Hi Devid Thank you for your reply. > You really want something 2.6.32 based. I whole slew of fixes to FS-Cache and > CacheFiles went in just before Linus cut 2.6.32. I tried to upgrade with kernel 2.6.32 but it didn't work out. Server was not backed on after recompiled and rebooted. So I tried to use kernel 2.6.30.10 and it went through. Is it possible to upgrade kernel 2.6.32 on CENTOS 5.3 installed linux? I don't have confidence to do it. > cachefilesd-0.8 and below will work with the RHEL-5 FS-Cache. You need > cachefilesd-0.9 for the CacheFiles that actually got upstream, and that one i> sn't backwardly compatible. There was a massive rewrite between the RHEL-5 > FS-Cache and the upstream FS-Cache. I used cachefilesd-0.8 on kernel 2.6.18 and when I execute command, it returned error messages as below. cachefilesd[2987]: Failed to check object's in-use state: errno 95(Operation not supported) And it didn't start. > What nfs-utils are you using? Does dmesg show anything? It is nfs-utils-2.1.1 and it has "fsc" option. I tested if it works on kernel 2.6.30.10 and it was OK. But after I put kernel 2.6.18 back on system, it doesn't let me use option "fsc". (I am sorry but I could not find error messages for this.) Here is my situation. 1. kernel 2.6.32 Not succeeded recompile it. 2. kernel 2.6.30.10 Succeeded recompile it. And everything work very fine but it becames zombie under heavy traffic. (under heavy NFS files transfer.) 3. kernel 2.6.18 Cachefilesd doesn't start. NFS doesn't start with option "fsc" May be way to recompile kernel was wrong. Kernel 2.6.18 is a lot different from later than kernel 2.6.30. . To use kernel 2.6.32 and 2.6.30 is risky for me. As long as kernel 2.6.18 may be able to handle with cachefiles, I really want to try it. Unfortunately I could not succeed it on kenrnel2.6.18 yet and I need your help. This server only needs to cache files from NFS server and no WRITE. (only READ). Please instruct me how to recompile kernel 2.6.18. I hope you can help me and am so sorry to confuse you a lot. Best regards -- Linux-cachefs mailing list Linux-cachefs@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cachefs
