Messages in this thread | | | Date | Sun, 14 Jun 2009 12:45:17 +0900 (JST) | Subject | Re: NILFS2 get stuck after bio_alloc() fail | From | Ryusuke Konishi <> |
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Hi, On Sat, 13 Jun 2009 22:32:11 -0300, Leandro Lucarella wrote: > Hi! > > While testing nilfs2 (using 2.6.30) doing some "cp"s and "rm"s, I noticed > sometimes they got stucked in D state, and the kernel had said the > following message: > > NILFS: IO error writing segment > > A friend gave me a hand and after adding some printk()s we found out that > the problem seems to occur when bio_alloc()s inside nilfs_alloc_seg_bio() > fail, making it return NULL; but we don't know how that causes the > processes to get stucked. > > PS: Please CC me. > -- > Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/
Thank you for reporting this issue.
Could you get stack dump of the stuck nilfs task? It is acquirable as follows if you enabled magic sysrq feature:
# echo t > /proc/sysrq-trigger
I will dig into the process how it got stuck.
P.S. nilfs.org and the nilfs mailing list is stopping due to planned power outage. They will be back on June 15 0:30 a.m.
A backup site except the list is available on http://nilfs.sourceforge.net/en/ during the period.
Regards, Ryusuke Konishi
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