znapzend
I'm doing some searching on this... Have you done a write up at all?
I see earlier you installed directly on OMV from CLI (RE: [HOWTO] Instal ZFS-Plugin & use ZFS on OMV)
Is that still your preferred setup or are you running from docker?
https://github.com/oetiker/zna…E.md#running-in-container
Thanks!
I am still on this quite old OMV 3 version. znapzend is running flawlessly.
Is that still your preferred setup or are you running from docker?
I have no experience with znapzend in a docker installation. In the post you have linked there is a another link where a precompiled znapzend package from Gregy can be downloaded. OMV 5 is based on Debian 10 and a znapzend package is also available for that.
Hi everyone,
tonight I recieved this notification:
ZitatAlles anzeigenZFS scrub_finish event for Data on Delibird on the Sun, 14 Jun 2020 07:34:55 +0200 (CEST)
ZFS has finished a scrub:
eid: 13
class: scrub_finish
host: Delibird
time: 2020-06-14 07:34:54+0200
pool: Data
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://zfsonlinux.org/msg/ZFS-8000-9P
scan: scrub repaired 256K in 0 days 07:10:53 with 0 errors on Sun Jun 14 07:34:54 2020
config:
NAME STATE READ WRITE CKSUM
Data ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
sde ONLINE 0 0 4
sdd ONLINE 0 0 0
sda ONLINE 0 0 0
errors: No known data errors
What doesit mean? Do I have to replace sde? How can I know which file is affected? By this error?
This is the reason why I like zdev's set up as mirrors. Errors are detected AND corrected.
SMART seems fine. I run a long test this morning to be sure.
Also I'll run a backup tomorrow just to be sure.
I've had scrubs where 256K was repaired, but with no errors, corrected or uncorrected, so far.
At the end of your log report, it states "no known data" errors. If SMART looks OK, I wouldn't worry but I would keep an eye on it.
I followed the link provided in your log out. http://zfsonlinux.org/msg/ZFS-8000-9P
The following, from the link above, seems applicable:
__________________________________________________________________________________________________
If these errors persist over a period of time, ZFS may determine the
device is faulty and mark it as such. However, these error counts may or may
not indicate that the device is unusable. It depends on how the errors were
caused, which the administrator can determine in advance of any ZFS diagnosis.
For example, the following cases will all produce errors that do not indicate
potential device failure:
__________________________________________________________________________________________________
Any of the above could have happened during the scrub. The latter admin accidentally "wrote over" might have been the result of something automated.
I am still on this quite old OMV 3 version. znapzend is running flawlessly.
I have no experience with znapzend in a docker installation. In the post you have linked there is a another link where a precompiled znapzend package from Gregy can be downloaded. OMV 5 is based on Debian 10 and a znapzend package is also available for that.
Thanks!
I had a drive drop out (listed as unavail). I remember seeing you or others post about using serial number id's and was reading more about setting up /etc/zfs/vdev_id.conf (also here) and was wondering if anyone with larger arrays has tried the by channel/slot method?
I would like to see disks in vdev as something like Ua0, Ub0 (upper jbod, channel 1, disc 0 and disk 1) Lc3, Ld3 (lower jbod, channel 4, disk 2 and disk 3)
I've been playing with it but I'm at a bit of a loss. I think the slot mapping is required because not specifying/using the defaults I'm getting duplicate Ids/phys...
(note, all outputs shortened to avoid 10k char msg len restriction)
# ls /dev/disk/by-id/
ata-SAMSUNG_HD103SJ_S246J9GB102368 ata-ST3750640NS_5QD4EAYM
ata-SAMSUNG_HD103SJ_S246J9GB102368-part1 ata-ST3750640NS_5QD4EAYM-part1
ata-SAMSUNG_HD103SJ_S246J9GB102368-part2 ata-ST3750640NS_5QD4EAYM-part2
...My topology: 2x M1015/ LSi 9220-8i both ports on each M1015 are connected to an IBM 46M0997 expander.. Each expander connects a 16 slot backplane
so PCI slot
0a:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)
0c:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 02)and end devices
# ls -l /sys/class/sas_end_device
total 0
lrwxrwxrwx 1 root root 0 Jun 11 15:38 end_device-2:0:0 -> ../../devices/pci0000:00/0000:00:04.0/0000:0a:00.0/host2/port-2:0/expander-2:0/port-2:0:0/end_device-2:0:0/sas_end_device/end_device-2:0:0
lrwxrwxrwx 1 root root 0 Jun 11 15:38 end_device-2:0:1 -> ../../devices/pci0000:00/0000:00:04.0/0000:0a:00.0/host2/port-2:0/expander-2:0/port-2:0:1/end_device-2:0:1/sas_end_device/end_device-2:0:1
lrwxrwxrwx 1 root root 0 Jun 11 15:38 end_device-3:0:0 -> ../../devices/pci0000:00/0000:00:06.0/0000:0c:00.0/host3/port-3:0/expander-3:0/port-3:0:0/end_device-3:0:0/sas_end_device/end_device-3:0:0
lrwxrwxrwx 1 root root 0 Jun 11 15:38 end_device-3:0:1 -> ../../devices/pci0000:00/0000:00:06.0/0000:0c:00.0/host3/port-3:0/expander-3:0/port-3:0:1/end_device-3:0:1/sas_end_device/end_device-3:0:1
..Thanks!
Did you have created a pool already? What is the output of zpool status?
I have created my pool with the /dev/disk/by-id/ method, so that the drives can be identified by their serial numbers.
Yes pool is created.
With 32 slots I'd rather use slot targets...
With 32 slots I'd rather use slot targets...
Never tried this.
Hi everyone,
because of some blackout I had in the last few days I now have some checksum errors on my ZFS raidz1 .
ZitatAlles anzeigenZFS scrub_finish event for Data on Delibird on the Sun, 9 Aug 2020 07:41:48 +0200 (CEST)
ZFS has finished a scrub:
eid: 884
class: scrub_finish
host: Delibird
time: 2020-08-09 07:41:48+0200
pool: Data
state: DEGRADED
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: http://zfsonlinux.org/msg/ZFS-8000-8A
scan: scrub repaired 53.8M in 0 days 07:17:47 with 1 errors on Sun Aug 9 07:41:48 2020
config:
NAME STATE READ WRITE CKSUM
Data DEGRADED 0 0 0
raidz1-0 DEGRADED 0 0 0
sde DEGRADED 0 0 428 too many errors
sdd DEGRADED 0 0 206 too many errors
sda DEGRADED 0 0 234 too many errors
errors: 1 data errors
This is the message that I got tonight.
What should I do now? Do I need to backup everything and recreate the pool?
Hi everyone,
because of some blackout I had in the last few days I now have some checksum errors on my ZFS raidz1 .
This is the message that I got tonight.
What should I do now? Do I need to backup everything and recreate the pool?
yes, probably.
try first to unplug & replug the disk, and re run a scrub, perhaps some data can be safe, but the message is clear.
try to Zpool status -v to see more info: https://docs.oracle.com/cd/E19…820-2314/gbcve/index.html
more interesting links.
https://docs.oracle.com/cd/E19…819-5461/gbctx/index.html
https://docs.oracle.com/cd/E19…819-5461/gbcuz/index.html
I cleared the errors and launched a new scrub. I don't get why the file is indicated as corrputed. I opened it and it worked.
ZFS ... took 3-4 GB of RAM always and 5-6 during some operations,
Yes this is true. ZFS uses per default half of the RAM for file caching. But this is no drawback in your case. Because this RAM is physically available in your system, then it is used for ZFS. Why shouldn´t it be used, if it is there?
with EXT4 and XFS I have always used 1-2GB of RAM and much less electricity consumption.
This is new for me that there is a direct correlation between the used file system and the power consumption. The only reason I can imagine is the regular ZFS scrub with heavy disk activity which is performed every 2 weeks automatically. Depending on the amount of data it takes several hours to complete.
This is the price for data consistency you may will to pay.
If ram is available and unused, ZFS uses it. That's not to say ZFS "demands" ram from the system. If needed, for other purposes, ZFS will give RAM back to the system. It's better to utilize unused ram for file caching, which is exactly what ZFS does, rather than letting it sit idle and unused.
I have have an Intel Atom box with 4GB ram, that runs a 4TB ZFS mirror just fine.
Guys, from your responses I can see that ZFS is very raw, because on my system it was as I mentioned before and also in Glances I could see many errors regarding CPU and memory which I don`t see now when I have XFS and EXT4 drives.
It`s good that you can use it without any issues, but in my cases EXT4 is better, moreover I noticed that with EXT4 my drive responses faster then on ZFS.
Found this...might help with ZFS and docker
it seems docker is trying to start before any of the ZFS stuff is mounted and complete
I had the hardest time getting mine to start with ZFS and docker...I think that might have been the issue all along
Hi Guys,
I am moving from TrueNAS to OpenMediaVault.
Installed the latest version on Debian.
Have everything configured and running.
I managed to install zfs and import the pools with the command "zpool import -f PoolName" since import from the GUI was giving errors.
I am just having issues accessing the Data already on the disks.
If i create a shared folder it gets created and i am able to write data on the folder. But i am not able to browse the data already on the pool.
What am i missing. What do i need to do to be able to access the data already stored on the pools.
Best regards,
Adeel Akram
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