No Discard/Trim/Unmap ?
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- Dominant language
- Python
- Stars
- 68
- Forks
- 58
- PR merge metrics
- No merged PRs in 30d
Description
We got the iSCSI gateway working with Ceph Octopus but a Windows client sees the drive as a standard HDD so it won't trim.
The SUSE ceph-iscsi documentation has a myriad of options available, similar to how we're used to exporting functionality when running a small Debian VM which exports a RBD block device. I presume these are perhaps only available when the backstore is krbd instead of user:rbd (tcm-runner)?
https://documentation.suse.com/ses/6/html/ses-all/cha-ceph-as-iscsi.html
I presume this functionality is exclusive to SUSE with their target_core_rbd module and that I may have initially miss interpreted the following discussion where I understood kernel 4.16+ to include the necessary plumbing:
https://www.spinics.net/lists/ceph-users/msg53920.html
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the SUSE ceph-iscsi documentation and the linked ceph-users discussion, then compare the available backstores and the reported Windows client behavior. Done should establish whether discard, trim, and unmap are supported for the stated Ceph Octopus setup and document the required scope or limitation.
Written by the indexing model from the issue text.
Assessment
- Domain
- infrastructure, networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100