Recent changes to feature-requests

#21 zfs

Jan Kara — Thu, 11 Dec 2025 18:50:28 -0000

The best approach for ZFS is to use libzfs. Of course it's only present on systems that have ZFS.

Code looks like

    zh = zfs_open(libh, filesys, ZFS_TYPE_FILESYSTEM);
    if (!zh) {
      fprintf(stderr, "can't open file systen %s\n", filesys);
      return 0;
    }

    // get the actual quotas

    if (type == USRQUOTA) {
      currspace = getquota("userused", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
      if (!failed)
        currfiles = getquota("userobjused", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
      if (!failed)
        quotaspace= getquota("userquota", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
      if (!failed)
        quotafiles= getquota("userobjquota", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
    } else {
      currspace = getquota("groupused", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
      if (!failed)
        currfiles = getquota("groupobjused", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
      if (!failed)
        quotaspace= getquota("groupquota", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
      if (!failed)
        quotafiles= getquota("groupobjquota", propbuf, sizeof(propbuf)-1, name, libh, zh, &failed);
    }

    zfs_close(zh);
    libzfs_fini(libh);

getquota is

unsigned long
getquota(char quota, char propbuf, int propbuflen, char user, libzfs_handle_t libh, zfs_handle_t zh, int failed) {
char *attr = NULL;
unsigned long ret;

asprintf(&attr, "%s@%s", quota, user);
if (!attr) {
*failed = 1;
return 0L;
}

strcpy(propbuf, "0"); // in case no quota for this user
if (zfs_prop_get_userquota(zh, attr, propbuf, propbuflen-1, 1) == 0)
ret = atol(propbuf);
else
ret = 0L;

free(attr);
return ret;
}

#20 bcachefs support

Jan Kara — Wed, 02 Jul 2025 13:03:26 -0000

status: open --> closed

#20 bcachefs support

Jan Kara — Wed, 02 Jul 2025 13:02:37 -0000

#20 bcachefs support

Jan Kara — Tue, 01 Jul 2025 13:48:36 -0000

status: closed --> open

#21 zfs

Jan Kara — Tue, 01 Jul 2025 13:34:34 -0000

I guess it depends how much special ZFS is. If it just means hooking up another syscall for ZFS filesystem I guess that would be OK.

#20 bcachefs support

Jan Kara — Sun, 11 May 2025 19:36:32 -0000

# repquota -Pa
*** Report for project quotas on device /dev/sdb:/dev/sdc
Block grace time: 7days; Inode grace time: 7days
                        Block limits                File limits
Project         used    soft    hard  grace    used  soft  hard  grace
----------------------------------------------------------------------
#0        -- 42113329       0       0        1060684     0     0
#42       --       0       0       0              1     0     0


# quotaon -Pv -F vfsv1 /
quotaon: cannot find . on /dev/sdb:/dev/sdc [/]

 # quotaon -V
Quota utilities version 4.10.
Compiled with: USE_LDAP_MAIL_LOOKUP EXT2_DIRECT
Bugs to jack@suse.cz

#20 bcachefs support

Jan Kara — Sun, 11 May 2025 19:26:49 -0000

# quotaon -P /
quotaon: Cannot stat() mounted device /dev/sdc:/dev/sda:/dev/sdb: No such file or directory
quotaon: Mountpoint (or device) / not found or has no quota enabled.
# quota -V
Quota utilities version 4.09.
Compiled with: EXT2_DIRECT BSD_BEHAVIOUR
Bugs to jack@suse.cz

#21 zfs

Jan Kara — Fri, 09 May 2025 14:57:42 -0000

Sorry, that's "accept" not "access"

zfs

Anonymous — Fri, 09 May 2025 14:57:18 -0000

Would you access a patch to support ZFS? It would have to be like ZFS, a separate module to get the quota, since it doesn't support the same calls as ext4 or xfs.

#20 bcachefs support

Jan Kara — Fri, 25 Apr 2025 12:51:22 -0000

status: open --> closed
assigned_to: Jan Kara
Group: -->