Local ZFS file system incorrectly identified as remote

snidely_whiplash

I'm seeing this message.  I'm persisting to a local ZFS file system.

2018-10-10 06:27:05.094/8.410 Oracle Coherence GE 12.2.1.3.0 <Info> (thread=DistributedCache:DistributedPositionsCacheService, member=1): "/opt/coherence/store/active/oms_test/DistributedPositionsCacheService" appears to reference a remote file-system and as such Coherence persistence is enabling "coherence.distributed.persistence.bdb.je.log.useODSYNC" in order ensure the integrity of remote commits. As this may impact write performance you may explicitly set the system property to "false" to override this decision; though this is only recommended if the location is actually a local file-system.

Should I just set it to false?

Ryan Lubke-Oracle

Looks like the file system detection could use some improvement.  It appears that ZFS doesn't modify /proc/mounts as the current logic expects. 

Could you submit an RFE?

Ryan Lubke-Oracle

Could you please confirm your OS?  If it's a variant of Linux, can you confirm the presence of either /etc/fstab or /proc/mount.  If they exist, can you share the contents?

Since the fs is local, you can set that flag to false.

snidely_whiplash

CentOS-7

Linux herc 3.10.0-862.11.6.el7.x86_64 #1 SMP Tue Aug 14 21:49:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

$ cat fstab

#

# /etc/fstab

# Created by anaconda on Tue Jan 13 01:38:12 2015

#

# Accessible filesystems, by reference, are maintained under '/dev/disk'

# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

#

/dev/mapper/centos00-root /                       xfs     defaults        1 1

UUID=ca39a66a-64a4-4877-aaef-8d5b499c8600 /boot                   xfs     defaults        1 2

/dev/mapper/centos00-home /home                   xfs     defaults        1 2

/dev/mapper/centos00-swap swap                    swap    defaults        0 0

$ cat /proc/mounts

rootfs / rootfs rw 0 0

sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0

proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0

devtmpfs /dev devtmpfs rw,nosuid,size=63812484k,nr_inodes=15953121,mode=755 0 0

securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0

tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0

devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0

tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0

tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0

cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 0 0

pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0

cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_prio,net_cls 0 0

cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0

cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0

cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0

cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0

cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0

cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0

cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0

cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0

cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpuacct,cpu 0 0

configfs /sys/kernel/config configfs rw,relatime 0 0

/dev/mapper/centos00-root / xfs rw,relatime,attr2,inode64,noquota 0 0

mqueue /dev/mqueue mqueue rw,relatime 0 0

hugetlbfs /dev/hugepages hugetlbfs rw,relatime 0 0

debugfs /sys/kernel/debug debugfs rw,relatime 0 0

nfsd /proc/fs/nfsd nfsd rw,relatime 0 0

tmpfs /tmp tmpfs rw 0 0

/dev/mapper/centos00-home /home xfs rw,relatime,attr2,inode64,noquota 0 0

/dev/sda1 /boot xfs rw,relatime,attr2,inode64,noquota 0 0

sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0

tmpfs /run/user/42 tmpfs rw,nosuid,nodev,relatime,size=12772548k,mode=700,uid=42,gid=42 0 0

tmpfs /run/user/1000 tmpfs rw,nosuid,nodev,relatime,size=12772548k,mode=700,uid=1000,gid=1000 0 0

tubby /tubby zfs rw,xattr,noacl 0 0

tubby/admin /tubby/admin zfs rw,xattr,noacl 0 0

tubby/apps /tubby/apps zfs rw,xattr,noacl 0 0

tubby/images /tubby/images zfs rw,xattr,noacl 0 0

tubby/mkt /tubby/mkt zfs rw,xattr,noacl 0 0

tubby/users /tubby/users zfs rw,xattr,noacl 0 0

gvfsd-fuse /run/user/1000/gvfs fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0

fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0

tmpfs /run/user/1005 tmpfs rw,nosuid,nodev,relatime,size=12772548k,mode=700,uid=1005,gid=1006 0 0

gvfsd-fuse /run/user/1005/gvfs fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1005,group_id=1006 0 0

tmpfs /run/user/1007 tmpfs rw,nosuid,nodev,relatime,size=12772548k,mode=700,uid=1007,gid=1009 0 0

gvfsd-fuse /run/user/1007/gvfs fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1007,group_id=1009 0 0

systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=27,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=51754688 0 0

binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0

tmpfs /run/user/1008 tmpfs rw,nosuid,nodev,relatime,size=12772548k,mode=700,uid=1008,gid=1010 0 0

Ryan Lubke-Oracle

Looks like the file system detection could use some improvement.  It appears that ZFS doesn't modify /proc/mounts as the current logic expects. 

Could you submit an RFE?

snidely_whiplash

I don't know if I am able to submit RFEs but feel free to pass along that content to anyone who might make use of it. 

Thanks!

Tmiddlet-Oracle

Have created the following Enhancement Request.

Enh 28778014 - Local ZFS file system incorrectly identified as remote 

Thanks