From: agk@sourceware.org <agk@sourceware.org>
To: lvm-devel@redhat.com
Subject: LVM2 lib/metadata/lv.c lib/metadata/metadata.h ...
Date: 9 Sep 2011 01:15:20 -0000 [thread overview]
Message-ID: <20110909011520.6664.qmail@sourceware.org> (raw)
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: agk at sourceware.org 2011-09-09 01:15:18
Modified files:
lib/metadata : lv.c metadata.h thin_manip.c
man : lvs.8.in
Log message:
Append z to lv_attr if new blocks will be zeroed.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/lv.c.diff?cvsroot=lvm2&r1=1.26&r2=1.27
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/metadata.h.diff?cvsroot=lvm2&r1=1.255&r2=1.256
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/thin_manip.c.diff?cvsroot=lvm2&r1=1.3&r2=1.4
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/man/lvs.8.in.diff?cvsroot=lvm2&r1=1.15&r2=1.16
--- LVM2/lib/metadata/lv.c 2011/09/09 00:54:49 1.26
+++ LVM2/lib/metadata/lv.c 2011/09/09 01:15:18 1.27
@@ -308,9 +308,10 @@
{
percent_t snap_percent;
struct lvinfo info;
+ struct lv_segment *seg;
char *repstr;
- if (!(repstr = dm_pool_zalloc(mem, 8))) {
+ if (!(repstr = dm_pool_zalloc(mem, 9))) {
log_error("dm_pool_alloc failed");
return 0;
}
@@ -405,6 +406,13 @@
else
repstr[6] = '-';
+ if ((lv_is_thin_volume(lv) && (seg = first_seg(lv)) && seg->pool_lv && (seg = first_seg(seg->pool_lv))) ||
+ (lv_is_thin_pool(lv) && (seg = first_seg(lv))) &&
+ seg->zero_new_blocks)
+ repstr[7] = 'z';
+ else
+ repstr[7] = '-';
+
out:
return repstr;
}
--- LVM2/lib/metadata/metadata.h 2011/09/08 16:41:19 1.255
+++ LVM2/lib/metadata/metadata.h 2011/09/09 01:15:18 1.256
@@ -372,7 +372,7 @@
struct lv_segment *find_seg_by_le(const struct logical_volume *lv, uint32_t le);
/* Find pool LV segment given a thin pool data or metadata segment. */
-struct lv_segment *find_pool_seg(struct lv_segment *seg);
+struct lv_segment *find_pool_seg(const struct lv_segment *seg);
/*
* Remove a dev_dir if present.
--- LVM2/lib/metadata/thin_manip.c 2011/09/08 16:41:19 1.3
+++ LVM2/lib/metadata/thin_manip.c 2011/09/09 01:15:18 1.4
@@ -61,7 +61,7 @@
return remove_seg_from_segs_using_this_lv(seg->pool_lv, seg);
}
-struct lv_segment *find_pool_seg(struct lv_segment *seg)
+struct lv_segment *find_pool_seg(const struct lv_segment *seg)
{
struct lv_segment *pool_seg;
--- LVM2/man/lvs.8.in 2011/09/09 00:54:49 1.15
+++ LVM2/man/lvs.8.in 2011/09/09 01:15:18 1.16
@@ -94,6 +94,8 @@
equivalents using the md raid kernel driver all appear as (r).
Snapshots using the original device-mapper driver appear as (s); whereas
snapshots of thin volumes using the new thin provisioning driver appear as (t).
+.IP 8 3
+Newly-allocated data blocks are overwritten with blocks of (z)eroes before use.
.RE
.TP
.I \-\-segments
reply other threads:[~2011-09-09 1:15 UTC|newest]
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