In preparation for msgr2, rename msgr1 specific states and move the
defines to the header file.
Also drop state transition comments. They don't cover all possible
transitions (e.g. NEGOTIATING -> STANDBY, etc) and currently do more
harm than good.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
unsigned long is a leftover from when con->state used to be a set of
bits managed with set_bit(), clear_bit(), etc. Save a bit of memory.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Our messenger instance addr->port is normally zero -- anything else is
nonsensical because as a client we connect to multiple servers and don't
listen on any port. However, a user can supply an arbitrary addr:port
via ip option and the port is currently preserved. Zero it.
Conversely, make sure our addr->nonce is non-zero. A zero nonce is
special: in combination with a zero port, it is used to blocklist the
entire ip.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Move the logic of grabbing the next message from the queue into its own
function. Like ceph_con_in_msg_alloc(), this is protocol independent.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
ceph_con_in_msg_alloc() is protocol independent, but con->in_hdr (and
struct ceph_msg_header in general) is msgr1 specific. While the struct
is deeply ingrained inside and outside the messenger, con->in_hdr field
can be separated.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Stick with pr_info message because session reset isn't an error most of
the time. When it is (i.e. if the server denies the reconnect attempt),
we get a bunch of other pr_err messages.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
con->peer_global_seq is part of session state. Clear it when
the server tells us to reset, not just in ceph_con_close().
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Move protocol reset bits into ceph_con_reset_protocol(), leaving
just session reset bits.
Note that con->out_skip is now reset on faults. This fixes a crash
in the case of a stateful session getting a fault while in the middle
of revoking a message.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
A fault due to a version mismatch or a feature set mismatch used to be
treated differently from other faults: the connection would get closed
without trying to reconnect and there was a ->bad_proto() connection op
for notifying about that.
This changed a long time ago, see commits 6384bb8b8e ("libceph: kill
bad_proto ceph connection op") and 0fa6ebc600 ("libceph: fix protocol
feature mismatch failure path"). Nowadays these aren't any different
from other faults (i.e. we try to reconnect even though the mismatch
won't resolve until the server is replaced). reset_connection() calls
there are rather confusing because reset_connection() resets a session
together an individual instance of the protocol. This is cleaned up
in the next patch.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The current setting allows the backoff to climb up to 5 minutes. This
is too high -- it becomes hard to tell whether the client is stuck on
something or just in backoff.
In userspace, ms_max_backoff is defaulted to 15 seconds. Let's do the
same.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When we added the btime feature in mainline ceph, we had to extend
struct ceph_mds_request_args so that it could be set. Implement the same
in the kernel client.
Rename ceph_mds_request_head with a _old extension, and a union
ceph_mds_request_args_ext to allow for the extended size of the new
header format.
Add the appropriate code to handle both formats in struct
create_request_message and key the behavior on whether the peer supports
CEPH_FEATURE_FS_BTIME.
The gid_list field in the payload is now populated from the saved
credential. For now, we don't add any support for setting the btime via
setattr, but this does enable us to add that in the future.
[ idryomov: break unnecessarily long lines ]
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
We can always get the mdsc from the session, so there's no need to pass
it in as a separate argument. Pass the session to __prepare_send_request
as well, to prepare for later patches that will need to access it.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Replace req->r_uid/r_gid with an r_cred pointer and take a reference to
that at the point where we previously would sample the two. Use that to
populate the uid and gid in the header and release the reference when
the request is freed.
This should enable us to later add support for sending supplementary
group lists in MDS requests.
[ idryomov: break unnecessarily long lines ]
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
We already have a pointer to the argument struct in req->r_args. Use that
instead of groveling around in the ceph_mds_request_head.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When setting the file/dir layout, it may need data pool info. So
in mds server, it needs to check the osdmap. At present, if mds
doesn't find the data pool specified, it will try to get the latest
osdmap. Now if pass the osd epoch for setxattr, the mds server can
only check this epoch of osdmap.
URL: https://tracker.ceph.com/issues/48504
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The variable i is being initialized with a value that is never read
and it is being updated later with a new value in a for-loop. The
initialization is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Add a new vxattr that allows userspace to list the caps for a specific
directory or file.
[ jlayton: change format delimiter to '/' ]
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Geng Jichao reported a rather complex deadlock involving several
moving parts:
1) readahead is issued against an inode and some of its pages are locked
while the read is in flight
2) the same inode is evicted from the cache, and this task gets stuck
waiting for the page lock because of the above readahead
3) another task is processing a reply trace, and looks up the inode
being evicted while holding the s_mutex. That ends up waiting for the
eviction to complete
4) a write reply for an unrelated inode is then processed in the
ceph_con_workfn job. It calls ceph_check_caps after putting wrbuffer
caps, and that gets stuck waiting on the s_mutex held by 3.
The reply to "1" is stuck behind the write reply in "4", so we deadlock
at that point.
This patch changes the trace processing to call ceph_get_inode outside
of the s_mutex and snap_rwsem, which should break the cycle above.
[ idryomov: break unnecessarily long lines ]
URL: https://tracker.ceph.com/issues/47998
Reported-by: Geng Jichao <gengjichao@jd.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Luis Henriques <lhenriques@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This reverts commit dffdcd7145.
When doing a rename across quota realms, there's a corner case that isn't
handled correctly. Here's a testcase:
mkdir files limit
truncate files/file -s 10G
setfattr limit -n ceph.quota.max_bytes -v 1000000
mv files limit/
The above will succeed because ftruncate(2) won't immediately notify the
MDSs with the new file size, and thus the quota realms stats won't be
updated.
Since the possible fixes for this issue would have a huge performance impact,
the solution for now is to simply revert to returning -EXDEV when doing a cross
quota realms rename.
URL: https://tracker.ceph.com/issues/48203
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
While the MDS cluster is unstable and changing state the client may get
mdsmap updates that will trigger warnings:
[144692.478400] ceph: mdsmap_decode got incorrect state(up:standby-replay)
[144697.489552] ceph: mdsmap_decode got incorrect state(up:standby-replay)
[144697.489580] ceph: mdsmap_decode got incorrect state(up:standby-replay)
This patch downgrades these warnings to debug, as they may flood the logs
if the cluster is unstable for a while.
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
A NULL pointer dereference may occur in __ceph_remove_cap with some of the
callbacks used in ceph_iterate_session_caps, namely trim_caps_cb and
remove_session_caps_cb. Those callers hold the session->s_mutex, so they
are prevented from concurrent execution, but ceph_evict_inode does not.
Since the callers of this function hold the i_ceph_lock, the fix is simply
a matter of returning immediately if caps->ci is NULL.
Cc: stable@vger.kernel.org
URL: https://tracker.ceph.com/issues/43272
Suggested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
write_begin operations are passed a flags parameter that we need to
mirror here, so that we don't (e.g.) recurse back into filesystem code
inappropriately.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
1. monitor's default port is defined by CEPH_MON_PORT
2. CEPH_PORT_START and CEPH_PORT_LAST are not needed.
Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The link count for a directory is defined as inode->i_subdirs + 2,
(for "." and ".."). i_subdirs is only populated when Fs caps are held.
Ensure we grab Fs caps when fetching the link count for a directory.
[ idryomov: break unnecessarily long line ]
URL: https://tracker.ceph.com/issues/48125
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Convert some decodes into unused variables into skips, and fix up some
non-kerneldoc comment headers to not start with "/**".
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Ilya noticed that the first access to a blacklisted mount would often
get back -EACCES, but then subsequent calls would be OK. The problem is
in __do_request. If the session is marked as REJECTED, a hard error is
returned instead of waiting for a new session to come into being.
When the session is REJECTED and the mount was done with
recover_session=clean, queue the request to the waiting_for_map queue,
which will be awoken after tearing down the old session. We can only
do this for sync requests though, so check for async ones first and
just let the callers redrive a sync request.
URL: https://tracker.ceph.com/issues/47385
Reported-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
30 minutes is a long time to wait, and this makes it difficult to test
the feature by manually blocklisting clients. Remove the timeout
infrastructure and just allow the client to reconnect at will.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When recovering a session (a'la recover_session=clean), we want to do
all of the operations that we do on a forced umount, but changing the
mount state to SHUTDOWN is can cause queued MDS requests to fail when
the session comes back. Most of those can idle until the session is
recovered in this situation.
Reserve SHUTDOWN state for forced umount, and make a new RECOVER state
for the forced reconnect situation. Change several tests for equality with
SHUTDOWN to test for that or RECOVER.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This field is an unsigned long currently, which is a bit of a waste on
most arches since this just holds an enum. Make it (signed) int instead.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
We expect to remove dirty caps when the client is blocklisted. Don't
throw a warning in that case.
[ idryomov: break unnecessarily long line ]
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Pull x86 fixes from Thomas Gleixner:
"A set of x86 and membarrier fixes:
- Correct a few problems in the x86 and the generic membarrier
implementation. Small corrections for assumptions about visibility
which have turned out not to be true.
- Make the PAT bits for memory encryption correct vs 4K and 2M/1G
page table entries as they are at a different location.
- Fix a concurrency issue in the the local bandwidth readout of
resource control leading to incorrect values
- Fix the ordering of allocating a vector for an interrupt. The order
missed to respect the provided cpumask when the first attempt of
allocating node local in the mask fails. It then tries the node
instead of trying the full provided mask first. This leads to
erroneous error messages and breaking the (user) supplied affinity
request. Reorder it.
- Make the INT3 padding detection in optprobe work correctly"
* tag 'x86-urgent-2020-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kprobes: Fix optprobe to detect INT3 padding correctly
x86/apic/vector: Fix ordering in vector assignment
x86/resctrl: Fix incorrect local bandwidth when mba_sc is enabled
x86/mm/mem_encrypt: Fix definition of PMD_FLAGS_DEC_WP
membarrier: Execute SYNC_CORE on the calling thread
membarrier: Explicitly sync remote cores when SYNC_CORE is requested
membarrier: Add an actual barrier before rseq_preempt()
x86/membarrier: Get rid of a dubious optimization
Pull block fixes from Jens Axboe:
"This should be it for 5.10.
Mike and Song looked into the warning case, and thankfully it appears
the fix was pretty trivial - we can just change the md device chunk
type to unsigned int to get rid of it. They cannot currently be < 0,
and nobody is checking for that either.
We're reverting the discard changes as the corruption reports came in
very late, and there's just no time to attempt to deal with it at this
point. Reverting the changes in question is the right call for 5.10"
* tag 'block-5.10-2020-12-12' of git://git.kernel.dk/linux-block:
md: change mddev 'chunk_sectors' from int to unsigned
Revert "md: add md_submit_discard_bio() for submitting discard bio"
Revert "md/raid10: extend r10bio devs to raid disks"
Revert "md/raid10: pull codes that wait for blocked dev into one function"
Revert "md/raid10: improve raid10 discard request"
Revert "md/raid10: improve discard request for far layout"
Revert "dm raid: remove unnecessary discard limits for raid10"
Pull SCSI fixes from James Bottomley:
"Five small fixes. Four in drivers:
- hisi_sas: fix internal queue timeout
- be2iscsi: revert a prior fix causing problems
- bnx2i: add missing dependency
- storvsc: late arriving revert of a problem fix
and one in the core.
The core one is a minor change to stop paying attention to the busy
count when returning out of resources because there's a race window
where the queue might not restart due to missing returning I/O"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
Revert "scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback()"
scsi: hisi_sas: Select a suitable queue for internal I/Os
scsi: core: Fix race between handling STS_RESOURCE and completion
scsi: be2iscsi: Revert "Fix a theoretical leak in beiscsi_create_eqs()"
scsi: bnx2i: Requires MMU
Pull i2c fix from Wolfram Sang:
"Bugfix for the AT24 EEPROM driver"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
misc: eeprom: at24: fix NVMEM name with custom AT24 device name
Pull kvm fixes from Paolo Bonzini:
"Bugfixes for ARM, x86 and tools"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
tools/kvm_stat: Exempt time-based counters
KVM: mmu: Fix SPTE encoding of MMIO generation upper half
kvm: x86/mmu: Use cpuid to determine max gfn
kvm: svm: de-allocate svm_cpu_data for all cpus in svm_cpu_uninit()
selftests: kvm/set_memory_region_test: Fix race in move region test
KVM: arm64: Add usage of stage 2 fault lookup level in user_mem_abort()
KVM: arm64: Fix handling of merging tables into a block entry
KVM: arm64: Fix memory leak on stage2 update of a valid PTE
Pull xen fixes from Juergen Gross:
"A short series fixing a regression introduced in 5.9 for running as
Xen dom0 on a system with NVMe backed storage"
* tag 'for-linus-5.10c-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: don't use page->lru for ZONE_DEVICE memory
xen: add helpers for caching grant mapping pages
Pull RISC-V fix from Palmer Dabbelt:
"Just one fix. It's nothing critical, just a randconfig that wasn't
building. That said, it does seem pretty safe and is technically a
regression so I'm sending it along for 5.10:
- define get_cycles64() all the time, as it's used by most
configurations"
* tag 'riscv-for-linus-5.10-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Define get_cycles64() regardless of M-mode
