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{"/COMMIT_MSG":[{"author":{"_account_id":16643,"name":"Goutham Pacha Ravi","email":"gouthampravi@gmail.com","username":"gouthamr"},"change_message_id":"5164aa583b9ad92dec8c2496d5ee5a5e573bd9f2","unresolved":true,"context_lines":[{"line_number":4,"context_line":"Commit:     Prasasnt Padhi \u003cprasant.padhi@dell.com\u003e"},{"line_number":5,"context_line":"CommitDate: 2026-02-05 03:42:11 +0000"},{"line_number":6,"context_line":""},{"line_number":7,"context_line":"This patch adds a note to the PowerScale documentation to enable backend Compression supportwq"},{"line_number":8,"context_line":""},{"line_number":9,"context_line":"Change-Id: Ifc51a649e7b6f0ed6b3cfc51979f79df327db702"},{"line_number":10,"context_line":"Signed-off-by: Prasasnt Padhi \u003cprasant.padhi@dell.com\u003e"}],"source_content_type":"text/x-gerrit-commit-message","patch_set":2,"id":"04e7655c_b8240383","line":7,"range":{"start_line":7,"start_character":0,"end_line":7,"end_character":94},"updated":"2026-02-05 04:28:03.000000000","message":"We use some conventions for commit messages that ensure consistency and easy of traversing history: https://wiki.openstack.org/wiki/GitCommitMessages#Summary_of_Git_commit_message_structure\n\n\n```suggestion\nAdd PowerScale doc to enable compression\n```","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"01dd6171edda98b6d5befb02a4f9b06c04f395c6","unresolved":false,"context_lines":[{"line_number":4,"context_line":"Commit:     Prasasnt Padhi \u003cprasant.padhi@dell.com\u003e"},{"line_number":5,"context_line":"CommitDate: 2026-02-05 03:42:11 +0000"},{"line_number":6,"context_line":""},{"line_number":7,"context_line":"This patch adds a note to the PowerScale documentation to enable backend Compression supportwq"},{"line_number":8,"context_line":""},{"line_number":9,"context_line":"Change-Id: Ifc51a649e7b6f0ed6b3cfc51979f79df327db702"},{"line_number":10,"context_line":"Signed-off-by: Prasasnt Padhi \u003cprasant.padhi@dell.com\u003e"}],"source_content_type":"text/x-gerrit-commit-message","patch_set":2,"id":"5550d609_65dbe38f","line":7,"range":{"start_line":7,"start_character":0,"end_line":7,"end_character":94},"in_reply_to":"04e7655c_b8240383","updated":"2026-02-12 08:36:00.000000000","message":"Done","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"}],"/PATCHSET_LEVEL":[{"author":{"_account_id":16643,"name":"Goutham Pacha Ravi","email":"gouthampravi@gmail.com","username":"gouthamr"},"change_message_id":"5164aa583b9ad92dec8c2496d5ee5a5e573bd9f2","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":2,"id":"a74827a0_1fd0b6bb","updated":"2026-02-05 04:28:03.000000000","message":"Is compression actually being enabled in the powerscale driver code?","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":16643,"name":"Goutham Pacha Ravi","email":"gouthampravi@gmail.com","username":"gouthamr"},"change_message_id":"68d4e5d76bcbb5fd7b4c1f6daaf49b56b6e09758","unresolved":true,"context_lines":[],"source_content_type":"","patch_set":2,"id":"84e8a9cf_28bfaf7b","in_reply_to":"210627de_10c1d60f","updated":"2026-02-19 06:31:12.000000000","message":"Okay, you\u0027re suggesting that compression is cluster wide. How can one create different pools on the same cluster with different compression settings?\n\nCan you programmatically detect whether compression has been enabled or not using any APIs?","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"419584eb6aa470357e0d9fe5115582b22cff6937","unresolved":true,"context_lines":[],"source_content_type":"","patch_set":2,"id":"b1eae199_4bfc1162","in_reply_to":"210627de_10c1d60f","updated":"2026-02-19 06:28:28.000000000","message":"Updated the documentation to remove the suggestion of \"compression\" needs to be configured via share type extra-specs","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"a19cde732cf8d1662120376017f0fdb0427b7a02","unresolved":true,"context_lines":[],"source_content_type":"","patch_set":2,"id":"210627de_10c1d60f","in_reply_to":"8249665b_bfaee53f","updated":"2026-02-19 06:26:40.000000000","message":"We wanted to keep the driver code unchanged as there is no support from PowerScale backend to match Manila expectations for compression. Compression can be either toggled on or off at the cluster level.\n\nNo share-type extra-spec is required to “enable compression.”\nAdmins must ensure /ifs/manila (or the target placement path) is on a pool with inline compression enabled.\nIf operators run multiple PowerScale pools with different compression settings and want to steer placement, they should use separate backends or per-backend root paths, e.g.:\n\nisilon-compress → share_backend_name \u003d isilon-compress with root path on a compression-enabled pool\nisilon-nocompress → share_backend_name \u003d isilon-nocompress with root path on a non-compress pool\nThen bind a share type to a specific backend via share_backend_name (or use different share types tied to different backends).","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"4aaae9d406e6155c14fd903a17a0b5c1702c5b33","unresolved":true,"context_lines":[],"source_content_type":"","patch_set":2,"id":"e56116d3_b5e30f54","in_reply_to":"84e8a9cf_28bfaf7b","updated":"2026-02-19 06:59:59.000000000","message":"Even though compression is cluster wide, it may happen that some nodes in the cluster doesn\u0027t support compression. User can create pools of nodes based on compression support and configure them via share type.\nWe have API to detect compression for the entire cluster and there is no API at node pool level. It\u0027s the node hw capability that drives compression.","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"01dd6171edda98b6d5befb02a4f9b06c04f395c6","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":2,"id":"dddce6d8_cb54379f","in_reply_to":"a74827a0_1fd0b6bb","updated":"2026-02-12 08:36:00.000000000","message":"We don’t need (or want) any Manila driver code changes to “enable compression.” PowerScale/OneFS handles inline compression at the cluster/storage‑pool level, not via the Manila driver. As long as OneFS compression is enabled and the Manila root path (e.g., /ifs/manila) is placed on a node pool that supports inline compression, the data written by Manila shares will be compressed by OneFS automatically.","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":16643,"name":"Goutham Pacha Ravi","email":"gouthampravi@gmail.com","username":"gouthamr"},"change_message_id":"51c0417f26e7fd0aa5f53722471a29baafebdc09","unresolved":true,"context_lines":[],"source_content_type":"","patch_set":2,"id":"8249665b_bfaee53f","in_reply_to":"dddce6d8_cb54379f","updated":"2026-02-19 05:59:13.000000000","message":"I\u0027m not sure I understand. Let me elaborate on my confusion.\n\nYou\u0027re suggesting in the documentation update that \"compression\" needs to be configured via share type extra-specs. Matching with extra-specs can be done only if the back end driver reports a capability.. I don\u0027t see any code in your driver that does that. \n\nMaybe I\u0027m missing something?","commit_id":"374673c0adb7a725e1e02c90821e691c2ae0dd53"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"01dd6171edda98b6d5befb02a4f9b06c04f395c6","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":3,"id":"38a9eb6a_197c293f","updated":"2026-02-12 08:36:00.000000000","message":"Updated the commit message based on suggestion.\nNote: Since there is no Blueprint or Defect ID, it is not part of commit message.","commit_id":"3b063d13a6d53815831ce68cb2e40d8e56099900"},{"author":{"_account_id":36725,"name":"Nilesh Thathagar","display_name":"Nilesh Thathagar","email":"nilesh.thathagar@dell.com","username":"NileshT"},"change_message_id":"7f2ae6a23c55a8402b24e13739510261931b5ede","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":5,"id":"b8fe1dd5_7b15202f","updated":"2026-02-20 09:14:25.000000000","message":"run-DellEMC PowerScale CI","commit_id":"19255e169ff3863a9bf761f11a0e7284cf6b9578"},{"author":{"_account_id":29632,"name":"Carlos Eduardo","email":"ces.eduardo98@gmail.com","username":"silvacarlos"},"change_message_id":"df1e87c229827f919fa568082fd3d088cb605ce6","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":6,"id":"3a6323d4_014c06d3","updated":"2026-02-27 22:01:20.000000000","message":"LGTM, thanks Prasant","commit_id":"fbee5a804210237679a869a49a0df85ce84d685c"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"05a28bc738b5e3b4d5952ccce831ae06cb5bba04","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":6,"id":"658d5d1a_13e2eef7","in_reply_to":"3a6323d4_014c06d3","updated":"2026-02-28 04:14:47.000000000","message":"Thanks for your time, Carlos","commit_id":"fbee5a804210237679a869a49a0df85ce84d685c"}],"doc/source/admin/share_back_ends_feature_support_mapping.rst":[{"author":{"_account_id":16643,"name":"Goutham Pacha Ravi","email":"gouthampravi@gmail.com","username":"gouthamr"},"change_message_id":"9490e36f6be8fe7d246b099d7f25b2bd20ed2235","unresolved":true,"context_lines":[{"line_number":284,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":285,"context_line":"|               Dell Unity               |     N     |      T     |   \\-   |      \\-     |         N         |          \\-        | \\-  |              N             |          S         |          \\-        |       P      |       Q      |           \\-            |           \\-             |"},{"line_number":286,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":287,"context_line":"|            Dell PowerScale             |     \\-    |      K     |   G    |      G      |        \\-         |          L         | \\-  |              K             |          \\-        |           G        |       P      |      \\-      |           \\-            |            G             |"},{"line_number":288,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":289,"context_line":"|            Dell PowerStore             |     \\-    |      B     |   \\-   |      \\-     |         B         |          \\-        | \\-  |              B             |          B         |          \\-        |       B      |      \\-      |           \\-            |           \\-             |"},{"line_number":290,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"}],"source_content_type":"text/x-rst","patch_set":5,"id":"11648679_a79eaf23","line":287,"range":{"start_line":287,"start_character":82,"end_line":287,"end_character":83},"updated":"2026-02-27 22:08:31.000000000","message":"please undo this change as well; the \"compression\" standard extra-spec is not supported by the backend","commit_id":"19255e169ff3863a9bf761f11a0e7284cf6b9578"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"1846738d9619abbfab439073d44771e271925374","unresolved":true,"context_lines":[{"line_number":284,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":285,"context_line":"|               Dell Unity               |     N     |      T     |   \\-   |      \\-     |         N         |          \\-        | \\-  |              N             |          S         |          \\-        |       P      |       Q      |           \\-            |           \\-             |"},{"line_number":286,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":287,"context_line":"|            Dell PowerScale             |     \\-    |      K     |   G    |      G      |        \\-         |          L         | \\-  |              K             |          \\-        |           G        |       P      |      \\-      |           \\-            |            G             |"},{"line_number":288,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":289,"context_line":"|            Dell PowerStore             |     \\-    |      B     |   \\-   |      \\-     |         B         |          \\-        | \\-  |              B             |          B         |          \\-        |       B      |      \\-      |           \\-            |           \\-             |"},{"line_number":290,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"}],"source_content_type":"text/x-rst","patch_set":5,"id":"44e8d07d_2b0e49ed","line":287,"range":{"start_line":287,"start_character":82,"end_line":287,"end_character":83},"in_reply_to":"11648679_a79eaf23","updated":"2026-02-28 01:14:50.000000000","message":"PowerScale backend does supports compression. Please explain why do you think so?","commit_id":"19255e169ff3863a9bf761f11a0e7284cf6b9578"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"05a28bc738b5e3b4d5952ccce831ae06cb5bba04","unresolved":false,"context_lines":[{"line_number":284,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":285,"context_line":"|               Dell Unity               |     N     |      T     |   \\-   |      \\-     |         N         |          \\-        | \\-  |              N             |          S         |          \\-        |       P      |       Q      |           \\-            |           \\-             |"},{"line_number":286,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":287,"context_line":"|            Dell PowerScale             |     \\-    |      K     |   G    |      G      |        \\-         |          L         | \\-  |              K             |          \\-        |           G        |       P      |      \\-      |           \\-            |            G             |"},{"line_number":288,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":289,"context_line":"|            Dell PowerStore             |     \\-    |      B     |   \\-   |      \\-     |         B         |          \\-        | \\-  |              B             |          B         |          \\-        |       B      |      \\-      |           \\-            |           \\-             |"},{"line_number":290,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"}],"source_content_type":"text/x-rst","patch_set":5,"id":"58e35332_e2a3bf1a","line":287,"range":{"start_line":287,"start_character":82,"end_line":287,"end_character":83},"in_reply_to":"44e8d07d_2b0e49ed","updated":"2026-02-28 04:14:47.000000000","message":"Thanks for the review Gautham. However, I disagree with the comment. The documentation can still claim support if the backend performs compression by default or is configured at the FS level even when it cannot be controlled by Manila driver via extra_spec. I shouldn\u0027t undo this change as undoing means PowerScale doesn\u0027t support compression, which is not true","commit_id":"19255e169ff3863a9bf761f11a0e7284cf6b9578"},{"author":{"_account_id":38284,"name":"Prasant Padhi","display_name":"Prasant Padhi","email":"prasant.padhi@dell.com","username":"prasant.padhi@dell.com"},"change_message_id":"74fa435f67bb270d878ec421a28014881d764e57","unresolved":false,"context_lines":[{"line_number":284,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":285,"context_line":"|               Dell Unity               |     N     |      T     |   \\-   |      \\-     |         N         |          \\-        | \\-  |              N             |          S         |          \\-        |       P      |       Q      |           \\-            |           \\-             |"},{"line_number":286,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":287,"context_line":"|            Dell PowerScale             |     \\-    |      K     |   G    |      G      |        \\-         |          L         | \\-  |              K             |          \\-        |           G        |       P      |      \\-      |           \\-            |            G             |"},{"line_number":288,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":289,"context_line":"|            Dell PowerStore             |     \\-    |      B     |   \\-   |      \\-     |         B         |          \\-        | \\-  |              B             |          B         |          \\-        |       B      |      \\-      |           \\-            |           \\-             |"},{"line_number":290,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"}],"source_content_type":"text/x-rst","patch_set":5,"id":"c3435a95_37816a51","line":287,"range":{"start_line":287,"start_character":82,"end_line":287,"end_character":83},"in_reply_to":"58e35332_e2a3bf1a","updated":"2026-03-02 09:21:58.000000000","message":"I believe, you are trying to say, compression can be enabled for PowerScale only when it supports setting it through extra-spec. The change is undon; plz approve.\n\nThis restriction isn\u0027t helping PowerScale, as it supports the data compression functionality with no extra-spec enforcement for Manila shares. PowerScale sales and customers looking at this document to map backend capability is creating a misleading perseption of PowerScale not supporting data compression from Manila perspective.","commit_id":"19255e169ff3863a9bf761f11a0e7284cf6b9578"},{"author":{"_account_id":16643,"name":"Goutham Pacha Ravi","email":"gouthampravi@gmail.com","username":"gouthamr"},"change_message_id":"b87e3bf7802403294b30a502e7dbffbfa71f4c2a","unresolved":false,"context_lines":[{"line_number":284,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":285,"context_line":"|               Dell Unity               |     N     |      T     |   \\-   |      \\-     |         N         |          \\-        | \\-  |              N             |          S         |          \\-        |       P      |       Q      |           \\-            |           \\-             |"},{"line_number":286,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":287,"context_line":"|            Dell PowerScale             |     \\-    |      K     |   G    |      G      |        \\-         |          L         | \\-  |              K             |          \\-        |           G        |       P      |      \\-      |           \\-            |            G             |"},{"line_number":288,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"},{"line_number":289,"context_line":"|            Dell PowerStore             |     \\-    |      B     |   \\-   |      \\-     |         B         |          \\-        | \\-  |              B             |          B         |          \\-        |       B      |      \\-      |           \\-            |           \\-             |"},{"line_number":290,"context_line":"+----------------------------------------+-----------+------------+--------+-------------+-------------------+--------------------+-----+----------------------------+--------------------+--------------------+--------------+--------------+-------------------------+--------------------------+"}],"source_content_type":"text/x-rst","patch_set":5,"id":"2c9048d5_2be2bb2e","line":287,"range":{"start_line":287,"start_character":82,"end_line":287,"end_character":83},"in_reply_to":"c3435a95_37816a51","updated":"2026-03-02 21:29:03.000000000","message":"I think it\u0027s worth adding a disclaimer on that file suggesting that the features in the tables map to manila\u0027s features driven by APIs or common driver capabilities. Lack of support shouldn\u0027t be interpreted as the underlying technology being unavailable. \n\nBecause the issue you encountered is also true of storage back end systems that always perform thin provisioning.. but, report \"thin_provisioning\" as False because they don\u0027t support oversubscription control via Manila.","commit_id":"19255e169ff3863a9bf761f11a0e7284cf6b9578"}]}