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All processes go tstile
Hello
Another dump/snapshot problem that seems to have surfaced with
NetBSD 8.0: I run a dump with snapshot, and after a while,
all processes get stuck in tstile.
This happens with GENERIC kernel, though I added LOCKDEBUG to
investigate.
Processes backtrace show namei/VOP_LOCK/rw_enter and following
the locks owner, it seems everyone is ultimately waiting for ioflush, i
which itself is stuck with this backtrace:
sleepq_block
cv_wait
fstrans_start
VOP_BWRITE
getnewbuf
getblk
bio_doread
bread
ffs_update.part.3
ffs_sync
VFS_SYNC
sched_sync
If I understand correctly, that means a n I/O that never completed, right?
Anyone has something to test here before I downgrade this machine to 7.1.2?
--
Emmanuel Dreyfus
manu%netbsd.org@localhost
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