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On Wednesday, 4 March 2020 09:24:31 GMT n952162 wrote: |
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> On 2020-03-04 10:10, Michael wrote: |
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> > On Wednesday, 4 March 2020 08:09:45 GMT n952162 wrote: |
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> >> Hi, |
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> >> |
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> >> I have 3 swap devices and files. At boot, it seems indeterminate which |
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> >> ones get "mounted" (as swap areas). |
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> >> |
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> >> Does anyone have an idea why they're not all mounted? |
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> >> |
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> >> Here are the swap lines from my fstab: |
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> >> |
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> >> #LABEL=swap none swap sw 0 0 |
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> >> |
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> >> /dev/disk/by-id/ata-TOSHIBA_DT01ACA300_xxxxxxxx-part1 none swap |
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> >> |
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> >> sw,pri=10 0 0 |
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> >> |
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> >> /swap none swap sw,pri=5 0 0 |
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> >> |
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> >> /lcl/WDC_WD20EFRX-68EUZN0_WD-yyyyyyyyyy/1/swap none swap |
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> >> sw,pri=1 0 0 |
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> > |
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> > The second entry is missing the device you intend to mount. |
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> > |
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> > When you list the first and third devices do you see anything wrong with |
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> > them? |
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> > |
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> > When you try to enable them manually with 'swapon -v' what do you get? |
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> > |
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> > PS. If any of these swap block devices are actually files within a fs make |
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> > sure you first fill them up with dd, because files with holes in them |
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> > could |
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> > fail to be enabled. Also some fs (btrfs?) are not good candidates for |
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> > having swap files on them, if they move data around with cow. |
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> |
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> The second and third entries are files, created with dd(1), from |
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> /dev/zeros, as shown on the mkswap(8) man page. No word in |
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> /var/log/messages for non-mounted swaps. |
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|
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I assume you have run something like this: |
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|
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dd if=/dev/zero of=/swap bs=4096 count=xxxxxxxx |
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mkswap -c -f -L moreswap /swap |
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swapon -v -o pri=5 /swap |
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|
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When you run 'swapon -v /swap' does it enable it? Is dmesg happy? |
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