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ceph-afr-calc
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Warn about too small number of failure domains

master
Vitaliy Filippov 2022-12-15 17:33:30 +03:00
parent a0246d89c1
commit 56df2248ef
1 changed files with 39 additions and 24 deletions
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63
main.js
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@ -19,6 +19,7 @@ class Calc extends preact.Component
eager: false,
same_host: true,
result: 0,
error: null,
use_speed: true,
sim: true,
}
@ -39,25 +40,35 @@ class Calc extends preact.Component
this._timer = setTimeout(() => this.calc(null, true), 200);
return;
}
const fn = st.sim ? cluster_afr_bruteforce : cluster_afr;
st.result = 100*fn({
n_hosts: st.hosts,
n_drives: st.drives,
afr_drive: st.afr_drive/100,
afr_host: st.afr_host/100,
capacity: st.capacity*1000,
speed: st.use_speed ? st.speed/1000 : null,
disk_heal_hours: st.use_speed ? null : st.disk_heal_hours,
ec: st.ec,
ec_data: st.ec_data,
ec_parity: st.ec_parity,
replicas: st.replicas,
pgs: st.pg_per_osd,
osd_rm: !st.same_host,
degraded_replacement: st.eager,
down_out_interval: 600,
});
this.setState(empty_st ? { result: st.result } : st);
// !( >= ) not the same as < because of NaN
if (!(parseInt(st.hosts) >= (st.ec ? parseInt(st.ec_data)+parseInt(st.ec_parity) : parseInt(st.replicas))))
{
st.error = 'Число серверов (доменов отказа) меньше числа дисков в PG, расчёт невозможен';
st.result = 0;
}
else
{
const fn = st.sim ? cluster_afr_bruteforce : cluster_afr;
st.error = null;
st.result = 100*fn({
n_hosts: st.hosts,
n_drives: st.drives,
afr_drive: st.afr_drive/100,
afr_host: st.afr_host/100,
capacity: st.capacity*1000,
speed: st.use_speed ? st.speed/1000 : null,
disk_heal_hours: st.use_speed ? null : st.disk_heal_hours,
ec: st.ec,
ec_data: st.ec_data,
ec_parity: st.ec_parity,
replicas: st.replicas,
pgs: st.pg_per_osd,
osd_rm: !st.same_host,
degraded_replacement: st.eager,
down_out_interval: 600,
});
}
this.setState(empty_st ? { error: st.error, result: st.result } : st);
}
setter(field)
@ -137,7 +148,7 @@ class Calc extends preact.Component
if (c)
i++;
}
return s;
return s[s.length-1] == '.' ? '0' : s;
}
componentDidMount()
@ -171,7 +182,7 @@ class Calc extends preact.Component
</div>
<table>
<tr>
<th>Число серверов</th>
<th>Число <abbr title="Серверов либо других доменов отказа, если у вас домен отказа другой">серверов</abbr></th>
<td><input type="text" value={state.hosts} onchange={this.setter('hosts')} /></td>
</tr>
<tr>
@ -250,9 +261,13 @@ class Calc extends preact.Component
<div style="text-align: center; font-size: 150%; margin: 20px 0; font-weight: bold">
Вероятность потери данных в течение года:
</div>
<div style="text-align: center; font-size: 200%; margin: 20px 0; font-weight: bold">
{this.format4(state.result)} %
</div>
{state.error
? <div style="text-align: center; color: red; margin: 20px 0">
{state.error}
</div>
: <div style="text-align: center; font-size: 200%; margin: 20px 0; font-weight: bold">
{this.format4(state.result)} %
</div>}
<div style="text-align: center; color: #aaa; margin: 10px 0">
&copy; Виталий Филиппов 2020+ <a style="color: inherit" href="https://yourcmc.ru/git/vitalif/ceph-afr-calc">(исходники)</a>
</div>