6c72c894f7
* Initial code to implement multi-instance queue manager * alter default mqsc to prevent race between listeners on standby startup * Updates to multi-instance queue manager code * initial multi instance test * Multi-instance code improvements * Multi instance fixes and first test * configure queue manager * Add mirror log filtering for mult-instance QMs * Add log message for multi-instance enabled * Improvements to container runtime logging * refactor test * Test active standby switch * Improve createQueueManager function * Test multi instance race * wait * multi instance mount tests * skip race test * mount tests * no mount test * single instance split mount tests * readiness check * More updates for handling standby queue manager * Improve standby checks * Minor fixes to miqm * Fix logging of JSON errors * Update copyrights * Fix log includes
135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
// +build linux
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/*
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© Copyright IBM Corporation 2017, 2019
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package runtime
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import (
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"golang.org/x/sys/unix"
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)
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// fsTypes contains file system identifier codes.
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// This code will not compile on some operating systems - Linux only.
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var fsTypes = map[int64]string{
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0x61756673: "aufs",
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0xef53: "ext",
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0x6969: "nfs",
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0x65735546: "fuse",
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0x9123683e: "btrfs",
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0x01021994: "tmpfs",
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0x794c7630: "overlayfs",
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0x58465342: "xfs",
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// less popular codes
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0xadf5: "adfs",
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0xadff: "affs",
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0x5346414F: "afs",
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0x0187: "autofs",
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0x73757245: "coda",
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0x28cd3d45: "cramfs",
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0x453dcd28: "cramfs",
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0x64626720: "debugfs",
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0x73636673: "securityfs",
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0xf97cff8c: "selinux",
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0x43415d53: "smack",
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0x858458f6: "ramfs",
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0x958458f6: "hugetlbfs",
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0x73717368: "squashfs",
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0xf15f: "ecryptfs",
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0x414A53: "efs",
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0xabba1974: "xenfs",
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0x3434: "nilfs",
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0xF2F52010: "f2fs",
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0xf995e849: "hpfs",
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0x9660: "isofs",
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0x72b6: "jffs2",
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0x6165676C: "pstorefs",
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0xde5e81e4: "efivarfs",
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0x00c0ffee: "hostfs",
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0x137F: "minix_14", // minix v1 fs, 14 char names
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0x138F: "minix_30", // minix v1 fs, 30 char names
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0x2468: "minix2_14", // minix v2 fs, 14 char names
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0x2478: "minix2_30", // minix v2 fs, 30 char names
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0x4d5a: "minix3_60", // minix v3 fs, 60 char names
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0x4d44: "msdos",
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0x564c: "ncp",
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0x7461636f: "ocfs2",
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0x9fa1: "openprom",
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0x002f: "qnx4",
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0x68191122: "qnx6",
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0x6B414653: "afs_fs",
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0x52654973: "reiserfs",
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0x517B: "smb",
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0x27e0eb: "cgroup",
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0x63677270: "cgroup2",
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0x7655821: "rdtgroup",
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0x57AC6E9D: "stack_end",
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0x74726163: "tracefs",
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0x01021997: "v9fs",
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0x62646576: "bdevfs",
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0x64646178: "daxfs",
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0x42494e4d: "binfmtfs",
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0x1cd1: "devpts",
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0xBAD1DEA: "futexfs",
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0x50495045: "pipefs",
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0x9fa0: "proc",
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0x534F434B: "sockfs",
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0x62656572: "sysfs",
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0x9fa2: "usbdevice",
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0x11307854: "mtd_inode",
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0x09041934: "anon_inode",
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0x73727279: "btrfs",
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0x6e736673: "nsfs",
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0xcafe4a11: "bpf",
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0x5a3c69f0: "aafs",
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0x15013346: "udf",
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0x13661366: "balloon_kvm",
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0x58295829: "zsmalloc",
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}
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// GetFilesystem returns the filesystem type for the specified path
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func GetFilesystem(path string) (string, error) {
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statfs := &unix.Statfs_t{}
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err := unix.Statfs(path, statfs)
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if err != nil {
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return "", err
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}
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// Use a type conversion to make type an int64. On s390x it's a uint32.
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t, ok := fsTypes[int64(statfs.Type)]
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if !ok {
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return "unknown", nil
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}
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return t, nil
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}
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// SupportedFilesystem returns true if the supplied filesystem type is supported for MQ data
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func SupportedFilesystem(fsType string) bool {
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switch fsType {
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case "aufs", "overlayfs", "tmpfs":
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return false
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default:
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return true
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}
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}
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// ValidMultiInstanceFilesystem returns true if the supplied filesystem type is valid for a multi-instance queue manager
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func ValidMultiInstanceFilesystem(fsType string) bool {
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if !SupportedFilesystem(fsType) {
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return false
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}
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// TODO : check for non-shared filesystems & shared filesystems which are known not to work
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return true
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}
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