[Gluster-users] sticky bit?
Matthew Wilkins
daibutsu at gmail.com
Wed Apr 8 03:02:53 UTC 2009
hi there,
i am doing some testing of 2.0.0rc7 on two RHEL machines. i have a
nufa setup, my config is below.
files that i create have the sticky bit set on them, why is that? in detail:
on mu-rhdev1 i create the file /mnt/foo1 (where gluster is mounted on
/mnt), i do an ls
[root at mu-rhdev1 glusterfs]# vi /mnt/foo1
[root at mu-rhdev1 glusterfs]# ls -l /mnt/ /export/brick0/
/export/brick0/:
total 4
-rw-r--r-T 1 root root 3 Apr 8 14:55 foo1
/mnt/:
total 4
-rw-r--r-T 1 root root 3 Apr 8 14:55 foo1
and on mu-rhdev2 i see:
[root at mu-rhdev2 mnt]# ls -l /mnt/ /export/brick0/
/export/brick0/:
total 4
---------T 1 root root 0 Apr 8 14:55 foo1
/mnt/:
total 4
-rw-r--r-T 1 root root 3 Apr 8 14:55 foo1
so what are those sticky bits doing there? also why is foo1 showing
up in mu-rhdev2:/export/brick0? is this a namespace?
now i create a file on mu-rhdev2:
[root at mu-rhdev2 mnt]# vi /mnt/foo2
[root at mu-rhdev2 mnt]# ls -l /mnt/ /export/brick0/
/export/brick0/:
total 8
---------T 1 root root 0 Apr 8 14:55 foo1
-rw-r--r-- 1 root root 5 Apr 8 14:55 foo2
/mnt/:
total 8
-rw-r--r-T 1 root root 3 Apr 8 14:55 foo1
-rw-r--r-- 1 root root 5 Apr 8 14:55 foo2
no sticky bits on foo2! and on mu-rhdev1 it looks like:
root at mu-rhdev1 glusterfs]# ls -l /mnt/ /export/brick0/
/export/brick0/:
total 4
-rw-r--r-T 1 root root 3 Apr 8 14:55 foo1
/mnt/:
total 8
-rw-r--r-T 1 root root 3 Apr 8 14:55 foo1
-rw-r--r-- 1 root root 5 Apr 8 14:55 foo2
foo2 doesn't show up as zero size in /export/brick0, perhaps it will
over time or if i stat it from mu-rhdev1?
thanks for any help in clarifying what is happening here. here is my config:
volume posix
type storage/posix
option directory /export/brick0
end-volume
volume locks
type features/locks
subvolumes posix
end-volume
volume brick
type performance/io-threads
subvolumes locks
end-volume
volume server
type protocol/server
option transport-type tcp
option auth.addr.brick.allow *
subvolumes brick
end-volume
volume mu-rhdev1
type protocol/client
option transport-type tcp
option remote-host mu-rhdev1
option remote-subvolume brick
end-volume
volume mu-rhdev2
type protocol/client
option transport-type tcp
option remote-host mu-rhdev2
option remote-subvolume brick
end-volume
volume nufa
type cluster/nufa
option local-volume-name `hostname`
subvolumes mu-rhdev1 mu-rhdev2
end-volume
volume writebehind
type performance/write-behind
option cache-size 1MB
subvolumes nufa
end-volume
# before or after writebehind?
volume ra
type performance/read-ahead
subvolumes writebehind
end-volume
volume cache
type performance/io-cache
option cache-size 512MB
subvolumes ra
end-volume
matt
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