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bio website github.com/kofemann
location Hamburg
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visits member for 2 years, 3 months
seen Oct 22 at 13:23

Code for coffee


Dec
9
reviewed No Action Needed Do I need a local server to serve a website in Australia considering its cost?
Dec
9
reviewed No Action Needed What is /etc/apache2/sites-available used for and is it necessary?
Dec
9
reviewed No Action Needed Missing modules in Apache 2.2
Dec
9
awarded  Custodian
Dec
8
comment RPC program gets de-registered
the tcp net address is something like a.b.c.d.N.M, where a.b.c.d it the ip address, to which service is bound, and N.M in the port number as (N << 8) + M. In your case it ports 20649 and 20393. My question is why your program get's different program numbers after restart?
Dec
6
revised Mount export of an nfs share
deleted 5 characters in body
Dec
6
answered Mount export of an nfs share
Dec
4
comment Distributed file system with local disk cache
looks like ceph gets cachefs support redhat.com/archives/linux-cachefs/2013-September/msg00022.html
Dec
4
comment File modifications lagging behind
try with mount options acdirmin= and acdirmax= to control times client caches directory attributes.
Nov
21
comment Read only NFS mount with local writes allowed
I will post this as an answer.
Nov
21
answered Read only NFS mount with local writes allowed
Nov
21
comment Read only NFS mount with local writes allowed
I think you need overlayfs, where lover fs your nfs server, and upper fs some local directory. git.kernel.org/cgit/linux/kernel/git/mszeredi/vfs.git/tree/…
Nov
21
comment Read only NFS mount with local writes allowed
do you want client to wire, but writes must not be sent to the server?
Nov
18
answered web sites know the “real” access user(IP) through a proxy?
Nov
12
comment CentOS - Increasing Users Download & Upload Speeds
Did you checkout your IO subsystem? Use tuned-adm (yum install tuned) to tweak your kernel - 'tuned-adm profile throughput-performance'
Nov
3
comment How can I deal with a directory on an ext4 volume that has so many files ls won't work?
Try with find . -exec ....
Oct
30
comment NFS client mounts pointing to the same host directory
nfsv4 builds a pseudofs. as your case you actually mount /mona. remove it from export file and re-mount.
Oct
30
comment Restart an in-use NFS server without interruption (within timeout)
if you mount with option 'hard' , which is default, then your clients will block as long as nfs server not available. The automount timeout is option tells you how long is the idle time until nfs server unmounted.
Oct
25
comment How Do I enable Safe Asynchronous Write With NFS?
It's other way around - NFS does what you ask for, and some times even does better. There is no difference in using nfs or local local disk. Unless you did not call fsync, there is no guarantee that data is written on disk. If your application requires this, db for example, then each fsync should trigger COMMIT. I am sure, every one expects from NFS server to write data to disk if it was asked to do so. What you can do, is to tell nfs server not to sync data to disk as long as client did not requested it. And this is by having async option in export.
Oct
24
comment How Do I enable Safe Asynchronous Write With NFS?
probably, by calling sync afterword. The VM flushes pages periodically.