[Lustre-discuss] Remove a lost OST

Fri Jun 7 00:25:42 PDT 2013

Thanks for the link. I know the “undeleteable file” is on the lost OST. I will try to append a new OST with the same index of the lost OST. Perhaps I avoid the “invalid argument” error and so delete the file.

From: Parinay Kondekar 
Sent: Friday, June 07, 2013 8:50 AM
To: Alfonso Pardo 
Subject: Re: [Lustre-discuss] Remove a lost OST

one more link :)  - http://wiki.lustre.org/manual/LustreManual20_HTML/LustreOperations.html#50438194_30872 

The idea is to get, if the file you want to refer is on that inactive OST. If so, you need to spend time in recovering the lost OST. (The earlier link to man page would help in that).

HTH
p

On 5 June 2013 13:49, Alfonso Pardo <alfonso.pardo at ciemat.es> wrote:

  Thanks for your help, but I still have the same error with any command applied to the file:

  #> chmod g+x .viminfo
  chmod: cannot access `.viminfo': Invalid argument

  I think the problem is, I the client try to connect to the missing OST, and show the error.

  From: Parinay Kondekar 
  Sent: Tuesday, June 04, 2013 3:27 PM
  To: Alfonso Pardo 
  Subject: Re: [Lustre-discuss] Remove a lost OST

  Not sure, if this would help, but still sharing, 

  http://serverfault.com/questions/65616/question-marks-showing-in-ls-of-directory-io-errors-too

  cheers
  p

  On 4 June 2013 18:54, Parinay Kondekar <parinay_kondekar at xyratex.com> wrote:

    http://wiki.lustre.org/manual/LustreManual20_HTML/LustreMaintenance.html#50438199_pgfId-1298977

    Any log would help.

    p

    On 4 June 2013 13:58, Alfonso Pardo <alfonso.pardo at ciemat.es> wrote:

      Hi,

      In a few days I will stop my lustre infrastructure, and I will can solved a old problem that I have with a lost OST.

      I have a lost OST than I can’t recover (the OST0014):

      UUID                                 1K-blocks        Used          Available    Use%    Mounted on
      cetafs-MDT0000_UUID  1462920404    64895656   1300479028   5% /mnt/data[MDT:0]
      cetafs-OST0000_UUID   9760101272  1542373104  7729446316  17% /mnt/data[OST:0]
      cetafs-OST0001_UUID   9760101272  1414302924  7857519284  15% /mnt/data[OST:1]
      cetafs-OST0002_UUID   9760101272  1738339152  7533482352  19% /mnt/data[OST:2]
      cetafs-OST0003_UUID   9760101272  1464825624  7806995228  16% /mnt/data[OST:3]
      cetafs-OST0004_UUID   9760101272  1422237284  7849582828  15% /mnt/data[OST:4]
      cetafs-OST0005_UUID   9760101272  1418003120  7853817040  15% /mnt/data[OST:5]
      cetafs-OST0006_UUID   9760101272  1723708200  7548112848  19% /mnt/data[OST:6]
      cetafs-OST0007_UUID   9760101272  1373973876  7897847276  15% /mnt/data[OST:7]
      cetafs-OST0008_UUID   9760101272  1548924900  7722894388  17% /mnt/data[OST:8]
      cetafs-OST0009_UUID   9760101272  1482367088  7789454088  16% /mnt/data[OST:9]
      cetafs-OST000a_UUID   9760101272  1528436432  7743377448  16% /mnt/data[OST:10]
      cetafs-OST000b_UUID   9760101272  1500889020  7770929664  16% /mnt/data[OST:11]
      cetafs-OST000c_UUID   9760101272  1477190776  7794629116  16% /mnt/data[OST:12]
      cetafs-OST000d_UUID   9760101272  1862887572  7408933996  20% /mnt/data[OST:13]
      cetafs-OST000e_UUID   9760101272  1504771732  7767050696  16% /mnt/data[OST:14]
      cetafs-OST000f_UUID   9760101272  1578360196  7693460648  17% /mnt/data[OST:15]
      cetafs-OST0010_UUID   9760101272  1801015216  7470806488  19% /mnt/data[OST:16]
      cetafs-OST0011_UUID   9760101272  1552896208  7718917064  17% /mnt/data[OST:17]
      cetafs-OST0012_UUID   9760101272   673033020  8598788676   7% /mnt/data[OST:18]
      cetafs-OST0013_UUID   9760101272   673728700  8598092076   7% /mnt/data[OST:19]
      OST0014             : Resource temporarily unavailable
      cetafs-OST0015_UUID   1948881116   146169284  1705166048   8% /mnt/data[OST:21]
      cetafs-OST0016_UUID   1948881116    86958272  1764377060   5% /mnt/data[OST:22]
      cetafs-OST0017_UUID   1948881116   129321128  1722014204   7% /mnt/data[OST:23]
      cetafs-OST0018_UUID   1948881116   131278224  1720057108   7% /mnt/data[OST:24]

      And I have a couple of files that a part or stripe was stored in the lost OST0014:

      #> ls
      -?????????   ? ?       ?         ?            ? .viminfo
      #> rm –f .viminfo
      rm: cannot remove `.viminfo': Invalid argument

      Can somebody tell my how I remove this files from the filesystem and erase permanent the lost OST0014? During the lustre filesystem STOP I will can do any kind of lfsck, fsck, mount ldiskfs... any ideas?

      Thanks in advance

      Alfonso Pardo Diaz 
      System Administrator / Researcher 
      c/ Sola nº 1; 10200 TRUJILLO, SPAIN 
      Tel: +34 927 65 93 17 Fax: +34 927 32 32 37 

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