Can LVM block I/O and hang a system?
A message that is not in the archive (sent off-list or not yet received): [email protected]
Oh, this is good to know, but the peer was unattached during the initial hanging and when I fscked.
Quoted 6 lines · At 4:04 PM -0400 9/12/07, [email protected] wrote:
please use drbd 8.0.6 with kernels that do not allow recursion in
generic_make_request, otherwise any lock is likely to be caused by this.then, if there are still lockups, these may be caused by lvm, and may be due to some similar problem, namely doing synchronous (housekeeping) io from within the
generic_make_requestpath within the same "thread".
For drbd mailing list readers, who didn't see the original message, the kernel version I am using is Gentoo 2.6.22-r3. (I don't know whether this will still be true of kernels after 22-r3.)
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Maurice Volaski, [email protected] Computing Support, Rose F. Kennedy Center Albert Einstein College of Medicine of Yeshiva University