mirror of
git://sourceware.org/git/lvm2.git
synced 2025-01-03 05:18:29 +03:00
lv_status_r has been fixed-up so that it supports infinite LV stacking
(It does not yet follow 'log_lv' or 'origin' links.)
This commit is contained in:
Jonathan Earl Brassow
parent
1e094d3428
commit
ab999c86cc
250
scripts/gdbinit
250
scripts/gdbinit
@ -34,13 +34,35 @@ printf "\n\n"
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set follow-fork-mode child
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define first_seg
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set $__lv=(struct logical_volume *)$arg0
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# Conventions:
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# foo : function named 'foo' available to user
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# __foo : an internal function
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#
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# External functions should have a corresponding 'document'
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# section. Internal functions should have leading comments
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if ($__lv->segments.n == &$__lv->segments)
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printf "No segments (list empty)\n"
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#
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# __first_seg <return> <LV>
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define __first_seg
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set $arg0 = 0x0
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set $_lv = (struct logical_volume *)$arg1
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if ($_lv->segments.n != &$_lv->segments)
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set $arg0 = (struct lv_segment *)$_lv->segments.n
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end
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end
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define first_seg
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set $_seg = 0
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set $_lv=(struct logical_volume *)$arg0
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__first_seg $_seg $_lv
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if ($_seg)
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p $_seg
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else
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p (struct lv_segment *)$__lv->segments.n
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printf "No segments (list empty)\n"
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end
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end
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@ -53,22 +75,49 @@ WARNING: If the list pointer in 'struct lv_segment' moves,
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this function will be wrong.
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end
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define seg_item
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set $__seg=(struct lv_segment *)$arg0
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set $__index=$arg1
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set $__area=$__seg->areas[$__index]
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set $__type=$__area.type
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#
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# __seg_item <return> <seg> <index>
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define __seg_type
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set $arg0 = 0x0
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set $_seg = (struct lv_segment *)$arg1
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set $_index= $arg2
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set $_area = $_seg->areas[$_index]
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set $_type = $_area.type
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if ($__type == AREA_PV)
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p $__area.u.pv.pvseg->pv
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set $arg0 = $_type
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end
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#
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# __seg_item <return> <seg> <index>
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define __seg_item
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set $arg0 = 0x0
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set $_seg = (struct lv_segment *)$arg1
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set $_index= $arg2
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if ($_index < $_seg->area_count)
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set $_area = $_seg->areas[$_index]
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set $_type = $_area.type
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if ($_type == AREA_PV)
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set $arg0 = $_area.u.pv.pvseg->pv
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else
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if ($__type == AREA_LV)
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p $__area.u.lv.lv
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if ($_type == AREA_LV)
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set $arg0 = $_area.u.lv.lv
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end
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end
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end
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end
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define seg_item
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set $_item = 0x0
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__seg_item $_item $arg0 $arg1
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if ($_item)
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p $_item
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else
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printf "AREA_UNASSIGNED or invalid\n"
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end
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end
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end
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document seg_item
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Returns the pointer to the LV or PV for the indexed area of a segment
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@ -165,9 +214,9 @@ end
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define seg_status
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set $_seg=(struct lv_segment *)$arg0
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printf "(%s) seg->status:", $_seg->lv->name
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printf "[ (%s) seg->status:", $_seg->lv->name
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__status $_seg
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printf "\n"
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printf " ]\n"
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end
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document seg_status
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@ -176,67 +225,29 @@ Display the flags that are set on an lv_segment.
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Usage: lv_status <(struct lv_segment *)>
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end
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define __lv_status_r
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set $_lv=(struct logical_volume *)$arg0
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set $_seg_list_head = &$_lv->segments
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set $_s = $_lv->segments.n
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#
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# get_only_segment_using_this_lv <return> <LV>
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define __get_only_segment_using_this_lv
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set $arg0 = 0x0
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set $_lv=(struct logical_volume *)$arg1
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set $_seg_list_head = &$_lv->segs_using_this_lv
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set $_s = $_lv->segs_using_this_lv.n
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set $_i = 0
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# lv_status $_lv
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printf "%s%s->status:", $arg1, $_lv->name
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__status $_lv
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printf "\n"
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while (($_s != $_seg_list_head) && ($_i < 100))
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set $_seg_list = (struct seg_list *)$_s
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set $_seg = (struct lv_segment *)$_seg_list->seg
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if ($_s == $_seg_list_head)
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printf "[ No segments for %s ]\n", $_lv->name
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else
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set $_seg = (struct lv_segment *)$_s
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while ($_s != $_seg_list_head)
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printf "%s[ %s->seg(%d)->status:", $arg1, $_lv->name, $_i
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__status $_seg
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printf " ]\n"
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set $_j = 0
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while ($_j < $_seg->area_count)
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set $_area=$_seg->areas[$_j]
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set $_type=$_area.type
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if ($_type == AREA_LV)
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# Damn it, gdb does not have scoping so functions are not reentrant
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# __lv_status_r $_area.u.lv.lv " "
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# Next couple lines will get us through a non-stacked mirror...
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printf "* "
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lv_status $_area.u.lv.lv
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set $barf = (struct lv_segment *)($_area.u.lv.lv)->segments.n
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if ($barf != &($_area.u.lv.lv)->segments)
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printf "* "
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printf "[ %s->seg(0)->status:", $_lv->name
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__status $barf
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printf " ]\n"
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end
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end
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set $_j++
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end
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set $_s = $_s->n
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set $_seg = (struct lv_segment *)$_s
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set $_i++
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end
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end
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printf "\n"
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set $_s = $_s->n
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end
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define lv_status_r
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__lv_status_r $arg0 ""
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if ($_i > 1)
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printf "More than %s using %s\n", ($_i > 99) ? "100 segments" : "one segment", $_lv->name
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end
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if ($_i == 1)
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set $arg0 = $_seg
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end
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document lv_status_r
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Display the status flags of an LV and its sub_lvs.
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Usage: lv_status_r <LV ptr>
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This function is useful for checking that all the LVs that
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compose a logical volume have the correct flags set (and also
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their associated lv_segments)
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end
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define segs_using_this_lv
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@ -259,8 +270,8 @@ define segs_using_this_lv
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else
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printf " [seg found in %s]\n", $_seg->lv->name
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end
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set $_i++
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set $_s = $_s->n
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set $_i = $_i + 1
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end
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end
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@ -287,6 +298,101 @@ Example:
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0) seg: 0x92d360 [seg found in lv]
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end
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#
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# __next_area_index <return> <seg> <seg_item>
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define __next_area_index
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set $arg0 = 0x0
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set $_seg = (struct lv_segment *)$arg1
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set $_item = 0x0
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set $_i = 0
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__seg_item $_item $_seg $_i
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while ($_item && ($_item != $arg2))
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set $_i++
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__seg_item $_item $_seg $_i
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end
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# $_i points to current, now get next (if there)
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set $_i++
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__seg_item $_item $_seg $_i
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if ($_item)
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set $arg0 = $_i
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end
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end
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#
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# __lv_status_r <LV>
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# Decend tree, printing LV and seg status as we go. This
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# performs a depth first approach (but can't come up)
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# or
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# __lv_status_r <sub_lv> <seg using sub_lv>
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# Try continuing decent of tree by first shifting to the
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# next 'area' in the seg ($arg1). If no more areas, then
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# try going to the next segment.
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define __lv_status_r
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if ($argc == 1)
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set $_lv=(struct logical_volume *)$arg0
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set $_seg_list_head = &$_lv->segments
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set $_s = $_lv->segments.n
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set $_area_index = 0
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printf "\n"
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lv_status $_lv
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else
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set $_seg = (struct lv_segment *)$arg1
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__next_area_index $_area_index $_seg $arg0
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# Don't fuck this up. We need the next two lines here.
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set $_lv=(struct logical_volume *)$_seg->lv
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set $_seg_list_head = &$_lv->segments
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set $_s = (struct dm_list *)$_seg
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if (!$_area_index)
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set $_s = $_s->n
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end
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end
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if ($_s == $_seg_list_head)
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if ($argc == 1)
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printf "[ No segments for %s ]\n", $_lv->name
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end
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else
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set $_seg = (struct lv_segment *)$_s
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set $_type = 0x0
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if (!$_area_index)
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seg_status $_seg
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end
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__seg_type $_type $_seg $_area_index
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if ($_type == AREA_LV)
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__seg_item $_lv $_seg $_area_index
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__lv_status_r $_lv
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else
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__get_only_segment_using_this_lv $_seg $_lv
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if ($_seg)
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__lv_status_r $_lv $_seg
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end
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end
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end
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end
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define lv_status_r
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__lv_status_r $arg0
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end
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document lv_status_r
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Display the status flags of an LV and its sub_lvs.
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Usage: lv_status_r <LV ptr>
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This function is useful for checking that all the LVs that
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compose a logical volume have the correct flags set (and also
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their associated lv_segments)
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end
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define lv_is_mirrored
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set $_lv=(struct logical_volume *)$arg0
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set $_fs=(struct lv_segment *)$_lv->segments.n
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