Date: Sun, 2 Jan 2011 08:41:04 +0000 From: miyamoto moesasji <miyamoto.31b@gmail.com> To: freebsd-stable@freebsd.org Subject: Re: tmpfs runs out of space on 8.2pre-release, zfs related? Message-ID: <AANLkTikeN1BqoYwtvSzUaXek5F8VMU9X=BssOLkFFMkx@mail.gmail.com>
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miyamoto moesasji <miyamoto.31b <at> gmail.com> writes: > > In setting up tmpfs (so not tmpmfs) on a machine that is using > zfs(v15, zfs v4) on 8.2prerelease I run out of space on the tmpfs when > copying a file of ~4.6 GB file from the zfs-filesystem to the memory > disk. This machine has 8GB of memory backed by swap on the harddisk, > so I expected the file to copy to memory without problems. > ....this is in fact worse than I first thought. After leaving the machine running overnight the tmpfs is reduced to a size of 4K, which shows that tmpfs is in fact completely unusable for me. See the output of df: --- hge@PulsarX4:~/ > df -hi /tmp Filesystem Size Used Avail Capacity iused ifree %iused Mounted on tmpfs 4.0K 4.0K 0B 100% 18 0 100% /tmp --- Relevant zfs-stats info: --- System Memory Statistics: Physical Memory: 8161.74M Kernel Memory: 4117.40M DATA: 99.29% 4088.07M TEXT: 0.71% 29.33M ARC Size: Current Size (arcsize): 63.58% 4370.60M Target Size (Adaptive, c): 100.00% 6874.44M Min Size (Hard Limit, c_min): 12.50% 859.31M Max Size (High Water, c_max): ~8:1 6874.44M --- I'm not sure what triggered this further reduction in size; but the above 4K size is probably important to show how dramatic this goes wrong.
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