On 01/18/11 05:22 PM, Repetski, Stephen wrote:
On Mon, Jan 17, 2011 at 22:08, Ian Collins <i...@ianshome.com
<mailto:i...@ianshome.com>> wrote:
On 01/18/11 04:00 PM, Repetski, Stephen wrote:
Hi All,
I believe this has been asked before, but I wasn’t able to
find too much information about the subject. Long story short,
I was moving data around on a storage zpool of mine and a zfs
destroy <filesystem> hung (or so I thought). This pool had
dedup turned on at times while imported as well; it’s running
on a Nexenta Core 3.0.1 box (snv_134f).
The first time the machine was rebooted, it hung at the
“Loading ZFS filesystems” line after loading the kernel; I
booted the box with all drives unplugged and exported the
pool. The machine was rebooted, and now the pool is hanging on
import (zpool import –Fn Nalgene). I’m using
“0t2761::pid2proc|::walk thread|::findstack" | mdb –k” to try
and view what the import processes is doing, but I’m not a
hard-core ZFS/Solaris dev so I don’t know if I’m reading the
output correctly, but it appears that ZFS is continuing to
delete a snapshot/FS from before (reading from the top down):
What does "zpool iostat <pool> 10" show?
If you have a lot a deduped data and not a lot of RAM (or a cache
device), it can take a very long time to destroy a filesystem.
You will see lot of reads and not many writes if this is happening.
--
Ian.
Zpool iostat itself hangs,
If you are running it as root, try another user. I don't know about
recent builds, but zpool commands are way slower as root on Solaris 10.
--
Ian.
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