January 2014 - HPDD-discuss

by luka leskovec

Hello all, i got a running lustre 2.5.0 + zfs setup on top of centos 6.4 (the kernels available on the public whamcloud site), my clients are on centos 6.5 (minor version difference, i recompiled the client sources with the options specified on the whamcloud site) but now i have some problems. I cannot judge how serious it is, as the only problems i observe are slow responses on ls, rm and tar and apart from that it works great. i also export it over nfs, which sometimes hangs the client on which it is exported, but i expect this is an issue related to how many service threads i have running on my servers (old machines). but my osses (i got two) keep spitting out these messages into the system log: xxxxxxxxxxxxxxxxxxxxxx kernel: SPL: Showing stack for process 3264 xxxxxxxxxxxxxxxxxxxxxx kernel: Pid: 3264, comm: txg_sync Tainted: P --------------- 2.6.32-358.18.1.el6_lustre.x86_64 #1 xxxxxxxxxxxxxxxxxxxxxx kernel: Call Trace: xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa01595a7>] ? spl_debug_dumpstack+0x27/0x40 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0161337>] ? kmem_alloc_debug+0x437/0x4c0 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0163b13>] ? task_alloc+0x1d3/0x380 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0160f8f>] ? kmem_alloc_debug+0x8f/0x4c0 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa02926f0>] ? spa_deadman+0x0/0x120 [zfs] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa016432b>] ? taskq_dispatch_delay+0x19b/0x2a0 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0164612>] ? taskq_cancel_id+0x102/0x1e0 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa028259a>] ? spa_sync+0x1fa/0xa80 [zfs] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffff810a2431>] ? ktime_get_ts+0xb1/0xf0 xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0295707>] ? txg_sync_thread+0x307/0x590 [zfs] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffff810560a9>] ? set_user_nice+0xc9/0x130 xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0295400>] ? txg_sync_thread+0x0/0x590 [zfs] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0162478>] ? thread_generic_wrapper+0x68/0x80 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffffa0162410>] ? thread_generic_wrapper+0x0/0x80 [spl] xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffff81096a36>] ? kthread+0x96/0xa0 xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffff8100c0ca>] ? child_rip+0xa/0x20 xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffff810969a0>] ? kthread+0x0/0xa0 xxxxxxxxxxxxxxxxxxxxxx kernel: [<ffffffff8100c0c0>] ? child_rip+0x0/0x20 does anyone know, is this a serious problem, or just aesthetics? any way to solve this? any hints? best regards, Luka Leskovec

7 years, 8 months

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Lester, the Lustre lister

by David Dillow

I'd like to announce the availability of Lester, the Lustre lister. It is available from github at https://github.com/ORNL-TechInt/lester Lester is an extension of (n)e2scan for generating lists of files (and potentially their attributes) from a ext2/ext3/ext4/ldiskfs filesystem. We primarily use it for generating a purge candidate list, but it is also useful for generating a list of files affected by an OST outage or providing a name for an inode. For example, to list files that have not been accessed in two weeks and put the output in ne2scan format in $OUTFILE: touch -d 'now - 2 weeks' /tmp/flag lester -A fslist -a before=/tmp/flag -o $OUTFILE $BLOCKDEV To do the same thing, but generate a full listing of the filesystem in parallel: touch -d 'now - 2 weeks' /tmp/flag lester -A fslist -a before=/tmp/flag -a genhit=$UNACCESSED_LIST \ -o $FULL_LIST $BLOCKDEV To name inodes to stdout (when not using Lustre 2.4's LINKEA): lester -A namei -a $INODE1 -a $INODE2 ... $BLOCKDEV To get a list of files with objects on OSTs 999 and 1000: lester -A lsost -a 999 -a 1000 -o $OUTFILE $BLOCKDEV To get a list of options and actions, use 'lester -h'; to get a list of options for a given action, use 'lester -A $ACTION -a help'. Lester uses its own AIO-based IO engine by default, which is usually much faster than the default Unix engine for large filesystems on high-performance devices. The number of requests in flight, request size, cache size, and read-ahead settings for various phases of the scan are all configurable. I recommend experimenting with the settings to find a balance between speed and resource usage for your situation. More information about the gains we've seen in testing prototype version of Lester are in my LUG 2011 presentation, http://www.opensfs.org/wp-content/uploads/2012/12/500-530_David_Dillow_LU... -- Dave Dillow National Center for Computational Science Oak Ridge National Laboratory

7 years, 11 months

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The e2fsprogs git tree tagging is out of date

by Jay Lan

Hi, Your web site showed the latest el6/RPMS/x86_64 e2fsprogs version is 1.42.7-wc2-7. However, the latest tag in the git repo seemed to me is v1.42.7.wc1. Which commit is 1.42.7-wc2-7 tagged to ? Thanks, Jay

7 years, 11 months

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Problems with HSM

by Valvanuz Fernandez

Hello: I've installed the Lustre Feature Release (2.5) from whamcloud website in my Centos 6 servers and followed the documentation to configure the HSM. It seems that the coodinator and the agent are running properly, but when I try to archive a file from a lustre client it fails. As I was not sure if there was a problem with the agent, I've instantiated 2 agents in 2 different machines (one in the MDS, that also acts as lustre client). The backend of the first agent is a NFS filesystem and the backend of the sencond is XFS. The error I get when I try to archive a file from any of my clients is the following: [root@wn021 ~]# lfs hsm_archive /lustre/collectl.conf Cannot send HSM request (use of /lustre/collectl.conf): Invalid argument Below, I've attached the output of the commands I've used to test that the configuration and the strace output of the of the "lfs hsm_archive". Could somebody help me? Thanks in advanced Valvanuz [root@wn024 ~]# lctl get_param mdt.lustrefs-MDT0000.hsm_control mdt.lustrefs-MDT0000.hsm_control=enabled [root@wn024 ~]# lctl get_param -n mdt.lustrefs-MDT0000.hsm.agents uuid=62a6a7ae-1c24-1380-e960-443ee68c4e80 archive_id=1 requests=[current:0 ok:0 errors:0] uuid=5f5d5627-7fa6-1de0-6823-7d80db8d482d archive_id=2 requests=[current:0 ok:0 errors:0] [root@wn031 ~]# ps -ef|grep hsm root 20437 1 0 Jan22 ? 00:00:00 lhsmtool_posix --daemon --hsm-root /localtmp/lustrehsm --archive=2 /lustre [root@wn024 ~]# ps -ef|grep hsm root 11750 1 0 Jan22 ? 00:00:00 lhsmtool_posix --daemon --hsm-root /oceano/gmeteo/WORK/valva/lustre --archive=1 /lustre [root@wn021 ~]# lfs hsm_archive /lustre/collectl.conf Cannot send HSM request (use of /lustre/collectl.conf): Invalid argument [root@wn021 ~]# lfs hsm_state /lustre/collectl.conf /lustre/collectl.conf: (0x00000000) [root@wn021 ~]# strace lfs hsm_archive /lustre/collectl.conf execve("/usr/bin/lfs", ["lfs", "hsm_archive", "/lustre/collectl.conf"], [/* 69 vars */]) = 0 brk(0) = 0xa43000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258d9000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=54707, ...}) = 0 mmap(NULL, 54707, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f90258cb000 close(3) = 0 open("/lib64/libpthread.so.0", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\\\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=142464, ...}) = 0 mmap(NULL, 2212768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f902549e000 mprotect(0x7f90254b5000, 2097152, PROT_NONE) = 0 mmap(0x7f90256b5000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f90256b5000 mmap(0x7f90256b7000, 13216, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f90256b7000 close(3) = 0 open("/lib64/libreadline.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0PE\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=269592, ...}) = 0 mmap(NULL, 2370056, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f902525b000 mprotect(0x7f9025295000, 2097152, PROT_NONE) = 0 mmap(0x7f9025495000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3a000) = 0x7f9025495000 mmap(0x7f902549d000, 2568, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f902549d000 close(3) = 0 open("/lib64/libncurses.so.5", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000j\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=140096, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258ca000 mmap(NULL, 2235624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9025039000 mprotect(0x7f902505b000, 2093056, PROT_NONE) = 0 mmap(0x7f902525a000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x21000) = 0x7f902525a000 close(3) = 0 open("/lib64/libkeyutils.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\v\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=10192, ...}) = 0 mmap(NULL, 2105424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9024e36000 mprotect(0x7f9024e38000, 2093056, PROT_NONE) = 0 mmap(0x7f9025037000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7f9025037000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\355\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1916568, ...}) = 0 mmap(NULL, 3745960, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9024aa3000 mprotect(0x7f9024c2d000, 2093056, PROT_NONE) = 0 mmap(0x7f9024e2c000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x189000) = 0x7f9024e2c000 mmap(0x7f9024e31000, 18600, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f9024e31000 close(3) = 0 open("/lib64/libtinfo.so.5", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@\310\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=135896, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c9000 mmap(NULL, 2232320, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9024882000 mprotect(0x7f902489f000, 2097152, PROT_NONE) = 0 mmap(0x7f9024a9f000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1d000) = 0x7f9024a9f000 close(3) = 0 open("/lib64/libdl.so.2", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\r\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=19536, ...}) = 0 mmap(NULL, 2109696, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f902467e000 mprotect(0x7f9024680000, 2097152, PROT_NONE) = 0 mmap(0x7f9024880000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f9024880000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c8000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c7000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c6000 arch_prctl(ARCH_SET_FS, 0x7f90258c7700) = 0 mprotect(0x7f9024880000, 4096, PROT_READ) = 0 mprotect(0x7f9024e2c000, 16384, PROT_READ) = 0 mprotect(0x7f9025037000, 4096, PROT_READ) = 0 mprotect(0x7f90256b5000, 4096, PROT_READ) = 0 mprotect(0x7f90258da000, 4096, PROT_READ) = 0 munmap(0x7f90258cb000, 54707) = 0 set_tid_address(0x7f90258c79d0) = 15850 set_robust_list(0x7f90258c79e0, 0x18) = 0 futex(0x7fffd860f6bc, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7fffd860f6bc, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 7f90258c7700) = -1 EAGAIN (Resource temporarily unavailable) rt_sigaction(SIGRTMIN, {0x7f90254a3ae0, [], SA_RESTORER|SA_SIGINFO, 0x7f90254ad500}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {0x7f90254a3b70, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f90254ad500}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 getrlimit(RLIMIT_STACK, {rlim_cur=10240*1024, rlim_max=RLIM_INFINITY}) = 0 shmget(IPC_PRIVATE, 65680, 0600) = 65536 shmat(65536, 0, 0) = ? shmctl(65536, IPC_RMID, 0) = 0 brk(0) = 0xa43000 brk(0xa64000) = 0xa64000 lstat("/lustre/collectl.conf", {st_mode=S_IFREG|0644, st_size=7361, ...}) = 0 open("/lustre/collectl.conf", O_RDONLY|O_NONBLOCK|O_NOFOLLOW) = 3 ioctl(3, 0x800866ad, 0xa43048) = 0 close(3) = 0 lstat("/lustre", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0 lstat("/lustre/collectl.conf", {st_mode=S_IFREG|0644, st_size=7361, ...}) = 0 open("/etc/mtab", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=344, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258d8000 read(3, "/dev/md0 / ext4 rw 0 0\nproc /pro"..., 4096) = 344 read(3, "", 4096) = 0 close(3) = 0 munmap(0x7f90258d8000, 4096) = 0 open("/lustre", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 3 ioctl(3, 0x401866d9, 0xa43030) = -1 EI[root@wn021 ~]# strace lfs hsm_archive /lustre/collectl.conf execve("/usr/bin/lfs", ["lfs", "hsm_archive", "/lustre/collectl.conf"], [/* 69 vars */]) = 0 brk(0) = 0xa43000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258d9000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=54707, ...}) = 0 mmap(NULL, 54707, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f90258cb000 close(3) = 0 open("/lib64/libpthread.so.0", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\\\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=142464, ...}) = 0 mmap(NULL, 2212768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f902549e000 mprotect(0x7f90254b5000, 2097152, PROT_NONE) = 0 mmap(0x7f90256b5000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f90256b5000 mmap(0x7f90256b7000, 13216, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f90256b7000 close(3) = 0 open("/lib64/libreadline.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0PE\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=269592, ...}) = 0 mmap(NULL, 2370056, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f902525b000 mprotect(0x7f9025295000, 2097152, PROT_NONE) = 0 mmap(0x7f9025495000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3a000) = 0x7f9025495000 mmap(0x7f902549d000, 2568, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f902549d000 close(3) = 0 open("/lib64/libncurses.so.5", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000j\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=140096, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258ca000 mmap(NULL, 2235624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9025039000 mprotect(0x7f902505b000, 2093056, PROT_NONE) = 0 mmap(0x7f902525a000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x21000) = 0x7f902525a000 close(3) = 0 open("/lib64/libkeyutils.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\v\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=10192, ...}) = 0 mmap(NULL, 2105424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9024e36000 mprotect(0x7f9024e38000, 2093056, PROT_NONE) = 0 mmap(0x7f9025037000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7f9025037000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\355\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1916568, ...}) = 0 mmap(NULL, 3745960, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9024aa3000 mprotect(0x7f9024c2d000, 2093056, PROT_NONE) = 0 mmap(0x7f9024e2c000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x189000) = 0x7f9024e2c000 mmap(0x7f9024e31000, 18600, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f9024e31000 close(3) = 0 open("/lib64/libtinfo.so.5", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@\310\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=135896, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c9000 mmap(NULL, 2232320, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f9024882000 mprotect(0x7f902489f000, 2097152, PROT_NONE) = 0 mmap(0x7f9024a9f000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1d000) = 0x7f9024a9f000 close(3) = 0 open("/lib64/libdl.so.2", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\r\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=19536, ...}) = 0 mmap(NULL, 2109696, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f902467e000 mprotect(0x7f9024680000, 2097152, PROT_NONE) = 0 mmap(0x7f9024880000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f9024880000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c8000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c7000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258c6000 arch_prctl(ARCH_SET_FS, 0x7f90258c7700) = 0 mprotect(0x7f9024880000, 4096, PROT_READ) = 0 mprotect(0x7f9024e2c000, 16384, PROT_READ) = 0 mprotect(0x7f9025037000, 4096, PROT_READ) = 0 mprotect(0x7f90256b5000, 4096, PROT_READ) = 0 mprotect(0x7f90258da000, 4096, PROT_READ) = 0 munmap(0x7f90258cb000, 54707) = 0 set_tid_address(0x7f90258c79d0) = 15850 set_robust_list(0x7f90258c79e0, 0x18) = 0 futex(0x7fffd860f6bc, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7fffd860f6bc, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 7f90258c7700) = -1 EAGAIN (Resource temporarily unavailable) rt_sigaction(SIGRTMIN, {0x7f90254a3ae0, [], SA_RESTORER|SA_SIGINFO, 0x7f90254ad500}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {0x7f90254a3b70, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f90254ad500}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 getrlimit(RLIMIT_STACK, {rlim_cur=10240*1024, rlim_max=RLIM_INFINITY}) = 0 shmget(IPC_PRIVATE, 65680, 0600) = 65536 shmat(65536, 0, 0) = ? shmctl(65536, IPC_RMID, 0) = 0 brk(0) = 0xa43000 brk(0xa64000) = 0xa64000 lstat("/lustre/collectl.conf", {st_mode=S_IFREG|0644, st_size=7361, ...}) = 0 open("/lustre/collectl.conf", O_RDONLY|O_NONBLOCK|O_NOFOLLOW) = 3 ioctl(3, 0x800866ad, 0xa43048) = 0 close(3) = 0 lstat("/lustre", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0 lstat("/lustre/collectl.conf", {st_mode=S_IFREG|0644, st_size=7361, ...}) = 0 open("/etc/mtab", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=344, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f90258d8000 read(3, "/dev/md0 / ext4 rw 0 0\nproc /pro"..., 4096) = 344 read(3, "", 4096) = 0 close(3) = 0 munmap(0x7f90258d8000, 4096) = 0 open("/lustre", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 3 ioctl(3, 0x401866d9, 0xa43030) = -1 EINVAL (Invalid argument) close(3) = 0 write(2, "Cannot send HSM request (use of "..., 73Cannot send HSM request (use of /lustre/collectl.conf): Invalid argument ) = 73 rt_sigaction(SIGINT, {0x40b230, [RT_1 RT_2 RT_3 RT_4 RT_5 RT_6 RT_7 RT_8 RT_9 RT_10 RT_11 RT_12 RT_13 RT_14 RT_15], SA_RESTORER|SA_RESTART, 0x7f90254ad500}, NULL, 8) = 0 exit_group(22) = ? NVAL (Invalid argument) close(3) = 0 write(2, "Cannot send HSM request (use of "..., 73Cannot send HSM request (use of /lustre/collectl.conf): Invalid argument ) = 73 rt_sigaction(SIGINT, {0x40b230, [RT_1 RT_2 RT_3 RT_4 RT_5 RT_6 RT_7 RT_8 RT_9 RT_10 RT_11 RT_12 RT_13 RT_14 RT_15], SA_RESTORER|SA_RESTART, 0x7f90254ad500}, NULL, 8) = 0 exit_group(22) = ?

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Debugging LNet RPC Errors

by Tobias Groschup

Hello, I am still struggling with the GET message on the LND level. After adding a test to the lnet selftest, there is one GET going through the LND, and after that nothing happens some time, untill this error message is dumped to the console: add test RPC failed on 12345-1@ex: Unknown error 18446744073709551506 Is there any way to find out what caused this error? That would be a great help in finding what the LND does wrong. I consulted the different log files like /var/log/dmesg and /var/log/messages. On my system, there is no file log-lustre under /tmp. So, I do not know how to investigate this error further. Any help on this matter would be very much appreciated! Thanks and kind regards Tobias Groschup

7 years, 11 months

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Any issues in leaving deleted OST's as is, without writeconf

by Kumar, Amit

Dear All, Based on my reading: shutting down the file system including un-mounting clients, MDT/MGS, and OST and then performing a writeconf would clear this permanently removed OST. Question: I believe and also do not see any issue in continuing to run the file system without having to shut down until the next scheduled maintenance, to run writeconf and hence to clear deleted OST's from being listed on MDS. Do I get this right? Please advise. Thank you, Amit H. Kumar

7 years, 11 months

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Lustre 2.6 update - January 31st 2014

by Jones, Peter A

Hi there Here is an update on the Lustre 2.6 release. Landings ======== -A number of landings made http://git.whamcloud.com/?p=fs/lustre-release.git;a=shortlog;h=refs/heads... Testing ======= -Testing is underway on the 2.5.54 tag is ongoing Blockers ======== -https://jira.hpdd.intel.com/issues/?filter=10944<https://jira.hpdd.intel.com/issues/?jql=project%20%3D%20LU%20AND%20fixVer...> -If there are any issues not presently marked as blockers that you believe should be, please let me know Other ===== -In light of discussions on the CDWG on this topic, we have pushed the feature freeze back to February 28th. It is anticipated that this will result in the GA being pushed back to May 31st. The expectation is that this will result in 2-3 features being included for this release. Thanks Peter PS/ You can also keep up to date with matters relating to the 2.6 release on the CDWG wiki - http://wiki.opensfs.org/Lustre_2.6.0

7 years, 11 months

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Cannot turn on quotas on 2.1.6 -> 2.4.2 upgrade: not setup yet

by Anthony Alba

Hi list, I upgraded from 2.1.6 to 2.4.2 all servers using the docs. This is a combined MGS/MDS. On MGS/MDS: tunefs.lustre --mdt --quota on MDT On OSSs: tunefs.lustre --ost --quota on OSTs On MGS/MDS: lctl conf_param lustre.quota.mdt=ug lctl conf_param lustre.quota.os=ug After remounting everything I'm getting: [root@mds1 ~]# lctl get_param osd-*.*.quota_slave.info osd-ldiskfs.lustre-MDT0000.quota_slave.info= target name: lustre-MDT0000 pool ID: 0 type: md quota enabled: ug conn to master: not setup yet space acct: ug user uptodate: glb[0],slv[0],reint[1] group uptodate: glb[0],slv[0],reint[1] Any suggestions on getting 'conn to master' change to 'setup'? The filesystem itself behaves normally. I tried it in a VM on a fresh test fs with just MGS/MDS and the conn to master was immediately "setup" even before adding any OSSes. - Anthony

7 years, 11 months

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DKMS Debian

by Arden Wiebe

Is it possible to have a Lustre client working on this kernel with DKMS or otherwise: root@steamos:/home/desktop/git/lustre-release# uname -a Linux steamos 3.10-3-amd64 #1 SMP Debian 3.10.11-1st1 (2014-01-21) x86_64 GNU/Linux

7 years, 11 months

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LUG 2014: Presentation Submission Deadline is January 31

by OpenSFS Administration

<http://www.opensfs.org/events/lug14/> Call for Presentations: Lustre User Group 2014 Miami Marriott Biscayne Bay, April 8-10 Are you interested in presenting your company's best practices, case studies, or business experiences to over 200+ Lustre-focused attendees? Would you like to share specific Lustre development challenges, new development features, project updates, or cutting-edge implementations? Then we want to hear from you! Don't miss your chance to submit a presentation for the 12th annual LustreR User Group (LUG) conference on April 8-10 at the <http://www.marriott.com/hotels/travel/miabb-miami-marriott-biscayne-bay/> Miami Marriott Biscayne Bay in Miami, Florida! All LUG presentations will be 30 minutes, with a total of 25 speaking opportunities available. We encourage you to review the agendas and caliber of presentations at <http://www.opensfs.org/past-events/> past LUG events. Submission deadline is January 31! To submit an abstract: * Visit the <https://www.easychair.org/conferences/?conf=lug2014> LUG 2014 Call for Presentations Submission website * You will need to create a user account on Easy Chair (our online submission platform) if you don't already have one * After providing your user details via Easy Chair, you will be prompted to complete the online submission process * An abstract is only required for the submission process; presentation materials will be requested once abstracts are reviewed and selected <http://www.opensfs.org/events/lug14/> LUG 2014 will also feature panel discussions where leading developers, vendors, and users of Lustre debate future requirements, explore upcoming enhancements, and share real world best practices. If you'd like to suggest a topic for a panel discussion - or be part of a panel, please contact <mailto:panelist@opensfs.org> admin(a)opensfs.org. Registration will open in February and additional event logistics are included on the LUG <http://www.opensfs.org/events/lug14/> event page. Be sure to check back regularly, as speakers and session highlights will also be posted over the coming weeks. Please contact <mailto:admin@opensfs.org> admin(a)opensfs.org if you have any questions. Best regards, OpenSFS LUG Planning Committee _________________________ OpenSFS Administration 3855 SW 153rd Drive Beaverton, OR 97006 USA Phone: +1 503-619-0561 | Fax: +1 503-644-6708 Twitter: <https://twitter.com/opensfs> @OpenSFS Email: <mailto:admin@opensfs.org> admin(a)opensfs.org | Website: <http://www.opensfs.org> www.opensfs.org <http://www.opensfs.org/lug-2014-sponsorship/> <http://www.opensfs.org/lug-2014-sponsorship/> Click here to learn how to become a 2014 LUG Sponsor Open Scalable File Systems, Inc. was founded in 2010 to advance Lustre development, ensuring it remains vendor-neutral, open, and free. Since its inception, OpenSFS has been responsible for advancing the Lustre file system and delivering new releases on behalf of the open source community. Through working groups, events, and ongoing funding initiatives, OpenSFS harnesses the power of collaborative development to fuel innovation and growth of the Lustre file system worldwide.

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HPDD-discuss January 2014