[lustre-discuss] getting without inodes

[Carlos Adean]

Hello experts,

We have a Lustre with two tiers T0(SSD) and T1(HDD), the first with 70TB
and the second one with ~500TB.

I'm experiencing a problem that the T1 has much less inodes than T0 and
that is getting without inodes in the OSTs, so I'd like to understand the
source of this and how to fix that.


Thanks in advance.



=== T0

$ lfs df -i /lustre/t0
UUID                      Inodes       IUsed       IFree IUse% Mounted on
t0-MDT0000_UUID        390627328     1499300   389128028   1%
/lustre/t0[MDT:0]
t0-OST0000_UUID         14651392     1097442    13553950   8%
/lustre/t0[OST:0]
t0-OST0001_UUID         14651392     1097492    13553900   8%
/lustre/t0[OST:1]
t0-OST0002_UUID         14651392     1097331    13554061   8%
/lustre/t0[OST:2]
t0-OST0003_UUID         14651392     1097563    13553829   8%
/lustre/t0[OST:3]
t0-OST0004_UUID         14651392     1097576    13553816   8%
/lustre/t0[OST:4]
t0-OST0005_UUID         14651392     1097505    13553887   8%
/lustre/t0[OST:5]
t0-OST0006_UUID         14651392     1097524    13553868   8%
/lustre/t0[OST:6]
t0-OST0007_UUID         14651392     1097596    13553796   8%
/lustre/t0[OST:7]
t0-OST0008_UUID         14651392     1097442    13553950   8%
/lustre/t0[OST:8]
t0-OST0009_UUID         14651392     1097563    13553829   8%
/lustre/t0[OST:9]
t0-OST000a_UUID         14651392     1097515    13553877   8%
/lustre/t0[OST:10]
t0-OST000b_UUID         14651392     1096524    13554868   8%
/lustre/t0[OST:11]
t0-OST000c_UUID         14651392     1096608    13554784   8%
/lustre/t0[OST:12]
t0-OST000d_UUID         14651392     1096524    13554868   8%
/lustre/t0[OST:13]
t0-OST000e_UUID         14651392     1096641    13554751   8%
/lustre/t0[OST:14]
t0-OST000f_UUID         14651392     1096647    13554745   8%
/lustre/t0[OST:15]
t0-OST0010_UUID         14651392     1096705    13554687   8%
/lustre/t0[OST:16]
t0-OST0011_UUID         14651392     1096616    13554776   8%
/lustre/t0[OST:17]
t0-OST0012_UUID         14651392     1096520    13554872   8%
/lustre/t0[OST:18]
t0-OST0013_UUID         14651392     1096598    13554794   8%
/lustre/t0[OST:19]
t0-OST0014_UUID         14651392     1096669    13554723   8%
/lustre/t0[OST:20]
t0-OST0015_UUID         14651392     1096570    13554822   8%
/lustre/t0[OST:21]

filesystem_summary:    299694753     1499300   298195453   1% /lustre/t0


=== T1

$  lfs df -i /lustre/t1
UUID                      Inodes       IUsed       IFree IUse% Mounted on
t1-MDT0000_UUID       1478721536    56448788  1422272748   4% /lustre/t1[MDT:0]
t1-OST0000_UUID         30492032    30491899         133 100% /lustre/t1[OST:0]
t1-OST0001_UUID         30492032    30491990          42 100% /lustre/t1[OST:1]
t1-OST0002_UUID         30492032    30491916         116 100% /lustre/t1[OST:2]
t1-OST0003_UUID         30492032    27471050     3020982  91% /lustre/t1[OST:3]
t1-OST0004_UUID         30492032    30491989          43 100% /lustre/t1[OST:4]
t1-OST0005_UUID         30492032    30491960          72 100% /lustre/t1[OST:5]
t1-OST0006_UUID         30492032    30491948          84 100% /lustre/t1[OST:6]
t1-OST0007_UUID         30492032    30491939          93 100% /lustre/t1[OST:7]
t1-OST0008_UUID         30492032    29811803      680229  98% /lustre/t1[OST:8]
t1-OST0009_UUID         30492032    29808261      683771  98% /lustre/t1[OST:9]
t1-OST000a_UUID         30492032    29809919      682113  98% /lustre/t1[OST:10]
t1-OST000b_UUID         30492032    29807585      684447  98% /lustre/t1[OST:11]
t1-OST000c_UUID         30492032    29809171      682861  98% /lustre/t1[OST:12]
t1-OST000d_UUID         30492032    29804206      687826  98% /lustre/t1[OST:13]
t1-OST000e_UUID         30492032    29806399      685633  98% /lustre/t1[OST:14]
t1-OST000f_UUID         30492032    29802857      689175  98% /lustre/t1[OST:15]

filesystem_summary:     64946408    56448788     8497620  87% /lustre/t1




--
Carlos Adean
www.linea.org.br

-- 


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