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2012-11-01libceph: define ceph_pg_pool_name_by_id()Alex Elder
Define and export function ceph_pg_pool_name_by_id() to supply the name of a pg pool whose id is given. This will be used by the next patch. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2012-10-30libceph: fix osdmap decode error pathsSage Weil
Ensure that we set the err value correctly so that we do not pass a 0 value to ERR_PTR and confuse the calling code. (In particular, osd_client.c handle_map() will BUG(!newmap)). Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-10-01libceph: check for invalid mappingSage Weil
If we encounter an invalid (e.g., zeroed) mapping, return an error and avoid a divide by zero. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-07-31libceph: support crush tunablesSage Weil
The server side recently added support for tuning some magic crush variables. Decode these variables if they are present, or use the default values if they are not present. Corresponds to ceph.git commit 89af369c25f274fe62ef730e5e8aad0c54f1e5a5. Signed-off-by: caleb miles <caleb.miles@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
2012-06-15Merge tag 'v3.5-rc1'Sage Weil
Linux 3.5-rc1 Conflicts: net/ceph/messenger.c
2012-06-07libceph: fix overflow in osdmap_apply_incremental()Xi Wang
On 32-bit systems, a large `pglen' would overflow `pglen*sizeof(u32)' and bypass the check ceph_decode_need(p, end, pglen*sizeof(u32), bad). It would also overflow the subsequent kmalloc() size, leading to out-of-bounds write. Signed-off-by: Xi Wang <xi.wang@gmail.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-06-07libceph: fix overflow in osdmap_decode()Xi Wang
On 32-bit systems, a large `n' would overflow `n * sizeof(u32)' and bypass the check ceph_decode_need(p, end, n * sizeof(u32), bad). It would also overflow the subsequent kmalloc() size, leading to out-of-bounds write. Signed-off-by: Xi Wang <xi.wang@gmail.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-06-07libceph: fix overflow in __decode_pool_names()Xi Wang
`len' is read from network and thus needs validation. Otherwise a large `len' would cause out-of-bounds access via the memcpy() call. In addition, len = 0xffffffff would overflow the kmalloc() size, leading to out-of-bounds write. This patch adds a check of `len' via ceph_decode_need(). Also use kstrndup rather than kmalloc/memcpy. [elder@inktank.com: added -ENOMEM return for null kstrndup() result] Signed-off-by: Xi Wang <xi.wang@gmail.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-05-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds
Pull ceph updates from Sage Weil: "There are some updates and cleanups to the CRUSH placement code, a bug fix with incremental maps, several cleanups and fixes from Josh Durgin in the RBD block device code, a series of cleanups and bug fixes from Alex Elder in the messenger code, and some miscellaneous bounds checking and gfp cleanups/fixes." Fix up trivial conflicts in net/ceph/{messenger.c,osdmap.c} due to the networking people preferring "unsigned int" over just "unsigned". * git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (45 commits) libceph: fix pg_temp updates libceph: avoid unregistering osd request when not registered ceph: add auth buf in prepare_write_connect() ceph: rename prepare_connect_authorizer() ceph: return pointer from prepare_connect_authorizer() ceph: use info returned by get_authorizer ceph: have get_authorizer methods return pointers ceph: ensure auth ops are defined before use ceph: messenger: reduce args to create_authorizer ceph: define ceph_auth_handshake type ceph: messenger: check return from get_authorizer ceph: messenger: rework prepare_connect_authorizer() ceph: messenger: check prepare_write_connect() result ceph: don't set WRITE_PENDING too early ceph: drop msgr argument from prepare_write_connect() ceph: messenger: send banner in process_connect() ceph: messenger: reset connection kvec caller libceph: don't reset kvec in prepare_write_banner() ceph: ignore preferred_osd field ceph: fully initialize new layout ...
2012-05-22libceph: fix pg_temp updatesSage Weil
Usually, we are adding pg_temp entries or removing them. Occasionally they update. In that case, osdmap_apply_incremental() was failing because the rbtree entry already exists. Fix by removing the existing entry before inserting a new one. Fixes http://tracker.newdream.net/issues/2446 Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-05-07crush: warn on do_rule failureSage Weil
If we get an error code from crush_do_rule(), print an error to the console. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
2012-05-07crush: remove parent mapsSage Weil
These were used for the ill-fated forcefeed feature. Remove them. Reflects ceph.git commit ebdf80edfecfbd5a842b71fbe5732857994380c1. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
2012-05-07crush: remove forcefeed functionalitySage Weil
Remove forcefeed functionality from CRUSH. This is an ugly misfeature that is mostly useless and unused. Remove it. Reflects ceph.git commit ed974b5000f2851207d860a651809af4a1867942. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com> Conflicts: net/ceph/crush/mapper.c
2012-05-07ceph: drop support for preferred_osd pgsSage Weil
This was an ill-conceived feature that has been removed from Ceph. Do this gracefully: - reject attempts to specify a preferred_osd via the ioctl - stop exposing this information via virtual xattrs - always fill in -1 for requests, in case we talk to an older server - don't calculate preferred_osd placements/pgids Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
2012-04-15net: cleanup unsigned to unsigned intEric Dumazet
Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-22libceph: fix overflow check in crush_decode()Xi Wang
The existing overflow check (n > ULONG_MAX / b) didn't work, because n = ULONG_MAX / b would both bypass the check and still overflow the allocation size a + n * b. The correct check should be (n > (ULONG_MAX - a) / b). Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
2011-09-28libceph: fix pg_temp mapping updateSage Weil
The incremental map updates have a record for each pg_temp mapping that is to be add/updated (len > 0) or removed (len == 0). The old code was written as if the updates were a complete enumeration; that was just wrong. Update the code to remove 0-length entries and drop the rbtree traversal. This avoids misdirected (and hung) requests that manifest as server errors like [WRN] client4104 10.0.1.219:0/275025290 misdirected client4104.1:129 0.1 to osd0 not [1,0] in e11/11 Signed-off-by: Sage Weil <sage@newdream.net>
2011-09-28libceph: fix pg_temp mapping calculationSage Weil
We need to apply the modulo pg_num calculation before looking up a pgid in the pg_temp mapping rbtree. This fixes pg_temp mappings, and fixes (some) misdirected requests that result in messages like [WRN] client4104 10.0.1.219:0/275025290 misdirected client4104.1:129 0.1 to osd0 not [1,0] in e11/11 on the server and stall make the client block without getting a reply (at least until the pg_temp mapping goes way, but that can take a long long time). Reorder calc_pg_raw() a bit to make more sense. Signed-off-by: Sage Weil <sage@newdream.net>
2011-05-24libceph: handle new osdmap down/state change encodingSage Weil
Old incrementals encode a 0 value (nearly always) when an osd goes down. Change that to allow any state bit(s) to be flipped. Special case 0 to mean flip the CEPH_OSD_UP bit to mimic the old behavior. Signed-off-by: Sage Weil <sage@newdream.net>
2011-05-19libceph: fix osdmap timestamp assignmentSage Weil
Signed-off-by: Sage Weil <sage@newdream.net>
2011-01-12ceph: Always free allocated memory in osdmap_decode()Jesper Juhl
Always free memory allocated to 'pi' in net/ceph/osdmap.c::osdmap_decode(). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20ceph: factor out libceph from Ceph file systemYehuda Sadeh
This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil <sage@newdream.net>