After power loss: HDD performance VERY bad (all operations, even deleting files)

[tetris]

Greetings,


There was a power loss while I was @work, when I got home I had to realize that after the box came back all hdd operation speeds went from hero to zero...
Deleting 50 files takes ages, even navigating in directories...
Anyone has any idea what might have gone wrong?
The server is a HP N40L with 4gigs of RAM, gigabit seems to be working perfectly.
I am using ZFS volumes.
Data transfer rate is between 200kb/s - 3mb/s atm...


Thanks for any help.

 

[Stephens]

Did the FreeNAS orderly shutdown when switching to UPS power not work correctly?
Which version of FreeNAS are you using?
What does "zpool status" show from the console? Have you done a scrub?

 

[tetris]

There was no UPS installed (now there is), so it did not shutdown, just powered off...

FreeBSD 8.3-RELEASE-p6 .

Zpool status says "ONLINE" and "errors: No known data errors".

I seemed to have a scrub started on one of the disks, that caused the 300kb/s transfer rate, I stopped it and now I can transfer with 8mb/s - 14mb/s, which
still is much lower than it used to be (30mb/s+).

 

[joeschmuck]

Re-initiate the scrub, you need to complete it to ensure your data integrity and if there is any issues, they will show up.

And how full is your pool? 90% full automatically triggers slowness. I don't have the technical reason handy but there is a difference on how data is recorded and that causes a huge slowdown.

EDIT: Also post some details about your system as it will help us help you out, including how things use to run.

 

[tetris]

Scrub is done now, the hdd is ~50% full, current transfer is 8mb/s - 9mb/s .
This is the server: http://h10010.www1.hp.com/wwpc/me/en/sm/WF06b/15351-15351-4237916-4237917-4237917-4248009-5163346.html?dnr=1
Upgraded to 4Gb RAM and additional HDD installed.

 

[joeschmuck]

Are you quoting 8 to 9 megabits (mb) or megabytes (MB)? Either way that is slow.

Now that the scrub has completed, does it show any errors? If so then cleanup those errors.
Second, I highly recommend you get a different flash drive and reload FreeNAS 8.3 on it, just assume you have a corrupt flash drive. Do not reload the configuration file. Then do an Automount of your pool, setup your shares and see what the transfer speed is.