Hello,
I am writing to report an issue on a nfs mount that disappears due to an inode revalide failure (already sent in January but probably banned with html format...). This very old commit (https://github.com/torvalds/linux/commit/cc89684c9a265828ce061037f1f79f4a68c...) exactly show the problem I have and this old resolved issue (https://bugzilla.kernel.org/show_bug.cgi?id=117651) is probably failing again today
To sum up, I have a NFS mount inside another NFS mount (for example: /opt/nfs/mount1 & /opt/nfs/mount1/mount2). If I kill a task trying to get a file descriptor on /opt/nfs/mount1/mount2 then it will be unmounted. My simple test code to reproduce very easily:
int main(int argc, char *argv[]) { while (1) { close(open(argv[1], O_RDONLY)); } }
In logs, I have: "nfs_revalidate_inode: (0:62/845965) getattr failed, error=-512"
Tested on 5.19 and 6.1 kernel
Best regards, Sylvain Menu