[LU-13831] lfs mirror command to open a specific mirror copy Created: 30/Jul/20  Updated: 30/Jul/20

Status: Open
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Improvement Priority: Minor
Reporter: Andreas Dilger Assignee: WC Triage
Resolution: Unresolved Votes: 0
Labels: None

Issue Links:
Related
is related to LU-5170 lfs usability Open
is related to LU-12649 Tracker for ongoing FLR improvements Open
is related to LU-10258 lfs mirror command to read/write spec... Resolved
Rank (Obsolete): 9223372036854775807

 Description   

It would be useful to add an "lfs open [--ifcomp=<component_id>] [--ofcomp=<component_id>] <command>" that opens the stdin and/or stdout with the specified component ID values, so that e.g. "dd" could be used as a resync tool for stale components, or other arbitrary commands (e.g. MPI file utils for parallel resync, HSM tools for archive handling, etc).

Also useful would be to open a specific mirror number for whole-file access, instead of just a single component. That would be something like "-ifmirr=" and "-ofmirr=" options.


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