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2014-06-12Merge branch 'for-linus' of ↵Linus Torvalds3-7/+153
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "This has a mix of bug fixes and cleanups. Alex's patch fixes a rare race in RBD. Ilya's patches fix an ENOENT check when a second rbd image is mapped and a couple memory leaks. Zheng fixes several issues with fragmented directories and multiple MDSs. Josh fixes a spin/sleep issue, and Josh and Guangliang's patches fix setting and unsetting RBD images read-only. Naturally there are several other cleanups mixed in for good measure" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (23 commits) rbd: only set disk to read-only once rbd: move calls that may sleep out of spin lock range rbd: add ioctl for rbd ceph: use truncate_pagecache() instead of truncate_inode_pages() ceph: include time stamp in every MDS request rbd: fix ida/idr memory leak rbd: use reference counts for image requests rbd: fix osd_request memory leak in __rbd_dev_header_watch_sync() rbd: make sure we have latest osdmap on 'rbd map' libceph: add ceph_monc_wait_osdmap() libceph: mon_get_version request infrastructure libceph: recognize poolop requests in debugfs ceph: refactor readpage_nounlock() to make the logic clearer mds: check cap ID when handling cap export message ceph: remember subtree root dirfrag's auth MDS ceph: introduce ceph_fill_fragtree() ceph: handle cap import atomically ceph: pre-allocate ceph_cap struct for ceph_add_cap() ceph: update inode fields according to issued caps rbd: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO ...
2014-06-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds1-1/+1
Pull networking updates from David Miller: 1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov. 2) Multiqueue support in xen-netback and xen-netfront, from Andrew J Benniston. 3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn Mork. 4) BPF now has a "random" opcode, from Chema Gonzalez. 5) Add more BPF documentation and improve test framework, from Daniel Borkmann. 6) Support TCP fastopen over ipv6, from Daniel Lee. 7) Add software TSO helper functions and use them to support software TSO in mvneta and mv643xx_eth drivers. From Ezequiel Garcia. 8) Support software TSO in fec driver too, from Nimrod Andy. 9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli. 10) Handle broadcasts more gracefully over macvlan when there are large numbers of interfaces configured, from Herbert Xu. 11) Allow more control over fwmark used for non-socket based responses, from Lorenzo Colitti. 12) Do TCP congestion window limiting based upon measurements, from Neal Cardwell. 13) Support busy polling in SCTP, from Neal Horman. 14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru. 15) Bridge promisc mode handling improvements from Vlad Yasevich. 16) Don't use inetpeer entries to implement ID generation any more, it performs poorly, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits) rtnetlink: fix userspace API breakage for iproute2 < v3.9.0 tcp: fixing TLP's FIN recovery net: fec: Add software TSO support net: fec: Add Scatter/gather support net: fec: Increase buffer descriptor entry number net: fec: Factorize feature setting net: fec: Enable IP header hardware checksum net: fec: Factorize the .xmit transmit function bridge: fix compile error when compiling without IPv6 support bridge: fix smatch warning / potential null pointer dereference via-rhine: fix full-duplex with autoneg disable bnx2x: Enlarge the dorq threshold for VFs bnx2x: Check for UNDI in uncommon branch bnx2x: Fix 1G-baseT link bnx2x: Fix link for KR with swapped polarity lane sctp: Fix sk_ack_backlog wrap-around problem net/core: Add VF link state control policy net/fsl: xgmac_mdio is dependent on OF_MDIO net/fsl: Make xgmac_mdio read error message useful net_sched: drr: warn when qdisc is not work conserving ...
2014-06-12Merge commit '9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linusAl Viro2-1/+24
Backmerge of dcache.c changes from mainline. It's that, or complete rebase... Conflicts: fs/splice.c Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-06-11ceph: remove bogus externstephen hemminger1-1/+1
Sparse complained about this bogus extern on definition of a function. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-06libceph: add ceph_monc_wait_osdmap()Ilya Dryomov1-0/+27
Add ceph_monc_wait_osdmap(), which will block until the osdmap with the specified epoch is received or timeout occurs. Export both of these as they are going to be needed by rbd. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2014-06-06libceph: mon_get_version request infrastructureIlya Dryomov3-5/+122
Add support for mon_get_version requests to libceph. This reuses much of the ceph_mon_generic_request infrastructure, with one exception. Older OSDs don't set mon_get_version reply hdr->tid even if the original request had a non-zero tid, which makes it impossible to lookup ceph_mon_generic_request contexts by tid in get_generic_reply() for such replies. As a workaround, we allocate a reply message on the reply path. This can probably interfere with revoke, but I don't see a better way. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2014-06-06libceph: recognize poolop requests in debugfsIlya Dryomov1-2/+4
Recognize poolop requests in debugfs monc dump, fix prink format specifiers - tid is unsigned. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2014-05-16crush: decode and initialize chooseleaf_vary_rIlya Dryomov1-0/+5
Commit e2b149cc4ba0 ("crush: add chooseleaf_vary_r tunable") added the crush_map::chooseleaf_vary_r field but missed the decode part. This lead to misdirected requests caused by incorrect raw crush mapping sets. Fixes: http://tracker.ceph.com/issues/8226 Reported-and-Tested-by: Dmitry Smirnov <onlyjob@member.fsf.org> Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2014-05-16libceph: fix corruption when using page_count 0 page in rbdChunwei Chen1-1/+19
It has been reported that using ZFSonLinux on rbd will result in memory corruption. The bug report can be found here: https://github.com/zfsonlinux/spl/issues/241 http://tracker.ceph.com/issues/7790 The reason is that ZFS will send pages with page_count 0 into rbd, which in turns send them to tcp_sendpage. However, tcp_sendpage cannot deal with page_count 0, as it will do get_page and put_page, and erroneously free the page. This type of issue has been noted before, and handled in iscsi, drbd, etc. So, rbd should also handle this. This fix address this issue by fall back to slower sendmsg when page_count 0 detected. Cc: Sage Weil <sage@inktank.com> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: stable@vger.kernel.org Signed-off-by: Chunwei Chen <tuxoko@gmail.com> Reviewed-by: Ilya Dryomov <ilya.dryomov@inktank.com>
2014-05-06ceph_sync_read: stop poking into iov_iter gutsAl Viro1-31/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-05-05Merge branch 'for-linus' of ↵Linus Torvalds1-4/+5
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph fixes from Sage Weil: "First, there is a critical fix for the new primary-affinity function that went into -rc1. The second batch of patches from Zheng fix a range of problems with directory fragmentation, readdir, and a few odds and ends for cephfs" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: reserve caps for file layout/lock MDS requests ceph: avoid releasing caps that are being used ceph: clear directory's completeness when creating file libceph: fix non-default values check in apply_primary_affinity() ceph: use fpos_cmp() to compare dentry positions ceph: check directory's completeness before emitting directory entry
2014-04-28libceph: fix non-default values check in apply_primary_affinity()Ilya Dryomov1-4/+5
osd_primary_affinity array is indexed into incorrectly when checking for non-default primary-affinity values. This nullifies the impact of the rest of the apply_primary_affinity() and results in misdirected requests. if (osds[i] != CRUSH_ITEM_NONE && osdmap->osd_primary_affinity[i] != ^^^ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) { For a pool with size 2, this always ends up checking osd0 and osd1 primary_affinity values, instead of the values that correspond to the osds in question. E.g., given a [2,3] up set and a [max,max,0,max] primary affinity vector, requests are still sent to osd2, because both osd0 and osd1 happen to have max primary_affinity values and therefore we return from apply_primary_affinity() early on the premise that all osds in the given set have max (default) values. Fix it. Fixes: http://tracker.ceph.com/issues/7954 Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2014-04-11net: Fix use after free by removing length arg from sk_data_ready callbacks.David S. Miller1-1/+1
Several spots in the kernel perform a sequence like: skb_queue_tail(&sk->s_receive_queue, skb); sk->sk_data_ready(sk, skb->len); But at the moment we place the SKB onto the socket receive queue it can be consumed and freed up. So this skb->len access is potentially to freed up memory. Furthermore, the skb->len can be modified by the consumer so it is possible that the value isn't accurate. And finally, no actual implementation of this callback actually uses the length argument. And since nobody actually cared about it's value, lots of call sites pass arbitrary values in such as '0' and even '1'. So just remove the length argument from the callback, that way there is no confusion whatsoever and all of these use-after-free cases get fixed as a side effect. Based upon a patch by Eric Dumazet and his suggestion to audit this issue tree-wide. Signed-off-by: David S. Miller <davem@davemloft.net>
2014-04-07Merge branch 'for-linus' of ↵Linus Torvalds5-316/+864
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "The biggest chunk is a series of patches from Ilya that add support for new Ceph osd and crush map features, including some new tunables, primary affinity, and the new encoding that is needed for erasure coding support. This brings things into parity with the server side and the looming firefly release. There is also support for allocation hints in RBD that help limit fragmentation on the server side. There is also a series of patches from Zheng fixing NFS reexport, directory fragmentation support, flock vs fnctl behavior, and some issues with clustered MDS. Finally, there are some miscellaneous fixes from Yunchuan Wen for fscache, Fabian Frederick for ACLs, and from me for fsync(dirfd) behavior" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (79 commits) ceph: skip invalid dentry during dcache readdir libceph: dump pool {read,write}_tier to debugfs libceph: output primary affinity values on osdmap updates ceph: flush cap release queue when trimming session caps ceph: don't grabs open file reference for aborted request ceph: drop extra open file reference in ceph_atomic_open() ceph: preallocate buffer for readdir reply libceph: enable PRIMARY_AFFINITY feature bit libceph: redo ceph_calc_pg_primary() in terms of ceph_calc_pg_acting() libceph: add support for osd primary affinity libceph: add support for primary_temp mappings libceph: return primary from ceph_calc_pg_acting() libceph: switch ceph_calc_pg_acting() to new helpers libceph: introduce apply_temps() helper libceph: introduce pg_to_raw_osds() and raw_to_up_osds() helpers libceph: ceph_can_shift_osds(pool) and pool type defines libceph: ceph_osd_{exists,is_up,is_down}(osd) definitions libceph: enable OSDMAP_ENC feature bit libceph: primary_affinity decode bits libceph: primary_affinity infrastructure ...
2014-04-04libceph: dump pool {read,write}_tier to debugfsIlya Dryomov1-3/+3
Dump pool {read,write}_tier to debugfs. While at it, fixup printk type specifiers and remove the unnecessary cast to unsigned long long. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
2014-04-04libceph: output primary affinity values on osdmap updatesIlya Dryomov1-0/+2
Similar to osd weights, output primary affinity values on incremental osdmap updates. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
2014-04-04libceph: redo ceph_calc_pg_primary() in terms of ceph_calc_pg_acting()Ilya Dryomov1-75/+4
Reimplement ceph_calc_pg_primary() in terms of ceph_calc_pg_acting() and get rid of the now unused calc_pg_raw(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: add support for osd primary affinityIlya Dryomov1-0/+68
Respond to non-default primary_affinity values accordingly. (Primary affinity allows the admin to shift 'primary responsibility' away from specific osds, effectively shifting around the read side of the workload and whatever overhead is incurred by peering and writes by virtue of being the primary). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: add support for primary_temp mappingsIlya Dryomov1-1/+6
Change apply_temp() to override primary in the same way pg_temp overrides osd set. primary_temp overrides pg_temp primary too. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: return primary from ceph_calc_pg_acting()Ilya Dryomov2-14/+16
In preparation for adding support for primary_temp, stop assuming primaryness: add a primary out parameter to ceph_calc_pg_acting() and change call sites accordingly. Primary is now specified separately from the order of osds in the set. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: switch ceph_calc_pg_acting() to new helpersIlya Dryomov1-13/+38
Switch ceph_calc_pg_acting() to new helpers: pg_to_raw_osds(), raw_to_up_osds() and apply_temps(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: introduce apply_temps() helperIlya Dryomov1-0/+52
apply_temp() helper for applying various temporary mappings (at this point only pg_temp mappings) to the up set, therefore transforming it into an acting set. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: introduce pg_to_raw_osds() and raw_to_up_osds() helpersIlya Dryomov1-0/+76
pg_to_raw_osds() helper for computing a raw (crush) set, which can contain non-existant and down osds. raw_to_up_osds() helper for pruning non-existant and down osds from the raw set, therefore transforming it into an up set, and determining up primary. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: primary_affinity decode bitsIlya Dryomov1-0/+72
Add two helpers to decode primary_affinity (full map, vector<u32>) and new_primary_affinity (inc map, map<u32, u32>) and switch to them. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: primary_affinity infrastructureIlya Dryomov2-2/+50
Add primary_affinity infrastructure. primary_affinity values are stored in an max_osd-sized array, hanging off ceph_osdmap, similar to a osd_weight array. Introduce {get,set}_primary_affinity() helpers, primarily to return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY when no affinity has been set and to abstract out osd_primary_affinity array allocation and initialization. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: primary_temp decode bitsIlya Dryomov1-0/+69
Add a common helper to decode both primary_temp (full map, map<pg_t, u32>) and new_primary_temp (inc map, same) and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: primary_temp infrastructureIlya Dryomov2-1/+16
Add primary_temp mappings infrastructure. struct ceph_pg_mapping is overloaded, primary_temp mappings are stored in an rb-tree, rooted at ceph_osdmap, in a manner similar to pg_temp mappings. Dump primary_temp mappings to /sys/kernel/debug/ceph/<client>/osdmap, one 'primary_temp <pgid> <osd>' per line, e.g: primary_temp 2.6 4 Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: generalize ceph_pg_mappingIlya Dryomov2-6/+6
In preparation for adding support for primary_temp mappings, generalize struct ceph_pg_mapping so it can hold mappings other than pg_temp. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: introduce get_osdmap_client_data_v()Ilya Dryomov1-16/+65
Full and incremental osdmaps are structured identically and have identical headers. Add a helper to decode both "old" (16-bit version, v6) and "new" (8-bit struct_v+struct_compat+struct_len, v7) osdmap enconding headers and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: introduce decode{,_new}_pg_temp() and switch to themIlya Dryomov1-72/+67
Consolidate pg_temp (full map, map<pg_t, vector<u32>>) and new_pg_temp (inc map, same) decoding logic into a common helper and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: switch osdmap_set_max_osd() to krealloc()Ilya Dryomov1-15/+17
Use krealloc() instead of rolling our own. (krealloc() with a NULL first argument acts as a kmalloc()). Properly initalize the new array elements. This is needed to make future additions to osdmap easier. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: introduce decode{,_new}_pools() and switch to themIlya Dryomov1-37/+57
Consolidate pools (full map, map<u64, pg_pool_t>) and new_pools (inc map, same) decoding logic into a common helper and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: rename __decode_pool{,_names}() to decode_pool{,_names}()Ilya Dryomov1-6/+8
To be in line with all the other osdmap decode helpers. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: fix and clarify ceph_decode_need() sizesIlya Dryomov1-6/+7
Sum up sizeof(...) results instead of (incorrectly) hard-coding the number of bytes, expressed in ints and longs. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: nuke bogus encoding version check in osdmap_apply_incremental()Ilya Dryomov1-5/+4
Only version 6 of osdmap encoding is supported, anything other than version 6 results in an error and halts the decoding process. Checking if version is >= 5 is therefore bogus. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: fixup error handling in osdmap_apply_incremental()Ilya Dryomov1-32/+34
The existing error handling scheme requires resetting err to -EINVAL prior to calling any ceph_decode_* macro. This is ugly and fragile, and there already are a few places where we would return 0 on error, due to a missing reset. Follow osdmap_decode() and fix this by adding a special e_inval label to be used by all ceph_decode_* macros. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: fix crush_decode() call site in osdmap_decode()Ilya Dryomov1-5/+2
The size of the memory area feeded to crush_decode() should be limited not only by osdmap end, but also by the crush map length. Also, drop unnecessary dout() (dout() in crush_decode() conveys the same info) and step past crush map only if it is decoded successfully. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: check length of osdmap osd arraysIlya Dryomov1-4/+10
Check length of osd_state, osd_weight and osd_addr arrays. They should all have exactly max_osd elements after the call to osdmap_set_max_osd(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: safely decode max_osd value in osdmap_decode()Ilya Dryomov1-2/+4
max_osd value is not covered by any ceph_decode_need(). Use a safe version of ceph_decode_* macro to decode it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: fixup error handling in osdmap_decode()Ilya Dryomov1-26/+27
The existing error handling scheme requires resetting err to -EINVAL prior to calling any ceph_decode_* macro. This is ugly and fragile, and there already are a few places where we would return 0 on error, due to a missing reset. Fix this by adding a special e_inval label to be used by all ceph_decode_* macros. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: split osdmap allocation and decode stepsIlya Dryomov2-16/+30
Split osdmap allocation and initialization into a separate function, ceph_osdmap_decode(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: dump osdmap and enhance output on decode errorsIlya Dryomov1-6/+15
Dump osdmap in hex on both full and incremental decode errors, to make it easier to match the contents with error offset. dout() map epoch and max_osd value on success. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: dump pg_temp mappings to debugfsIlya Dryomov1-0/+11
Dump pg_temp mappings to /sys/kernel/debug/ceph/<client>/osdmap, one 'pg_temp <pgid> [<osd>, ..., <osd>]' per line, e.g: pg_temp 2.6 [2,3,4] Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: do not prefix osd lines with \t in debugfs outputIlya Dryomov1-1/+1
To save screen space in anticipation of more fields (e.g. primary affinity). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04libceph: refer to osdmap directly in osdmap_show()Ilya Dryomov1-12/+14
To make it more readable and save screen space. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-04crush: add SET_CHOOSELEAF_VARY_R stepIlya Dryomov1-0/+5
This lets you adjust the vary_r tunable on a per-rule basis. Reflects ceph.git commit f944ccc20aee60a7d8da7e405ec75ad1cd449fac. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2014-04-04crush: add chooseleaf_vary_r tunableIlya Dryomov1-6/+24
The current crush_choose_firstn code will re-use the same 'r' value for the recursive call. That means that if we are hitting a collision or rejection for some reason (say, an OSD that is marked out) and need to retry, we will keep making the same (bad) choice in that recursive selection. Introduce a tunable that fixes that behavior by incorporating the parent 'r' value into the recursive starting point, so that a different path will be taken in subsequent placement attempts. Note that this was done from the get-go for the new crush_choose_indep algorithm. This was exposed by a user who was seeing PGs stuck in active+remapped after reweight-by-utilization because the up set mapped to a single OSD. Reflects ceph.git commit a8e6c9fbf88bad056dd05d3eb790e98a5e43451a. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2014-04-04crush: allow crush rules to set (re)tries counts to 0Ilya Dryomov1-2/+2
These two fields are misnomers; they are *retry* counts. Reflects ceph.git commit f17caba8ae0cad7b6f8f35e53e5f73b444696835. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2014-04-04crush: fix off-by-one errors in total_tries refactorIlya Dryomov1-19/+27
Back in 27f4d1f6bc32c2ed7b2c5080cbd58b14df622607 we refactored the CRUSH code to allow adjustment of the retry counts on a per-pool basis. That commit had an off-by-one bug: the previous "tries" counter was a *retry* count, not a *try* count, but the new code was passing in 1 meaning there should be no retries. Fix the ftotal vs tries comparison to use < instead of <= to fix the problem. Note that the original code used <= here, which means the global "choose_total_tries" tunable is actually counting retries. Compensate for that by adding 1 in crush_do_rule when we pull the tunable into the local variable. This was noticed looking at output from a user provided osdmap. Unfortunately the map doesn't illustrate the change in mapping behavior and I haven't managed to construct one yet that does. Inspection of the crush debug output now aligns with prior versions, though. Reflects ceph.git commit 795704fd615f0b008dcc81aa088a859b2d075138. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2014-04-04libceph: fix oops in ceph_msg_data_{pages,pagelist}_advance()Yan, Zheng1-0/+6
When there is no more data, ceph_msg_data_{pages,pagelist}_advance() should not move on to the next page. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 22:49:49 +0000