linux.git/fs/ceph/debugfs.c, branch v6.6.131

ceph: pass the mdsc to several helpers

2024-04-27T15:11:29+00:00

[ Upstream commit 197b7d792d6aead2e30d4b2c054ffabae2ed73dc ]

We will use the 'mdsc' to get the global_id in the following commits.

Link: https://tracker.ceph.com/issues/61590
Signed-off-by: Xiubo Li 
Reviewed-by: Patrick Donnelly 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov 
Stable-dep-of: b372e96bd0a3 ("ceph: redirty page before returning AOP_WRITEPAGE_ACTIVATE")
Signed-off-by: Sasha Levin

ceph: fix potential use-after-free bug when trimming caps

2023-04-30T10:37:28+00:00

When trimming the caps and just after the 'session->s_cap_lock' is
released in ceph_iterate_session_caps() the cap maybe removed by
another thread, and when using the stale cap memory in the callbacks
it will trigger use-after-free crash.

We need to check the existence of the cap just after the 'ci->i_ceph_lock'
being acquired. And do nothing if it's already removed.

Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/43272
Signed-off-by: Xiubo Li 
Reviewed-by: Luís Henriques 
Signed-off-by: Ilya Dryomov

ceph: use tracked average r/w/m latencies to display metrics in debugfs

2022-03-21T12:35:16+00:00

Signed-off-by: Venky Shankar 
Reviewed-by: Xiubo Li 
Signed-off-by: Ilya Dryomov

ceph: add a new metric to keep track of remote object copies

2021-11-08T02:29:52+00:00

This patch adds latency and size metrics for remote object copies
operations ("copyfrom").  For now, these metrics will be available on the
client only, they won't be sent to the MDS.

Signed-off-by: Luís Henriques 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: clean-up metrics data structures to reduce code duplication

2021-11-08T02:29:52+00:00

This patch modifies struct ceph_client_metric so that each metric block
(read, write and metadata) becomes an element in a array.  This allows to
also re-write the helper functions that handle these blocks, making them
simpler and, above all, reduce the amount of copy&paste every time a new
metric is added.

Thus, for each of these metrics there will be a new struct ceph_metric
entry that'll will contain all the sizes and latencies fields (and a lock).
Note however that the metadata metric doesn't really use the size_fields,
and thus this metric won't be shown in the debugfs '../metrics/size' file.

Signed-off-by: Luís Henriques 
Reviewed-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: split 'metric' debugfs file into several files

2021-11-08T02:29:52+00:00

Currently, all the metrics are grouped together in a single file, making
it difficult to process this file from scripts.  Furthermore, as new
metrics are added, processing this file will become even more challenging.

This patch turns the 'metric' file into a directory that will contain
several files, one for each metric.

Signed-off-by: Luís Henriques 
Reviewed-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: add IO size metrics support

2021-06-28T22:15:51+00:00

This will collect IO's total size and then calculate the average
size, and also will collect the min/max IO sizes.

The debugfs will show the size metrics in bytes and will let the
userspace applications to switch to what they need.

URL: https://tracker.ceph.com/issues/49913
Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: rename the metric helpers

2021-04-27T21:52:23+00:00

Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: add status debugfs file

2020-12-14T22:21:47+00:00

This will help list some useful client side info, like the client
entity address/name and blocklisted status, etc.

URL: https://tracker.ceph.com/issues/48057
Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: metrics for opened files, pinned caps and opened inodes

2020-10-12T13:29:26+00:00

In client for each inode, it may have many opened files and may
have been pinned in more than one MDS servers. And some inodes
are idle, which have no any opened files.

This patch will show these metrics in the debugfs, likes:

item                               total
-----------------------------------------
opened files  / total inodes       14 / 5
pinned i_caps / total inodes       7  / 5
opened inodes / total inodes       3  / 5

Will send these metrics to ceph, which will be used by the `fs top`,
later.

[ jlayton: drop unrelated hunk, count hashed inodes instead of
           allocated ones ]

URL: https://tracker.ceph.com/issues/47005
Signed-off-by: Xiubo Li 
Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov