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On Fri, May 22, 2009 at 16:15, Alan Jenkins <alan-jenkins@tuffmail.co.uk> wrote: > I've been looking at what is responsible for all the path lookup activity in > coldplug. On my debian stable system, it looks like every device gets its > parent looked up in sysfs. I think this is due to SUBSYSTEMS matches. > > I see the udev default rules are different, but it looks like they still > test for SUBSYSTEMS on every single device. Should we add SUBSYSTEM="scsi_generic" > to these three rules?
25 lines
1.4 KiB
Plaintext
25 lines
1.4 KiB
Plaintext
# do not edit this file, it will be overwritten on update
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# persistent storage links: /dev/tape/{by-id,by-path}
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ACTION!="add|change", GOTO="persistent_storage_tape_end"
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# type 8 devices are "Medium Changers"
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SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="8", IMPORT{program}="scsi_id --sg-version=3 --export --whitelisted -d $tempnode", SYMLINK+="tape/by-id/scsi-$env{ID_SERIAL}"
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SUBSYSTEM!="scsi_tape", GOTO="persistent_storage_tape_end"
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KERNEL=="st*[0-9]|nst*[0-9]", ATTRS{ieee1394_id}=="?*", ENV{ID_SERIAL}="$attr{ieee1394_id}", ENV{ID_BUS}="ieee1394"
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KERNEL=="st*[0-9]|nst*[0-9]", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="usb", IMPORT{program}="usb_id --export %p"
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KERNEL=="st*[0-9]|nst*[0-9]", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="scsi", KERNELS=="[0-9]*:*[0-9]", ENV{BSG_DEV}="$root/bsg/$id"
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KERNEL=="st*[0-9]|nst*[0-9]", ENV{ID_SERIAL}!="?*", WAIT_FOR="$env{BSG_DEV}", IMPORT="scsi_id --whitelisted --export --device=$env{BSG_DEV}", ENV{ID_BUS}="scsi"
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KERNEL=="st*[0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="tape/by-id/$env{ID_BUS}-$env{ID_SERIAL}"
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KERNEL=="nst*[0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="tape/by-id/$env{ID_BUS}-$env{ID_SERIAL}-nst"
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# by-path (parent device path)
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KERNEL=="st*[0-9]|nst*[0-9]", IMPORT{program}="path_id %p"
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KERNEL=="st*[0-9]", ENV{ID_PATH}=="?*", SYMLINK+="tape/by-path/$env{ID_PATH}"
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KERNEL=="nst*[0-9]", ENV{ID_PATH}=="?*", SYMLINK+="tape/by-path/$env{ID_PATH}"
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LABEL="persistent_storage_tape_end"
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