I am using a centos 5 (2.6.18-194.el5). I need to be able to list files very quickly, in order for my rsync backup to be efficient. I don’t really need to cache file contents, because file access response time isn’t that important. I’ve got hundred million files and they keep being added and removed, and … Read more
I would like to create a Samba share that filters the contents of a directory based on a series of regular expression matches against file names. For example, I would like the share to allow access to only files with an .xml extension, effectively ignoring any filenames that don’t match the regex. Are there any … Read more
I get a kernel panic stating that root cannot be mounted if I boot my Direct Disk installation of Ubuntu 18.04.1 in paravirtualization mode, as seen in this screenshot from the Glish terminal: Any idea why I can’t boot? Kernel module? GRUB settings? Answer After a recent update, I am now back on paravirtual mode, … Read more
I am trying to cache a small amount(Max 5mb) of the start of all the files that is available on gdrive(gsuite) for quicker indexing. I am experimenting with rclone now, but it seems like it only handles cache for the whole mount, and not individual files. If i set it to cache max 10G, it … Read more
Recently I’ve faced situation, when “standard” disk space monitoring failed – Zabbix uses vfs.fs.size item for checking disk usage, which is documented and preconfigured in bundled templates. The Problem: When files are deleted, but file descriptor/handle is still open – disk might be filled, but Zabbix will report no usage in this case. How can … Read more
I know /proc is a VFS and cannot be updated by user from shell prompt. this is my understanding from the beginning. Now , I am writing one code and where I am taking care of corrupted /proc/partitions file. I have my code ready and need to corrupt the file to test my code. I … Read more
I have a Filer Server running Debian Jessie 8.7 on my network, with Samba 4.2.14. Until now, I just have one shared folder configured for the entire network and I would like to watch if there are open files on this share. When running smbstatus -L, it doesn’t point any information about any open files … Read more
I am looking to implement NILFS at my SME but I need a bit of help. I must backup the current system and all snapshots/checkpoints in a different continent to keep auditors happy. I’m currently using a home brewed system (Subversion based) and I can simply rsync that to another computer on another continent. However … Read more
Background: The Linux VFS cache will cache every file that is read from the disk in memory. This keeps going until RAM is full, at which point the oldest files get kicked from the cache. I am running XenServer with network attached storage. My servers have their root filesystem on the network attached storage. I … Read more
For some applications I have sequenced, App-V seems to do just what is needed to make the application work correctly. In other cases, however, I have found that a few files that ought to reside on the local filesystem are virtualized. This is a problem because those files don’t survive a “repair” of the virtualized … Read more
