Centos 7 + 0.6.3 does not automatically import zpools

[rhagu]

Hi,
I exported a zpool on ubuntu 12.04 (0.6.2) and imported it on Centos 7 (0.6.3). After a reboot the pool is not automatically imported. The import needs to be done manually with import -f zpoolname and works without a problem.

[root@localhost]# systemctl | grep -i zfs
zed.service                                                                                                                    loaded active running   ZFS Event Daemon (zed)
zfs-import-cache.service                                                                                                       loaded failed failed    Import ZFS pools by cache file
zfs-mount.service                                                                                                              loaded active exited    Mount ZFS filesystems
zfs-share.service                                                                                                              loaded active exited    ZFS file system shares
zfs.target                                                                                                                     loaded active active    ZFS startup target






[root@localhost zfs]# systemctl status zfs-import-cache.service
zfs-import-cache.service - Import ZFS pools by cache file
   Loaded: loaded (/usr/lib/systemd/system/zfs-import-cache.service; static)
   Active: failed (Result: exit-code) since Do 2014-10-02 16:43:30 CEST; 13min ago
  Process: 579 ExecStart=/sbin/zpool import -c /etc/zfs/zpool.cache -aN (code=exited, status=1/FAILURE)
 Main PID: 579 (code=exited, status=1/FAILURE)

Okt 02 16:43:30 localhost.localdomain zpool[579]: cannot import 'bigraid': pool may be in use from other system
Okt 02 16:43:30 localhost.localdomain zpool[579]: use '-f' to import anyway
Okt 02 16:43:30 localhost.localdomain zpool[579]: cannot import 'littleraid': pool may be in use from other system
Okt 02 16:43:30 localhost.localdomain zpool[579]: use '-f' to import anyway
Okt 02 16:43:30 localhost.localdomain systemd[1]: zfs-import-cache.service: main process exited, code=exited...LURE
Okt 02 16:43:30 localhost.localdomain systemd[1]: Failed to start Import ZFS pools by cache file.
Okt 02 16:43:30 localhost.localdomain systemd[1]: Unit zfs-import-cache.service entered failed state.
Hint: Some lines were ellipsized, use -l to show in full.

[x09]

#2575

[l1k]

Likely fixed by #2766 if Dracut is used.

[maci0]

I often have problems with a missing /etc/hostid file either on the system or in the initrd or even both.
I think in the future we need to address this issue.

[behlendorf]

@maci0 As of 0.6.3 a /etc/hostid file isn't needed unless your using a failover style configuration.

[dswartz]

@maci0 As of 0.6.3 a /etc/hostid file isn't needed unless your using a
failover style configuration.

Except if the spl_hostid kernel module parameter isn't working (as I've
mentioned in the other thread...)

[maci0]

@behlendorf I remember not having an /etc/hostid and also no spl_hostid kernel parameter set.
I had problems that the system would not automatically mount the zfs filesystems. zpool import worked fine.
But after creating /etc/hostid it always worked automatically. rootfs is not zfs here. that was a RHEL7 system with ZoL 0.6.3

@behlendorf is it hostid for legacy reasons ? on most modern linux systems there is /etc/machine-id

[rhagu]

so, does this mean I should wait until 0.6.4 is released?

[maci0]

@rhagu do you have /etc/hostid on your system ?
do you have it in your initramd?
are they the same?

im running RHEL7 fine now with 0.6.3 after making sure these files exist and are identical
btw there is lsinitrd on RHEL/Fedora to check the contents of an initrd

[rhagu]

@maci0
ls /etc shows no /etc/hostid .
I dont know how to check, if there is one in initramd.

[l1k]

@rhagu: zcat < /initrd.img | cpio -tv | grep hostid

[rhagu]

@l1k

[root@localhost ~]# zcat < /initrd.img | cpio -tv | grep hostid
-bash: /initrd.img: Datei oder Verzeichnis nicht gefunden
cpio: verfrühtes Ende des Archivs

[maci0]

As I said earlier there is lsinitrd which shows you the content of your initial ramdisk images.

[rhagu]

ah, ok, it shows no entry:

[root@localhost ~]# lsinitrd | grep hostid
[root@localhost ~]#

[FransUrbo]

[root@localhost ~]# lsinitrd | grep hostid

You have to give it a initrd file to list to...

[rhagu]

@FransUrbo it does actually seem to find one, it just cant grep anything with the string hostid

http://pastebin.com/WBvTRCuz

[dswartz]

[root@localhost ~]# lsinitrd | grep hostid

You have to give it a initrd file to list to...

This is certainly not true for CentOS 7.

[gmelikov]

Closing as stale.