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a9ed8d3279
rbd rounds off and ignores discards that are smaller than alloc_size,
but the page cache is invalidated according to the original offset and
length, before calling into the driver. For a 512~4193792 discard, all
pages except for the first will be invalidated, but the first page may
remain cached after being partially zeroed out. This results in an
inconsistency when alloc_size != 512. E.g. for 64k:
0 512 4k 64k 4M
| | | | |
page cache: xxxxxxxx00000000xxxxxxxx0000000000000000
RADOS: xxxxxxxxxxxxxxxxxxxxxxxx0000000000000000
Given that these tests asserts on-disk state, we need to read directly
from disk. krbd_discard_512b.t and krbd_zeroout.t are fine -- there is
no rounding there.
Fixes: https://tracker.ceph.com/issues/41753
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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| .. | ||
| archs | ||
| btrfs | ||
| cephfs | ||
| client | ||
| clusters | ||
| config | ||
| crontab | ||
| debug | ||
| distros | ||
| erasure-code | ||
| libceph | ||
| machine_types | ||
| mds | ||
| mon/bootstrap | ||
| msgr | ||
| nightlies | ||
| objectstore | ||
| objectstore_cephfs | ||
| overrides | ||
| packages | ||
| qa_scripts | ||
| rbd | ||
| releases | ||
| rgw_frontend | ||
| rgw_pool_type | ||
| standalone | ||
| suites | ||
| tasks | ||
| timezone | ||
| workunits | ||
| .gitignore | ||
| find-used-ports.sh | ||
| loopall.sh | ||
| Makefile | ||
| README | ||
| run_xfstests_qemu.sh | ||
| run_xfstests-obsolete.sh | ||
| run_xfstests.sh | ||
| run-standalone.sh | ||
| runallonce.sh | ||
| runoncfuse.sh | ||
| runonkclient.sh | ||
| setup-chroot.sh | ||
| tox.ini | ||
| valgrind.supp | ||
ceph-qa-suite ------------- clusters/ - some predefined cluster layouts suites/ - set suite The suites directory has a hierarchical collection of tests. This can be freeform, but generally follows the convention of suites/<test suite name>/<test group>/... A test is described by a yaml fragment. A test can exist as a single .yaml file in the directory tree. For example: suites/foo/one.yaml suites/foo/two.yaml is a simple group of two tests. A directory with a magic '+' file represents a test that combines all other items in the directory into a single yaml fragment. For example: suites/foo/bar/+ suites/foo/bar/a.yaml suites/foo/bar/b.yaml suites/foo/bar/c.yaml is a single test consisting of a + b + c. A directory with a magic '%' file represents a test matrix formed from all other items in the directory. For example, suites/baz/% suites/baz/a.yaml suites/baz/b/b1.yaml suites/baz/b/b2.yaml suites/baz/c.yaml suites/baz/d/d1.yaml suites/baz/d/d2.yaml is a 4-dimensional test matrix. Two dimensions (a, c) are trivial (1 item), so this is really 2x2 = 4 tests, which are a + b1 + c + d1 a + b1 + c + d2 a + b2 + c + d1 a + b2 + c + d2 A directory with a magic '$' file represents a test where one of the other items is chosen randomly. For example, suites/foo/$ suites/foo/a.yaml suites/foo/b.yaml suites/foo/c.yaml is a single test. It will be either a.yaml, b.yaml or c.yaml. This can be used in conjunction with the '%' file in other directories to run a series of tests without causing an unwanted increase in the total number of jobs run. Symlinks are okay. The teuthology code can be found in https://github.com/ceph/teuthology.git