Description of problem: Could not mount many active file systems at the same time, the error output is "can't read superblock". Version-Release number of selected component (if applicable): All stock FC4/FC5 kernel show the same problem. How reproducible: Every time. Steps to Reproduce: 1. Install a FC4 or FC5 system ( my output is based on FC4 system) 2. have other bunches of systems with NFS shares ready. 3. try to run a loop to mount NFS file systems on the newly installed FC4 system. Actual results: [root@testMaster ~]# for i in `/example/bin/lsng testnode-hosts`; do echo ${i}; mount ${i}:/0 /0/ttt/${i}/0; mount ${i}:/1 /0/ttt/${i}/1; mount ${i}:/2 /0/ttt/${i}/2; mount ${i}:/3 /0/ttt/${i}/3; done ... testnode540 testnode541 testnode542 testnode543 mount: testnode543:/1: can't read superblock mount: testnode543:/2: can't read superblock mount: testnode543:/3: can't read superblock testnode544 mount: testnode544:/0: can't read superblock mount: testnode544:/1: can't read superblock mount: testnode544:/2: can't read superblock mount: testnode544:/3: can't read superblock testnode545 mount: testnode545:/0: can't read superblock mount: testnode545:/1: can't read superblock mount: testnode545:/2: can't read superblock mount: testnode545:/3: can't read superblock testnode546 mount: testnode546:/0: can't read superblock mount: testnode546:/1: can't read superblock mount: testnode546:/2: can't read superblock mount: testnode546:/3: can't read superblock testnode547 mount: testnode547:/0: can't read superblock mount: testnode547:/1: can't read superblock mount: testnode547:/2: can't read superblock mount: testnode547:/3: can't read superblock testnode548 mount: testnode548:/0: can't read superblock mount: testnode548:/1: can't read superblock mount: testnode548:/2: can't read superblock mount: testnode548:/3: can't read superblock testnode549 ... [root@testMaster ~]# df -k | wc -l 254 [root@testMaster ~]# [root@testMaster ~]# uname -a Linux testMaster.example.com 2.6.15-1.1831_FC4smp #1 SMP Tue Feb 7 13:51:52 EST 2006 x86_64 x86_64 x86_64 GNU/Linux [root@testMaster ~]# Expected results: It should mount all 1000 NFS file systems without problems. Additional info:
*** Bug 189285 has been marked as a duplicate of this bug. ***
*** Bug 189286 has been marked as a duplicate of this bug. ***
[This comment added as part of a mass-update to all open FC4 kernel bugs] FC4 has now transitioned to the Fedora legacy project, which will continue to release security related updates for the kernel. As this bug is not security related, it is unlikely to be fixed in an update for FC4, and has been migrated to FC5. Please retest with Fedora Core 5. Thank you.
A new kernel update has been released (Version: 2.6.18-1.2200.fc5) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. In the last few updates, some users upgrading from FC4->FC5 have reported that installing a kernel update has left their systems unbootable. If you have been affected by this problem please check you only have one version of device-mapper & lvm2 installed. See bug 207474 for further details. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. If this bug has been fixed, but you are now experiencing a different problem, please file a separate bug for the new problem. Thank you.
(this is a mass-close to kernel bugs in NEEDINFO state) As indicated previously there has been no update on the progress of this bug therefore I am closing it as INSUFFICIENT_DATA. Please re-open if the issue still occurs for you and I will try to assist in its resolution. Thank you for taking the time to report the initial bug. If you believe that this bug was closed in error, please feel free to reopen this bug.