user/sven/linux.git/include/linux/ceph/libceph.h, branch v5.10.221

ceph: move sb->wb_pagevec_pool to be a global mempool

2020-08-04T17:41:12Z

When doing some testing recently, I hit some page allocation failures on mount, when creating the wb_pagevec_pool for the mount. That requires 128k (32 contiguous pages), and after thrashing the memory during an xfstests run, sometimes that would fail. 128k for each mount seems like a lot to hold in reserve for a rainy day, so let's change this to a global mempool that gets allocated when the module is plugged in. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

libceph: move away from global osd_req_flags

2020-06-16T14:01:53Z

osd_req_flags is overly general and doesn't suit its only user (read_from_replica option) well: - applying osd_req_flags in account_request() affects all OSD requests, including linger (i.e. watch and notify). However, linger requests should always go to the primary even though some of them are reads (e.g. notify has side effects but it is a read because it doesn't result in mutation on the OSDs). - calls to class methods that are reads are allowed to go to the replica, but most such calls issued for "rbd map" and/or exclusive lock transitions are requested to be resent to the primary via EAGAIN, doubling the latency. Get rid of global osd_req_flags and set read_from_replica flag only on specific OSD requests instead. Fixes: 8ad44d5e0d1e ("libceph: read_from_replica option") Signed-off-by: Ilya Dryomov Reviewed-by: Jeff Layton

libceph: read_from_replica option

2020-06-01T11:22:53Z

Expose replica reads through read_from_replica=balance and read_from_replica=localize. The default is to read from primary (read_from_replica=no). Signed-off-by: Ilya Dryomov Reviewed-by: Jeff Layton

libceph: crush_location infrastructure

2020-06-01T11:22:53Z

Allow expressing client's location in terms of CRUSH hierarchy as a set of (bucket type name, bucket name) pairs. The userspace syntax "crush_location = key1=value1 key2=value2" is incompatible with mount options and needed adaptation. Key-value pairs are separated by '|' and we use ':' instead of '=' to separate keys from values. So for: crush_location = host=foo rack=bar one would write: crush_location=host:foo|rack:bar As in userspace, "multipath" locations are supported, so indicating locality for parallel hierarchies is possible: crush_location=rack:foo1|rack:foo2|datacenter:bar Signed-off-by: Ilya Dryomov Reviewed-by: Jeff Layton

libceph: add non-asserting rbtree insertion helper

2020-06-01T11:22:53Z

Needed for the next commit and useful for ceph_pg_pool_info tree as well. I'm leaving the asserting helper in for now, but we should look at getting rid of it in the future. Signed-off-by: Ilya Dryomov Reviewed-by: Jeff Layton

ceph: move to a dedicated slabcache for mds requests

2020-03-30T10:42:41Z

On my machine (x86_64) this struct is 952 bytes, which gets rounded up to 1024 by kmalloc. Move this to a dedicated slabcache, so we can allocate them without the extra 72 bytes of overhead per. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph_parse_param(), ceph_parse_mon_ips(): switch to passing fc_log

2020-02-07T19:48:34Z

... and now errorf() et.al. are never called with NULL fs_context, so we can get rid of conditional in those. Signed-off-by: Al Viro

libceph, rbd, ceph: convert to use the new mount API

2019-11-27T21:28:37Z

Convert the ceph filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. [ Numerous string handling, leak and regression fixes; rbd conversion was particularly broken and had to be redone almost from scratch. ] Signed-off-by: David Howells Signed-off-by: Jeff Layton Signed-off-by: Ilya Dryomov

libceph: add function that reset client's entity addr

2019-09-16T10:06:23Z

This function also re-open connections to OSD/MON, and re-send in-flight OSD requests after re-opening connections to OSD. Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

libceph: bump CEPH_MSG_MAX_DATA_LEN (again)

2019-07-08T12:01:45Z

This time for rbd object map. Object maps are limited in size to 256000000 objects, two bits per object. Signed-off-by: Ilya Dryomov Reviewed-by: Dongsheng Yang