shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2025-10-23 23:33:15 +03:00
Code Releases Activity

DM RAID: Add ability to throttle sync operations for RAID LVs.

Browse Source 
This patch adds the ability to set the minimum and maximum I/O rate for
sync operations in RAID LVs.  The options are available for 'lvcreate' and
'lvchange' and are as follows:
  --minrecoveryrate <Rate> [bBsSkKmMgG]
  --maxrecoveryrate <Rate> [bBsSkKmMgG]
The rate is specified in size/sec/device.  If a suffix is not given,
kiB/sec/device is assumed.  Setting the rate to 0 removes the preference.
This commit is contained in:
Jonathan Brassow
2013-05-31 11:25:52 -05:00
parent 7061b74ec6
commit 562c678ee2
13 changed files with 224 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
lib/raid/raid.c
View File

@@ -129,6 +129,24 @@ static int _raid_text_import(struct lv_segment *seg,
return 0;
}
}
if (dm_config_has_node(sn, "min_recovery_rate")) {
if (!dm_config_get_uint32(sn, "min_recovery_rate",
&seg->min_recovery_rate)) {
log_error("Couldn't read 'min_recovery_rate' for "
"segment %s of logical volume %s.",
dm_config_parent_name(sn), seg->lv->name);
return 0;
}
}
if (dm_config_has_node(sn, "max_recovery_rate")) {
if (!dm_config_get_uint32(sn, "max_recovery_rate",
&seg->max_recovery_rate)) {
log_error("Couldn't read 'max_recovery_rate' for "
"segment %s of logical volume %s.",
dm_config_parent_name(sn), seg->lv->name);
return 0;
}
}
if (!dm_config_get_list(sn, "raids", &cv)) {
log_error("Couldn't find RAID array for "
"segment %s of logical volume %s.",
@@ -155,6 +173,10 @@ static int _raid_text_export(const struct lv_segment *seg, struct formatter *f)
outf(f, "stripe_size = %" PRIu32, seg->stripe_size);
if (seg->writebehind)
outf(f, "writebehind = %" PRIu32, seg->writebehind);
if (seg->min_recovery_rate)
outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate);
if (seg->max_recovery_rate)
outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate);
return out_areas(f, seg, "raid");
}
@@ -227,6 +249,8 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)),
params.stripe_size = seg->stripe_size;
params.rebuilds = rebuilds;
params.writemostly = writemostly;
params.min_recovery_rate = seg->min_recovery_rate;
params.max_recovery_rate = seg->max_recovery_rate;
params.flags = flags;
if (!dm_tree_node_add_raid_target_with_params(node, len, &params))