On Mon, Apr 21, 2008 at 12:40 PM, Jeff Blaine <[EMAIL PROTECTED]> wrote: > Derrick et al, > > ~:maverick> uname -a > Linux maverick 2.4.21-53.ELsmp #1 SMP Wed Nov 14 03:46:35 EST 2007 x86_64 > x86_64 x86_64 GNU/Linux > ~:maverick> strings /usr/vice/etc/afsd | grep OpenAFS > @(#) OpenAFS 1.4.6 built 2008-03-04 > ~:maverick> pwd > /afs/rcf/user/jblaine > ~:maverick> tar xf /mtc/raid8/ictools/xilinx/download/10.1i/ise_SFD.tar > tar: ise/ise/idata/drop0369_iSE_K31wIP_4.zip.xz: Wrote only 4608 of 10240 > bytes > tar: ise/ise/idata/drop0378_iSE_K31wIP_4.zip.xz: Cannot write: No space > left on device
The detail on this was that Kris Van Hees was looking into it, and he said: In essence, it seems to be possible that as AFS is flushing data to the server, and deletes the content of cache blocks, it tries to write new data immediately after deleting old data, and that the delete has not yet been committed to disk. In that case, the data blocks taken up by the deleted data are not released for reallocation yet, and thus while AFS thinks there is enough room left in the cache, there actually isn't. Note that if e.g. jbd-debug is enabled (in my case, at a level of 2 or more), enough extra work is being done by the kernel that the kjournald processing actually manages to do the commits before AFS demands the space, and thus it won't trigger the ENOSPC condition. How is that for a nice issue :) [...] Good news on that one is that Chas believes that just setting S_SYNC on the inode before truncation is probably a good thing on *any* filesystem on Linux, not just ext3, making the patch trivial. Testing scheduled for that (and potential impact, if any) later today. " Which was February 2005 timeframe. The change we made at the time instead was: (in osi_file.c on Linux) + filp->f_mode = FMODE_READ|FMODE_WRITE; Obviously we need to revisit this. For the record I have never produced it on my own test hardware. _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
