allow specifying position of extent operation in multi-operations
osd request. This is required for cephfs to convert inline data to
normal data (compare xattr, then write object).
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
Add CEPH_OSD_OP_CREATE support. Also change libceph to not treat
CEPH_OSD_OP_DELETE as an extent op and add an assert to that end.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
Session key is required when calculating message signature. Save the session
key in authorizer, this avoid lookup ticket handler for each message
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Use kvfree() from linux/mm.h instead, which is identical. Also fix the
ceph_buffer comment: we will allocate with kmalloc() up to 32k - the
value of PAGE_ALLOC_COSTLY_ORDER, but that really is just an
implementation detail so don't mention it at all.
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
kick_requests() can put linger requests on the notarget list. This
means we need to clear the much-overloaded req->r_req_lru_item in
__unregister_linger_request() as well, or we get an assertion failure
in ceph_osdc_release_request() - !list_empty(&req->r_req_lru_item).
AFAICT the assumption was that registered linger requests cannot be on
any of req->r_req_lru_item lists, but that's clearly not the case.
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Requests have to be unlinked from both osd->o_requests (normal
requests) and osd->o_linger_requests (linger requests) lists when
clearing req->r_osd. Otherwise __unregister_linger_request() gets
confused and we trip over a !list_empty(&osd->o_linger_requests)
assert in __remove_osd().
MON=1 OSD=1:
# cat remove-osd.sh
#!/bin/bash
rbd create --size 1 test
DEV=$(rbd map test)
ceph osd out 0
sleep 3
rbd map dne/dne # obtain a new osdmap as a side effect
rbd unmap $DEV & # will block
sleep 3
ceph osd in 0
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Commit c27a3e4d66 ("libceph: do not hard code max auth ticket len")
while fixing a buffer overlow tried to keep the same as much of the
surrounding code as possible and introduced an unnecessary kmalloc() in
the unencrypted ticket path. It is likely to fail on huge tickets, so
get rid of it.
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
This patch has ceph's lib code use the memalloc flags.
If the VM layer needs to write data out to free up memory to handle new
allocation requests, the block layer must be able to make forward progress.
To handle that requirement we use structs like mempools to reserve memory for
objects like bios and requests.
The problem is when we send/receive block layer requests over the network
layer, net skb allocations can fail and the system can lock up.
To solve this, the memalloc related flags were added. NBD, iSCSI
and NFS uses these flags to tell the network/vm layer that it should
use memory reserves to fullfill allcation requests for structs like
skbs.
I am running ceph in a bunch of VMs in my laptop, so this patch was
not tested very harshly.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
Pull Ceph updates from Sage Weil:
"There is the long-awaited discard support for RBD (Guangliang Zhao,
Josh Durgin), a pile of RBD bug fixes that didn't belong in late -rc's
(Ilya Dryomov, Li RongQing), a pile of fs/ceph bug fixes and
performance and debugging improvements (Yan, Zheng, John Spray), and a
smattering of cleanups (Chao Yu, Fabian Frederick, Joe Perches)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (40 commits)
ceph: fix divide-by-zero in __validate_layout()
rbd: rbd workqueues need a resque worker
libceph: ceph-msgr workqueue needs a resque worker
ceph: fix bool assignments
libceph: separate multiple ops with commas in debugfs output
libceph: sync osd op definitions in rados.h
libceph: remove redundant declaration
ceph: additional debugfs output
ceph: export ceph_session_state_name function
ceph: include the initial ACL in create/mkdir/mknod MDS requests
ceph: use pagelist to present MDS request data
libceph: reference counting pagelist
ceph: fix llistxattr on symlink
ceph: send client metadata to MDS
ceph: remove redundant code for max file size verification
ceph: remove redundant io_iter_advance()
ceph: move ceph_find_inode() outside the s_mutex
ceph: request xattrs if xattr_version is zero
rbd: set the remaining discard properties to enable support
rbd: use helpers to handle discard for layered images correctly
...
Commit f363e45fd1 ("net/ceph: make ceph_msgr_wq non-reentrant")
effectively removed WQ_MEM_RECLAIM flag from ceph_msgr_wq. This is
wrong - libceph is very much a memory reclaim path, so restore it.
Cc: stable@vger.kernel.org # needs backporting for < 3.12
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Tested-by: Micha Krause <micha@krausam.de>
Reviewed-by: Sage Weil <sage@redhat.com>
For requests with multiple ops, separate ops with commas instead of \t,
which is a field separator here.
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Bring in missing osd ops and strings, use macros to eliminate multiple
points of maintenance.
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
this allow pagelist to present data that may be sent multiple times.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
queue_work() doesn't "fail to queue", it returns false if work was
already on a queue, which can't happen here since we allocate
event_work right before we queue it. So don't bother at all.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Use the more common pr_warn.
Other miscellanea:
o Coalesce formats
o Realign arguments
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
If the state variable is krealloced successfully, map->osd_state will be
freed, once following two reallocation failed, and exit the function
without resetting map->osd_state, map->osd_state become a wild pointer.
fix it by resetting them after krealloc successfully.
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
We want "cbc(aes)" algorithm, so select CRYPTO_CBC too, not just
CRYPTO_AES. Otherwise on !CRYPTO_CBC kernels we fail rbd map/mount
with
libceph: error -2 building auth method x request
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Both not yet registered (r_linger && list_empty(&r_linger_item)) and
registered linger requests should use the new tid on resend to avoid
the dup op detection logic on the OSDs, yet we were doing this only for
"registered" case. Factor out and simplify the "registered" logic and
use the new helper for "not registered" case as well.
Fixes: http://tracker.ceph.com/issues/8806
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Pull security subsystem updates from James Morris.
Mostly ima, selinux, smack and key handling updates.
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (65 commits)
integrity: do zero padding of the key id
KEYS: output last portion of fingerprint in /proc/keys
KEYS: strip 'id:' from ca_keyid
KEYS: use swapped SKID for performing partial matching
KEYS: Restore partial ID matching functionality for asymmetric keys
X.509: If available, use the raw subjKeyId to form the key description
KEYS: handle error code encoded in pointer
selinux: normalize audit log formatting
selinux: cleanup error reporting in selinux_nlmsg_perm()
KEYS: Check hex2bin()'s return when generating an asymmetric key ID
ima: detect violations for mmaped files
ima: fix race condition on ima_rdwr_violation_check and process_measurement
ima: added ima_policy_flag variable
ima: return an error code from ima_add_boot_aggregate()
ima: provide 'ima_appraise=log' kernel option
ima: move keyring initialization to ima_init()
PKCS#7: Handle PKCS#7 messages that contain no X.509 certs
PKCS#7: Better handling of unsupported crypto
KEYS: Overhaul key identification when searching for asymmetric keys
KEYS: Implement binary asymmetric key ID handling
...
Yan, Zheng
Ilya Dryomov
Mike Christie
Linus Torvalds
Ilya Dryomov
Joe Perches
Li RongQing