Date: Mon, 21 Apr 2003 20:45:15 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Lucky Green" <shamrock@cypherpunks.to> Cc: freebsd-current@freebsd.org Subject: Re: RE: Broken memory management on system with no swap Message-ID: <200304220345.h3M3jFBu099430@apollo.backplane.com> References: <007a01c3086b$c4a81ae0$6601a8c0@VAIO650>
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I can't help you with gbde. Looking at the mail archives it would
appear that Poul answered a question from someone else in regards to
these errors a little while back, which I have included below:
:>Also, when writing to the gbde encrypted filesystem I sporadically get
:>messages like:
:>
:>"ENOMEM 0xc26ced80 on 0xc2648b80(md1.bde)"
:
:This is when we cannot sleeplessly allocate memory in the I/O path.
:The request gets retried in that case.
:
:--
:Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
-Matt
:Matt,
:You patch, at least so far, appears to prevent processes from being
:killed due to lack of memory. Thanks! However, I am still seeing other
:memory-related error messages in the syslog:
:
:----------
:Apr 20 22:54:32 pakastelohi kernel: swap_pager_getswapspace: failed
:Apr 22 00:34:29 pakastelohi kernel: ENOMEM 0xc6bb8c00 on
:0xc6d91380(ad4s1.bde)
:Apr 22 00:34:34 pakastelohi kernel: ENOMEM 0xc6bc5300 on
:0xc6d91380(ad4s1.bde)
:Apr 22 00:48:49 pakastelohi kernel: ENOMEM 0xc65b8e00 on
:0xc6d91380(ad4s1.bde)
:Apr 22 00:52:51 pakastelohi kernel: ENOMEM 0xc6477000 on
:0xc6d91380(ad4s1.bde)
:Apr 22 00:52:51 pakastelohi kernel: ENOMEM 0xc860fc00 on
:0xc6d91380(ad4s1.bde)
:Apr 22 01:07:14 pakastelohi kernel: ENOMEM 0xc69b4900 on
:0xc6865880(ad6s1c.bde)
:Apr 22 01:07:14 pakastelohi kernel: ENOMEM 0xc85fee00 on
:0xc6865880(ad6s1c.bde)
:-----------
:
:I had reported the "swap_pager_getswapspace: failed" and GBDE "ENOMEM"
:errors in earlier, separate threads. The "swap_pager_getswapspace:
:failed" occurred most likely, though I am not positive, during the
:copying of a large file between two unencrypted partitions. The GBDE
:"ENOMEM" errors occurred while moving multiple GBs in directories
:containing files of various sizes, from a few MB to about 800MB, from
:one GBDE partition to another. (gbde.c,v 1.13)
:
:What I don't know is what the impact of these messages is: can they be
:safely ignored or are they indicative of processes failing to execute as
:requested and/or possible data corruption taking place?
:
:Thanks,
:--Lucky
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