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  1. Lustre
  2. LU-12714 PCC Phase 2
  3. LU-11829

Separate the naming structure between RW-PCC and RO-PCC

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    • Technical task
    • Resolution: Unresolved
    • Minor
    • None
    • None
    • 9223372036854775807

    Description

      Currenly a PCC backend can provide caching services for both RW-PCC and RO-PCC which both use lhsmposix naming structure as follows:

       "%04x/%04x/%04x/%04x/%04x/%04x/" DFID_NOBRACE
      

      However, sharing the same naming structure may cause some confusions. For example, when RO-PCC cache a HSM archived file (not HSM released), it may confuse the user that whether the cached file object in the PCC device is RO-PCC cached file or a HSM archive. Moreover, a HSM remove request maybe delete the RO-PCC cached file wrongly.
      To solve this problem, we add a suffix .rdonly for RO-PCC naming strcuture to distingush from the RW-PCC and HSM solution:

      "%04x/%04x/%04x/%04x/%04x/%04x/"DFID_NOBRACE".rdonly"
      

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            qian_wc Qian Yingjin
            qian_wc Qian Yingjin
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              Created:
              Updated: