Thanks Matt. I will keep an eye on the Redmine issue. Do you have any timeframe for the update so I know when to look back? In the mean time I will just make sure the tiering happens in the same process.
Chris -Chris On Mon, Nov 19, 2012 at 1:55 PM, Matthew Ahrens <[email protected]> wrote: > The issue is likely related to the bug you referenced, which I'm working > on a fix for. > > For future reference, a more complete thread listing can be obtained > with "::stacks -m zfs". > > --matt > > On Sun, Nov 18, 2012 at 1:55 PM, Chris Nagele <[email protected]> wrote: > >> I've been running into an issue with zfs file systems hanging/freezing >> during our backup processes. >> >> We currently perform backups to two servers, an onsite server and an >> offsite server. What we found is that when a single process is >> creating the snap, sending it and deleting an older snap it works >> fine. However, if we add the second process to do the same thing to >> the offsite server, we get a stuck process on the snapshot delete that >> cannot be killed. From what I can tell, the problem occurs when we >> attempt to delete any snapshot while a "zfs send" is in progress. >> >> Some things to note: >> >> * Only the volume with the stuck process freezes. Accessing files is >> fine, only ZFS commands are stuck. >> * We used different snapshot names, so the delete and send in both >> processes were not using the same snaps. >> * We also tried tiering where we would send snaps from the onsite >> backup server, but processes still froze. >> * We are using OmniOS. >> >> After some advising from Omni I used mdb to walk the threads. Here is >> the output: >> >> http://pastie.org/private/xism3bd6qixbfaugprqyqw >> >> They also mentioned it might be related to this bug: >> >> https://www.illumos.org/issues/2807 >> >> I attempted to do a crashdump, but after 30 minutes it was only 8% >> complete and we had to force the reboot. The box has 198GB of RAM, so >> I assume it was taking a while due to that. >> >> Does anyone know more about this issue? I am trying to figure out a >> way that I can run tiered backups to multiple locations without >> locking zfs. >> >> Thanks, >> Chris >> >> >> ------------------------------------------- >> illumos-discuss >> Archives: https://www.listbox.com/member/archive/182180/=now >> RSS Feed: >> https://www.listbox.com/member/archive/rss/182180/21175667-2019e749 >> Modify Your Subscription: https://www.listbox.com/member/?&; >> Powered by Listbox: http://www.listbox.com >> > > *illumos-discuss* | > Archives<https://www.listbox.com/member/archive/182180/=now> > <https://www.listbox.com/member/archive/rss/182180/23653482-a5a358b3> | > Modify<https://www.listbox.com/member/?&;>Your Subscription > <http://www.listbox.com> > ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
