pool:fix outofspace error sending pool into diasbled mode #7753
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Motivation
we are seeing the this error wen there is no space on the pool left, and pool goes into disabled mode,
AB56598C55] WRITE failed : IOError
AB56598C55] Transfer failed due to a disk error: CacheException(rc=204;msg=Disk I/O Error )
AB56598C55] Pool mode changed to disabled(fetch,store,stage,p2p-client,p2p-server): Pool disabled: Disk I/O Error
AB56598C55] Pool: dcache-xfel487-01, fault occurred in transfer: Disk I/O Error . Pool disabled: , cause: CacheException(rc=204;msg=Disk I/O Error )
however we want it to go into READ-ONLY mode and files could stay accesable.
the privous patch (https://rb.dcache.org/r/14357/diff/3/#index_header) did not fix the issue.
so the new changes are still a try to fix the issue.
Acked-by: Dmitry Litvintsev
Target: master, 10.2
Require-book: no
Require-notes: yes
Patch: https://rb.dcache.org/r/14368/