_* macros throughout the code base, introducing
lv_is_pvmove, lv_is_locked, lv_is_converting and lv_is_merging.
lv_is_mirror_type no longer includes pvmove.
This is probably better approach than 3880ca5eca.
If dm module is not loaded during dm_is_dm_major call, there are no
lines for dm in /proc/devices, of course. Normally, dm_is_dm_major
is called to check existing devices, hence if module is not loaded,
we can expect there's no DM device present at the same time so we
can directly return 0 here (meaning the major number being inspected
is not dm device's one).
See also https://bugzilla.redhat.com/show_bug.cgi?id=1059711.
For dm_is_dm_major to determine whether the major number given as
an argument belongs to a DM device, libdm code needs to know what
the actual DM major is to do the comparison.
It may happen that the dm-mod module is not loaded during this
call and so for the completness let's try our best before we start
giving various errors - we can still make use of dm-mod autoloading,
though only since kernels 2.6.36 where this feature was introduced.
Caused by recent changes - a7be3b12df.
If global filter was not defined, then part of the code
creating composite filter (the cmd->lvmetad_filter) incorrectly
increased index value even if this global filter was not created
as part of the composite filter. This caused a gap with "NULL"
value in the composite filter array which ended up with the rest
of the filters after the gap to be ignored and also it caused a mem
leak when destroying the composite filter.
We used to print an error message whenever we tried to deal with devices that
lvmetad knew about but were rejected by a client-side filter. Instead, we now
check whether the device is actually absent or only filtered out and only print
a warning in the latter case.
If a PV label is exposed both through a composite device (MD for example) and
through its component devices, we always want the PV that lvmetad sees to be the
composite, since this is what all LVM commands (including activation) will then
use. If pvscan --cache is triggered for multiple clones of the same PV, the last
to finish wins. This patch basically re-arranges the filters so that
component-device filters are part of the global_filter chain, not of the
client-side filter chain. This has a subtle effect on filter evaluation order,
but should not alter visible semantics in the non-lvmetad case.
The code in dev_iter_create assumes that if a filter can be wiped, doing so will
always trigger a call to _full_scan. This is not true for composite filters
though, since they can always be wiped in principle, but there is no way to know
that a component filter inside will exist that actually triggers the scan.
This message should be printed only for activation commands,
however since the handling of this flag is not correct
(rhbz 1140029) and will require further changes,
do now just a minor change and switch message into log_debug
(so it's not printed i.e. with every 'lvs -v')
Use lv_update_and_reload() and lv_update_and_reload_origin()
to handle write/suspend/commit/resume sequence.
In few places this properly handle vg_revert() after suspend failure,
and also ensures there is metadata backup after successful vg_commit().
Fix rename operation for snapshot (cow) LV.
Only the snapshot's origin has the lock and by mistake suspend
and resume has been called for the snapshot LV.
This further made volumes unusable in cluster.
So instead of suspend and resuming list of LVs,
we need to just suspend and resume origin.
As the sequence write/suspend/commit/resume
is widely used in lvm2 code base - move it to
new lv_update_and_reload function.
