Re: Cachefs fails to take effect on nfs4?
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Oh dear, I appear to have not built _DEBUG into this version of the kernel. I'll go modify this and reboot into the new kernel. - Rich On Thu, May 21, 2009 at 10:56 AM, Rince <rincebrain@xxxxxxxxx> wrote: > When I say "submounted" I mean "a subdir of /scratch which is a > different filesystem and export line on the server." > on pre-NFS4, I'd be required to have a different mount command for > each, e.g. mount /scratch/sub1;mount /scratch/sub2; [...] > on NFS4, I can just mount -t nfs4 /scratch and it does the right thing. > > Command output pending. > > - Rich > > On Thu, May 21, 2009 at 10:51 AM, David Howells <dhowells@xxxxxxxxxx> wrote: >> Rince <rincebrain@xxxxxxxxx> wrote: >> >>> I sit corrected. This only occurs for recursively submounted >>> directories, e.g. /scratch/subdir1. >> >> What do you mean by 'submounted'? Is subdir1 a different export of FSID to >> /scratch? Can you cat /proc/fs/nfsfs/volumes? It should give something like: >> >> [root@andromeda ~]# cat /proc/fs/nfsfs/* >> NV SERVER PORT DEV FSID FSC >> v4 5a9b4a12 801 0:17 7edcf8bbc93b4329 yes >> >> Also, can you do: >> >> echo 65535 >/sys/module/fscache/parameters/debug >> echo 255 >/sys/module/cachefiles/parameters/debug >> dd if=/scratch/subdir1/testfile of=/dev/null bs=4096 count=4 >> echo 0 >/sys/module/fscache/parameters/debug >> echo 0 >/sys/module/cachefiles/parameters/debug >> >> assuming you have CONFIG_FSCACHE_DEBUG=y and CONFIG_CACHEFILES_DEBUG=y and >> capture what winds up in dmesg? >> >>> mount | grep /scratch >> >> It might be better to do: >> >> cat /proc/mounts | grep /scratch >> >> Things might show up there that don't show up when you do 'mount' without >> parameters. >> >> David >> >> -- >> Linux-cachefs mailing list >> Linux-cachefs@xxxxxxxxxx >> https://www.redhat.com/mailman/listinfo/linux-cachefs >> > > > > -- > > A gentleman never strikes a lady with his hat on. -- Fred Allen > -- Greener's Law: Never argue with a man who buys ink by the barrel. -- Linux-cachefs mailing list Linux-cachefs@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cachefs
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