cephfs: do not run modprobe if support is compiled into the kernel
#4378
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nixpanic
added
bug
| if err := execCommandErr(ctx, "modprobe", kernelModule); err != nil { | ||
| return err | ||
| } |
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i think we can optimize it by moving this modeprobe to NewKernelMounter so that we run it only once when driver starts not always WDYT?
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There is a check to see if the driver is loaded when NewKernelMounter() is called. That sets m.needsModprobe. It is done so that NewKernelMounter() does not need to return an error, keeping other changes minimal.
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yeah i agree but this works byt when where a mountKernel is called and if needsModprobe not set we keep on running modeprobe, but running that can be avoided if we set needsModprobe to true on successful run of modprobe,
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we can take it as an enhancement as well.
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Ah, yes, if modprobe succeeded, it should be set to true
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this is done now, please review again.
| if err := execCommandErr(ctx, "modprobe", kernelModule); err != nil { | ||
| return err | ||
| } |
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yeah i agree but this works byt when where a mountKernel is called and if needsModprobe not set we keep on running modeprobe, but running that can be avoided if we set needsModprobe to true on successful run of modprobe,
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| type KernelMounter struct{} | ||
| // testErrorf can be set by unit test for enhanced error reporting. | ||
| var testErrorf = func(fmt string, args ...any) { /* do nothing */ } |
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testErrorf might not be the right name for non-test file and also fmt can be replaced to something else as its a core package name.
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not sure I understand, fmt is just a string?
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what i mean is that fmt is also a package name, we might get into a static check problem if we use the same name for some variable name as well.
| if err := execCommandErr(ctx, "modprobe", kernelModule); err != nil { | ||
| return err | ||
| } |
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we can take it as an enhancement as well.
| return err | ||
| } | ||
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| m.needsModprobe = false |
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i think this needs to be set to true? also this is not of much use with the current code because mounter.New() is called for every NodeStage RPC call. we need to move this to Driver initialization time as it needs to run only one time.
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once the module is loaded, it will be listed in /proc/filesystems, so eventually modprobe is only run once
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@Mergifyio rebase |
By reading the contents of /proc/filesystems, and checking if "ceph" is included there, running "modprobe ceph" can be skipped. Fixes: ceph#4376 Signed-off-by: Niels de Vos <ndevos@ibm.com>
✅ Branch has been successfully rebased |
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@Mergifyio queue |
✅ The pull request has been merged automaticallyThe pull request has been merged automatically at ab87045 |
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/test ci/centos/k8s-e2e-external-storage/1.26 |
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/test ci/centos/mini-e2e-helm/k8s-1.26 |
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/test ci/centos/upgrade-tests-cephfs |
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/test ci/centos/mini-e2e/k8s-1.26 |
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/test ci/centos/k8s-e2e-external-storage/1.28 |
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/test ci/centos/upgrade-tests-rbd |
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/test ci/centos/mini-e2e-helm/k8s-1.28 |
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/test ci/centos/k8s-e2e-external-storage/1.27 |
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/test ci/centos/mini-e2e/k8s-1.28 |
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/test ci/centos/k8s-e2e-external-storage/1.29 |
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/test ci/centos/mini-e2e-helm/k8s-1.27 |
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/test ci/centos/mini-e2e-helm/k8s-1.29 |
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/test ci/centos/mini-e2e/k8s-1.27 |
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/test ci/centos/mini-e2e/k8s-1.29 |
By reading the contents of /proc/filesystems, and checking if "ceph" is
included there, running "modprobe ceph" can be skipped.
Fixes: #4376
Signed-off-by: Niels de Vos ndevos@ibm.com