thebestvibedev/tromcho.net
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Support seamless upgrade to new PG config and stats etcd key names

Browse Source
This commit is contained in:
Vitaliy Filippov
2024-07-31 01:15:37 +03:00
parent b263d311ef
commit 0daa8ea39b
2 changed files with 80 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mon/mon.js
+67 -8
View File
@@ -75,6 +75,8 @@ class Mon
this.prev_stats = { osd_stats: {}, osd_diff: {} };
this.recheck_pgs_active = false;
this.watcher_active = false;
this.old_pg_config = false;
this.old_pg_stats_seen = false;
}
async start()
@@ -205,6 +207,11 @@ class Mon
{
stats_changed = true;
}
else if (key.substr(0, 10) == '/pg/stats/')
{
this.old_pg_stats_seen = true;
stats_changed = true;
}
else if (key.substr(0, 10) == '/pg/state/')
{
pg_states_changed = true;
@@ -396,6 +403,50 @@ class Mon
this.parse_kv(kv);
}
}
if (Object.keys((this.state.config.pgs||{}).items||{}).length)
{
// Support seamless upgrade to new OSDs
if (!Object.keys((this.state.pg.config||{}).items||{}).length)
{
const pgs = JSON.stringify(this.state.config.pgs);
this.state.pg.config = JSON.parse(pgs);
const res = await this.etcd.etcd_call('/kv/txn', {
success: [
{ requestPut: { key: b64(this.config.etcd_prefix+'/pg/config'), value: b64(pgs) } },
],
compare: [
{ key: b64(this.config.etcd_prefix+'/pg/config'), target: 'MOD', mod_revision: ''+this.etcd_watch_revision, result: 'LESS' },
],
}, this.config.etcd_mon_timeout, this.config.etcd_mon_retries);
if (!res.succeeded)
throw new Error('Failed to duplicate old PG config to new PG config');
}
this.old_pg_config = true;
this.old_pg_config_timer = setInterval(() => this.check_clear_old_config().catch(console.error),
this.config.old_pg_config_clear_interval||3600000);
}
}
async check_clear_old_config()
{
if (this.old_pg_config && this.old_pg_stats_seen)
{
this.old_pg_stats_seen = false;
return;
}
if (this.old_pg_config)
{
await this.etcd.etcd_call('/kv/txn', { success: [
{ requestDeleteRange: { key: b64(this.config.etcd_prefix+'/config/pgs') } },
{ requestDeleteRange: { key: b64(this.config.etcd_prefix+'/pg/stats/'), range_end: b64(this.config.etcd_prefix+'/pg/stats0') } },
] }, this.config.etcd_mon_timeout, this.config.etcd_mon_retries);
this.old_pg_config = false;
}
if (this.old_pg_config_timer)
{
clearInterval(this.old_pg_config_timer);
this.old_pg_config_timer = null;
}
}
all_osds()
@@ -430,22 +481,26 @@ class Mon
// Check that no OSDs change their state before we pause PGs
// Doing this we make sure that OSDs don't wake up in the middle of our "transaction"
// and can't see the old PG configuration
const checks = [];
const checks = [
{ key: b64(this.config.etcd_prefix+'/mon/master'), target: 'LEASE', lease: ''+this.etcd_lease_id },
{ key: b64(this.config.etcd_prefix+'/pg/config'), target: 'MOD', mod_revision: ''+this.etcd_watch_revision, result: 'LESS' },
];
for (const osd_num of this.all_osds())
{
const key = b64(this.config.etcd_prefix+'/osd/state/'+osd_num);
checks.push({ key, target: 'MOD', result: 'LESS', mod_revision: ''+this.etcd_watch_revision });
}
await this.etcd.etcd_call('/kv/txn', {
compare: [
{ key: b64(this.config.etcd_prefix+'/mon/master'), target: 'LEASE', lease: ''+this.etcd_lease_id },
{ key: b64(this.config.etcd_prefix+'/pg/config'), target: 'MOD', mod_revision: ''+this.etcd_watch_revision, result: 'LESS' },
...checks,
],
const txn = {
compare: checks,
success: [
{ requestPut: { key: b64(this.config.etcd_prefix+'/pg/config'), value: b64(JSON.stringify(new_cfg)) } },
],
}, this.config.etcd_mon_timeout, 0);
};
if (this.old_pg_config)
{
txn.success.push({ requestPut: { key: b64(this.config.etcd_prefix+'/config/pgs'), value: b64(JSON.stringify(new_cfg)) } });
}
await this.etcd.etcd_call('/kv/txn', txn, this.config.etcd_mon_timeout, 0);
return false;
}
return !has_online;
@@ -619,6 +674,10 @@ class Mon
etcd_request.success.push(
{ requestPut: { key: b64(this.config.etcd_prefix+'/pg/config'), value: b64(JSON.stringify(new_pg_config)) } },
);
if (this.old_pg_config)
{
etcd_request.success.push({ requestPut: { key: b64(this.config.etcd_prefix+'/config/pgs'), value: b64(JSON.stringify(new_pg_config)) } });
}
const txn_res = await this.etcd.etcd_call('/kv/txn', etcd_request, this.config.etcd_mon_timeout, 0);
return txn_res.succeeded;
}