reef: common,ceph: add output file switch to dump json to#57676
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reef: common,ceph: add output file switch to dump json to#57676
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This PR is under test in https://tracker.ceph.com/issues/69881. |
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(trivial rebase for jenkins) |
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This PR is under test in https://tracker.ceph.com/issues/70178. |
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com> (cherry picked from commit 770ab51)
To stream JSON to a file for collection (for testing). The idea here that trying to send a very large JSON result over `ceph tell` is best to be avoided. Signed-off-by: Patrick Donnelly <pdonnell@redhat.com> (cherry picked from commit 8928a12)
The formatter would be deleted and automatically flush anyway but this is conforming to the API. Signed-off-by: Patrick Donnelly <pdonnell@redhat.com> (cherry picked from commit 5a3584b)
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com> (cherry picked from commit de350cc)
The `ceph tell mds.X cache dump` and `ceph tell mds.X ops` commands have a useful `--path` argument that directs the daemon to save the dump of the output to a file local the daemon. This has several advantages: * We don't need to construct the JSON output in memory, which may be many gigabytes. * Streaming writes to a local file is significantly faster than sending the data over the ceph messenger. * The command spends as little time as possible holding relevant locks. However, only some commands support this and we could make it generic to the admin socket interface. So, add a generic --daemon-output-file argument to achieve this. The main concern with this is security (telling the daemon to write to arbitrary files) but this is gated by the session caps which require "allow_all" and that's typically only valid for the client.admin. Fixes: https://tracker.ceph.com/issues/65747 Signed-off-by: Patrick Donnelly <pdonnell@redhat.com> (cherry picked from commit a341468)
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com> (cherry picked from commit 2d26694)
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Note: Includes some commits from the quiesce work to make this backportable.
backport tracker: https://tracker.ceph.com/issues/66187
backport of #57215
parent tracker: https://tracker.ceph.com/issues/65747
this backport was staged using ceph-backport.sh version 16.0.0.6848
find the latest version at https://github.com/ceph/ceph/blob/main/src/script/ceph-backport.sh