Hi *, We use nfs4 in combination with dovecot. Also (hard)quotas are used on the exports. Using the dovecot quota fs plugin things did not work at all. There were a few issues we encountered: 1. Nfs4 is not recognized. The problem is that the mount type is only checked for "nfs" and not nfs4. This was an easy fix. 2. The (fs)path for nfs4 that is relayed to rquotad has to be without the leading "/". This was an easy fix, too. (borrowed from linuxquota: http://linuxquota.cvs.sourceforge.net/viewvc/linuxquota/quota-tools/rquota_c... ) 3. Maybe because we do not use softquotas the quota active boolean (rq_active) in the rquota struct is always false. So we hackishly removed this check. This problem also occured here: http://dovecot.org/pipermail/dovecot/2009-May/039593.html Apparently quota-tools do not check for this either (not needed?). 4. As metioned above we only use hardquotas but the plugin only reports softquotas. In my patch below I changed the behaviour: Check softquota == 0. If true then use hardquota, else softquota. Maybe you can use some of those fixes. I think at least #3 is reproducible (see ml post). The hard vs softquota behaviour is certainly a matter of discussion. The nfs4 "fixes" are actually more like feature requests that I think should be added to the plugin in one way or another. I created a diff of my changes to quota-fs.c. The changes were tested only for nfs3/4 though. Cheers Martin For completeness: BEGIN dovecot -n # 1.2.12: /etc/dovecot/dovecot.conf # OS: Linux 2.6.31-xen-r10-xen_domU x86_64 Gentoo Base System release 1.12.13 protocols: imaps pop3s listen: [::] ssl_listen(default): *:1993 ssl_listen(imap): *:1993 ssl_listen(pop3): *:1995 <cert files omitted> version_ignore: yes login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_max_processes_count: 256 mail_privileged_group: mail mail_debug: yes mmap_disable: yes mail_nfs_index: yes mail_executable(default): /usr/local/bin/dovecot_helper mail_executable(imap): /usr/local/bin/dovecot_helper mail_executable(pop3): /usr/local/bin/dovecot_helper_pop mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %v,%u lda: postmaster_address: <omitted> auth default: passdb: driver: pam args: * userdb: driver: passwd plugin: quota: fs:user:noenforcing -- END The diff (-Naur): --- quota-fs.c 2010-06-19 00:12:44.000000000 +0200 +++ quota-fs.c 2010-06-29 15:44:45.033517162 +0200 @@ -164,7 +164,7 @@ mount->fd = -1; #endif - if (strcmp(mount->type, "nfs") == 0) { + if (strcmp(mount->type, "nfs") == 0 || strcmp(mount->type, "nfs4") == 0) { if (strchr(mount->device_path, ':') == NULL) { i_error("quota-fs: %s is not a valid NFS device path", mount->device_path); @@ -210,7 +210,7 @@ #ifdef FS_QUOTA_SOLARIS #ifdef HAVE_RQUOTA - if (strcmp(mount->type, "nfs") == 0) { + if (strcmp(mount->type, "nfs") == 0 || strcmp(mount->type, "nfs4") == 0) { /* using rquota for this mount */ } else #endif @@ -319,6 +319,11 @@ host = t_strdup_until(mount->device_path, path); path++; + /* For NFSv4, we send the filesystem path without initial /. Server prepends proper + * NFS pseudoroot automatically and uses this for detection of NFSv4 mounts. */ + if (strcmp(root->mount->type, "nfs4") == 0) + while (*path == '/') + path++; if (root->root.quota->set->debug) { i_info("quota-fs: host=%s, path=%s, uid=%s, %s", @@ -366,17 +371,24 @@ /* convert the results from blocks to bytes */ const rquota *rq = &result.getquota_rslt_u.gqr_rquota; - if (rq->rq_active) { - if (bytes) { - *value_r = (uint64_t)rq->rq_curblocks * - (uint64_t)rq->rq_bsize; + if (bytes) { + *value_r = (uint64_t)rq->rq_curblocks * + (uint64_t)rq->rq_bsize; + if (rq->rq_bsoftlimit) { *limit_r = (uint64_t)rq->rq_bsoftlimit * (uint64_t)rq->rq_bsize; } else { - *value_r = rq->rq_curfiles; - *limit_r = rq->rq_fsoftlimit; + *limit_r = (uint64_t)rq->rq_bhardlimit * + (uint64_t)rq->rq_bsize; } + } else { + *value_r = rq->rq_curfiles; + if (rq->rq_fsoftlimit) + *limit_r = rq->rq_fsoftlimit; + else + *limit_r = rq->rq_fhardlimit; } + if (root->root.quota->set->debug) { i_info("quota-fs: uid=%s, value=%llu, " "limit=%llu, active=%d", dec2str(root->uid), @@ -419,7 +431,12 @@ host = t_strdup_until(mount->device_path, path); path++; - + /* For NFSv4, we send the filesystem path without initial /. Server prepends proper + * NFS pseudoroot automatically and uses this for detection of NFSv4 mounts. */ + if (strcmp(root->mount->type, "nfs4") == 0) + while (*path == '/') + path++; + if (root->root.quota->set->debug) { i_info("quota-fs: host=%s, path=%s, gid=%s, %s", host, path, dec2str(root->gid), @@ -761,7 +778,7 @@ bytes = strcasecmp(name, QUOTA_NAME_STORAGE_BYTES) == 0; #ifdef HAVE_RQUOTA - if (strcmp(root->mount->type, "nfs") == 0) { + if (strcmp(root->mount->type, "nfs") == 0 || strcmp(root->mount->type, "nfs4") == 0) { T_BEGIN { ret = !root->user_disabled ? do_rquota_user(root, bytes, value_r, &limit) :