Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-12714 PCC Phase 2
  3. LU-11829

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

    Details

    • Type: Technical task
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Labels:
    • Rank (Obsolete):
      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"
      

        Attachments

          Activity

            People

            • Assignee:
              qian_wc Qian Yingjin
              Reporter:
              qian_wc Qian Yingjin
            • Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

              • Created:
                Updated: