Hi Gregory, $ uname -a Linux coreos2 3.17.7+ #2 SMP Tue Jan 6 08:22:04 UTC 2015 x86_64 Intel(R) Xeon(R) CPU E5-4620 0 @ 2.20GHz GenuineIntel GNU/Linux Kernel Client, using `mount -t ceph ...` core@coreos2 /var/run/systemd/system $ modinfo ceph filename: /lib/modules/3.17.7+/kernel/fs/ceph/ceph.ko license: GPL description: Ceph filesystem for Linux author: Patience Warnick <patience@xxxxxxxxxxxx> author: Yehuda Sadeh <yehuda@xxxxxxxxxxxxxxx> author: Sage Weil <sage@xxxxxxxxxxxx> alias: fs-ceph depends: libceph intree: Y vermagic: 3.17.7+ SMP mod_unload signer: Magrathea: Glacier signing key sig_key: D4:BB:DE:E9:C6:D8:FC:90:9F:23:59:B2:19:1B:B8:FA:57:A1:AF:D2 sig_hashalgo: sha256 core@coreos2 /var/run/systemd/system $ modinfo libceph filename: /lib/modules/3.17.7+/kernel/net/ceph/libceph.ko license: GPL description: Ceph filesystem for Linux author: Patience Warnick <patience@xxxxxxxxxxxx> author: Yehuda Sadeh <yehuda@xxxxxxxxxxxxxxx> author: Sage Weil <sage@xxxxxxxxxxxx> depends: libcrc32c intree: Y vermagic: 3.17.7+ SMP mod_unload signer: Magrathea: Glacier signing key sig_key: D4:BB:DE:E9:C6:D8:FC:90:9F:23:59:B2:19:1B:B8:FA:57:A1:AF:D2 sig_hashalgo: sha256 ceph is installed on a ubuntu containers (same kernel): $ dpkg -l |grep ceph ii ceph 0.87-1trusty amd64 distributed storage and file system ii ceph-common 0.87-1trusty amd64 common utilities to mount and interact with a ceph storage cluster ii ceph-fs-common 0.87-1trusty amd64 common utilities to mount and interact with a ceph file system ii ceph-fuse 0.87-1trusty amd64 FUSE-based client for the Ceph distributed file system ii ceph-mds 0.87-1trusty amd64 metadata server for the ceph distributed file system ii libcephfs1 0.87-1trusty amd64 Ceph distributed file system client library ii python-ceph 0.87-1trusty amd64 Python libraries for the Ceph distributed filesystem Reproducing the error: at machine 1: core@coreos1 /var/lib/deis/store/logs $ > test.log core@coreos1 /var/lib/deis/store/logs $ echo 1 > test.log core@coreos1 /var/lib/deis/store/logs $ stat test.log File: 'test.log' Size: 2 Blocks: 1 IO Block: 4194304 regular file Device: 0h/0d Inode: 1099511629882 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 500/ core) Gid: ( 500/ core) Access: 2015-01-12 20:05:03.000000000 +0000 Modify: 2015-01-12 20:06:09.637234229 +0000 Change: 2015-01-12 20:06:09.637234229 +0000 Birth: - at machine 2: core@coreos2 /var/lib/deis/store/logs $ stat test.log File: 'test.log' Size: 2 Blocks: 1 IO Block: 4194304 regular file Device: 0h/0d Inode: 1099511629882 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 500/ core) Gid: ( 500/ core) Access: 2015-01-12 20:05:03.000000000 +0000 Modify: 2015-01-12 20:06:09.637234229 +0000 Change: 2015-01-12 20:06:09.000000000 +0000 Birth: - Change time is not updated making some tail libs to not show new content until you force the change time be updated, like running a "touch" in the file. Some tools freeze and trigger other issues in the system. Tests, all in the machine #2: FAILED -> https://github.com/ActiveState/tail FAILED -> /usr/bin/tail of a Google docker image running debian wheezy PASSED -> /usr/bin/tail of a ubuntu 14.04 docker image PASSED -> /usr/bin/tail of the coreos release 494.5.0 Tests in machine #1 (same machine that is writing the file) all tests pass. On Mon, Jan 12, 2015 at 5:14 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote: > What versions of all the Ceph pieces are you using? (Kernel > client/ceph-fuse, MDS, etc) > > Can you provide more details on exactly what the program is doing on > which nodes? > -Greg > > On Fri, Jan 9, 2015 at 5:15 PM, Lorieri <lorieri@xxxxxxxxx> wrote: >> first 3 stat commands shows blocks and size changing, but not the times >> after a touch it changes and tail works >> >> I saw some cephfs freezes related to it, it came back after touching the files >> >> coreos2 logs # stat deis-router.log >> File: 'deis-router.log' >> Size: 148564 Blocks: 291 IO Block: 4194304 regular file >> Device: 0h/0d Inode: 1099511628780 Links: 1 >> Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) >> Access: 2015-01-10 01:13:00.100582619 +0000 >> Modify: 2015-01-10 01:13:00.100582619 +0000 >> Change: 2015-01-10 01:13:00.000000000 +0000 >> Birth: - >> coreos2 logs # stat deis-router.log >> File: 'deis-router.log' >> Size: 152633 Blocks: 299 IO Block: 4194304 regular file >> Device: 0h/0d Inode: 1099511628780 Links: 1 >> Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) >> Access: 2015-01-10 01:13:00.100582619 +0000 >> Modify: 2015-01-10 01:13:00.100582619 +0000 >> Change: 2015-01-10 01:13:00.000000000 +0000 >> Birth: - >> coreos2 logs # stat deis-router.log >> File: 'deis-router.log' >> Size: 155763 Blocks: 305 IO Block: 4194304 regular file >> Device: 0h/0d Inode: 1099511628780 Links: 1 >> Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) >> Access: 2015-01-10 01:13:00.100582619 +0000 >> Modify: 2015-01-10 01:13:00.100582619 +0000 >> Change: 2015-01-10 01:13:00.000000000 +0000 >> Birth: - >> >> coreos2 logs # touch deis-router.log >> >> coreos2 logs # stat deis-router.log >> File: 'deis-router.log' >> Size: 155763 Blocks: 305 IO Block: 4194304 regular file >> Device: 0h/0d Inode: 1099511628780 Links: 1 >> Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) >> Access: 2015-01-10 01:13:46.961858103 +0000 >> Modify: 2015-01-10 01:13:46.961858103 +0000 >> Change: 2015-01-10 01:13:46.000000000 +0000 >> Birth: - >> >> On Fri, Jan 9, 2015 at 11:11 PM, Lorieri <lorieri@xxxxxxxxx> wrote: >>> Hi, >>> >>> I have a program that tails a file and this file is create on another machine >>> >>> some tail programs does not work because the modification time is not >>> updated in the remote machines >>> >>> I've find this old thread >>> http://permalink.gmane.org/gmane.comp.file-systems.ceph.devel/11001 >>> >>> it mentions the problem and suggest ntp sync >>> >>> I tried to re-sync ntp and restart the ceph cluster, but the issue persists >>> >>> do you know if it is possible to avoid this behavior ? >>> >>> thanks >>> -lorieri >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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